[Pkg-javascript-commits] [node-engine.io-client] 01/02: Imported Upstream version 1.5.1
Sebastiaan Couwenberg
sebastic at moszumanska.debian.org
Fri Apr 3 20:02:59 UTC 2015
This is an automated email from the git hooks/post-receive script.
sebastic pushed a commit to branch master
in repository node-engine.io-client.
commit d4bcdbece92bceab6e86d00d4fe14869169c2bed
Author: Bas Couwenberg <sebastic at xs4all.nl>
Date: Fri Apr 3 17:44:41 2015 +0200
Imported Upstream version 1.5.1
---
.gitignore | 6 +
.npmignore | 2 +
.travis.yml | 41 +
.zuul.yml | 20 +
History.md | 468 +++++
Makefile | 37 +
README.md | 265 +++
engine.io.js | 4040 +++++++++++++++++++++++++++++++++++++++
index.js | 2 +
lib/index.js | 10 +
lib/socket.js | 705 +++++++
lib/transport.js | 159 ++
lib/transports/index.js | 53 +
lib/transports/polling-jsonp.js | 233 +++
lib/transports/polling-xhr.js | 384 ++++
lib/transports/polling.js | 245 +++
lib/transports/websocket.js | 238 +++
lib/xmlhttprequest.js | 36 +
package.json | 59 +
support/browserify.js | 50 +
support/browserify.sh | 6 +
test/arraybuffer/index.js | 10 +
test/arraybuffer/polling.js | 72 +
test/arraybuffer/ws.js | 79 +
test/binary-fallback.js | 26 +
test/blob/index.js | 10 +
test/blob/polling.js | 53 +
test/blob/ws.js | 72 +
test/connection.js | 160 ++
test/engine.io-client.js | 47 +
test/index.js | 31 +
test/socket.js | 16 +
test/support/env.js | 5 +
test/support/public/worker.js | 8 +
test/support/server.js | 40 +
test/transport.js | 183 ++
test/transports/index.js | 1 +
test/transports/polling-xhr.js | 59 +
test/xmlhttprequest.js | 84 +
39 files changed, 8015 insertions(+)
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..47d6198
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+node_modules
+.DS_Store
+build
+components
+/coverage
+npm-debug.log
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..3957910
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,2 @@
+support/
+test
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..120ee7d
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,41 @@
+language: node_js
+node_js:
+ - "0.10"
+notifications:
+ irc: "irc.freenode.org#socket.io"
+matrix:
+ include:
+ - node_js: '0.10'
+ env: BROWSER_NAME=chrome BROWSER_VERSION=latest
+ - node_js: '0.10'
+ env: BROWSER_NAME=safari BROWSER_VERSION=latest
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=6
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=7
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=8
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=9
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=10 BROWSER_PLATFORM="Windows 2012"
+ - node_js: '0.10'
+ env: BROWSER_NAME=ie BROWSER_VERSION=latest BROWSER_PLATFORM="Windows 2012"
+ - node_js: '0.10'
+ env: BROWSER_NAME=iphone BROWSER_VERSION=4.3
+ - node_js: '0.10'
+ env: BROWSER_NAME=iphone BROWSER_VERSION=5.1
+ - node_js: '0.10'
+ env: BROWSER_NAME=iphone BROWSER_VERSION=6.1
+ - node_js: '0.10'
+ env: BROWSER_NAME=iphone BROWSER_VERSION=7.1
+ - node_js: '0.10'
+ env: BROWSER_NAME=android BROWSER_VERSION=4.0
+ - node_js: '0.10'
+ env: BROWSER_NAME=android BROWSER_VERSION=4.1
+ - node_js: '0.10'
+ env: BROWSER_NAME=android BROWSER_VERSION=4.2
+ - node_js: '0.10'
+ env: BROWSER_NAME=android BROWSER_VERSION=4.3
+ - node_js: '0.10'
+ env: BROWSER_NAME=android BROWSER_VERSION=4.4
diff --git a/.zuul.yml b/.zuul.yml
new file mode 100644
index 0000000..5337ec7
--- /dev/null
+++ b/.zuul.yml
@@ -0,0 +1,20 @@
+ui: mocha-bdd
+server: ./test/support/server.js
+browsers:
+ - name: chrome
+ version: 29..latest
+# Firefox disabled for now because it can cause infinite wait loops when
+# running any tests
+# - name: firefox
+# version: latest
+ - name: safari
+ version: latest
+ - name: ie
+ version: 10
+ platform: Windows 2012
+ - name: ie
+ version: [6..9, latest]
+ - name: iphone
+ version: oldest..latest
+ - name: android
+ version: oldest..latest
diff --git a/History.md b/History.md
new file mode 100644
index 0000000..bf865a2
--- /dev/null
+++ b/History.md
@@ -0,0 +1,468 @@
+
+1.5.1 / 2015-01-19
+==================
+
+ * do not rely on `git(1)` for dep, point to tarball instead
+
+1.5.0 / 2015-01-18
+==================
+
+ * package: bump `engine.io-parser`
+ * fix IE tests firing too many connections [rase-]
+ * fix default port detection when host is specified [defunctzombie]
+ * add support for custom SSL options in constructor [rase-]
+ * only call xhr.abort() on error cases in `polling-xhr` [samcday]
+
+1.4.3 / 2014-11-21
+==================
+
+ * support: make the build system work with the latest browserify
+ * test: remove test with partial browser support
+ * Fixed calls to addEventListener in old browsers
+
+1.4.2 / 2014-10-27
+==================
+
+ * remove invalid value for strict mode
+ * IE10 should prefer using XHR2 over XDR because it's safer
+ * fixed transport close deferring logic [nkzawa]
+ * wait for buffer to be drained before closing [nkzawa]
+
+1.4.1 / 2014-10-03
+==================
+
+ * Fixed "jsonp polling iframe removal error"
+ * Move ws upgrade needing connection tests to a block checking browser support.
+ * check `readyState` in `sendPacket` and close on `upgradeError` too
+ * defer close while upgrading a transport
+
+1.4.0 / 2014-09-03
+==================
+
+ * add matrix support for travis runs.
+ * add `enablesXDR` option to turn on `XDomainRequest`
+ * package: bump `browserify`
+ * package: bump `engine.io-parser`
+ * style and close socket after assert
+ * add support for `jsonp` option to turn it off
+
+1.3.1 / 2014-06-19
+==================
+
+ * transport: catch utf8 decode errors
+
+1.3.0 / 2014-06-13
+==================
+
+ * smaller inherits utility
+ * fix a test for ws
+ * upgrade emitter dep to not rely on tarball
+
+1.2.2 / 2014-05-30
+==================
+
+ * package: bump `engine.io-parser` for binary utf8 fix
+
+1.2.1 / 2014-05-22
+==================
+
+ * build
+
+1.2.0 / 2014-05-18
+==================
+
+ * removed flashsocket, moving to userland
+ * new build
+
+1.1.1 / 2014-05-14
+==================
+
+ * jsonp-polling: fixed newline double escaping
+ * package: bump parser
+ * remove legacy Socket#onopen call
+ * added tests for multibyte strings
+
+1.1.0 / 2014-04-27
+==================
+
+ * bump zuul version
+ * renamed removeAllListeners to cleanup
+ * use inherits package instead of inherit
+ * removed all references to util.js
+ * fix if statement in FlashWS.ready method
+ * polling-jsonp: prevent spurious errors from being emitted when the window is unloaded
+ * polling-xhr: fix a comment and remove unneeded `document` reference
+ * enforce cache busting for all user agents
+ * JSONP and test fixes for fails in IE
+ * package: bump `engine.io-parser`
+ * polling-xhr: abort the request when the window is unloaded
+
+1.0.5 / 2014-03-18
+==================
+
+ * package: bump `engine.io-parser` for android binary fix
+
+1.0.4 / 2014-03-14
+==================
+
+ * no base64 encoding for no reason when using websockets
+
+1.0.3 / 2014-03-12
+==================
+
+ * fix browserify
+
+1.0.2 / 2014-03-12
+==================
+
+ * bump `engine.io-parser`
+ * made `parseJSON` and `parseURI` from `util` their own modules [gkoren]
+ * clean up tests
+ * clean up browserify
+
+1.0.1 / 2014-03-06
+==================
+
+ * package: bump `engine.io-parser`
+
+1.0.0 / 2014-03-06
+==================
+
+ * run browserify without shims
+ * emit socket upgrade event after upgrade done
+ * better feature detection for XHR2
+ * added `rememberUpgrade` option
+ * binary support
+
+0.9.0 / 2014-02-09
+==================
+
+ * Fix simple `host:port` URLs and IPV6 [bmalehorn]
+ * Fix XHR cleanup method [poohlty]
+ * Match semantics of `close` event with `WebSocket`. If an error occurs
+ and `open` hadn't fired before, we still emit `close` as per
+ WebSocket spec [mokesmokes].
+ * Removed SPEC (now in `engine.io-protocol` repository)
+ * Remove `Socket#open` docs (private API) [mokesmokes]
+
+0.8.2 / 2014-01-18
+==================
+
+ * polling-xhr: avoid catching user-thrown errors
+ * util: remove unused `hasCORS`
+ * polling: remove deferring for faster startup (fixes #174)
+ * engine now works perfectly on workers
+
+0.8.1 / 2014-01-17
+==================
+
+ * package: bump debug to fix `localStorage` issue (fixes #213)
+ * remove duplicate xmlhttprequest code
+ * add iphone automated testing
+ * bump zuul to 1.3.0 to improve tests performance
+ * use invalid ip address for incorrect connection test
+ * Fix GH-224, remove sockets array
+
+0.8.0 / 2014-01-05
+==================
+
+ * socket: emit upgrade errors as `upgradeError` instead of `error`
+
+0.7.14 / 2014-01-01
+===================
+
+ * test: increase timeouts for network tests
+ * test: whitelist globals
+ * test: improve socket closing test
+ * polling: improve url timestamp for ie11 and allow force disabling
+ * polling-xhr: handle errors for xhr creation (fixes `access denied` issues)
+ * polling-xhr: style
+ * socket: more instrumentation for transport creation
+ * socket: allow explicit `false` for `timestampRequests`
+ * socket: accept `null` as first argument
+ * Makefile: cleanup
+ * .travis: deprecate 0.6
+
+0.7.13 / 2013-12-20
+===================
+
+ * use `jsonp` in favor of `XDomainRequest` to preserve `Cookie`
+ headers in all situations [3rd-eden] (fixes #217)
+ * run zuul tests after node tests [defunctzombie]
+ * add zuul support for easier browser testing [defunctzombie]
+
+0.7.12 / 2013-11-11
+===================
+
+ * engine.io: updated build to fix WebSocket constructor issue
+ * package: move browserify into devDeps
+
+0.7.11 / 2013-11-06
+===================
+
+ * AMD support
+ * Makefile: build now smaller thanks to browserify
+ * add browserify support
+
+0.7.10 / 2013-10-28
+===================
+
+ * fixed issue which prevented IE9 and under to pass Cookies to server during handshake
+ * package: update "ws" to v0.4.31
+ * fixed - there is no host property only hostname
+ * fixed - flash socket creation
+ * fixed - emit errors thrown by xhr.send()
+
+0.7.9 / 2013-08-30
+==================
+
+ * websocket: pass `undefined` as the WebSocket "protocols"
+
+0.7.8 / 2013-08-30
+==================
+
+ * package: update "ws"
+
+0.7.7 / 2013-08-30
+==================
+
+ * package: bump ws to 0.4.30
+ * websocket: no more env sniffing, just require `ws` [TooTallNate]
+ * websocket: remove the "bufferedAmount" checking logic [TooTallNate]
+
+0.7.6 / 2013-08-30
+==================
+
+ * package: revert ws to avoid upgrade fail now
+
+0.7.5 / 2013-08-30
+==================
+
+ * package: bump ws to 0.4.30
+
+0.7.4 / 2013-08-25
+==================
+
+ * package: rolling back to `ws` `0.4.25` due to disconnection bug
+
+0.7.3 / 2013-08-23
+==================
+
+ * noop bump
+
+0.7.2 / 2013-08-23
+==================
+
+ * transports: fix WebSocket transport in the web browser (again)
+
+0.7.1 / 2013-08-23
+==================
+
+ * transports: fix WebSocket transport in the web browser
+ * package: upgrade "ws" to v0.4.29
+
+0.7.0 / 2013-08-23
+==================
+
+ * socket: add `agent` option
+ * package: point "xmlhttprequest" to our LearnBoost fork for agent support
+ * package: specify a newer version of "ws" that includes `agent` support
+ * util: use "component/has-cors"
+ * transport: fix whitespace
+ * util: use "component/global"
+ * package: Add repository field to readme
+ * socket: Don't lose packets writen during upgrade after a re-open
+ * socket: use a consistent "debug" name for socket.js
+ * package: Update emitter dep to 1.0.1 for old IE support
+
+0.6.3 / 2013-06-21
+==================
+
+ * fix check readyState in polling transport (Naoyuki Kanezawa)
+ * use http url in npm dependencies for emitter (Eric Schoffstall)
+
+0.6.2 / 2013-06-15
+==================
+
+ * transports: improve polling orderly close (fixes #164)
+ * socket: ignore further transport communication upon `onClose`
+ * socket: added missing `socket#onerror` support
+ * socket: don't call `socket#onclose` if previous state was not `open`
+ * transports: fix iOS5 crash issue
+ * Makefile: extra precaution when building to avoid 0.6.0 build problem
+
+0.6.1 / 2013-06-06
+==================
+
+ * engine.io: fixed build
+
+0.6.0 / 2013-05-31
+==================
+
+ * does not emit close on incorrect socket connection
+ * use indexof component for ie8 and below
+ * improved x-domain handling
+ * introduce public `ping` api
+ * added drain event
+ * fix `flush` and `flushComplete` events
+ * fixed `drain` bug splicing with upgrading
+ * add support for callbacks with socket.send()
+
+0.5.0 / 2013-03-16
+==================
+
+ * socket: implement qs support for `string`
+ * added query.EIO to take protocol version from parser
+ * use istanbul for code coverage
+ * integrated engine.io-protocol 0.3.0
+ * updated ws
+ * fixed JSONPPolling iframe removal error
+ * changed error message to match xhr error message on jsonp transport script tag
+ * Added onerror handler for script tag in jsonp transport
+ * remove uid qs
+ * Added missing colon in payload. Thanks @lsm
+
+0.4.3 / 2013-02-08
+==================
+
+ * package: removed unusued `parser.js`
+
+0.4.2 / 2013-02-08
+==================
+
+ * polling-jsonp: fix ie6 JSONP on SSL
+ * close also if socket.readyState is on "opening"
+ * parser.js: removed the file package.json: added the engine.io-parser dependency everything else: switched to engine.io-parser
+ * fix "TypeError: Object #<Object> has no method 'global'"
+ * client now ignores unsupported upgrades
+
+0.4.1 / 2013-01-18
+==================
+
+ * do not shadow global XMLHttpRequest
+ * socket: added `data` event (as synonym to `message`)
+ * socket: remove `resource` and fix `path`
+ * socket: fixed access to `opts`
+ * test: fixed transports tests
+ * socket: constructor can accept uri/opts simultaneously
+ * SPEC: simplified: removed resource from SPEC
+ * socket: proper `host`/`hostname` support
+ * socket: ensure `onclose` idempotency
+ * socket: added `onerror` instrumentation
+ * socket: fix style
+ * use window to detect platform and fix global reference
+ * *: fix references to `global` (fixes #79)
+
+0.4.0 / 2012-12-09
+==================
+
+ * *: now based on `component(1)`
+ * *: module now exports `Socket`
+ * socket: export constructors, utils and `protocol`
+ * *: implemented `emitter` component
+ * *: removed browserbuild and preprocessor instructions
+
+0.3.10 / 2012-12-03
+===================
+
+ * socket: fix closing the socket in an `open` listener [mmastrac]
+ * socket: perform ping interval/timer cleanup [mmastrac]
+ * fix SPEC (packages -> packets) [jxck]
+ * socket: handle probe's transport errors [indutny]
+
+0.3.9 / 2012-10-23
+==================
+
+ * socket: fix `hostname` instead of `host`
+ * socket: avoid duplicate `port` defaults
+
+0.3.8 / 2012-10-23
+==================
+
+ * socket: introduce introspection hooks
+ * socket: introduced `host` and `port` `location` defaults
+ * flashsocket: obfuscate activex (fixes #31)
+ * README: documented reconnect (closes #45)
+ * socket: unset `id` upon close
+ * socket: clear transport listeners upon force close
+
+0.3.7 / 2012-10-21
+==================
+
+ * fix `version` [quackingduck]
+ * ping timeout gets reset upon any packet received [indutny]
+ * timeout fixes [cadorn, indutny]
+ * transport: fix xdomain detection in absence of location.port (GH-38)
+ * socket: fix passing `false` as secure getting overridden
+ * socket: default `secure` to `true` for SSL-served pages
+ * socket: fix default port for SSL when `secure` is not supplied
+
+0.3.6 / 2012-10-16
+==================
+
+ * socket: reset timeout on any incoming data [indutny]
+
+0.3.5 / 2012-10-14
+==================
+
+ * new build
+
+0.3.4 / 2012-10-14
+==================
+
+ * package: fix `component` exports
+
+0.3.3 / 2012-10-10
+==================
+
+ * socket: fix `secure` default value discovery [quackingduck]
+
+0.3.2 / 2012-10-08
+==================
+
+ * Bump
+
+0.3.1 / 2012-10-08
+==================
+
+ * socket: added `write` alias for `send`
+ * package: added `component`
+
+0.3.0 / 2012-09-04
+==================
+
+ * IE's XDomainRequest cannot do requests that go from HTTPS to HTTP or HTTP to HTTPS [mixu]
+ * Switch to client-initiated ping, and set interval in handshake [cadorn]
+
+0.2.2 / 2012-08-26
+==================
+
+ * polling-jsonp: allow unneeded global leak (fixes #41)
+ * polling-jsonp: allow for multiple eio's in the same page
+
+0.2.1 / 2012-08-13
+==================
+
+ * Bump
+
+0.2.0 / 2012-08-06
+==================
+
+ * polling: introduced `poll` and `pollComplete` (formerly `poll`) events
+
+0.1.2 / 2012-08-02
+==================
+
+ * Bump
+
+0.1.1 / 2012-08-01
+==================
+
+ * Added options for request timestamping
+ * Made timestamp query param customizable
+ * Added automatic timestamping for Android
+
+0.1.0 / 2012-07-03
+==================
+
+ * Initial release.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..203b4b5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,37 @@
+
+REPORTER = dot
+
+build: engine.io.js
+
+engine.io.js: lib/*.js lib/transports/*.js package.json
+ @./support/browserify.sh > engine.io.js
+
+test:
+ @if [ "x$(BROWSER_NAME)" = "x" ]; then make test-node; else make test-zuul; fi
+
+test-node:
+ @./node_modules/.bin/mocha \
+ --reporter $(REPORTER) \
+ test/index.js
+
+test-zuul:
+ @if [ "x$(BROWSER_PLATFORM)" = "x" ]; then \
+ ./node_modules/zuul/bin/zuul \
+ --browser-name $(BROWSER_NAME) \
+ --browser-version $(BROWSER_VERSION) \
+ test/index.js; \
+ else \
+ ./node_modules/zuul/bin/zuul \
+ --browser-name $(BROWSER_NAME) \
+ --browser-version $(BROWSER_VERSION) \
+ --browser-platform "$(BROWSER_PLATFORM)" \
+ test/index.js; \
+ fi
+
+test-cov:
+ @./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha -- \
+ --require ./test/common \
+ --reporter $(REPORTER) \
+ $(TESTS)
+
+.PHONY: test build
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9d4f6a2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,265 @@
+
+# Engine.IO client
+
+[](http://travis-ci.org/Automattic/engine.io-client)
+[](http://badge.fury.io/js/engine.io-client)
+
+This is the client for [Engine.IO](http://github.com/automattic/engine.io),
+the implementation of transport-based cross-browser/cross-device
+bi-directional communication layer for [Socket.IO](http://github.com/automattic/socket.io).
+
+## How to use
+
+### Standalone
+
+You can find an `engine.io.js` file in this repository, which is a
+standalone build you can use as follows:
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+ // eio = Socket
+ var socket = eio('ws://localhost');
+ socket.on('open', function(){
+ socket.on('message', function(data){});
+ socket.on('close', function(){});
+ });
+</script>
+```
+
+### With browserify
+
+Engine.IO is a commonjs module, which means you can include it by using
+`require` on the browser and package using [browserify](http://browserify.org/):
+
+1. install the client package
+
+ ```bash
+ $ npm install engine.io-client
+ ```
+
+1. write your app code
+
+ ```js
+ var socket = require('engine.io-client')('ws://localhost');
+ socket.on('open', function(){
+ socket.on('message', function(data){});
+ socket.on('close', function(){});
+ });
+ ```
+
+1. build your app bundle
+
+ ```bash
+ $ browserify app.js > bundle.js
+ ```
+
+1. include on your page
+
+ ```html
+ <script src="/path/to/bundle.js"></script>
+ ```
+
+### Sending and receiving binary
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+ var socket = new eio.Socket('ws://localhost/');
+ socket.binaryType = 'blob';
+ socket.on('open', function () {
+ socket.send(new Int8Array(5));
+ socket.on('message', function(blob){});
+ socket.on('close', function(){ });
+ });
+</script>
+```
+
+### Node.JS
+
+Add `engine.io-client` to your `package.json` and then:
+
+```js
+var socket = require('engine.io-client')('ws://localhost');
+socket.on('open', function(){
+ socket.on('message', function(data){});
+ socket.on('close', function(){});
+});
+```
+
+### Node.js with certificates
+```js
+var opts = {
+ key: fs.readFileSync('test/fixtures/client.key'),
+ cert: fs.readFileSync('test/fixtures/client.crt'),
+ ca: fs.readFileSync('test/fixtures/ca.crt')
+};
+
+var socket = require('engine.io-client')('ws://localhost', opts);
+socket.on('open', function(){
+ socket.on('message', function(data){});
+ socket.on('close', function(){});
+});
+```
+
+## Features
+
+- Lightweight
+- Runs on browser and node.js seamlessly
+- Transports are independent of `Engine`
+ - Easy to debug
+ - Easy to unit test
+- Runs inside HTML5 WebWorker
+- Can send and receive binary data
+ - Receives as ArrayBuffer or Blob when in browser, and Buffer or ArrayBuffer
+ in Node
+ - When XHR2 or WebSockets are used, binary is emitted directly. Otherwise
+ binary is encoded into base64 strings, and decoded when binary types are
+ supported.
+ - With browsers that don't support ArrayBuffer, an object { base64: true,
+ data: dataAsBase64String } is emitted on the `message` event.
+
+## API
+
+### Socket
+
+The client class. Mixes in [Emitter](http://github.com/component/emitter).
+Exposed as `eio` in the browser standalone build.
+
+#### Properties
+
+- `protocol` _(Number)_: protocol revision number
+- `binaryType` _(String)_ : can be set to 'arraybuffer' or 'blob' in browsers,
+ and `buffer` or `arraybuffer` in Node. Blob is only used in browser if it's
+ supported.
+
+#### Events
+
+- `open`
+ - Fired upon successful connection.
+- `message`
+ - Fired when data is received from the server.
+ - **Arguments**
+ - `String` | `ArrayBuffer`: utf-8 encoded data or ArrayBuffer containing
+ binary data
+- `close`
+ - Fired upon disconnection. In compliance with the WebSocket API spec, this event may be
+ fired even if the `open` event does not occur (i.e. due to connection error or `close()`).
+- `error`
+ - Fired when an error occurs.
+- `flush`
+ - Fired upon completing a buffer flush
+- `drain`
+ - Fired after `drain` event of transport if writeBuffer is empty
+- `upgradeError`
+ - Fired if an error occurs with a transport we're trying to upgrade to.
+- `upgrade`
+ - Fired upon upgrade success, after the new transport is set
+
+#### Methods
+
+- **constructor**
+ - Initializes the client
+ - **Parameters**
+ - `String` uri
+ - `Object`: optional, options object
+ - **Options**
+ - `agent` (`http.Agent`): `http.Agent` to use, defaults to `false` (NodeJS only)
+ - `upgrade` (`Boolean`): defaults to true, whether the client should try
+ to upgrade the transport from long-polling to something better.
+ - `forceJSONP` (`Boolean`): forces JSONP for polling transport.
+ - `jsonp` (`Boolean`): determines whether to use JSONP when
+ necessary for polling. If disabled (by settings to false) an error will
+ be emitted (saying "No transports available") if no other transports
+ are available. If another transport is available for opening a
+ connection (e.g. WebSocket) that transport
+ will be used instead.
+ - `forceBase64` (`Boolean`): forces base 64 encoding for polling transport even when XHR2 responseType is available and WebSocket even if the used standard supports binary.
+ - `enablesXDR` (`Boolean`): enables XDomainRequest for IE8 to avoid loading bar flashing with click sound. default to `false` because XDomainRequest has a flaw of not sending cookie.
+ - `timestampRequests` (`Boolean`): whether to add the timestamp with
+ each transport request. Note: this is ignored if the browser is
+ IE or Android, in which case requests are always stamped (`false`)
+ - `timestampParam` (`String`): timestamp parameter (`t`)
+ - `policyPort` (`Number`): port the policy server listens on (`843`)
+ - `path` (`String`): path to connect to, default is `/engine.io`
+ - `transports` (`Array`): a list of transports to try (in order).
+ Defaults to `['polling', 'websocket']`. `Engine`
+ always attempts to connect directly with the first one, provided the
+ feature detection test for it passes.
+ - `rememberUpgrade` (`Boolean`): defaults to false.
+ If true and if the previous websocket connection to the server succeeded,
+ the connection attempt will bypass the normal upgrade process and will initially
+ try websocket. A connection attempt following a transport error will use the
+ normal upgrade process. It is recommended you turn this on only when using
+ SSL/TLS connections, or if you know that your network does not block websockets.
+ - `pfx` (`String`): Certificate, Private key and CA certificates to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+ - `key` (`String`): Private key to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+ - `passphrase` (`String`): A string of passphrase for the private key or pfx. Can be used in Node.js client environment to manually specify certificate information.
+ - `cert` (`String`): Public x509 certificate to use. Can be used in Node.js client environment to manually specify certificate information.
+ - `ca` (`String`|`Array`): An authority certificate or array of authority certificates to check the remote host against.. Can be used in Node.js client environment to manually specify certificate information.
+ - `ciphers` (`String`): A string describing the ciphers to use or exclude. Consult the [cipher format list](http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for details on the format.. Can be used in Node.js client environment to manually specify certificate information.
+ - `rejectUnauthorized` (`Boolean`): If true, the server certificate is verified against the list of supplied CAs. An 'error' event is emitted if verification fails. Verification happens at the connection level, before the HTTP request is sent. Can be used in Node.js client environment to manually specify certificate information.
+- `send`
+ - Sends a message to the server
+ - **Parameters**
+ - `String` | `ArrayBuffer` | `ArrayBufferView` | `Blob`: data to send
+ - `Function`: optional, callback upon `drain`
+- `close`
+ - Disconnects the client.
+
+### Transport
+
+The transport class. Private. _Inherits from EventEmitter_.
+
+#### Events
+
+- `poll`: emitted by polling transports upon starting a new request
+- `pollComplete`: emitted by polling transports upon completing a request
+- `drain`: emitted by polling transports upon a buffer drain
+
+## Tests
+
+`engine.io-client` is used to test
+[engine](http://github.com/automattic/engine.io). Running the `engine.io`
+test suite ensures the client works and vice-versa.
+
+Browser tests are run using [zuul](https://github.com/defunctzombie/zuul). You can
+run the tests locally using the following command.
+
+```
+./node_modules/.bin/zuul --local 8080 -- test/index.js
+```
+
+Additionally, `engine.io-client` has a standalone test suite you can run
+with `make test` which will run node.js and browser tests. You must have zuul setup with
+a saucelabs account.
+
+## Support
+
+The support channels for `engine.io-client` are the same as `socket.io`:
+ - irc.freenode.net **#socket.io**
+ - [Google Groups](http://groups.google.com/group/socket_io)
+ - [Website](http://socket.io)
+
+## Development
+
+To contribute patches, run tests or benchmarks, make sure to clone the
+repository:
+
+```bash
+git clone git://github.com/automattic/engine.io-client.git
+```
+
+Then:
+
+```bash
+cd engine.io-client
+npm install
+```
+
+See the `Tests` section above for how to run tests before submitting any patches.
+
+## License
+
+MIT - Copyright (c) 2014 Automattic, Inc.
+
diff --git a/engine.io.js b/engine.io.js
new file mode 100644
index 0000000..f502946
--- /dev/null
+++ b/engine.io.js
@@ -0,0 +1,4040 @@
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.eio=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find m [...]
+
+module.exports = _dereq_('./lib/');
+
+},{"./lib/":2}],2:[function(_dereq_,module,exports){
+
+module.exports = _dereq_('./socket');
+
+/**
+ * Exports parser
+ *
+ * @api public
+ *
+ */
+module.exports.parser = _dereq_('engine.io-parser');
+
+},{"./socket":3,"engine.io-parser":17}],3:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies.
+ */
+
+var transports = _dereq_('./transports');
+var Emitter = _dereq_('component-emitter');
+var debug = _dereq_('debug')('engine.io-client:socket');
+var index = _dereq_('indexof');
+var parser = _dereq_('engine.io-parser');
+var parseuri = _dereq_('parseuri');
+var parsejson = _dereq_('parsejson');
+var parseqs = _dereq_('parseqs');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Socket;
+
+/**
+ * Noop function.
+ *
+ * @api private
+ */
+
+function noop(){}
+
+/**
+ * Socket constructor.
+ *
+ * @param {String|Object} uri or options
+ * @param {Object} options
+ * @api public
+ */
+
+function Socket(uri, opts){
+ if (!(this instanceof Socket)) return new Socket(uri, opts);
+
+ opts = opts || {};
+
+ if (uri && 'object' == typeof uri) {
+ opts = uri;
+ uri = null;
+ }
+
+ if (uri) {
+ uri = parseuri(uri);
+ opts.host = uri.host;
+ opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
+ opts.port = uri.port;
+ if (uri.query) opts.query = uri.query;
+ }
+
+ this.secure = null != opts.secure ? opts.secure :
+ (global.location && 'https:' == location.protocol);
+
+ if (opts.host) {
+ var pieces = opts.host.split(':');
+ opts.hostname = pieces.shift();
+ if (pieces.length) {
+ opts.port = pieces.pop();
+ } else if (!opts.port) {
+ // if no port is specified manually, use the protocol default
+ opts.port = this.secure ? '443' : '80';
+ }
+ }
+
+ this.agent = opts.agent || false;
+ this.hostname = opts.hostname ||
+ (global.location ? location.hostname : 'localhost');
+ this.port = opts.port || (global.location && location.port ?
+ location.port :
+ (this.secure ? 443 : 80));
+ this.query = opts.query || {};
+ if ('string' == typeof this.query) this.query = parseqs.decode(this.query);
+ this.upgrade = false !== opts.upgrade;
+ this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
+ this.forceJSONP = !!opts.forceJSONP;
+ this.jsonp = false !== opts.jsonp;
+ this.forceBase64 = !!opts.forceBase64;
+ this.enablesXDR = !!opts.enablesXDR;
+ this.timestampParam = opts.timestampParam || 't';
+ this.timestampRequests = opts.timestampRequests;
+ this.transports = opts.transports || ['polling', 'websocket'];
+ this.readyState = '';
+ this.writeBuffer = [];
+ this.callbackBuffer = [];
+ this.policyPort = opts.policyPort || 843;
+ this.rememberUpgrade = opts.rememberUpgrade || false;
+ this.binaryType = null;
+ this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx || null;
+ this.key = opts.key || null;
+ this.passphrase = opts.passphrase || null;
+ this.cert = opts.cert || null;
+ this.ca = opts.ca || null;
+ this.ciphers = opts.ciphers || null;
+ this.rejectUnauthorized = opts.rejectUnauthorized || null;
+
+ this.open();
+}
+
+Socket.priorWebsocketSuccess = false;
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+Socket.Socket = Socket;
+Socket.Transport = _dereq_('./transport');
+Socket.transports = _dereq_('./transports');
+Socket.parser = _dereq_('engine.io-parser');
+
+/**
+ * Creates transport of the given type.
+ *
+ * @param {String} transport name
+ * @return {Transport}
+ * @api private
+ */
+
+Socket.prototype.createTransport = function (name) {
+ debug('creating transport "%s"', name);
+ var query = clone(this.query);
+
+ // append engine.io protocol identifier
+ query.EIO = parser.protocol;
+
+ // transport name
+ query.transport = name;
+
+ // session id if we already have one
+ if (this.id) query.sid = this.id;
+
+ var transport = new transports[name]({
+ agent: this.agent,
+ hostname: this.hostname,
+ port: this.port,
+ secure: this.secure,
+ path: this.path,
+ query: query,
+ forceJSONP: this.forceJSONP,
+ jsonp: this.jsonp,
+ forceBase64: this.forceBase64,
+ enablesXDR: this.enablesXDR,
+ timestampRequests: this.timestampRequests,
+ timestampParam: this.timestampParam,
+ policyPort: this.policyPort,
+ socket: this,
+ pfx: this.pfx,
+ key: this.key,
+ passphrase: this.passphrase,
+ cert: this.cert,
+ ca: this.ca,
+ ciphers: this.ciphers,
+ rejectUnauthorized: this.rejectUnauthorized
+ });
+
+ return transport;
+};
+
+function clone (obj) {
+ var o = {};
+ for (var i in obj) {
+ if (obj.hasOwnProperty(i)) {
+ o[i] = obj[i];
+ }
+ }
+ return o;
+}
+
+/**
+ * Initializes transport to use and starts probe.
+ *
+ * @api private
+ */
+Socket.prototype.open = function () {
+ var transport;
+ if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {
+ transport = 'websocket';
+ } else if (0 == this.transports.length) {
+ // Emit error on next tick so it can be listened to
+ var self = this;
+ setTimeout(function() {
+ self.emit('error', 'No transports available');
+ }, 0);
+ return;
+ } else {
+ transport = this.transports[0];
+ }
+ this.readyState = 'opening';
+
+ // Retry with the next transport if the transport is disabled (jsonp: false)
+ var transport;
+ try {
+ transport = this.createTransport(transport);
+ } catch (e) {
+ this.transports.shift();
+ this.open();
+ return;
+ }
+
+ transport.open();
+ this.setTransport(transport);
+};
+
+/**
+ * Sets the current transport. Disables the existing one (if any).
+ *
+ * @api private
+ */
+
+Socket.prototype.setTransport = function(transport){
+ debug('setting transport %s', transport.name);
+ var self = this;
+
+ if (this.transport) {
+ debug('clearing existing transport %s', this.transport.name);
+ this.transport.removeAllListeners();
+ }
+
+ // set up transport
+ this.transport = transport;
+
+ // set up transport listeners
+ transport
+ .on('drain', function(){
+ self.onDrain();
+ })
+ .on('packet', function(packet){
+ self.onPacket(packet);
+ })
+ .on('error', function(e){
+ self.onError(e);
+ })
+ .on('close', function(){
+ self.onClose('transport close');
+ });
+};
+
+/**
+ * Probes a transport.
+ *
+ * @param {String} transport name
+ * @api private
+ */
+
+Socket.prototype.probe = function (name) {
+ debug('probing transport "%s"', name);
+ var transport = this.createTransport(name, { probe: 1 })
+ , failed = false
+ , self = this;
+
+ Socket.priorWebsocketSuccess = false;
+
+ function onTransportOpen(){
+ if (self.onlyBinaryUpgrades) {
+ var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
+ failed = failed || upgradeLosesBinary;
+ }
+ if (failed) return;
+
+ debug('probe transport "%s" opened', name);
+ transport.send([{ type: 'ping', data: 'probe' }]);
+ transport.once('packet', function (msg) {
+ if (failed) return;
+ if ('pong' == msg.type && 'probe' == msg.data) {
+ debug('probe transport "%s" pong', name);
+ self.upgrading = true;
+ self.emit('upgrading', transport);
+ if (!transport) return;
+ Socket.priorWebsocketSuccess = 'websocket' == transport.name;
+
+ debug('pausing current transport "%s"', self.transport.name);
+ self.transport.pause(function () {
+ if (failed) return;
+ if ('closed' == self.readyState) return;
+ debug('changing transport and sending upgrade packet');
+
+ cleanup();
+
+ self.setTransport(transport);
+ transport.send([{ type: 'upgrade' }]);
+ self.emit('upgrade', transport);
+ transport = null;
+ self.upgrading = false;
+ self.flush();
+ });
+ } else {
+ debug('probe transport "%s" failed', name);
+ var err = new Error('probe error');
+ err.transport = transport.name;
+ self.emit('upgradeError', err);
+ }
+ });
+ }
+
+ function freezeTransport() {
+ if (failed) return;
+
+ // Any callback called by transport should be ignored since now
+ failed = true;
+
+ cleanup();
+
+ transport.close();
+ transport = null;
+ }
+
+ //Handle any error that happens while probing
+ function onerror(err) {
+ var error = new Error('probe error: ' + err);
+ error.transport = transport.name;
+
+ freezeTransport();
+
+ debug('probe transport "%s" failed because of error: %s', name, err);
+
+ self.emit('upgradeError', error);
+ }
+
+ function onTransportClose(){
+ onerror("transport closed");
+ }
+
+ //When the socket is closed while we're probing
+ function onclose(){
+ onerror("socket closed");
+ }
+
+ //When the socket is upgraded while we're probing
+ function onupgrade(to){
+ if (transport && to.name != transport.name) {
+ debug('"%s" works - aborting "%s"', to.name, transport.name);
+ freezeTransport();
+ }
+ }
+
+ //Remove all listeners on the transport and on self
+ function cleanup(){
+ transport.removeListener('open', onTransportOpen);
+ transport.removeListener('error', onerror);
+ transport.removeListener('close', onTransportClose);
+ self.removeListener('close', onclose);
+ self.removeListener('upgrading', onupgrade);
+ }
+
+ transport.once('open', onTransportOpen);
+ transport.once('error', onerror);
+ transport.once('close', onTransportClose);
+
+ this.once('close', onclose);
+ this.once('upgrading', onupgrade);
+
+ transport.open();
+
+};
+
+/**
+ * Called when connection is deemed open.
+ *
+ * @api public
+ */
+
+Socket.prototype.onOpen = function () {
+ debug('socket open');
+ this.readyState = 'open';
+ Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
+ this.emit('open');
+ this.flush();
+
+ // we check for `readyState` in case an `open`
+ // listener already closed the socket
+ if ('open' == this.readyState && this.upgrade && this.transport.pause) {
+ debug('starting upgrade probes');
+ for (var i = 0, l = this.upgrades.length; i < l; i++) {
+ this.probe(this.upgrades[i]);
+ }
+ }
+};
+
+/**
+ * Handles a packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.onPacket = function (packet) {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+
+ this.emit('packet', packet);
+
+ // Socket is live - any packet counts
+ this.emit('heartbeat');
+
+ switch (packet.type) {
+ case 'open':
+ this.onHandshake(parsejson(packet.data));
+ break;
+
+ case 'pong':
+ this.setPing();
+ break;
+
+ case 'error':
+ var err = new Error('server error');
+ err.code = packet.data;
+ this.emit('error', err);
+ break;
+
+ case 'message':
+ this.emit('data', packet.data);
+ this.emit('message', packet.data);
+ break;
+ }
+ } else {
+ debug('packet received with socket readyState "%s"', this.readyState);
+ }
+};
+
+/**
+ * Called upon handshake completion.
+ *
+ * @param {Object} handshake obj
+ * @api private
+ */
+
+Socket.prototype.onHandshake = function (data) {
+ this.emit('handshake', data);
+ this.id = data.sid;
+ this.transport.query.sid = data.sid;
+ this.upgrades = this.filterUpgrades(data.upgrades);
+ this.pingInterval = data.pingInterval;
+ this.pingTimeout = data.pingTimeout;
+ this.onOpen();
+ // In case open handler closes socket
+ if ('closed' == this.readyState) return;
+ this.setPing();
+
+ // Prolong liveness of socket on heartbeat
+ this.removeListener('heartbeat', this.onHeartbeat);
+ this.on('heartbeat', this.onHeartbeat);
+};
+
+/**
+ * Resets ping timeout.
+ *
+ * @api private
+ */
+
+Socket.prototype.onHeartbeat = function (timeout) {
+ clearTimeout(this.pingTimeoutTimer);
+ var self = this;
+ self.pingTimeoutTimer = setTimeout(function () {
+ if ('closed' == self.readyState) return;
+ self.onClose('ping timeout');
+ }, timeout || (self.pingInterval + self.pingTimeout));
+};
+
+/**
+ * Pings server every `this.pingInterval` and expects response
+ * within `this.pingTimeout` or closes connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.setPing = function () {
+ var self = this;
+ clearTimeout(self.pingIntervalTimer);
+ self.pingIntervalTimer = setTimeout(function () {
+ debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
+ self.ping();
+ self.onHeartbeat(self.pingTimeout);
+ }, self.pingInterval);
+};
+
+/**
+* Sends a ping packet.
+*
+* @api public
+*/
+
+Socket.prototype.ping = function () {
+ this.sendPacket('ping');
+};
+
+/**
+ * Called on `drain` event
+ *
+ * @api private
+ */
+
+Socket.prototype.onDrain = function() {
+ for (var i = 0; i < this.prevBufferLen; i++) {
+ if (this.callbackBuffer[i]) {
+ this.callbackBuffer[i]();
+ }
+ }
+
+ this.writeBuffer.splice(0, this.prevBufferLen);
+ this.callbackBuffer.splice(0, this.prevBufferLen);
+
+ // setting prevBufferLen = 0 is very important
+ // for example, when upgrading, upgrade packet is sent over,
+ // and a nonzero prevBufferLen could cause problems on `drain`
+ this.prevBufferLen = 0;
+
+ if (this.writeBuffer.length == 0) {
+ this.emit('drain');
+ } else {
+ this.flush();
+ }
+};
+
+/**
+ * Flush write buffers.
+ *
+ * @api private
+ */
+
+Socket.prototype.flush = function () {
+ if ('closed' != this.readyState && this.transport.writable &&
+ !this.upgrading && this.writeBuffer.length) {
+ debug('flushing %d packets in socket', this.writeBuffer.length);
+ this.transport.send(this.writeBuffer);
+ // keep track of current length of writeBuffer
+ // splice writeBuffer and callbackBuffer on `drain`
+ this.prevBufferLen = this.writeBuffer.length;
+ this.emit('flush');
+ }
+};
+
+/**
+ * Sends a message.
+ *
+ * @param {String} message.
+ * @param {Function} callback function.
+ * @return {Socket} for chaining.
+ * @api public
+ */
+
+Socket.prototype.write =
+Socket.prototype.send = function (msg, fn) {
+ this.sendPacket('message', msg, fn);
+ return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {String} packet type.
+ * @param {String} data.
+ * @param {Function} callback function.
+ * @api private
+ */
+
+Socket.prototype.sendPacket = function (type, data, fn) {
+ if ('closing' == this.readyState || 'closed' == this.readyState) {
+ return;
+ }
+
+ var packet = { type: type, data: data };
+ this.emit('packetCreate', packet);
+ this.writeBuffer.push(packet);
+ this.callbackBuffer.push(fn);
+ this.flush();
+};
+
+/**
+ * Closes the connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.close = function () {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ this.readyState = 'closing';
+
+ var self = this;
+
+ function close() {
+ self.onClose('forced close');
+ debug('socket closing - telling transport to close');
+ self.transport.close();
+ }
+
+ function cleanupAndClose() {
+ self.removeListener('upgrade', cleanupAndClose);
+ self.removeListener('upgradeError', cleanupAndClose);
+ close();
+ }
+
+ function waitForUpgrade() {
+ // wait for upgrade to finish since we can't send packets while pausing a transport
+ self.once('upgrade', cleanupAndClose);
+ self.once('upgradeError', cleanupAndClose);
+ }
+
+ if (this.writeBuffer.length) {
+ this.once('drain', function() {
+ if (this.upgrading) {
+ waitForUpgrade();
+ } else {
+ close();
+ }
+ });
+ } else if (this.upgrading) {
+ waitForUpgrade();
+ } else {
+ close();
+ }
+ }
+
+ return this;
+};
+
+/**
+ * Called upon transport error
+ *
+ * @api private
+ */
+
+Socket.prototype.onError = function (err) {
+ debug('socket error %j', err);
+ Socket.priorWebsocketSuccess = false;
+ this.emit('error', err);
+ this.onClose('transport error', err);
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @api private
+ */
+
+Socket.prototype.onClose = function (reason, desc) {
+ if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {
+ debug('socket close with reason: "%s"', reason);
+ var self = this;
+
+ // clear timers
+ clearTimeout(this.pingIntervalTimer);
+ clearTimeout(this.pingTimeoutTimer);
+
+ // clean buffers in next tick, so developers can still
+ // grab the buffers on `close` event
+ setTimeout(function() {
+ self.writeBuffer = [];
+ self.callbackBuffer = [];
+ self.prevBufferLen = 0;
+ }, 0);
+
+ // stop event from firing again for transport
+ this.transport.removeAllListeners('close');
+
+ // ensure transport won't stay open
+ this.transport.close();
+
+ // ignore further transport communication
+ this.transport.removeAllListeners();
+
+ // set ready state
+ this.readyState = 'closed';
+
+ // clear session id
+ this.id = null;
+
+ // emit close event
+ this.emit('close', reason, desc);
+ }
+};
+
+/**
+ * Filters upgrades, returning only those matching client transports.
+ *
+ * @param {Array} server upgrades
+ * @api private
+ *
+ */
+
+Socket.prototype.filterUpgrades = function (upgrades) {
+ var filteredUpgrades = [];
+ for (var i = 0, j = upgrades.length; i<j; i++) {
+ if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
+ }
+ return filteredUpgrades;
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./transport":4,"./transports":5,"component-emitter":12,"debug":14,"engine.io-parser":17,"indexof":27,"parsejson":28,"parseqs":29,"parseuri":30}],4:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var parser = _dereq_('engine.io-parser');
+var Emitter = _dereq_('component-emitter');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Transport;
+
+/**
+ * Transport abstract constructor.
+ *
+ * @param {Object} options.
+ * @api private
+ */
+
+function Transport (opts) {
+ this.path = opts.path;
+ this.hostname = opts.hostname;
+ this.port = opts.port;
+ this.secure = opts.secure;
+ this.query = opts.query;
+ this.timestampParam = opts.timestampParam;
+ this.timestampRequests = opts.timestampRequests;
+ this.readyState = '';
+ this.agent = opts.agent || false;
+ this.socket = opts.socket;
+ this.enablesXDR = opts.enablesXDR;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx;
+ this.key = opts.key;
+ this.passphrase = opts.passphrase;
+ this.cert = opts.cert;
+ this.ca = opts.ca;
+ this.ciphers = opts.ciphers;
+ this.rejectUnauthorized = opts.rejectUnauthorized;
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Transport.prototype);
+
+/**
+ * A counter used to prevent collisions in the timestamps used
+ * for cache busting.
+ */
+
+Transport.timestamps = 0;
+
+/**
+ * Emits an error.
+ *
+ * @param {String} str
+ * @return {Transport} for chaining
+ * @api public
+ */
+
+Transport.prototype.onError = function (msg, desc) {
+ var err = new Error(msg);
+ err.type = 'TransportError';
+ err.description = desc;
+ this.emit('error', err);
+ return this;
+};
+
+/**
+ * Opens the transport.
+ *
+ * @api public
+ */
+
+Transport.prototype.open = function () {
+ if ('closed' == this.readyState || '' == this.readyState) {
+ this.readyState = 'opening';
+ this.doOpen();
+ }
+
+ return this;
+};
+
+/**
+ * Closes the transport.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function () {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ this.doClose();
+ this.onClose();
+ }
+
+ return this;
+};
+
+/**
+ * Sends multiple packets.
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+Transport.prototype.send = function(packets){
+ if ('open' == this.readyState) {
+ this.write(packets);
+ } else {
+ throw new Error('Transport not open');
+ }
+};
+
+/**
+ * Called upon open
+ *
+ * @api private
+ */
+
+Transport.prototype.onOpen = function () {
+ this.readyState = 'open';
+ this.writable = true;
+ this.emit('open');
+};
+
+/**
+ * Called with data.
+ *
+ * @param {String} data
+ * @api private
+ */
+
+Transport.prototype.onData = function(data){
+ var packet = parser.decodePacket(data, this.socket.binaryType);
+ this.onPacket(packet);
+};
+
+/**
+ * Called with a decoded packet.
+ */
+
+Transport.prototype.onPacket = function (packet) {
+ this.emit('packet', packet);
+};
+
+/**
+ * Called upon close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+ this.readyState = 'closed';
+ this.emit('close');
+};
+
+},{"component-emitter":12,"engine.io-parser":17}],5:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies
+ */
+
+var XMLHttpRequest = _dereq_('xmlhttprequest');
+var XHR = _dereq_('./polling-xhr');
+var JSONP = _dereq_('./polling-jsonp');
+var websocket = _dereq_('./websocket');
+
+/**
+ * Export transports.
+ */
+
+exports.polling = polling;
+exports.websocket = websocket;
+
+/**
+ * Polling transport polymorphic constructor.
+ * Decides on xhr vs jsonp based on feature detection.
+ *
+ * @api private
+ */
+
+function polling(opts){
+ var xhr;
+ var xd = false;
+ var xs = false;
+ var jsonp = false !== opts.jsonp;
+
+ if (global.location) {
+ var isSSL = 'https:' == location.protocol;
+ var port = location.port;
+
+ // some user agents have empty `location.port`
+ if (!port) {
+ port = isSSL ? 443 : 80;
+ }
+
+ xd = opts.hostname != location.hostname || port != opts.port;
+ xs = opts.secure != isSSL;
+ }
+
+ opts.xdomain = xd;
+ opts.xscheme = xs;
+ xhr = new XMLHttpRequest(opts);
+
+ if ('open' in xhr && !opts.forceJSONP) {
+ return new XHR(opts);
+ } else {
+ if (!jsonp) throw new Error('JSONP disabled');
+ return new JSONP(opts);
+ }
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling-jsonp":6,"./polling-xhr":7,"./websocket":9,"xmlhttprequest":10}],6:[function(_dereq_,module,exports){
+(function (global){
+
+/**
+ * Module requirements.
+ */
+
+var Polling = _dereq_('./polling');
+var inherit = _dereq_('component-inherit');
+
+/**
+ * Module exports.
+ */
+
+module.exports = JSONPPolling;
+
+/**
+ * Cached regular expressions.
+ */
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+/**
+ * Callbacks count.
+ */
+
+var index = 0;
+
+/**
+ * Noop.
+ */
+
+function empty () { }
+
+/**
+ * JSONP Polling constructor.
+ *
+ * @param {Object} opts.
+ * @api public
+ */
+
+function JSONPPolling (opts) {
+ Polling.call(this, opts);
+
+ this.query = this.query || {};
+
+ // define global callbacks array if not present
+ // we do this here (lazily) to avoid unneeded global pollution
+ if (!callbacks) {
+ // we need to consider multiple engines in the same page
+ if (!global.___eio) global.___eio = [];
+ callbacks = global.___eio;
+ }
+
+ // callback identifier
+ this.index = callbacks.length;
+
+ // add callback to jsonp global
+ var self = this;
+ callbacks.push(function (msg) {
+ self.onData(msg);
+ });
+
+ // append to query string
+ this.query.j = this.index;
+
+ // prevent spurious errors from being emitted when the window is unloaded
+ if (global.document && global.addEventListener) {
+ global.addEventListener('beforeunload', function () {
+ if (self.script) self.script.onerror = empty;
+ }, false);
+ }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(JSONPPolling, Polling);
+
+/*
+ * JSONP only supports binary as base64 encoded strings
+ */
+
+JSONPPolling.prototype.supportsBinary = false;
+
+/**
+ * Closes the socket.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doClose = function () {
+ if (this.script) {
+ this.script.parentNode.removeChild(this.script);
+ this.script = null;
+ }
+
+ if (this.form) {
+ this.form.parentNode.removeChild(this.form);
+ this.form = null;
+ this.iframe = null;
+ }
+
+ Polling.prototype.doClose.call(this);
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doPoll = function () {
+ var self = this;
+ var script = document.createElement('script');
+
+ if (this.script) {
+ this.script.parentNode.removeChild(this.script);
+ this.script = null;
+ }
+
+ script.async = true;
+ script.src = this.uri();
+ script.onerror = function(e){
+ self.onError('jsonp poll error',e);
+ };
+
+ var insertAt = document.getElementsByTagName('script')[0];
+ insertAt.parentNode.insertBefore(script, insertAt);
+ this.script = script;
+
+ var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);
+
+ if (isUAgecko) {
+ setTimeout(function () {
+ var iframe = document.createElement('iframe');
+ document.body.appendChild(iframe);
+ document.body.removeChild(iframe);
+ }, 100);
+ }
+};
+
+/**
+ * Writes with a hidden iframe.
+ *
+ * @param {String} data to send
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+JSONPPolling.prototype.doWrite = function (data, fn) {
+ var self = this;
+
+ if (!this.form) {
+ var form = document.createElement('form');
+ var area = document.createElement('textarea');
+ var id = this.iframeId = 'eio_iframe_' + this.index;
+ var iframe;
+
+ form.className = 'socketio';
+ form.style.position = 'absolute';
+ form.style.top = '-1000px';
+ form.style.left = '-1000px';
+ form.target = id;
+ form.method = 'POST';
+ form.setAttribute('accept-charset', 'utf-8');
+ area.name = 'd';
+ form.appendChild(area);
+ document.body.appendChild(form);
+
+ this.form = form;
+ this.area = area;
+ }
+
+ this.form.action = this.uri();
+
+ function complete () {
+ initIframe();
+ fn();
+ }
+
+ function initIframe () {
+ if (self.iframe) {
+ try {
+ self.form.removeChild(self.iframe);
+ } catch (e) {
+ self.onError('jsonp polling iframe removal error', e);
+ }
+ }
+
+ try {
+ // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+ var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
+ iframe = document.createElement(html);
+ } catch (e) {
+ iframe = document.createElement('iframe');
+ iframe.name = self.iframeId;
+ iframe.src = 'javascript:0';
+ }
+
+ iframe.id = self.iframeId;
+
+ self.form.appendChild(iframe);
+ self.iframe = iframe;
+ }
+
+ initIframe();
+
+ // escape \n to prevent it from being converted into \r\n by some UAs
+ // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
+ data = data.replace(rEscapedNewline, '\\\n');
+ this.area.value = data.replace(rNewline, '\\n');
+
+ try {
+ this.form.submit();
+ } catch(e) {}
+
+ if (this.iframe.attachEvent) {
+ this.iframe.onreadystatechange = function(){
+ if (self.iframe.readyState == 'complete') {
+ complete();
+ }
+ };
+ } else {
+ this.iframe.onload = complete;
+ }
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling":8,"component-inherit":13}],7:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module requirements.
+ */
+
+var XMLHttpRequest = _dereq_('xmlhttprequest');
+var Polling = _dereq_('./polling');
+var Emitter = _dereq_('component-emitter');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:polling-xhr');
+
+/**
+ * Module exports.
+ */
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/**
+ * Empty function
+ */
+
+function empty(){}
+
+/**
+ * XHR Polling constructor.
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function XHR(opts){
+ Polling.call(this, opts);
+
+ if (global.location) {
+ var isSSL = 'https:' == location.protocol;
+ var port = location.port;
+
+ // some user agents have empty `location.port`
+ if (!port) {
+ port = isSSL ? 443 : 80;
+ }
+
+ this.xd = opts.hostname != global.location.hostname ||
+ port != opts.port;
+ this.xs = opts.secure != isSSL;
+ }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(XHR, Polling);
+
+/**
+ * XHR supports binary
+ */
+
+XHR.prototype.supportsBinary = true;
+
+/**
+ * Creates a request.
+ *
+ * @param {String} method
+ * @api private
+ */
+
+XHR.prototype.request = function(opts){
+ opts = opts || {};
+ opts.uri = this.uri();
+ opts.xd = this.xd;
+ opts.xs = this.xs;
+ opts.agent = this.agent || false;
+ opts.supportsBinary = this.supportsBinary;
+ opts.enablesXDR = this.enablesXDR;
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ return new Request(opts);
+};
+
+/**
+ * Sends data.
+ *
+ * @param {String} data to send.
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+XHR.prototype.doWrite = function(data, fn){
+ var isBinary = typeof data !== 'string' && data !== undefined;
+ var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
+ var self = this;
+ req.on('success', fn);
+ req.on('error', function(err){
+ self.onError('xhr post error', err);
+ });
+ this.sendXhr = req;
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+XHR.prototype.doPoll = function(){
+ debug('xhr poll');
+ var req = this.request();
+ var self = this;
+ req.on('data', function(data){
+ self.onData(data);
+ });
+ req.on('error', function(err){
+ self.onError('xhr poll error', err);
+ });
+ this.pollXhr = req;
+};
+
+/**
+ * Request constructor
+ *
+ * @param {Object} options
+ * @api public
+ */
+
+function Request(opts){
+ this.method = opts.method || 'GET';
+ this.uri = opts.uri;
+ this.xd = !!opts.xd;
+ this.xs = !!opts.xs;
+ this.async = false !== opts.async;
+ this.data = undefined != opts.data ? opts.data : null;
+ this.agent = opts.agent;
+ this.isBinary = opts.isBinary;
+ this.supportsBinary = opts.supportsBinary;
+ this.enablesXDR = opts.enablesXDR;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx;
+ this.key = opts.key;
+ this.passphrase = opts.passphrase;
+ this.cert = opts.cert;
+ this.ca = opts.ca;
+ this.ciphers = opts.ciphers;
+ this.rejectUnauthorized = opts.rejectUnauthorized;
+
+ this.create();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Request.prototype);
+
+/**
+ * Creates the XHR object and sends the request.
+ *
+ * @api private
+ */
+
+Request.prototype.create = function(){
+ var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ var xhr = this.xhr = new XMLHttpRequest(opts);
+ var self = this;
+
+ try {
+ debug('xhr open %s: %s', this.method, this.uri);
+ xhr.open(this.method, this.uri, this.async);
+ if (this.supportsBinary) {
+ // This has to be done after open because Firefox is stupid
+ // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
+ xhr.responseType = 'arraybuffer';
+ }
+
+ if ('POST' == this.method) {
+ try {
+ if (this.isBinary) {
+ xhr.setRequestHeader('Content-type', 'application/octet-stream');
+ } else {
+ xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
+ }
+ } catch (e) {}
+ }
+
+ // ie6 check
+ if ('withCredentials' in xhr) {
+ xhr.withCredentials = true;
+ }
+
+ if (this.hasXDR()) {
+ xhr.onload = function(){
+ self.onLoad();
+ };
+ xhr.onerror = function(){
+ self.onError(xhr.responseText);
+ };
+ } else {
+ xhr.onreadystatechange = function(){
+ if (4 != xhr.readyState) return;
+ if (200 == xhr.status || 1223 == xhr.status) {
+ self.onLoad();
+ } else {
+ // make sure the `error` event handler that's user-set
+ // does not throw in the same tick and gets caught here
+ setTimeout(function(){
+ self.onError(xhr.status);
+ }, 0);
+ }
+ };
+ }
+
+ debug('xhr data %s', this.data);
+ xhr.send(this.data);
+ } catch (e) {
+ // Need to defer since .create() is called directly fhrom the constructor
+ // and thus the 'error' event can only be only bound *after* this exception
+ // occurs. Therefore, also, we cannot throw here at all.
+ setTimeout(function() {
+ self.onError(e);
+ }, 0);
+ return;
+ }
+
+ if (global.document) {
+ this.index = Request.requestsCount++;
+ Request.requests[this.index] = this;
+ }
+};
+
+/**
+ * Called upon successful response.
+ *
+ * @api private
+ */
+
+Request.prototype.onSuccess = function(){
+ this.emit('success');
+ this.cleanup();
+};
+
+/**
+ * Called if we have data.
+ *
+ * @api private
+ */
+
+Request.prototype.onData = function(data){
+ this.emit('data', data);
+ this.onSuccess();
+};
+
+/**
+ * Called upon error.
+ *
+ * @api private
+ */
+
+Request.prototype.onError = function(err){
+ this.emit('error', err);
+ this.cleanup(true);
+};
+
+/**
+ * Cleans up house.
+ *
+ * @api private
+ */
+
+Request.prototype.cleanup = function(fromError){
+ if ('undefined' == typeof this.xhr || null === this.xhr) {
+ return;
+ }
+ // xmlhttprequest
+ if (this.hasXDR()) {
+ this.xhr.onload = this.xhr.onerror = empty;
+ } else {
+ this.xhr.onreadystatechange = empty;
+ }
+
+ if (fromError) {
+ try {
+ this.xhr.abort();
+ } catch(e) {}
+ }
+
+ if (global.document) {
+ delete Request.requests[this.index];
+ }
+
+ this.xhr = null;
+};
+
+/**
+ * Called upon load.
+ *
+ * @api private
+ */
+
+Request.prototype.onLoad = function(){
+ var data;
+ try {
+ var contentType;
+ try {
+ contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];
+ } catch (e) {}
+ if (contentType === 'application/octet-stream') {
+ data = this.xhr.response;
+ } else {
+ if (!this.supportsBinary) {
+ data = this.xhr.responseText;
+ } else {
+ data = 'ok';
+ }
+ }
+ } catch (e) {
+ this.onError(e);
+ }
+ if (null != data) {
+ this.onData(data);
+ }
+};
+
+/**
+ * Check if it has XDomainRequest.
+ *
+ * @api private
+ */
+
+Request.prototype.hasXDR = function(){
+ return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
+};
+
+/**
+ * Aborts the request.
+ *
+ * @api public
+ */
+
+Request.prototype.abort = function(){
+ this.cleanup();
+};
+
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+
+if (global.document) {
+ Request.requestsCount = 0;
+ Request.requests = {};
+ if (global.attachEvent) {
+ global.attachEvent('onunload', unloadHandler);
+ } else if (global.addEventListener) {
+ global.addEventListener('beforeunload', unloadHandler, false);
+ }
+}
+
+function unloadHandler() {
+ for (var i in Request.requests) {
+ if (Request.requests.hasOwnProperty(i)) {
+ Request.requests[i].abort();
+ }
+ }
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling":8,"component-emitter":12,"component-inherit":13,"debug":14,"xmlhttprequest":10}],8:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var Transport = _dereq_('../transport');
+var parseqs = _dereq_('parseqs');
+var parser = _dereq_('engine.io-parser');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:polling');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Polling;
+
+/**
+ * Is XHR2 supported?
+ */
+
+var hasXHR2 = (function() {
+ var XMLHttpRequest = _dereq_('xmlhttprequest');
+ var xhr = new XMLHttpRequest({ xdomain: false });
+ return null != xhr.responseType;
+})();
+
+/**
+ * Polling interface.
+ *
+ * @param {Object} opts
+ * @api private
+ */
+
+function Polling(opts){
+ var forceBase64 = (opts && opts.forceBase64);
+ if (!hasXHR2 || forceBase64) {
+ this.supportsBinary = false;
+ }
+ Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(Polling, Transport);
+
+/**
+ * Transport name.
+ */
+
+Polling.prototype.name = 'polling';
+
+/**
+ * Opens the socket (triggers polling). We write a PING message to determine
+ * when the transport is open.
+ *
+ * @api private
+ */
+
+Polling.prototype.doOpen = function(){
+ this.poll();
+};
+
+/**
+ * Pauses polling.
+ *
+ * @param {Function} callback upon buffers are flushed and transport is paused
+ * @api private
+ */
+
+Polling.prototype.pause = function(onPause){
+ var pending = 0;
+ var self = this;
+
+ this.readyState = 'pausing';
+
+ function pause(){
+ debug('paused');
+ self.readyState = 'paused';
+ onPause();
+ }
+
+ if (this.polling || !this.writable) {
+ var total = 0;
+
+ if (this.polling) {
+ debug('we are currently polling - waiting to pause');
+ total++;
+ this.once('pollComplete', function(){
+ debug('pre-pause polling complete');
+ --total || pause();
+ });
+ }
+
+ if (!this.writable) {
+ debug('we are currently writing - waiting to pause');
+ total++;
+ this.once('drain', function(){
+ debug('pre-pause writing complete');
+ --total || pause();
+ });
+ }
+ } else {
+ pause();
+ }
+};
+
+/**
+ * Starts polling cycle.
+ *
+ * @api public
+ */
+
+Polling.prototype.poll = function(){
+ debug('polling');
+ this.polling = true;
+ this.doPoll();
+ this.emit('poll');
+};
+
+/**
+ * Overloads onData to detect payloads.
+ *
+ * @api private
+ */
+
+Polling.prototype.onData = function(data){
+ var self = this;
+ debug('polling got data %s', data);
+ var callback = function(packet, index, total) {
+ // if its the first message we consider the transport open
+ if ('opening' == self.readyState) {
+ self.onOpen();
+ }
+
+ // if its a close packet, we close the ongoing requests
+ if ('close' == packet.type) {
+ self.onClose();
+ return false;
+ }
+
+ // otherwise bypass onData and handle the message
+ self.onPacket(packet);
+ };
+
+ // decode payload
+ parser.decodePayload(data, this.socket.binaryType, callback);
+
+ // if an event did not trigger closing
+ if ('closed' != this.readyState) {
+ // if we got data we're not polling
+ this.polling = false;
+ this.emit('pollComplete');
+
+ if ('open' == this.readyState) {
+ this.poll();
+ } else {
+ debug('ignoring poll - transport state "%s"', this.readyState);
+ }
+ }
+};
+
+/**
+ * For polling, send a close packet.
+ *
+ * @api private
+ */
+
+Polling.prototype.doClose = function(){
+ var self = this;
+
+ function close(){
+ debug('writing close packet');
+ self.write([{ type: 'close' }]);
+ }
+
+ if ('open' == this.readyState) {
+ debug('transport open - closing');
+ close();
+ } else {
+ // in case we're trying to close while
+ // handshaking is in progress (GH-164)
+ debug('transport not open - deferring close');
+ this.once('open', close);
+ }
+};
+
+/**
+ * Writes a packets payload.
+ *
+ * @param {Array} data packets
+ * @param {Function} drain callback
+ * @api private
+ */
+
+Polling.prototype.write = function(packets){
+ var self = this;
+ this.writable = false;
+ var callbackfn = function() {
+ self.writable = true;
+ self.emit('drain');
+ };
+
+ var self = this;
+ parser.encodePayload(packets, this.supportsBinary, function(data) {
+ self.doWrite(data, callbackfn);
+ });
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+Polling.prototype.uri = function(){
+ var query = this.query || {};
+ var schema = this.secure ? 'https' : 'http';
+ var port = '';
+
+ // cache busting is forced
+ if (false !== this.timestampRequests) {
+ query[this.timestampParam] = +new Date + '-' + Transport.timestamps++;
+ }
+
+ if (!this.supportsBinary && !query.sid) {
+ query.b64 = 1;
+ }
+
+ query = parseqs.encode(query);
+
+ // avoid port if default for schema
+ if (this.port && (('https' == schema && this.port != 443) ||
+ ('http' == schema && this.port != 80))) {
+ port = ':' + this.port;
+ }
+
+ // prepend ? to query
+ if (query.length) {
+ query = '?' + query;
+ }
+
+ return schema + '://' + this.hostname + port + this.path + query;
+};
+
+},{"../transport":4,"component-inherit":13,"debug":14,"engine.io-parser":17,"parseqs":29,"xmlhttprequest":10}],9:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var Transport = _dereq_('../transport');
+var parser = _dereq_('engine.io-parser');
+var parseqs = _dereq_('parseqs');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:websocket');
+
+/**
+ * `ws` exposes a WebSocket-compatible interface in
+ * Node, or the `WebSocket` or `MozWebSocket` globals
+ * in the browser.
+ */
+
+var WebSocket = _dereq_('ws');
+
+/**
+ * Module exports.
+ */
+
+module.exports = WS;
+
+/**
+ * WebSocket transport constructor.
+ *
+ * @api {Object} connection options
+ * @api public
+ */
+
+function WS(opts){
+ var forceBase64 = (opts && opts.forceBase64);
+ if (forceBase64) {
+ this.supportsBinary = false;
+ }
+ Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(WS, Transport);
+
+/**
+ * Transport name.
+ *
+ * @api public
+ */
+
+WS.prototype.name = 'websocket';
+
+/*
+ * WebSockets support binary
+ */
+
+WS.prototype.supportsBinary = true;
+
+/**
+ * Opens socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doOpen = function(){
+ if (!this.check()) {
+ // let probe timeout
+ return;
+ }
+
+ var self = this;
+ var uri = this.uri();
+ var protocols = void(0);
+ var opts = { agent: this.agent };
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ this.ws = new WebSocket(uri, protocols, opts);
+
+ if (this.ws.binaryType === undefined) {
+ this.supportsBinary = false;
+ }
+
+ this.ws.binaryType = 'arraybuffer';
+ this.addEventListeners();
+};
+
+/**
+ * Adds event listeners to the socket
+ *
+ * @api private
+ */
+
+WS.prototype.addEventListeners = function(){
+ var self = this;
+
+ this.ws.onopen = function(){
+ self.onOpen();
+ };
+ this.ws.onclose = function(){
+ self.onClose();
+ };
+ this.ws.onmessage = function(ev){
+ self.onData(ev.data);
+ };
+ this.ws.onerror = function(e){
+ self.onError('websocket error', e);
+ };
+};
+
+/**
+ * Override `onData` to use a timer on iOS.
+ * See: https://gist.github.com/mloughran/2052006
+ *
+ * @api private
+ */
+
+if ('undefined' != typeof navigator
+ && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
+ WS.prototype.onData = function(data){
+ var self = this;
+ setTimeout(function(){
+ Transport.prototype.onData.call(self, data);
+ }, 0);
+ };
+}
+
+/**
+ * Writes data to socket.
+ *
+ * @param {Array} array of packets.
+ * @api private
+ */
+
+WS.prototype.write = function(packets){
+ var self = this;
+ this.writable = false;
+ // encodePacket efficient as it uses WS framing
+ // no need for encodePayload
+ for (var i = 0, l = packets.length; i < l; i++) {
+ parser.encodePacket(packets[i], this.supportsBinary, function(data) {
+ //Sometimes the websocket has already been closed but the browser didn't
+ //have a chance of informing us about it yet, in that case send will
+ //throw an error
+ try {
+ self.ws.send(data);
+ } catch (e){
+ debug('websocket closed before onclose event');
+ }
+ });
+ }
+
+ function ondrain() {
+ self.writable = true;
+ self.emit('drain');
+ }
+ // fake drain
+ // defer to next tick to allow Socket to clear writeBuffer
+ setTimeout(ondrain, 0);
+};
+
+/**
+ * Called upon close
+ *
+ * @api private
+ */
+
+WS.prototype.onClose = function(){
+ Transport.prototype.onClose.call(this);
+};
+
+/**
+ * Closes socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doClose = function(){
+ if (typeof this.ws !== 'undefined') {
+ this.ws.close();
+ }
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+WS.prototype.uri = function(){
+ var query = this.query || {};
+ var schema = this.secure ? 'wss' : 'ws';
+ var port = '';
+
+ // avoid port if default for schema
+ if (this.port && (('wss' == schema && this.port != 443)
+ || ('ws' == schema && this.port != 80))) {
+ port = ':' + this.port;
+ }
+
+ // append timestamp to URI
+ if (this.timestampRequests) {
+ query[this.timestampParam] = +new Date;
+ }
+
+ // communicate binary support capabilities
+ if (!this.supportsBinary) {
+ query.b64 = 1;
+ }
+
+ query = parseqs.encode(query);
+
+ // prepend ? to query
+ if (query.length) {
+ query = '?' + query;
+ }
+
+ return schema + '://' + this.hostname + port + this.path + query;
+};
+
+/**
+ * Feature detection for WebSocket.
+ *
+ * @return {Boolean} whether this transport is available.
+ * @api public
+ */
+
+WS.prototype.check = function(){
+ return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
+};
+
+},{"../transport":4,"component-inherit":13,"debug":14,"engine.io-parser":17,"parseqs":29,"ws":31}],10:[function(_dereq_,module,exports){
+// browser shim for xmlhttprequest module
+var hasCORS = _dereq_('has-cors');
+
+module.exports = function(opts) {
+ var xdomain = opts.xdomain;
+
+ // scheme must be same when usign XDomainRequest
+ // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
+ var xscheme = opts.xscheme;
+
+ // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
+ // https://github.com/Automattic/engine.io-client/pull/217
+ var enablesXDR = opts.enablesXDR;
+
+ // XMLHttpRequest can be disabled on IE
+ try {
+ if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+ return new XMLHttpRequest();
+ }
+ } catch (e) { }
+
+ // Use XDomainRequest for IE8 if enablesXDR is true
+ // because loading bar keeps flashing when using jsonp-polling
+ // https://github.com/yujiosaka/socke.io-ie8-loading-example
+ try {
+ if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
+ return new XDomainRequest();
+ }
+ } catch (e) { }
+
+ if (!xdomain) {
+ try {
+ return new ActiveXObject('Microsoft.XMLHTTP');
+ } catch(e) { }
+ }
+}
+
+},{"has-cors":25}],11:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Create a blob builder even when vendor prefixes exist
+ */
+
+var BlobBuilder = global.BlobBuilder
+ || global.WebKitBlobBuilder
+ || global.MSBlobBuilder
+ || global.MozBlobBuilder;
+
+/**
+ * Check if Blob constructor is supported
+ */
+
+var blobSupported = (function() {
+ try {
+ var b = new Blob(['hi']);
+ return b.size == 2;
+ } catch(e) {
+ return false;
+ }
+})();
+
+/**
+ * Check if BlobBuilder is supported
+ */
+
+var blobBuilderSupported = BlobBuilder
+ && BlobBuilder.prototype.append
+ && BlobBuilder.prototype.getBlob;
+
+function BlobBuilderConstructor(ary, options) {
+ options = options || {};
+
+ var bb = new BlobBuilder();
+ for (var i = 0; i < ary.length; i++) {
+ bb.append(ary[i]);
+ }
+ return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
+};
+
+module.exports = (function() {
+ if (blobSupported) {
+ return global.Blob;
+ } else if (blobBuilderSupported) {
+ return BlobBuilderConstructor;
+ } else {
+ return undefined;
+ }
+})();
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],12:[function(_dereq_,module,exports){
+
+/**
+ * Expose `Emitter`.
+ */
+
+module.exports = Emitter;
+
+/**
+ * Initialize a new `Emitter`.
+ *
+ * @api public
+ */
+
+function Emitter(obj) {
+ if (obj) return mixin(obj);
+};
+
+/**
+ * Mixin the emitter properties.
+ *
+ * @param {Object} obj
+ * @return {Object}
+ * @api private
+ */
+
+function mixin(obj) {
+ for (var key in Emitter.prototype) {
+ obj[key] = Emitter.prototype[key];
+ }
+ return obj;
+}
+
+/**
+ * Listen on the given `event` with `fn`.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.on =
+Emitter.prototype.addEventListener = function(event, fn){
+ this._callbacks = this._callbacks || {};
+ (this._callbacks[event] = this._callbacks[event] || [])
+ .push(fn);
+ return this;
+};
+
+/**
+ * Adds an `event` listener that will be invoked a single
+ * time then automatically removed.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.once = function(event, fn){
+ var self = this;
+ this._callbacks = this._callbacks || {};
+
+ function on() {
+ self.off(event, on);
+ fn.apply(this, arguments);
+ }
+
+ on.fn = fn;
+ this.on(event, on);
+ return this;
+};
+
+/**
+ * Remove the given callback for `event` or all
+ * registered callbacks.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.off =
+Emitter.prototype.removeListener =
+Emitter.prototype.removeAllListeners =
+Emitter.prototype.removeEventListener = function(event, fn){
+ this._callbacks = this._callbacks || {};
+
+ // all
+ if (0 == arguments.length) {
+ this._callbacks = {};
+ return this;
+ }
+
+ // specific event
+ var callbacks = this._callbacks[event];
+ if (!callbacks) return this;
+
+ // remove all handlers
+ if (1 == arguments.length) {
+ delete this._callbacks[event];
+ return this;
+ }
+
+ // remove specific handler
+ var cb;
+ for (var i = 0; i < callbacks.length; i++) {
+ cb = callbacks[i];
+ if (cb === fn || cb.fn === fn) {
+ callbacks.splice(i, 1);
+ break;
+ }
+ }
+ return this;
+};
+
+/**
+ * Emit `event` with the given args.
+ *
+ * @param {String} event
+ * @param {Mixed} ...
+ * @return {Emitter}
+ */
+
+Emitter.prototype.emit = function(event){
+ this._callbacks = this._callbacks || {};
+ var args = [].slice.call(arguments, 1)
+ , callbacks = this._callbacks[event];
+
+ if (callbacks) {
+ callbacks = callbacks.slice(0);
+ for (var i = 0, len = callbacks.length; i < len; ++i) {
+ callbacks[i].apply(this, args);
+ }
+ }
+
+ return this;
+};
+
+/**
+ * Return array of callbacks for `event`.
+ *
+ * @param {String} event
+ * @return {Array}
+ * @api public
+ */
+
+Emitter.prototype.listeners = function(event){
+ this._callbacks = this._callbacks || {};
+ return this._callbacks[event] || [];
+};
+
+/**
+ * Check if this emitter has `event` handlers.
+ *
+ * @param {String} event
+ * @return {Boolean}
+ * @api public
+ */
+
+Emitter.prototype.hasListeners = function(event){
+ return !! this.listeners(event).length;
+};
+
+},{}],13:[function(_dereq_,module,exports){
+
+module.exports = function(a, b){
+ var fn = function(){};
+ fn.prototype = b.prototype;
+ a.prototype = new fn;
+ a.prototype.constructor = a;
+};
+},{}],14:[function(_dereq_,module,exports){
+
+/**
+ * This is the web browser implementation of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = _dereq_('./debug');
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+
+/**
+ * Colors.
+ */
+
+exports.colors = [
+ 'lightseagreen',
+ 'forestgreen',
+ 'goldenrod',
+ 'dodgerblue',
+ 'darkorchid',
+ 'crimson'
+];
+
+/**
+ * Currently only WebKit-based Web Inspectors, Firefox >= v31,
+ * and the Firebug extension (any Firefox version) are known
+ * to support "%c" CSS customizations.
+ *
+ * TODO: add a `localStorage` variable to explicitly enable/disable colors
+ */
+
+function useColors() {
+ // is webkit? http://stackoverflow.com/a/16459606/376773
+ return ('WebkitAppearance' in document.documentElement.style) ||
+ // is firebug? http://stackoverflow.com/a/398120/376773
+ (window.console && (console.firebug || (console.exception && console.table))) ||
+ // is firefox >= v31?
+ // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
+ (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
+}
+
+/**
+ * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
+ */
+
+exports.formatters.j = function(v) {
+ return JSON.stringify(v);
+};
+
+
+/**
+ * Colorize log arguments if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs() {
+ var args = arguments;
+ var useColors = this.useColors;
+
+ args[0] = (useColors ? '%c' : '')
+ + this.namespace
+ + (useColors ? ' %c' : ' ')
+ + args[0]
+ + (useColors ? '%c ' : ' ')
+ + '+' + exports.humanize(this.diff);
+
+ if (!useColors) return args;
+
+ var c = 'color: ' + this.color;
+ args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));
+
+ // the final "%c" is somewhat tricky, because there could be other
+ // arguments passed either before or after the %c, so we need to
+ // figure out the correct index to insert the CSS into
+ var index = 0;
+ var lastC = 0;
+ args[0].replace(/%[a-z%]/g, function(match) {
+ if ('%' === match) return;
+ index++;
+ if ('%c' === match) {
+ // we only are interested in the *last* %c
+ // (the user may have provided their own)
+ lastC = index;
+ }
+ });
+
+ args.splice(lastC, 0, c);
+ return args;
+}
+
+/**
+ * Invokes `console.log()` when available.
+ * No-op when `console.log` is not a "function".
+ *
+ * @api public
+ */
+
+function log() {
+ // This hackery is required for IE8,
+ // where the `console.log` function doesn't have 'apply'
+ return 'object' == typeof console
+ && 'function' == typeof console.log
+ && Function.prototype.apply.call(console.log, console, arguments);
+}
+
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+function save(namespaces) {
+ try {
+ if (null == namespaces) {
+ localStorage.removeItem('debug');
+ } else {
+ localStorage.debug = namespaces;
+ }
+ } catch(e) {}
+}
+
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+function load() {
+ var r;
+ try {
+ r = localStorage.debug;
+ } catch(e) {}
+ return r;
+}
+
+/**
+ * Enable namespaces listed in `localStorage.debug` initially.
+ */
+
+exports.enable(load());
+
+},{"./debug":15}],15:[function(_dereq_,module,exports){
+
+/**
+ * This is the common logic for both the Node.js and web browser
+ * implementations of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = debug;
+exports.coerce = coerce;
+exports.disable = disable;
+exports.enable = enable;
+exports.enabled = enabled;
+exports.humanize = _dereq_('ms');
+
+/**
+ * The currently active debug mode names, and names to skip.
+ */
+
+exports.names = [];
+exports.skips = [];
+
+/**
+ * Map of special "%n" handling functions, for the debug "format" argument.
+ *
+ * Valid key names are a single, lowercased letter, i.e. "n".
+ */
+
+exports.formatters = {};
+
+/**
+ * Previously assigned color.
+ */
+
+var prevColor = 0;
+
+/**
+ * Previous log timestamp.
+ */
+
+var prevTime;
+
+/**
+ * Select a color.
+ *
+ * @return {Number}
+ * @api private
+ */
+
+function selectColor() {
+ return exports.colors[prevColor++ % exports.colors.length];
+}
+
+/**
+ * Create a debugger with the given `namespace`.
+ *
+ * @param {String} namespace
+ * @return {Function}
+ * @api public
+ */
+
+function debug(namespace) {
+
+ // define the `disabled` version
+ function disabled() {
+ }
+ disabled.enabled = false;
+
+ // define the `enabled` version
+ function enabled() {
+
+ var self = enabled;
+
+ // set `diff` timestamp
+ var curr = +new Date();
+ var ms = curr - (prevTime || curr);
+ self.diff = ms;
+ self.prev = prevTime;
+ self.curr = curr;
+ prevTime = curr;
+
+ // add the `color` if not set
+ if (null == self.useColors) self.useColors = exports.useColors();
+ if (null == self.color && self.useColors) self.color = selectColor();
+
+ var args = Array.prototype.slice.call(arguments);
+
+ args[0] = exports.coerce(args[0]);
+
+ if ('string' !== typeof args[0]) {
+ // anything else let's inspect with %o
+ args = ['%o'].concat(args);
+ }
+
+ // apply any `formatters` transformations
+ var index = 0;
+ args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
+ // if we encounter an escaped % then don't increase the array index
+ if (match === '%') return match;
+ index++;
+ var formatter = exports.formatters[format];
+ if ('function' === typeof formatter) {
+ var val = args[index];
+ match = formatter.call(self, val);
+
+ // now we need to remove `args[index]` since it's inlined in the `format`
+ args.splice(index, 1);
+ index--;
+ }
+ return match;
+ });
+
+ if ('function' === typeof exports.formatArgs) {
+ args = exports.formatArgs.apply(self, args);
+ }
+ var logFn = enabled.log || exports.log || console.log.bind(console);
+ logFn.apply(self, args);
+ }
+ enabled.enabled = true;
+
+ var fn = exports.enabled(namespace) ? enabled : disabled;
+
+ fn.namespace = namespace;
+
+ return fn;
+}
+
+/**
+ * Enables a debug mode by namespaces. This can include modes
+ * separated by a colon and wildcards.
+ *
+ * @param {String} namespaces
+ * @api public
+ */
+
+function enable(namespaces) {
+ exports.save(namespaces);
+
+ var split = (namespaces || '').split(/[\s,]+/);
+ var len = split.length;
+
+ for (var i = 0; i < len; i++) {
+ if (!split[i]) continue; // ignore empty strings
+ namespaces = split[i].replace(/\*/g, '.*?');
+ if (namespaces[0] === '-') {
+ exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
+ } else {
+ exports.names.push(new RegExp('^' + namespaces + '$'));
+ }
+ }
+}
+
+/**
+ * Disable debug output.
+ *
+ * @api public
+ */
+
+function disable() {
+ exports.enable('');
+}
+
+/**
+ * Returns true if the given mode name is enabled, false otherwise.
+ *
+ * @param {String} name
+ * @return {Boolean}
+ * @api public
+ */
+
+function enabled(name) {
+ var i, len;
+ for (i = 0, len = exports.skips.length; i < len; i++) {
+ if (exports.skips[i].test(name)) {
+ return false;
+ }
+ }
+ for (i = 0, len = exports.names.length; i < len; i++) {
+ if (exports.names[i].test(name)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * Coerce `val`.
+ *
+ * @param {Mixed} val
+ * @return {Mixed}
+ * @api private
+ */
+
+function coerce(val) {
+ if (val instanceof Error) return val.stack || val.message;
+ return val;
+}
+
+},{"ms":16}],16:[function(_dereq_,module,exports){
+/**
+ * Helpers.
+ */
+
+var s = 1000;
+var m = s * 60;
+var h = m * 60;
+var d = h * 24;
+var y = d * 365.25;
+
+/**
+ * Parse or format the given `val`.
+ *
+ * Options:
+ *
+ * - `long` verbose formatting [false]
+ *
+ * @param {String|Number} val
+ * @param {Object} options
+ * @return {String|Number}
+ * @api public
+ */
+
+module.exports = function(val, options){
+ options = options || {};
+ if ('string' == typeof val) return parse(val);
+ return options.long
+ ? long(val)
+ : short(val);
+};
+
+/**
+ * Parse the given `str` and return milliseconds.
+ *
+ * @param {String} str
+ * @return {Number}
+ * @api private
+ */
+
+function parse(str) {
+ var match = /^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i.exec(str);
+ if (!match) return;
+ var n = parseFloat(match[1]);
+ var type = (match[2] || 'ms').toLowerCase();
+ switch (type) {
+ case 'years':
+ case 'year':
+ case 'y':
+ return n * y;
+ case 'days':
+ case 'day':
+ case 'd':
+ return n * d;
+ case 'hours':
+ case 'hour':
+ case 'h':
+ return n * h;
+ case 'minutes':
+ case 'minute':
+ case 'm':
+ return n * m;
+ case 'seconds':
+ case 'second':
+ case 's':
+ return n * s;
+ case 'ms':
+ return n;
+ }
+}
+
+/**
+ * Short format for `ms`.
+ *
+ * @param {Number} ms
+ * @return {String}
+ * @api private
+ */
+
+function short(ms) {
+ if (ms >= d) return Math.round(ms / d) + 'd';
+ if (ms >= h) return Math.round(ms / h) + 'h';
+ if (ms >= m) return Math.round(ms / m) + 'm';
+ if (ms >= s) return Math.round(ms / s) + 's';
+ return ms + 'ms';
+}
+
+/**
+ * Long format for `ms`.
+ *
+ * @param {Number} ms
+ * @return {String}
+ * @api private
+ */
+
+function long(ms) {
+ return plural(ms, d, 'day')
+ || plural(ms, h, 'hour')
+ || plural(ms, m, 'minute')
+ || plural(ms, s, 'second')
+ || ms + ' ms';
+}
+
+/**
+ * Pluralization helper.
+ */
+
+function plural(ms, n, name) {
+ if (ms < n) return;
+ if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
+ return Math.ceil(ms / n) + ' ' + name + 's';
+}
+
+},{}],17:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies.
+ */
+
+var keys = _dereq_('./keys');
+var hasBinary = _dereq_('has-binary');
+var sliceBuffer = _dereq_('arraybuffer.slice');
+var base64encoder = _dereq_('base64-arraybuffer');
+var after = _dereq_('after');
+var utf8 = _dereq_('utf8');
+
+/**
+ * Check if we are running an android browser. That requires us to use
+ * ArrayBuffer with polling transports...
+ *
+ * http://ghinda.net/jpeg-blob-ajax-android/
+ */
+
+var isAndroid = navigator.userAgent.match(/Android/i);
+
+/**
+ * Check if we are running in PhantomJS.
+ * Uploading a Blob with PhantomJS does not work correctly, as reported here:
+ * https://github.com/ariya/phantomjs/issues/11395
+ * @type boolean
+ */
+var isPhantomJS = /PhantomJS/i.test(navigator.userAgent);
+
+/**
+ * When true, avoids using Blobs to encode payloads.
+ * @type boolean
+ */
+var dontSendBlobs = isAndroid || isPhantomJS;
+
+/**
+ * Current protocol version.
+ */
+
+exports.protocol = 3;
+
+/**
+ * Packet types.
+ */
+
+var packets = exports.packets = {
+ open: 0 // non-ws
+ , close: 1 // non-ws
+ , ping: 2
+ , pong: 3
+ , message: 4
+ , upgrade: 5
+ , noop: 6
+};
+
+var packetslist = keys(packets);
+
+/**
+ * Premade error packet.
+ */
+
+var err = { type: 'error', data: 'parser error' };
+
+/**
+ * Create a blob api even for blob builder when vendor prefixes exist
+ */
+
+var Blob = _dereq_('blob');
+
+/**
+ * Encodes a packet.
+ *
+ * <packet type id> [ <data> ]
+ *
+ * Example:
+ *
+ * 5hello world
+ * 3
+ * 4
+ *
+ * Binary is encoded in an identical principle
+ *
+ * @api private
+ */
+
+exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
+ if ('function' == typeof supportsBinary) {
+ callback = supportsBinary;
+ supportsBinary = false;
+ }
+
+ if ('function' == typeof utf8encode) {
+ callback = utf8encode;
+ utf8encode = null;
+ }
+
+ var data = (packet.data === undefined)
+ ? undefined
+ : packet.data.buffer || packet.data;
+
+ if (global.ArrayBuffer && data instanceof ArrayBuffer) {
+ return encodeArrayBuffer(packet, supportsBinary, callback);
+ } else if (Blob && data instanceof global.Blob) {
+ return encodeBlob(packet, supportsBinary, callback);
+ }
+
+ // might be an object with { base64: true, data: dataAsBase64String }
+ if (data && data.base64) {
+ return encodeBase64Object(packet, callback);
+ }
+
+ // Sending data as a utf-8 string
+ var encoded = packets[packet.type];
+
+ // data fragment is optional
+ if (undefined !== packet.data) {
+ encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);
+ }
+
+ return callback('' + encoded);
+
+};
+
+function encodeBase64Object(packet, callback) {
+ // packet data is an object { base64: true, data: dataAsBase64String }
+ var message = 'b' + exports.packets[packet.type] + packet.data.data;
+ return callback(message);
+}
+
+/**
+ * Encode packet helpers for binary types
+ */
+
+function encodeArrayBuffer(packet, supportsBinary, callback) {
+ if (!supportsBinary) {
+ return exports.encodeBase64Packet(packet, callback);
+ }
+
+ var data = packet.data;
+ var contentArray = new Uint8Array(data);
+ var resultBuffer = new Uint8Array(1 + data.byteLength);
+
+ resultBuffer[0] = packets[packet.type];
+ for (var i = 0; i < contentArray.length; i++) {
+ resultBuffer[i+1] = contentArray[i];
+ }
+
+ return callback(resultBuffer.buffer);
+}
+
+function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
+ if (!supportsBinary) {
+ return exports.encodeBase64Packet(packet, callback);
+ }
+
+ var fr = new FileReader();
+ fr.onload = function() {
+ packet.data = fr.result;
+ exports.encodePacket(packet, supportsBinary, true, callback);
+ };
+ return fr.readAsArrayBuffer(packet.data);
+}
+
+function encodeBlob(packet, supportsBinary, callback) {
+ if (!supportsBinary) {
+ return exports.encodeBase64Packet(packet, callback);
+ }
+
+ if (dontSendBlobs) {
+ return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
+ }
+
+ var length = new Uint8Array(1);
+ length[0] = packets[packet.type];
+ var blob = new Blob([length.buffer, packet.data]);
+
+ return callback(blob);
+}
+
+/**
+ * Encodes a packet with binary data in a base64 string
+ *
+ * @param {Object} packet, has `type` and `data`
+ * @return {String} base64 encoded message
+ */
+
+exports.encodeBase64Packet = function(packet, callback) {
+ var message = 'b' + exports.packets[packet.type];
+ if (Blob && packet.data instanceof Blob) {
+ var fr = new FileReader();
+ fr.onload = function() {
+ var b64 = fr.result.split(',')[1];
+ callback(message + b64);
+ };
+ return fr.readAsDataURL(packet.data);
+ }
+
+ var b64data;
+ try {
+ b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
+ } catch (e) {
+ // iPhone Safari doesn't let you apply with typed arrays
+ var typed = new Uint8Array(packet.data);
+ var basic = new Array(typed.length);
+ for (var i = 0; i < typed.length; i++) {
+ basic[i] = typed[i];
+ }
+ b64data = String.fromCharCode.apply(null, basic);
+ }
+ message += global.btoa(b64data);
+ return callback(message);
+};
+
+/**
+ * Decodes a packet. Changes format to Blob if requested.
+ *
+ * @return {Object} with `type` and `data` (if any)
+ * @api private
+ */
+
+exports.decodePacket = function (data, binaryType, utf8decode) {
+ // String data
+ if (typeof data == 'string' || data === undefined) {
+ if (data.charAt(0) == 'b') {
+ return exports.decodeBase64Packet(data.substr(1), binaryType);
+ }
+
+ if (utf8decode) {
+ try {
+ data = utf8.decode(data);
+ } catch (e) {
+ return err;
+ }
+ }
+ var type = data.charAt(0);
+
+ if (Number(type) != type || !packetslist[type]) {
+ return err;
+ }
+
+ if (data.length > 1) {
+ return { type: packetslist[type], data: data.substring(1) };
+ } else {
+ return { type: packetslist[type] };
+ }
+ }
+
+ var asArray = new Uint8Array(data);
+ var type = asArray[0];
+ var rest = sliceBuffer(data, 1);
+ if (Blob && binaryType === 'blob') {
+ rest = new Blob([rest]);
+ }
+ return { type: packetslist[type], data: rest };
+};
+
+/**
+ * Decodes a packet encoded in a base64 string
+ *
+ * @param {String} base64 encoded message
+ * @return {Object} with `type` and `data` (if any)
+ */
+
+exports.decodeBase64Packet = function(msg, binaryType) {
+ var type = packetslist[msg.charAt(0)];
+ if (!global.ArrayBuffer) {
+ return { type: type, data: { base64: true, data: msg.substr(1) } };
+ }
+
+ var data = base64encoder.decode(msg.substr(1));
+
+ if (binaryType === 'blob' && Blob) {
+ data = new Blob([data]);
+ }
+
+ return { type: type, data: data };
+};
+
+/**
+ * Encodes multiple messages (payload).
+ *
+ * <length>:data
+ *
+ * Example:
+ *
+ * 11:hello world2:hi
+ *
+ * If any contents are binary, they will be encoded as base64 strings. Base64
+ * encoded strings are marked with a b before the length specifier
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+exports.encodePayload = function (packets, supportsBinary, callback) {
+ if (typeof supportsBinary == 'function') {
+ callback = supportsBinary;
+ supportsBinary = null;
+ }
+
+ var isBinary = hasBinary(packets);
+
+ if (supportsBinary && isBinary) {
+ if (Blob && !dontSendBlobs) {
+ return exports.encodePayloadAsBlob(packets, callback);
+ }
+
+ return exports.encodePayloadAsArrayBuffer(packets, callback);
+ }
+
+ if (!packets.length) {
+ return callback('0:');
+ }
+
+ function setLengthHeader(message) {
+ return message.length + ':' + message;
+ }
+
+ function encodeOne(packet, doneCallback) {
+ exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {
+ doneCallback(null, setLengthHeader(message));
+ });
+ }
+
+ map(packets, encodeOne, function(err, results) {
+ return callback(results.join(''));
+ });
+};
+
+/**
+ * Async array map using after
+ */
+
+function map(ary, each, done) {
+ var result = new Array(ary.length);
+ var next = after(ary.length, done);
+
+ var eachWithIndex = function(i, el, cb) {
+ each(el, function(error, msg) {
+ result[i] = msg;
+ cb(error, result);
+ });
+ };
+
+ for (var i = 0; i < ary.length; i++) {
+ eachWithIndex(i, ary[i], next);
+ }
+}
+
+/*
+ * Decodes data when a payload is maybe expected. Possible binary contents are
+ * decoded from their base64 representation
+ *
+ * @param {String} data, callback method
+ * @api public
+ */
+
+exports.decodePayload = function (data, binaryType, callback) {
+ if (typeof data != 'string') {
+ return exports.decodePayloadAsBinary(data, binaryType, callback);
+ }
+
+ if (typeof binaryType === 'function') {
+ callback = binaryType;
+ binaryType = null;
+ }
+
+ var packet;
+ if (data == '') {
+ // parser error - ignoring payload
+ return callback(err, 0, 1);
+ }
+
+ var length = ''
+ , n, msg;
+
+ for (var i = 0, l = data.length; i < l; i++) {
+ var chr = data.charAt(i);
+
+ if (':' != chr) {
+ length += chr;
+ } else {
+ if ('' == length || (length != (n = Number(length)))) {
+ // parser error - ignoring payload
+ return callback(err, 0, 1);
+ }
+
+ msg = data.substr(i + 1, n);
+
+ if (length != msg.length) {
+ // parser error - ignoring payload
+ return callback(err, 0, 1);
+ }
+
+ if (msg.length) {
+ packet = exports.decodePacket(msg, binaryType, true);
+
+ if (err.type == packet.type && err.data == packet.data) {
+ // parser error in individual packet - ignoring payload
+ return callback(err, 0, 1);
+ }
+
+ var ret = callback(packet, i + n, l);
+ if (false === ret) return;
+ }
+
+ // advance cursor
+ i += n;
+ length = '';
+ }
+ }
+
+ if (length != '') {
+ // parser error - ignoring payload
+ return callback(err, 0, 1);
+ }
+
+};
+
+/**
+ * Encodes multiple messages (payload) as binary.
+ *
+ * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
+ * 255><data>
+ *
+ * Example:
+ * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
+ *
+ * @param {Array} packets
+ * @return {ArrayBuffer} encoded payload
+ * @api private
+ */
+
+exports.encodePayloadAsArrayBuffer = function(packets, callback) {
+ if (!packets.length) {
+ return callback(new ArrayBuffer(0));
+ }
+
+ function encodeOne(packet, doneCallback) {
+ exports.encodePacket(packet, true, true, function(data) {
+ return doneCallback(null, data);
+ });
+ }
+
+ map(packets, encodeOne, function(err, encodedPackets) {
+ var totalLength = encodedPackets.reduce(function(acc, p) {
+ var len;
+ if (typeof p === 'string'){
+ len = p.length;
+ } else {
+ len = p.byteLength;
+ }
+ return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
+ }, 0);
+
+ var resultArray = new Uint8Array(totalLength);
+
+ var bufferIndex = 0;
+ encodedPackets.forEach(function(p) {
+ var isString = typeof p === 'string';
+ var ab = p;
+ if (isString) {
+ var view = new Uint8Array(p.length);
+ for (var i = 0; i < p.length; i++) {
+ view[i] = p.charCodeAt(i);
+ }
+ ab = view.buffer;
+ }
+
+ if (isString) { // not true binary
+ resultArray[bufferIndex++] = 0;
+ } else { // true binary
+ resultArray[bufferIndex++] = 1;
+ }
+
+ var lenStr = ab.byteLength.toString();
+ for (var i = 0; i < lenStr.length; i++) {
+ resultArray[bufferIndex++] = parseInt(lenStr[i]);
+ }
+ resultArray[bufferIndex++] = 255;
+
+ var view = new Uint8Array(ab);
+ for (var i = 0; i < view.length; i++) {
+ resultArray[bufferIndex++] = view[i];
+ }
+ });
+
+ return callback(resultArray.buffer);
+ });
+};
+
+/**
+ * Encode as Blob
+ */
+
+exports.encodePayloadAsBlob = function(packets, callback) {
+ function encodeOne(packet, doneCallback) {
+ exports.encodePacket(packet, true, true, function(encoded) {
+ var binaryIdentifier = new Uint8Array(1);
+ binaryIdentifier[0] = 1;
+ if (typeof encoded === 'string') {
+ var view = new Uint8Array(encoded.length);
+ for (var i = 0; i < encoded.length; i++) {
+ view[i] = encoded.charCodeAt(i);
+ }
+ encoded = view.buffer;
+ binaryIdentifier[0] = 0;
+ }
+
+ var len = (encoded instanceof ArrayBuffer)
+ ? encoded.byteLength
+ : encoded.size;
+
+ var lenStr = len.toString();
+ var lengthAry = new Uint8Array(lenStr.length + 1);
+ for (var i = 0; i < lenStr.length; i++) {
+ lengthAry[i] = parseInt(lenStr[i]);
+ }
+ lengthAry[lenStr.length] = 255;
+
+ if (Blob) {
+ var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
+ doneCallback(null, blob);
+ }
+ });
+ }
+
+ map(packets, encodeOne, function(err, results) {
+ return callback(new Blob(results));
+ });
+};
+
+/*
+ * Decodes data when a payload is maybe expected. Strings are decoded by
+ * interpreting each byte as a key code for entries marked to start with 0. See
+ * description of encodePayloadAsBinary
+ *
+ * @param {ArrayBuffer} data, callback method
+ * @api public
+ */
+
+exports.decodePayloadAsBinary = function (data, binaryType, callback) {
+ if (typeof binaryType === 'function') {
+ callback = binaryType;
+ binaryType = null;
+ }
+
+ var bufferTail = data;
+ var buffers = [];
+
+ var numberTooLong = false;
+ while (bufferTail.byteLength > 0) {
+ var tailArray = new Uint8Array(bufferTail);
+ var isString = tailArray[0] === 0;
+ var msgLength = '';
+
+ for (var i = 1; ; i++) {
+ if (tailArray[i] == 255) break;
+
+ if (msgLength.length > 310) {
+ numberTooLong = true;
+ break;
+ }
+
+ msgLength += tailArray[i];
+ }
+
+ if(numberTooLong) return callback(err, 0, 1);
+
+ bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
+ msgLength = parseInt(msgLength);
+
+ var msg = sliceBuffer(bufferTail, 0, msgLength);
+ if (isString) {
+ try {
+ msg = String.fromCharCode.apply(null, new Uint8Array(msg));
+ } catch (e) {
+ // iPhone Safari doesn't let you apply to typed arrays
+ var typed = new Uint8Array(msg);
+ msg = '';
+ for (var i = 0; i < typed.length; i++) {
+ msg += String.fromCharCode(typed[i]);
+ }
+ }
+ }
+
+ buffers.push(msg);
+ bufferTail = sliceBuffer(bufferTail, msgLength);
+ }
+
+ var total = buffers.length;
+ buffers.forEach(function(buffer, i) {
+ callback(exports.decodePacket(buffer, binaryType, true), i, total);
+ });
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./keys":18,"after":19,"arraybuffer.slice":20,"base64-arraybuffer":21,"blob":11,"has-binary":22,"utf8":24}],18:[function(_dereq_,module,exports){
+
+/**
+ * Gets the keys for an object.
+ *
+ * @return {Array} keys
+ * @api private
+ */
+
+module.exports = Object.keys || function keys (obj){
+ var arr = [];
+ var has = Object.prototype.hasOwnProperty;
+
+ for (var i in obj) {
+ if (has.call(obj, i)) {
+ arr.push(i);
+ }
+ }
+ return arr;
+};
+
+},{}],19:[function(_dereq_,module,exports){
+module.exports = after
+
+function after(count, callback, err_cb) {
+ var bail = false
+ err_cb = err_cb || noop
+ proxy.count = count
+
+ return (count === 0) ? callback() : proxy
+
+ function proxy(err, result) {
+ if (proxy.count <= 0) {
+ throw new Error('after called too many times')
+ }
+ --proxy.count
+
+ // after first error, rest are passed to err_cb
+ if (err) {
+ bail = true
+ callback(err)
+ // future error callbacks will go to error handler
+ callback = err_cb
+ } else if (proxy.count === 0 && !bail) {
+ callback(null, result)
+ }
+ }
+}
+
+function noop() {}
+
+},{}],20:[function(_dereq_,module,exports){
+/**
+ * An abstraction for slicing an arraybuffer even when
+ * ArrayBuffer.prototype.slice is not supported
+ *
+ * @api public
+ */
+
+module.exports = function(arraybuffer, start, end) {
+ var bytes = arraybuffer.byteLength;
+ start = start || 0;
+ end = end || bytes;
+
+ if (arraybuffer.slice) { return arraybuffer.slice(start, end); }
+
+ if (start < 0) { start += bytes; }
+ if (end < 0) { end += bytes; }
+ if (end > bytes) { end = bytes; }
+
+ if (start >= bytes || start >= end || bytes === 0) {
+ return new ArrayBuffer(0);
+ }
+
+ var abv = new Uint8Array(arraybuffer);
+ var result = new Uint8Array(end - start);
+ for (var i = start, ii = 0; i < end; i++, ii++) {
+ result[ii] = abv[i];
+ }
+ return result.buffer;
+};
+
+},{}],21:[function(_dereq_,module,exports){
+/*
+ * base64-arraybuffer
+ * https://github.com/niklasvh/base64-arraybuffer
+ *
+ * Copyright (c) 2012 Niklas von Hertzen
+ * Licensed under the MIT license.
+ */
+(function(chars){
+ "use strict";
+
+ exports.encode = function(arraybuffer) {
+ var bytes = new Uint8Array(arraybuffer),
+ i, len = bytes.length, base64 = "";
+
+ for (i = 0; i < len; i+=3) {
+ base64 += chars[bytes[i] >> 2];
+ base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+ base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+ base64 += chars[bytes[i + 2] & 63];
+ }
+
+ if ((len % 3) === 2) {
+ base64 = base64.substring(0, base64.length - 1) + "=";
+ } else if (len % 3 === 1) {
+ base64 = base64.substring(0, base64.length - 2) + "==";
+ }
+
+ return base64;
+ };
+
+ exports.decode = function(base64) {
+ var bufferLength = base64.length * 0.75,
+ len = base64.length, i, p = 0,
+ encoded1, encoded2, encoded3, encoded4;
+
+ if (base64[base64.length - 1] === "=") {
+ bufferLength--;
+ if (base64[base64.length - 2] === "=") {
+ bufferLength--;
+ }
+ }
+
+ var arraybuffer = new ArrayBuffer(bufferLength),
+ bytes = new Uint8Array(arraybuffer);
+
+ for (i = 0; i < len; i+=4) {
+ encoded1 = chars.indexOf(base64[i]);
+ encoded2 = chars.indexOf(base64[i+1]);
+ encoded3 = chars.indexOf(base64[i+2]);
+ encoded4 = chars.indexOf(base64[i+3]);
+
+ bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+ bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+ bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+ }
+
+ return arraybuffer;
+ };
+})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
+
+},{}],22:[function(_dereq_,module,exports){
+(function (global){
+
+/*
+ * Module requirements.
+ */
+
+var isArray = _dereq_('isarray');
+
+/**
+ * Module exports.
+ */
+
+module.exports = hasBinary;
+
+/**
+ * Checks for binary data.
+ *
+ * Right now only Buffer and ArrayBuffer are supported..
+ *
+ * @param {Object} anything
+ * @api public
+ */
+
+function hasBinary(data) {
+
+ function _hasBinary(obj) {
+ if (!obj) return false;
+
+ if ( (global.Buffer && global.Buffer.isBuffer(obj)) ||
+ (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
+ (global.Blob && obj instanceof Blob) ||
+ (global.File && obj instanceof File)
+ ) {
+ return true;
+ }
+
+ if (isArray(obj)) {
+ for (var i = 0; i < obj.length; i++) {
+ if (_hasBinary(obj[i])) {
+ return true;
+ }
+ }
+ } else if (obj && 'object' == typeof obj) {
+ if (obj.toJSON) {
+ obj = obj.toJSON();
+ }
+
+ for (var key in obj) {
+ if (obj.hasOwnProperty(key) && _hasBinary(obj[key])) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+ }
+
+ return _hasBinary(data);
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"isarray":23}],23:[function(_dereq_,module,exports){
+module.exports = Array.isArray || function (arr) {
+ return Object.prototype.toString.call(arr) == '[object Array]';
+};
+
+},{}],24:[function(_dereq_,module,exports){
+(function (global){
+/*! http://mths.be/utf8js v2.0.0 by @mathias */
+;(function(root) {
+
+ // Detect free variables `exports`
+ var freeExports = typeof exports == 'object' && exports;
+
+ // Detect free variable `module`
+ var freeModule = typeof module == 'object' && module &&
+ module.exports == freeExports && module;
+
+ // Detect free variable `global`, from Node.js or Browserified code,
+ // and use it as `root`
+ var freeGlobal = typeof global == 'object' && global;
+ if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
+ root = freeGlobal;
+ }
+
+ /*--------------------------------------------------------------------------*/
+
+ var stringFromCharCode = String.fromCharCode;
+
+ // Taken from http://mths.be/punycode
+ function ucs2decode(string) {
+ var output = [];
+ var counter = 0;
+ var length = string.length;
+ var value;
+ var extra;
+ while (counter < length) {
+ value = string.charCodeAt(counter++);
+ if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
+ // high surrogate, and there is a next character
+ extra = string.charCodeAt(counter++);
+ if ((extra & 0xFC00) == 0xDC00) { // low surrogate
+ output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
+ } else {
+ // unmatched surrogate; only append this code unit, in case the next
+ // code unit is the high surrogate of a surrogate pair
+ output.push(value);
+ counter--;
+ }
+ } else {
+ output.push(value);
+ }
+ }
+ return output;
+ }
+
+ // Taken from http://mths.be/punycode
+ function ucs2encode(array) {
+ var length = array.length;
+ var index = -1;
+ var value;
+ var output = '';
+ while (++index < length) {
+ value = array[index];
+ if (value > 0xFFFF) {
+ value -= 0x10000;
+ output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
+ value = 0xDC00 | value & 0x3FF;
+ }
+ output += stringFromCharCode(value);
+ }
+ return output;
+ }
+
+ /*--------------------------------------------------------------------------*/
+
+ function createByte(codePoint, shift) {
+ return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
+ }
+
+ function encodeCodePoint(codePoint) {
+ if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
+ return stringFromCharCode(codePoint);
+ }
+ var symbol = '';
+ if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
+ symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
+ }
+ else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
+ symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
+ symbol += createByte(codePoint, 6);
+ }
+ else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
+ symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
+ symbol += createByte(codePoint, 12);
+ symbol += createByte(codePoint, 6);
+ }
+ symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
+ return symbol;
+ }
+
+ function utf8encode(string) {
+ var codePoints = ucs2decode(string);
+
+ // console.log(JSON.stringify(codePoints.map(function(x) {
+ // return 'U+' + x.toString(16).toUpperCase();
+ // })));
+
+ var length = codePoints.length;
+ var index = -1;
+ var codePoint;
+ var byteString = '';
+ while (++index < length) {
+ codePoint = codePoints[index];
+ byteString += encodeCodePoint(codePoint);
+ }
+ return byteString;
+ }
+
+ /*--------------------------------------------------------------------------*/
+
+ function readContinuationByte() {
+ if (byteIndex >= byteCount) {
+ throw Error('Invalid byte index');
+ }
+
+ var continuationByte = byteArray[byteIndex] & 0xFF;
+ byteIndex++;
+
+ if ((continuationByte & 0xC0) == 0x80) {
+ return continuationByte & 0x3F;
+ }
+
+ // If we end up here, it’s not a continuation byte
+ throw Error('Invalid continuation byte');
+ }
+
+ function decodeSymbol() {
+ var byte1;
+ var byte2;
+ var byte3;
+ var byte4;
+ var codePoint;
+
+ if (byteIndex > byteCount) {
+ throw Error('Invalid byte index');
+ }
+
+ if (byteIndex == byteCount) {
+ return false;
+ }
+
+ // Read first byte
+ byte1 = byteArray[byteIndex] & 0xFF;
+ byteIndex++;
+
+ // 1-byte sequence (no continuation bytes)
+ if ((byte1 & 0x80) == 0) {
+ return byte1;
+ }
+
+ // 2-byte sequence
+ if ((byte1 & 0xE0) == 0xC0) {
+ var byte2 = readContinuationByte();
+ codePoint = ((byte1 & 0x1F) << 6) | byte2;
+ if (codePoint >= 0x80) {
+ return codePoint;
+ } else {
+ throw Error('Invalid continuation byte');
+ }
+ }
+
+ // 3-byte sequence (may include unpaired surrogates)
+ if ((byte1 & 0xF0) == 0xE0) {
+ byte2 = readContinuationByte();
+ byte3 = readContinuationByte();
+ codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
+ if (codePoint >= 0x0800) {
+ return codePoint;
+ } else {
+ throw Error('Invalid continuation byte');
+ }
+ }
+
+ // 4-byte sequence
+ if ((byte1 & 0xF8) == 0xF0) {
+ byte2 = readContinuationByte();
+ byte3 = readContinuationByte();
+ byte4 = readContinuationByte();
+ codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
+ (byte3 << 0x06) | byte4;
+ if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
+ return codePoint;
+ }
+ }
+
+ throw Error('Invalid UTF-8 detected');
+ }
+
+ var byteArray;
+ var byteCount;
+ var byteIndex;
+ function utf8decode(byteString) {
+ byteArray = ucs2decode(byteString);
+ byteCount = byteArray.length;
+ byteIndex = 0;
+ var codePoints = [];
+ var tmp;
+ while ((tmp = decodeSymbol()) !== false) {
+ codePoints.push(tmp);
+ }
+ return ucs2encode(codePoints);
+ }
+
+ /*--------------------------------------------------------------------------*/
+
+ var utf8 = {
+ 'version': '2.0.0',
+ 'encode': utf8encode,
+ 'decode': utf8decode
+ };
+
+ // Some AMD build optimizers, like r.js, check for specific condition patterns
+ // like the following:
+ if (
+ typeof define == 'function' &&
+ typeof define.amd == 'object' &&
+ define.amd
+ ) {
+ define(function() {
+ return utf8;
+ });
+ } else if (freeExports && !freeExports.nodeType) {
+ if (freeModule) { // in Node.js or RingoJS v0.8.0+
+ freeModule.exports = utf8;
+ } else { // in Narwhal or RingoJS v0.7.0-
+ var object = {};
+ var hasOwnProperty = object.hasOwnProperty;
+ for (var key in utf8) {
+ hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);
+ }
+ }
+ } else { // in Rhino or a web browser
+ root.utf8 = utf8;
+ }
+
+}(this));
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],25:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var global = _dereq_('global');
+
+/**
+ * Module exports.
+ *
+ * Logic borrowed from Modernizr:
+ *
+ * - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
+ */
+
+try {
+ module.exports = 'XMLHttpRequest' in global &&
+ 'withCredentials' in new global.XMLHttpRequest();
+} catch (err) {
+ // if XMLHttp support is disabled in IE then it will throw
+ // when trying to create
+ module.exports = false;
+}
+
+},{"global":26}],26:[function(_dereq_,module,exports){
+
+/**
+ * Returns `this`. Execute this without a "context" (i.e. without it being
+ * attached to an object of the left-hand side), and `this` points to the
+ * "global" scope of the current JS execution.
+ */
+
+module.exports = (function () { return this; })();
+
+},{}],27:[function(_dereq_,module,exports){
+
+var indexOf = [].indexOf;
+
+module.exports = function(arr, obj){
+ if (indexOf) return arr.indexOf(obj);
+ for (var i = 0; i < arr.length; ++i) {
+ if (arr[i] === obj) return i;
+ }
+ return -1;
+};
+},{}],28:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * JSON parse.
+ *
+ * @see Based on jQuery#parseJSON (MIT) and JSON2
+ * @api private
+ */
+
+var rvalidchars = /^[\],:{}\s]*$/;
+var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
+var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
+var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
+var rtrimLeft = /^\s+/;
+var rtrimRight = /\s+$/;
+
+module.exports = function parsejson(data) {
+ if ('string' != typeof data || !data) {
+ return null;
+ }
+
+ data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
+
+ // Attempt to parse using the native JSON parser first
+ if (global.JSON && JSON.parse) {
+ return JSON.parse(data);
+ }
+
+ if (rvalidchars.test(data.replace(rvalidescape, '@')
+ .replace(rvalidtokens, ']')
+ .replace(rvalidbraces, ''))) {
+ return (new Function('return ' + data))();
+ }
+};
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],29:[function(_dereq_,module,exports){
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+
+exports.encode = function (obj) {
+ var str = '';
+
+ for (var i in obj) {
+ if (obj.hasOwnProperty(i)) {
+ if (str.length) str += '&';
+ str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+ }
+ }
+
+ return str;
+};
+
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+
+exports.decode = function(qs){
+ var qry = {};
+ var pairs = qs.split('&');
+ for (var i = 0, l = pairs.length; i < l; i++) {
+ var pair = pairs[i].split('=');
+ qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+ }
+ return qry;
+};
+
+},{}],30:[function(_dereq_,module,exports){
+/**
+ * Parses an URI
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+
+var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+
+var parts = [
+ 'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+
+module.exports = function parseuri(str) {
+ var src = str,
+ b = str.indexOf('['),
+ e = str.indexOf(']');
+
+ if (b != -1 && e != -1) {
+ str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+ }
+
+ var m = re.exec(str || ''),
+ uri = {},
+ i = 14;
+
+ while (i--) {
+ uri[parts[i]] = m[i] || '';
+ }
+
+ if (b != -1 && e != -1) {
+ uri.source = src;
+ uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+ uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+ uri.ipv6uri = true;
+ }
+
+ return uri;
+};
+
+},{}],31:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var global = (function() { return this; })();
+
+/**
+ * WebSocket constructor.
+ */
+
+var WebSocket = global.WebSocket || global.MozWebSocket;
+
+/**
+ * Module exports.
+ */
+
+module.exports = WebSocket ? ws : null;
+
+/**
+ * WebSocket constructor.
+ *
+ * The third `opts` options object gets ignored in web browsers, since it's
+ * non-standard, and throws a TypeError if passed to the constructor.
+ * See: https://github.com/einaros/ws/issues/227
+ *
+ * @param {String} uri
+ * @param {Array} protocols (optional)
+ * @param {Object) opts (optional)
+ * @api public
+ */
+
+function ws(uri, protocols, opts) {
+ var instance;
+ if (protocols) {
+ instance = new WebSocket(uri, protocols);
+ } else {
+ instance = new WebSocket(uri);
+ }
+ return instance;
+}
+
+if (WebSocket) ws.prototype = WebSocket.prototype;
+
+},{}]},{},[1])(1)
+});
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..e72ecd6
--- /dev/null
+++ b/index.js
@@ -0,0 +1,2 @@
+
+module.exports = require('./lib/');
diff --git a/lib/index.js b/lib/index.js
new file mode 100644
index 0000000..0bf4058
--- /dev/null
+++ b/lib/index.js
@@ -0,0 +1,10 @@
+
+module.exports = require('./socket');
+
+/**
+ * Exports parser
+ *
+ * @api public
+ *
+ */
+module.exports.parser = require('engine.io-parser');
diff --git a/lib/socket.js b/lib/socket.js
new file mode 100644
index 0000000..f414b04
--- /dev/null
+++ b/lib/socket.js
@@ -0,0 +1,705 @@
+/**
+ * Module dependencies.
+ */
+
+var transports = require('./transports');
+var Emitter = require('component-emitter');
+var debug = require('debug')('engine.io-client:socket');
+var index = require('indexof');
+var parser = require('engine.io-parser');
+var parseuri = require('parseuri');
+var parsejson = require('parsejson');
+var parseqs = require('parseqs');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Socket;
+
+/**
+ * Noop function.
+ *
+ * @api private
+ */
+
+function noop(){}
+
+/**
+ * Socket constructor.
+ *
+ * @param {String|Object} uri or options
+ * @param {Object} options
+ * @api public
+ */
+
+function Socket(uri, opts){
+ if (!(this instanceof Socket)) return new Socket(uri, opts);
+
+ opts = opts || {};
+
+ if (uri && 'object' == typeof uri) {
+ opts = uri;
+ uri = null;
+ }
+
+ if (uri) {
+ uri = parseuri(uri);
+ opts.host = uri.host;
+ opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
+ opts.port = uri.port;
+ if (uri.query) opts.query = uri.query;
+ }
+
+ this.secure = null != opts.secure ? opts.secure :
+ (global.location && 'https:' == location.protocol);
+
+ if (opts.host) {
+ var pieces = opts.host.split(':');
+ opts.hostname = pieces.shift();
+ if (pieces.length) {
+ opts.port = pieces.pop();
+ } else if (!opts.port) {
+ // if no port is specified manually, use the protocol default
+ opts.port = this.secure ? '443' : '80';
+ }
+ }
+
+ this.agent = opts.agent || false;
+ this.hostname = opts.hostname ||
+ (global.location ? location.hostname : 'localhost');
+ this.port = opts.port || (global.location && location.port ?
+ location.port :
+ (this.secure ? 443 : 80));
+ this.query = opts.query || {};
+ if ('string' == typeof this.query) this.query = parseqs.decode(this.query);
+ this.upgrade = false !== opts.upgrade;
+ this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
+ this.forceJSONP = !!opts.forceJSONP;
+ this.jsonp = false !== opts.jsonp;
+ this.forceBase64 = !!opts.forceBase64;
+ this.enablesXDR = !!opts.enablesXDR;
+ this.timestampParam = opts.timestampParam || 't';
+ this.timestampRequests = opts.timestampRequests;
+ this.transports = opts.transports || ['polling', 'websocket'];
+ this.readyState = '';
+ this.writeBuffer = [];
+ this.callbackBuffer = [];
+ this.policyPort = opts.policyPort || 843;
+ this.rememberUpgrade = opts.rememberUpgrade || false;
+ this.binaryType = null;
+ this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx || null;
+ this.key = opts.key || null;
+ this.passphrase = opts.passphrase || null;
+ this.cert = opts.cert || null;
+ this.ca = opts.ca || null;
+ this.ciphers = opts.ciphers || null;
+ this.rejectUnauthorized = opts.rejectUnauthorized || null;
+
+ this.open();
+}
+
+Socket.priorWebsocketSuccess = false;
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+Socket.Socket = Socket;
+Socket.Transport = require('./transport');
+Socket.transports = require('./transports');
+Socket.parser = require('engine.io-parser');
+
+/**
+ * Creates transport of the given type.
+ *
+ * @param {String} transport name
+ * @return {Transport}
+ * @api private
+ */
+
+Socket.prototype.createTransport = function (name) {
+ debug('creating transport "%s"', name);
+ var query = clone(this.query);
+
+ // append engine.io protocol identifier
+ query.EIO = parser.protocol;
+
+ // transport name
+ query.transport = name;
+
+ // session id if we already have one
+ if (this.id) query.sid = this.id;
+
+ var transport = new transports[name]({
+ agent: this.agent,
+ hostname: this.hostname,
+ port: this.port,
+ secure: this.secure,
+ path: this.path,
+ query: query,
+ forceJSONP: this.forceJSONP,
+ jsonp: this.jsonp,
+ forceBase64: this.forceBase64,
+ enablesXDR: this.enablesXDR,
+ timestampRequests: this.timestampRequests,
+ timestampParam: this.timestampParam,
+ policyPort: this.policyPort,
+ socket: this,
+ pfx: this.pfx,
+ key: this.key,
+ passphrase: this.passphrase,
+ cert: this.cert,
+ ca: this.ca,
+ ciphers: this.ciphers,
+ rejectUnauthorized: this.rejectUnauthorized
+ });
+
+ return transport;
+};
+
+function clone (obj) {
+ var o = {};
+ for (var i in obj) {
+ if (obj.hasOwnProperty(i)) {
+ o[i] = obj[i];
+ }
+ }
+ return o;
+}
+
+/**
+ * Initializes transport to use and starts probe.
+ *
+ * @api private
+ */
+Socket.prototype.open = function () {
+ var transport;
+ if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {
+ transport = 'websocket';
+ } else if (0 == this.transports.length) {
+ // Emit error on next tick so it can be listened to
+ var self = this;
+ setTimeout(function() {
+ self.emit('error', 'No transports available');
+ }, 0);
+ return;
+ } else {
+ transport = this.transports[0];
+ }
+ this.readyState = 'opening';
+
+ // Retry with the next transport if the transport is disabled (jsonp: false)
+ var transport;
+ try {
+ transport = this.createTransport(transport);
+ } catch (e) {
+ this.transports.shift();
+ this.open();
+ return;
+ }
+
+ transport.open();
+ this.setTransport(transport);
+};
+
+/**
+ * Sets the current transport. Disables the existing one (if any).
+ *
+ * @api private
+ */
+
+Socket.prototype.setTransport = function(transport){
+ debug('setting transport %s', transport.name);
+ var self = this;
+
+ if (this.transport) {
+ debug('clearing existing transport %s', this.transport.name);
+ this.transport.removeAllListeners();
+ }
+
+ // set up transport
+ this.transport = transport;
+
+ // set up transport listeners
+ transport
+ .on('drain', function(){
+ self.onDrain();
+ })
+ .on('packet', function(packet){
+ self.onPacket(packet);
+ })
+ .on('error', function(e){
+ self.onError(e);
+ })
+ .on('close', function(){
+ self.onClose('transport close');
+ });
+};
+
+/**
+ * Probes a transport.
+ *
+ * @param {String} transport name
+ * @api private
+ */
+
+Socket.prototype.probe = function (name) {
+ debug('probing transport "%s"', name);
+ var transport = this.createTransport(name, { probe: 1 })
+ , failed = false
+ , self = this;
+
+ Socket.priorWebsocketSuccess = false;
+
+ function onTransportOpen(){
+ if (self.onlyBinaryUpgrades) {
+ var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
+ failed = failed || upgradeLosesBinary;
+ }
+ if (failed) return;
+
+ debug('probe transport "%s" opened', name);
+ transport.send([{ type: 'ping', data: 'probe' }]);
+ transport.once('packet', function (msg) {
+ if (failed) return;
+ if ('pong' == msg.type && 'probe' == msg.data) {
+ debug('probe transport "%s" pong', name);
+ self.upgrading = true;
+ self.emit('upgrading', transport);
+ if (!transport) return;
+ Socket.priorWebsocketSuccess = 'websocket' == transport.name;
+
+ debug('pausing current transport "%s"', self.transport.name);
+ self.transport.pause(function () {
+ if (failed) return;
+ if ('closed' == self.readyState) return;
+ debug('changing transport and sending upgrade packet');
+
+ cleanup();
+
+ self.setTransport(transport);
+ transport.send([{ type: 'upgrade' }]);
+ self.emit('upgrade', transport);
+ transport = null;
+ self.upgrading = false;
+ self.flush();
+ });
+ } else {
+ debug('probe transport "%s" failed', name);
+ var err = new Error('probe error');
+ err.transport = transport.name;
+ self.emit('upgradeError', err);
+ }
+ });
+ }
+
+ function freezeTransport() {
+ if (failed) return;
+
+ // Any callback called by transport should be ignored since now
+ failed = true;
+
+ cleanup();
+
+ transport.close();
+ transport = null;
+ }
+
+ //Handle any error that happens while probing
+ function onerror(err) {
+ var error = new Error('probe error: ' + err);
+ error.transport = transport.name;
+
+ freezeTransport();
+
+ debug('probe transport "%s" failed because of error: %s', name, err);
+
+ self.emit('upgradeError', error);
+ }
+
+ function onTransportClose(){
+ onerror("transport closed");
+ }
+
+ //When the socket is closed while we're probing
+ function onclose(){
+ onerror("socket closed");
+ }
+
+ //When the socket is upgraded while we're probing
+ function onupgrade(to){
+ if (transport && to.name != transport.name) {
+ debug('"%s" works - aborting "%s"', to.name, transport.name);
+ freezeTransport();
+ }
+ }
+
+ //Remove all listeners on the transport and on self
+ function cleanup(){
+ transport.removeListener('open', onTransportOpen);
+ transport.removeListener('error', onerror);
+ transport.removeListener('close', onTransportClose);
+ self.removeListener('close', onclose);
+ self.removeListener('upgrading', onupgrade);
+ }
+
+ transport.once('open', onTransportOpen);
+ transport.once('error', onerror);
+ transport.once('close', onTransportClose);
+
+ this.once('close', onclose);
+ this.once('upgrading', onupgrade);
+
+ transport.open();
+
+};
+
+/**
+ * Called when connection is deemed open.
+ *
+ * @api public
+ */
+
+Socket.prototype.onOpen = function () {
+ debug('socket open');
+ this.readyState = 'open';
+ Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
+ this.emit('open');
+ this.flush();
+
+ // we check for `readyState` in case an `open`
+ // listener already closed the socket
+ if ('open' == this.readyState && this.upgrade && this.transport.pause) {
+ debug('starting upgrade probes');
+ for (var i = 0, l = this.upgrades.length; i < l; i++) {
+ this.probe(this.upgrades[i]);
+ }
+ }
+};
+
+/**
+ * Handles a packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.onPacket = function (packet) {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+
+ this.emit('packet', packet);
+
+ // Socket is live - any packet counts
+ this.emit('heartbeat');
+
+ switch (packet.type) {
+ case 'open':
+ this.onHandshake(parsejson(packet.data));
+ break;
+
+ case 'pong':
+ this.setPing();
+ break;
+
+ case 'error':
+ var err = new Error('server error');
+ err.code = packet.data;
+ this.emit('error', err);
+ break;
+
+ case 'message':
+ this.emit('data', packet.data);
+ this.emit('message', packet.data);
+ break;
+ }
+ } else {
+ debug('packet received with socket readyState "%s"', this.readyState);
+ }
+};
+
+/**
+ * Called upon handshake completion.
+ *
+ * @param {Object} handshake obj
+ * @api private
+ */
+
+Socket.prototype.onHandshake = function (data) {
+ this.emit('handshake', data);
+ this.id = data.sid;
+ this.transport.query.sid = data.sid;
+ this.upgrades = this.filterUpgrades(data.upgrades);
+ this.pingInterval = data.pingInterval;
+ this.pingTimeout = data.pingTimeout;
+ this.onOpen();
+ // In case open handler closes socket
+ if ('closed' == this.readyState) return;
+ this.setPing();
+
+ // Prolong liveness of socket on heartbeat
+ this.removeListener('heartbeat', this.onHeartbeat);
+ this.on('heartbeat', this.onHeartbeat);
+};
+
+/**
+ * Resets ping timeout.
+ *
+ * @api private
+ */
+
+Socket.prototype.onHeartbeat = function (timeout) {
+ clearTimeout(this.pingTimeoutTimer);
+ var self = this;
+ self.pingTimeoutTimer = setTimeout(function () {
+ if ('closed' == self.readyState) return;
+ self.onClose('ping timeout');
+ }, timeout || (self.pingInterval + self.pingTimeout));
+};
+
+/**
+ * Pings server every `this.pingInterval` and expects response
+ * within `this.pingTimeout` or closes connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.setPing = function () {
+ var self = this;
+ clearTimeout(self.pingIntervalTimer);
+ self.pingIntervalTimer = setTimeout(function () {
+ debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
+ self.ping();
+ self.onHeartbeat(self.pingTimeout);
+ }, self.pingInterval);
+};
+
+/**
+* Sends a ping packet.
+*
+* @api public
+*/
+
+Socket.prototype.ping = function () {
+ this.sendPacket('ping');
+};
+
+/**
+ * Called on `drain` event
+ *
+ * @api private
+ */
+
+Socket.prototype.onDrain = function() {
+ for (var i = 0; i < this.prevBufferLen; i++) {
+ if (this.callbackBuffer[i]) {
+ this.callbackBuffer[i]();
+ }
+ }
+
+ this.writeBuffer.splice(0, this.prevBufferLen);
+ this.callbackBuffer.splice(0, this.prevBufferLen);
+
+ // setting prevBufferLen = 0 is very important
+ // for example, when upgrading, upgrade packet is sent over,
+ // and a nonzero prevBufferLen could cause problems on `drain`
+ this.prevBufferLen = 0;
+
+ if (this.writeBuffer.length == 0) {
+ this.emit('drain');
+ } else {
+ this.flush();
+ }
+};
+
+/**
+ * Flush write buffers.
+ *
+ * @api private
+ */
+
+Socket.prototype.flush = function () {
+ if ('closed' != this.readyState && this.transport.writable &&
+ !this.upgrading && this.writeBuffer.length) {
+ debug('flushing %d packets in socket', this.writeBuffer.length);
+ this.transport.send(this.writeBuffer);
+ // keep track of current length of writeBuffer
+ // splice writeBuffer and callbackBuffer on `drain`
+ this.prevBufferLen = this.writeBuffer.length;
+ this.emit('flush');
+ }
+};
+
+/**
+ * Sends a message.
+ *
+ * @param {String} message.
+ * @param {Function} callback function.
+ * @return {Socket} for chaining.
+ * @api public
+ */
+
+Socket.prototype.write =
+Socket.prototype.send = function (msg, fn) {
+ this.sendPacket('message', msg, fn);
+ return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {String} packet type.
+ * @param {String} data.
+ * @param {Function} callback function.
+ * @api private
+ */
+
+Socket.prototype.sendPacket = function (type, data, fn) {
+ if ('closing' == this.readyState || 'closed' == this.readyState) {
+ return;
+ }
+
+ var packet = { type: type, data: data };
+ this.emit('packetCreate', packet);
+ this.writeBuffer.push(packet);
+ this.callbackBuffer.push(fn);
+ this.flush();
+};
+
+/**
+ * Closes the connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.close = function () {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ this.readyState = 'closing';
+
+ var self = this;
+
+ function close() {
+ self.onClose('forced close');
+ debug('socket closing - telling transport to close');
+ self.transport.close();
+ }
+
+ function cleanupAndClose() {
+ self.removeListener('upgrade', cleanupAndClose);
+ self.removeListener('upgradeError', cleanupAndClose);
+ close();
+ }
+
+ function waitForUpgrade() {
+ // wait for upgrade to finish since we can't send packets while pausing a transport
+ self.once('upgrade', cleanupAndClose);
+ self.once('upgradeError', cleanupAndClose);
+ }
+
+ if (this.writeBuffer.length) {
+ this.once('drain', function() {
+ if (this.upgrading) {
+ waitForUpgrade();
+ } else {
+ close();
+ }
+ });
+ } else if (this.upgrading) {
+ waitForUpgrade();
+ } else {
+ close();
+ }
+ }
+
+ return this;
+};
+
+/**
+ * Called upon transport error
+ *
+ * @api private
+ */
+
+Socket.prototype.onError = function (err) {
+ debug('socket error %j', err);
+ Socket.priorWebsocketSuccess = false;
+ this.emit('error', err);
+ this.onClose('transport error', err);
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @api private
+ */
+
+Socket.prototype.onClose = function (reason, desc) {
+ if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {
+ debug('socket close with reason: "%s"', reason);
+ var self = this;
+
+ // clear timers
+ clearTimeout(this.pingIntervalTimer);
+ clearTimeout(this.pingTimeoutTimer);
+
+ // clean buffers in next tick, so developers can still
+ // grab the buffers on `close` event
+ setTimeout(function() {
+ self.writeBuffer = [];
+ self.callbackBuffer = [];
+ self.prevBufferLen = 0;
+ }, 0);
+
+ // stop event from firing again for transport
+ this.transport.removeAllListeners('close');
+
+ // ensure transport won't stay open
+ this.transport.close();
+
+ // ignore further transport communication
+ this.transport.removeAllListeners();
+
+ // set ready state
+ this.readyState = 'closed';
+
+ // clear session id
+ this.id = null;
+
+ // emit close event
+ this.emit('close', reason, desc);
+ }
+};
+
+/**
+ * Filters upgrades, returning only those matching client transports.
+ *
+ * @param {Array} server upgrades
+ * @api private
+ *
+ */
+
+Socket.prototype.filterUpgrades = function (upgrades) {
+ var filteredUpgrades = [];
+ for (var i = 0, j = upgrades.length; i<j; i++) {
+ if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
+ }
+ return filteredUpgrades;
+};
diff --git a/lib/transport.js b/lib/transport.js
new file mode 100644
index 0000000..3a544b3
--- /dev/null
+++ b/lib/transport.js
@@ -0,0 +1,159 @@
+/**
+ * Module dependencies.
+ */
+
+var parser = require('engine.io-parser');
+var Emitter = require('component-emitter');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Transport;
+
+/**
+ * Transport abstract constructor.
+ *
+ * @param {Object} options.
+ * @api private
+ */
+
+function Transport (opts) {
+ this.path = opts.path;
+ this.hostname = opts.hostname;
+ this.port = opts.port;
+ this.secure = opts.secure;
+ this.query = opts.query;
+ this.timestampParam = opts.timestampParam;
+ this.timestampRequests = opts.timestampRequests;
+ this.readyState = '';
+ this.agent = opts.agent || false;
+ this.socket = opts.socket;
+ this.enablesXDR = opts.enablesXDR;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx;
+ this.key = opts.key;
+ this.passphrase = opts.passphrase;
+ this.cert = opts.cert;
+ this.ca = opts.ca;
+ this.ciphers = opts.ciphers;
+ this.rejectUnauthorized = opts.rejectUnauthorized;
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Transport.prototype);
+
+/**
+ * A counter used to prevent collisions in the timestamps used
+ * for cache busting.
+ */
+
+Transport.timestamps = 0;
+
+/**
+ * Emits an error.
+ *
+ * @param {String} str
+ * @return {Transport} for chaining
+ * @api public
+ */
+
+Transport.prototype.onError = function (msg, desc) {
+ var err = new Error(msg);
+ err.type = 'TransportError';
+ err.description = desc;
+ this.emit('error', err);
+ return this;
+};
+
+/**
+ * Opens the transport.
+ *
+ * @api public
+ */
+
+Transport.prototype.open = function () {
+ if ('closed' == this.readyState || '' == this.readyState) {
+ this.readyState = 'opening';
+ this.doOpen();
+ }
+
+ return this;
+};
+
+/**
+ * Closes the transport.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function () {
+ if ('opening' == this.readyState || 'open' == this.readyState) {
+ this.doClose();
+ this.onClose();
+ }
+
+ return this;
+};
+
+/**
+ * Sends multiple packets.
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+Transport.prototype.send = function(packets){
+ if ('open' == this.readyState) {
+ this.write(packets);
+ } else {
+ throw new Error('Transport not open');
+ }
+};
+
+/**
+ * Called upon open
+ *
+ * @api private
+ */
+
+Transport.prototype.onOpen = function () {
+ this.readyState = 'open';
+ this.writable = true;
+ this.emit('open');
+};
+
+/**
+ * Called with data.
+ *
+ * @param {String} data
+ * @api private
+ */
+
+Transport.prototype.onData = function(data){
+ var packet = parser.decodePacket(data, this.socket.binaryType);
+ this.onPacket(packet);
+};
+
+/**
+ * Called with a decoded packet.
+ */
+
+Transport.prototype.onPacket = function (packet) {
+ this.emit('packet', packet);
+};
+
+/**
+ * Called upon close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+ this.readyState = 'closed';
+ this.emit('close');
+};
diff --git a/lib/transports/index.js b/lib/transports/index.js
new file mode 100755
index 0000000..354f575
--- /dev/null
+++ b/lib/transports/index.js
@@ -0,0 +1,53 @@
+/**
+ * Module dependencies
+ */
+
+var XMLHttpRequest = require('xmlhttprequest');
+var XHR = require('./polling-xhr');
+var JSONP = require('./polling-jsonp');
+var websocket = require('./websocket');
+
+/**
+ * Export transports.
+ */
+
+exports.polling = polling;
+exports.websocket = websocket;
+
+/**
+ * Polling transport polymorphic constructor.
+ * Decides on xhr vs jsonp based on feature detection.
+ *
+ * @api private
+ */
+
+function polling(opts){
+ var xhr;
+ var xd = false;
+ var xs = false;
+ var jsonp = false !== opts.jsonp;
+
+ if (global.location) {
+ var isSSL = 'https:' == location.protocol;
+ var port = location.port;
+
+ // some user agents have empty `location.port`
+ if (!port) {
+ port = isSSL ? 443 : 80;
+ }
+
+ xd = opts.hostname != location.hostname || port != opts.port;
+ xs = opts.secure != isSSL;
+ }
+
+ opts.xdomain = xd;
+ opts.xscheme = xs;
+ xhr = new XMLHttpRequest(opts);
+
+ if ('open' in xhr && !opts.forceJSONP) {
+ return new XHR(opts);
+ } else {
+ if (!jsonp) throw new Error('JSONP disabled');
+ return new JSONP(opts);
+ }
+}
diff --git a/lib/transports/polling-jsonp.js b/lib/transports/polling-jsonp.js
new file mode 100644
index 0000000..fdc57b9
--- /dev/null
+++ b/lib/transports/polling-jsonp.js
@@ -0,0 +1,233 @@
+
+/**
+ * Module requirements.
+ */
+
+var Polling = require('./polling');
+var inherit = require('component-inherit');
+
+/**
+ * Module exports.
+ */
+
+module.exports = JSONPPolling;
+
+/**
+ * Cached regular expressions.
+ */
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+/**
+ * Callbacks count.
+ */
+
+var index = 0;
+
+/**
+ * Noop.
+ */
+
+function empty () { }
+
+/**
+ * JSONP Polling constructor.
+ *
+ * @param {Object} opts.
+ * @api public
+ */
+
+function JSONPPolling (opts) {
+ Polling.call(this, opts);
+
+ this.query = this.query || {};
+
+ // define global callbacks array if not present
+ // we do this here (lazily) to avoid unneeded global pollution
+ if (!callbacks) {
+ // we need to consider multiple engines in the same page
+ if (!global.___eio) global.___eio = [];
+ callbacks = global.___eio;
+ }
+
+ // callback identifier
+ this.index = callbacks.length;
+
+ // add callback to jsonp global
+ var self = this;
+ callbacks.push(function (msg) {
+ self.onData(msg);
+ });
+
+ // append to query string
+ this.query.j = this.index;
+
+ // prevent spurious errors from being emitted when the window is unloaded
+ if (global.document && global.addEventListener) {
+ global.addEventListener('beforeunload', function () {
+ if (self.script) self.script.onerror = empty;
+ }, false);
+ }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(JSONPPolling, Polling);
+
+/*
+ * JSONP only supports binary as base64 encoded strings
+ */
+
+JSONPPolling.prototype.supportsBinary = false;
+
+/**
+ * Closes the socket.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doClose = function () {
+ if (this.script) {
+ this.script.parentNode.removeChild(this.script);
+ this.script = null;
+ }
+
+ if (this.form) {
+ this.form.parentNode.removeChild(this.form);
+ this.form = null;
+ this.iframe = null;
+ }
+
+ Polling.prototype.doClose.call(this);
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doPoll = function () {
+ var self = this;
+ var script = document.createElement('script');
+
+ if (this.script) {
+ this.script.parentNode.removeChild(this.script);
+ this.script = null;
+ }
+
+ script.async = true;
+ script.src = this.uri();
+ script.onerror = function(e){
+ self.onError('jsonp poll error',e);
+ };
+
+ var insertAt = document.getElementsByTagName('script')[0];
+ insertAt.parentNode.insertBefore(script, insertAt);
+ this.script = script;
+
+ var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);
+
+ if (isUAgecko) {
+ setTimeout(function () {
+ var iframe = document.createElement('iframe');
+ document.body.appendChild(iframe);
+ document.body.removeChild(iframe);
+ }, 100);
+ }
+};
+
+/**
+ * Writes with a hidden iframe.
+ *
+ * @param {String} data to send
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+JSONPPolling.prototype.doWrite = function (data, fn) {
+ var self = this;
+
+ if (!this.form) {
+ var form = document.createElement('form');
+ var area = document.createElement('textarea');
+ var id = this.iframeId = 'eio_iframe_' + this.index;
+ var iframe;
+
+ form.className = 'socketio';
+ form.style.position = 'absolute';
+ form.style.top = '-1000px';
+ form.style.left = '-1000px';
+ form.target = id;
+ form.method = 'POST';
+ form.setAttribute('accept-charset', 'utf-8');
+ area.name = 'd';
+ form.appendChild(area);
+ document.body.appendChild(form);
+
+ this.form = form;
+ this.area = area;
+ }
+
+ this.form.action = this.uri();
+
+ function complete () {
+ initIframe();
+ fn();
+ }
+
+ function initIframe () {
+ if (self.iframe) {
+ try {
+ self.form.removeChild(self.iframe);
+ } catch (e) {
+ self.onError('jsonp polling iframe removal error', e);
+ }
+ }
+
+ try {
+ // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+ var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
+ iframe = document.createElement(html);
+ } catch (e) {
+ iframe = document.createElement('iframe');
+ iframe.name = self.iframeId;
+ iframe.src = 'javascript:0';
+ }
+
+ iframe.id = self.iframeId;
+
+ self.form.appendChild(iframe);
+ self.iframe = iframe;
+ }
+
+ initIframe();
+
+ // escape \n to prevent it from being converted into \r\n by some UAs
+ // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
+ data = data.replace(rEscapedNewline, '\\\n');
+ this.area.value = data.replace(rNewline, '\\n');
+
+ try {
+ this.form.submit();
+ } catch(e) {}
+
+ if (this.iframe.attachEvent) {
+ this.iframe.onreadystatechange = function(){
+ if (self.iframe.readyState == 'complete') {
+ complete();
+ }
+ };
+ } else {
+ this.iframe.onload = complete;
+ }
+};
diff --git a/lib/transports/polling-xhr.js b/lib/transports/polling-xhr.js
new file mode 100755
index 0000000..b850355
--- /dev/null
+++ b/lib/transports/polling-xhr.js
@@ -0,0 +1,384 @@
+/**
+ * Module requirements.
+ */
+
+var XMLHttpRequest = require('xmlhttprequest');
+var Polling = require('./polling');
+var Emitter = require('component-emitter');
+var inherit = require('component-inherit');
+var debug = require('debug')('engine.io-client:polling-xhr');
+
+/**
+ * Module exports.
+ */
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/**
+ * Empty function
+ */
+
+function empty(){}
+
+/**
+ * XHR Polling constructor.
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function XHR(opts){
+ Polling.call(this, opts);
+
+ if (global.location) {
+ var isSSL = 'https:' == location.protocol;
+ var port = location.port;
+
+ // some user agents have empty `location.port`
+ if (!port) {
+ port = isSSL ? 443 : 80;
+ }
+
+ this.xd = opts.hostname != global.location.hostname ||
+ port != opts.port;
+ this.xs = opts.secure != isSSL;
+ }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(XHR, Polling);
+
+/**
+ * XHR supports binary
+ */
+
+XHR.prototype.supportsBinary = true;
+
+/**
+ * Creates a request.
+ *
+ * @param {String} method
+ * @api private
+ */
+
+XHR.prototype.request = function(opts){
+ opts = opts || {};
+ opts.uri = this.uri();
+ opts.xd = this.xd;
+ opts.xs = this.xs;
+ opts.agent = this.agent || false;
+ opts.supportsBinary = this.supportsBinary;
+ opts.enablesXDR = this.enablesXDR;
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ return new Request(opts);
+};
+
+/**
+ * Sends data.
+ *
+ * @param {String} data to send.
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+XHR.prototype.doWrite = function(data, fn){
+ var isBinary = typeof data !== 'string' && data !== undefined;
+ var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
+ var self = this;
+ req.on('success', fn);
+ req.on('error', function(err){
+ self.onError('xhr post error', err);
+ });
+ this.sendXhr = req;
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+XHR.prototype.doPoll = function(){
+ debug('xhr poll');
+ var req = this.request();
+ var self = this;
+ req.on('data', function(data){
+ self.onData(data);
+ });
+ req.on('error', function(err){
+ self.onError('xhr poll error', err);
+ });
+ this.pollXhr = req;
+};
+
+/**
+ * Request constructor
+ *
+ * @param {Object} options
+ * @api public
+ */
+
+function Request(opts){
+ this.method = opts.method || 'GET';
+ this.uri = opts.uri;
+ this.xd = !!opts.xd;
+ this.xs = !!opts.xs;
+ this.async = false !== opts.async;
+ this.data = undefined != opts.data ? opts.data : null;
+ this.agent = opts.agent;
+ this.isBinary = opts.isBinary;
+ this.supportsBinary = opts.supportsBinary;
+ this.enablesXDR = opts.enablesXDR;
+
+ // SSL options for Node.js client
+ this.pfx = opts.pfx;
+ this.key = opts.key;
+ this.passphrase = opts.passphrase;
+ this.cert = opts.cert;
+ this.ca = opts.ca;
+ this.ciphers = opts.ciphers;
+ this.rejectUnauthorized = opts.rejectUnauthorized;
+
+ this.create();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Request.prototype);
+
+/**
+ * Creates the XHR object and sends the request.
+ *
+ * @api private
+ */
+
+Request.prototype.create = function(){
+ var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ var xhr = this.xhr = new XMLHttpRequest(opts);
+ var self = this;
+
+ try {
+ debug('xhr open %s: %s', this.method, this.uri);
+ xhr.open(this.method, this.uri, this.async);
+ if (this.supportsBinary) {
+ // This has to be done after open because Firefox is stupid
+ // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
+ xhr.responseType = 'arraybuffer';
+ }
+
+ if ('POST' == this.method) {
+ try {
+ if (this.isBinary) {
+ xhr.setRequestHeader('Content-type', 'application/octet-stream');
+ } else {
+ xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
+ }
+ } catch (e) {}
+ }
+
+ // ie6 check
+ if ('withCredentials' in xhr) {
+ xhr.withCredentials = true;
+ }
+
+ if (this.hasXDR()) {
+ xhr.onload = function(){
+ self.onLoad();
+ };
+ xhr.onerror = function(){
+ self.onError(xhr.responseText);
+ };
+ } else {
+ xhr.onreadystatechange = function(){
+ if (4 != xhr.readyState) return;
+ if (200 == xhr.status || 1223 == xhr.status) {
+ self.onLoad();
+ } else {
+ // make sure the `error` event handler that's user-set
+ // does not throw in the same tick and gets caught here
+ setTimeout(function(){
+ self.onError(xhr.status);
+ }, 0);
+ }
+ };
+ }
+
+ debug('xhr data %s', this.data);
+ xhr.send(this.data);
+ } catch (e) {
+ // Need to defer since .create() is called directly fhrom the constructor
+ // and thus the 'error' event can only be only bound *after* this exception
+ // occurs. Therefore, also, we cannot throw here at all.
+ setTimeout(function() {
+ self.onError(e);
+ }, 0);
+ return;
+ }
+
+ if (global.document) {
+ this.index = Request.requestsCount++;
+ Request.requests[this.index] = this;
+ }
+};
+
+/**
+ * Called upon successful response.
+ *
+ * @api private
+ */
+
+Request.prototype.onSuccess = function(){
+ this.emit('success');
+ this.cleanup();
+};
+
+/**
+ * Called if we have data.
+ *
+ * @api private
+ */
+
+Request.prototype.onData = function(data){
+ this.emit('data', data);
+ this.onSuccess();
+};
+
+/**
+ * Called upon error.
+ *
+ * @api private
+ */
+
+Request.prototype.onError = function(err){
+ this.emit('error', err);
+ this.cleanup(true);
+};
+
+/**
+ * Cleans up house.
+ *
+ * @api private
+ */
+
+Request.prototype.cleanup = function(fromError){
+ if ('undefined' == typeof this.xhr || null === this.xhr) {
+ return;
+ }
+ // xmlhttprequest
+ if (this.hasXDR()) {
+ this.xhr.onload = this.xhr.onerror = empty;
+ } else {
+ this.xhr.onreadystatechange = empty;
+ }
+
+ if (fromError) {
+ try {
+ this.xhr.abort();
+ } catch(e) {}
+ }
+
+ if (global.document) {
+ delete Request.requests[this.index];
+ }
+
+ this.xhr = null;
+};
+
+/**
+ * Called upon load.
+ *
+ * @api private
+ */
+
+Request.prototype.onLoad = function(){
+ var data;
+ try {
+ var contentType;
+ try {
+ contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];
+ } catch (e) {}
+ if (contentType === 'application/octet-stream') {
+ data = this.xhr.response;
+ } else {
+ if (!this.supportsBinary) {
+ data = this.xhr.responseText;
+ } else {
+ data = 'ok';
+ }
+ }
+ } catch (e) {
+ this.onError(e);
+ }
+ if (null != data) {
+ this.onData(data);
+ }
+};
+
+/**
+ * Check if it has XDomainRequest.
+ *
+ * @api private
+ */
+
+Request.prototype.hasXDR = function(){
+ return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
+};
+
+/**
+ * Aborts the request.
+ *
+ * @api public
+ */
+
+Request.prototype.abort = function(){
+ this.cleanup();
+};
+
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+
+if (global.document) {
+ Request.requestsCount = 0;
+ Request.requests = {};
+ if (global.attachEvent) {
+ global.attachEvent('onunload', unloadHandler);
+ } else if (global.addEventListener) {
+ global.addEventListener('beforeunload', unloadHandler, false);
+ }
+}
+
+function unloadHandler() {
+ for (var i in Request.requests) {
+ if (Request.requests.hasOwnProperty(i)) {
+ Request.requests[i].abort();
+ }
+ }
+}
diff --git a/lib/transports/polling.js b/lib/transports/polling.js
new file mode 100644
index 0000000..f76c227
--- /dev/null
+++ b/lib/transports/polling.js
@@ -0,0 +1,245 @@
+/**
+ * Module dependencies.
+ */
+
+var Transport = require('../transport');
+var parseqs = require('parseqs');
+var parser = require('engine.io-parser');
+var inherit = require('component-inherit');
+var debug = require('debug')('engine.io-client:polling');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Polling;
+
+/**
+ * Is XHR2 supported?
+ */
+
+var hasXHR2 = (function() {
+ var XMLHttpRequest = require('xmlhttprequest');
+ var xhr = new XMLHttpRequest({ xdomain: false });
+ return null != xhr.responseType;
+})();
+
+/**
+ * Polling interface.
+ *
+ * @param {Object} opts
+ * @api private
+ */
+
+function Polling(opts){
+ var forceBase64 = (opts && opts.forceBase64);
+ if (!hasXHR2 || forceBase64) {
+ this.supportsBinary = false;
+ }
+ Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(Polling, Transport);
+
+/**
+ * Transport name.
+ */
+
+Polling.prototype.name = 'polling';
+
+/**
+ * Opens the socket (triggers polling). We write a PING message to determine
+ * when the transport is open.
+ *
+ * @api private
+ */
+
+Polling.prototype.doOpen = function(){
+ this.poll();
+};
+
+/**
+ * Pauses polling.
+ *
+ * @param {Function} callback upon buffers are flushed and transport is paused
+ * @api private
+ */
+
+Polling.prototype.pause = function(onPause){
+ var pending = 0;
+ var self = this;
+
+ this.readyState = 'pausing';
+
+ function pause(){
+ debug('paused');
+ self.readyState = 'paused';
+ onPause();
+ }
+
+ if (this.polling || !this.writable) {
+ var total = 0;
+
+ if (this.polling) {
+ debug('we are currently polling - waiting to pause');
+ total++;
+ this.once('pollComplete', function(){
+ debug('pre-pause polling complete');
+ --total || pause();
+ });
+ }
+
+ if (!this.writable) {
+ debug('we are currently writing - waiting to pause');
+ total++;
+ this.once('drain', function(){
+ debug('pre-pause writing complete');
+ --total || pause();
+ });
+ }
+ } else {
+ pause();
+ }
+};
+
+/**
+ * Starts polling cycle.
+ *
+ * @api public
+ */
+
+Polling.prototype.poll = function(){
+ debug('polling');
+ this.polling = true;
+ this.doPoll();
+ this.emit('poll');
+};
+
+/**
+ * Overloads onData to detect payloads.
+ *
+ * @api private
+ */
+
+Polling.prototype.onData = function(data){
+ var self = this;
+ debug('polling got data %s', data);
+ var callback = function(packet, index, total) {
+ // if its the first message we consider the transport open
+ if ('opening' == self.readyState) {
+ self.onOpen();
+ }
+
+ // if its a close packet, we close the ongoing requests
+ if ('close' == packet.type) {
+ self.onClose();
+ return false;
+ }
+
+ // otherwise bypass onData and handle the message
+ self.onPacket(packet);
+ };
+
+ // decode payload
+ parser.decodePayload(data, this.socket.binaryType, callback);
+
+ // if an event did not trigger closing
+ if ('closed' != this.readyState) {
+ // if we got data we're not polling
+ this.polling = false;
+ this.emit('pollComplete');
+
+ if ('open' == this.readyState) {
+ this.poll();
+ } else {
+ debug('ignoring poll - transport state "%s"', this.readyState);
+ }
+ }
+};
+
+/**
+ * For polling, send a close packet.
+ *
+ * @api private
+ */
+
+Polling.prototype.doClose = function(){
+ var self = this;
+
+ function close(){
+ debug('writing close packet');
+ self.write([{ type: 'close' }]);
+ }
+
+ if ('open' == this.readyState) {
+ debug('transport open - closing');
+ close();
+ } else {
+ // in case we're trying to close while
+ // handshaking is in progress (GH-164)
+ debug('transport not open - deferring close');
+ this.once('open', close);
+ }
+};
+
+/**
+ * Writes a packets payload.
+ *
+ * @param {Array} data packets
+ * @param {Function} drain callback
+ * @api private
+ */
+
+Polling.prototype.write = function(packets){
+ var self = this;
+ this.writable = false;
+ var callbackfn = function() {
+ self.writable = true;
+ self.emit('drain');
+ };
+
+ var self = this;
+ parser.encodePayload(packets, this.supportsBinary, function(data) {
+ self.doWrite(data, callbackfn);
+ });
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+Polling.prototype.uri = function(){
+ var query = this.query || {};
+ var schema = this.secure ? 'https' : 'http';
+ var port = '';
+
+ // cache busting is forced
+ if (false !== this.timestampRequests) {
+ query[this.timestampParam] = +new Date + '-' + Transport.timestamps++;
+ }
+
+ if (!this.supportsBinary && !query.sid) {
+ query.b64 = 1;
+ }
+
+ query = parseqs.encode(query);
+
+ // avoid port if default for schema
+ if (this.port && (('https' == schema && this.port != 443) ||
+ ('http' == schema && this.port != 80))) {
+ port = ':' + this.port;
+ }
+
+ // prepend ? to query
+ if (query.length) {
+ query = '?' + query;
+ }
+
+ return schema + '://' + this.hostname + port + this.path + query;
+};
diff --git a/lib/transports/websocket.js b/lib/transports/websocket.js
new file mode 100644
index 0000000..4b6b3bd
--- /dev/null
+++ b/lib/transports/websocket.js
@@ -0,0 +1,238 @@
+/**
+ * Module dependencies.
+ */
+
+var Transport = require('../transport');
+var parser = require('engine.io-parser');
+var parseqs = require('parseqs');
+var inherit = require('component-inherit');
+var debug = require('debug')('engine.io-client:websocket');
+
+/**
+ * `ws` exposes a WebSocket-compatible interface in
+ * Node, or the `WebSocket` or `MozWebSocket` globals
+ * in the browser.
+ */
+
+var WebSocket = require('ws');
+
+/**
+ * Module exports.
+ */
+
+module.exports = WS;
+
+/**
+ * WebSocket transport constructor.
+ *
+ * @api {Object} connection options
+ * @api public
+ */
+
+function WS(opts){
+ var forceBase64 = (opts && opts.forceBase64);
+ if (forceBase64) {
+ this.supportsBinary = false;
+ }
+ Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(WS, Transport);
+
+/**
+ * Transport name.
+ *
+ * @api public
+ */
+
+WS.prototype.name = 'websocket';
+
+/*
+ * WebSockets support binary
+ */
+
+WS.prototype.supportsBinary = true;
+
+/**
+ * Opens socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doOpen = function(){
+ if (!this.check()) {
+ // let probe timeout
+ return;
+ }
+
+ var self = this;
+ var uri = this.uri();
+ var protocols = void(0);
+ var opts = { agent: this.agent };
+
+ // SSL options for Node.js client
+ opts.pfx = this.pfx;
+ opts.key = this.key;
+ opts.passphrase = this.passphrase;
+ opts.cert = this.cert;
+ opts.ca = this.ca;
+ opts.ciphers = this.ciphers;
+ opts.rejectUnauthorized = this.rejectUnauthorized;
+
+ this.ws = new WebSocket(uri, protocols, opts);
+
+ if (this.ws.binaryType === undefined) {
+ this.supportsBinary = false;
+ }
+
+ this.ws.binaryType = 'arraybuffer';
+ this.addEventListeners();
+};
+
+/**
+ * Adds event listeners to the socket
+ *
+ * @api private
+ */
+
+WS.prototype.addEventListeners = function(){
+ var self = this;
+
+ this.ws.onopen = function(){
+ self.onOpen();
+ };
+ this.ws.onclose = function(){
+ self.onClose();
+ };
+ this.ws.onmessage = function(ev){
+ self.onData(ev.data);
+ };
+ this.ws.onerror = function(e){
+ self.onError('websocket error', e);
+ };
+};
+
+/**
+ * Override `onData` to use a timer on iOS.
+ * See: https://gist.github.com/mloughran/2052006
+ *
+ * @api private
+ */
+
+if ('undefined' != typeof navigator
+ && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
+ WS.prototype.onData = function(data){
+ var self = this;
+ setTimeout(function(){
+ Transport.prototype.onData.call(self, data);
+ }, 0);
+ };
+}
+
+/**
+ * Writes data to socket.
+ *
+ * @param {Array} array of packets.
+ * @api private
+ */
+
+WS.prototype.write = function(packets){
+ var self = this;
+ this.writable = false;
+ // encodePacket efficient as it uses WS framing
+ // no need for encodePayload
+ for (var i = 0, l = packets.length; i < l; i++) {
+ parser.encodePacket(packets[i], this.supportsBinary, function(data) {
+ //Sometimes the websocket has already been closed but the browser didn't
+ //have a chance of informing us about it yet, in that case send will
+ //throw an error
+ try {
+ self.ws.send(data);
+ } catch (e){
+ debug('websocket closed before onclose event');
+ }
+ });
+ }
+
+ function ondrain() {
+ self.writable = true;
+ self.emit('drain');
+ }
+ // fake drain
+ // defer to next tick to allow Socket to clear writeBuffer
+ setTimeout(ondrain, 0);
+};
+
+/**
+ * Called upon close
+ *
+ * @api private
+ */
+
+WS.prototype.onClose = function(){
+ Transport.prototype.onClose.call(this);
+};
+
+/**
+ * Closes socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doClose = function(){
+ if (typeof this.ws !== 'undefined') {
+ this.ws.close();
+ }
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+WS.prototype.uri = function(){
+ var query = this.query || {};
+ var schema = this.secure ? 'wss' : 'ws';
+ var port = '';
+
+ // avoid port if default for schema
+ if (this.port && (('wss' == schema && this.port != 443)
+ || ('ws' == schema && this.port != 80))) {
+ port = ':' + this.port;
+ }
+
+ // append timestamp to URI
+ if (this.timestampRequests) {
+ query[this.timestampParam] = +new Date;
+ }
+
+ // communicate binary support capabilities
+ if (!this.supportsBinary) {
+ query.b64 = 1;
+ }
+
+ query = parseqs.encode(query);
+
+ // prepend ? to query
+ if (query.length) {
+ query = '?' + query;
+ }
+
+ return schema + '://' + this.hostname + port + this.path + query;
+};
+
+/**
+ * Feature detection for WebSocket.
+ *
+ * @return {Boolean} whether this transport is available.
+ * @api public
+ */
+
+WS.prototype.check = function(){
+ return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
+};
diff --git a/lib/xmlhttprequest.js b/lib/xmlhttprequest.js
new file mode 100644
index 0000000..3c21da4
--- /dev/null
+++ b/lib/xmlhttprequest.js
@@ -0,0 +1,36 @@
+// browser shim for xmlhttprequest module
+var hasCORS = require('has-cors');
+
+module.exports = function(opts) {
+ var xdomain = opts.xdomain;
+
+ // scheme must be same when usign XDomainRequest
+ // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
+ var xscheme = opts.xscheme;
+
+ // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
+ // https://github.com/Automattic/engine.io-client/pull/217
+ var enablesXDR = opts.enablesXDR;
+
+ // XMLHttpRequest can be disabled on IE
+ try {
+ if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+ return new XMLHttpRequest();
+ }
+ } catch (e) { }
+
+ // Use XDomainRequest for IE8 if enablesXDR is true
+ // because loading bar keeps flashing when using jsonp-polling
+ // https://github.com/yujiosaka/socke.io-ie8-loading-example
+ try {
+ if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
+ return new XDomainRequest();
+ }
+ } catch (e) { }
+
+ if (!xdomain) {
+ try {
+ return new ActiveXObject('Microsoft.XMLHTTP');
+ } catch(e) { }
+ }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..ba338b7
--- /dev/null
+++ b/package.json
@@ -0,0 +1,59 @@
+{
+ "name": "engine.io-client",
+ "description": "Client for the realtime Engine",
+ "version": "1.5.1",
+ "homepage": "http://socket.io",
+ "contributors": [
+ {
+ "name": "Guillermo Rauch",
+ "email": "rauchg at gmail.com"
+ },
+ {
+ "name": "Vladimir Dronnikov",
+ "email": "dronnikov at gmail.com"
+ },
+ {
+ "name": "Christoph Dorn",
+ "web": "https://github.com/cadorn"
+ },
+ {
+ "name": "Mark Mokryn",
+ "email": "mokesmokes at gmail.com"
+ }
+ ],
+ "dependencies": {
+ "has-cors": "1.0.3",
+ "ws": "0.4.31",
+ "xmlhttprequest": "https://github.com/rase-/node-XMLHttpRequest/archive/a6b6f2.tar.gz",
+ "component-emitter": "1.1.2",
+ "indexof": "0.0.1",
+ "engine.io-parser": "1.2.1",
+ "debug": "1.0.4",
+ "parseuri": "0.0.4",
+ "parsejson": "0.0.1",
+ "parseqs": "0.0.2",
+ "component-inherit": "0.0.3"
+ },
+ "devDependencies": {
+ "blob": "0.0.2",
+ "browserify": "6.2.0",
+ "concat-stream": "1.4.6",
+ "derequire": "1.2.0",
+ "engine.io": "1.5.1",
+ "expect.js": "0.2.0",
+ "express": "3.4.8",
+ "istanbul": "0.2.3",
+ "mocha": "1.16.2",
+ "zuul": "rase-/zuul#9d3a02"
+ },
+ "scripts": {
+ "test": "make test"
+ },
+ "browser": {
+ "xmlhttprequest": "./lib/xmlhttprequest.js"
+ },
+ "repository": {
+ "type": "git",
+ "url": "https://github.com/Automattic/engine.io-client.git"
+ }
+}
diff --git a/support/browserify.js b/support/browserify.js
new file mode 100644
index 0000000..6540e14
--- /dev/null
+++ b/support/browserify.js
@@ -0,0 +1,50 @@
+
+/**
+ * Module dependencies.
+ */
+
+var browserify = require('browserify');
+var derequire = require('derequire');
+var concat = require('concat-stream');
+var path = require.resolve('../');
+
+/**
+ * Module exports.
+ */
+
+module.exports = build;
+
+/**
+ * Make the build.
+ *
+ * @api public
+ */
+
+
+function build(fn){
+ var bundle = browserify({
+ builtins: false,
+ entries: [ path ],
+ insertGlobalVars: { global: glob },
+ standalone: 'eio'
+ }).bundle();
+
+ bundle.on('error', function (err) {
+ fn(err);
+ });
+
+ bundle.pipe(concat({ encoding: 'string' }, function (out) {
+ fn(null, derequire(out));
+ }));
+}
+
+/**
+ * Populates `global`.
+ *
+ * @api private
+ */
+
+function glob(){
+ return 'typeof self !== "undefined" ? self : '
+ + 'typeof window !== "undefined" ? window : {}';
+}
diff --git a/support/browserify.sh b/support/browserify.sh
new file mode 100755
index 0000000..0ea6a6a
--- /dev/null
+++ b/support/browserify.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env node
+
+require('./browserify')(function(err, out){
+ if (err) throw err;
+ console.log(out);
+});
diff --git a/test/arraybuffer/index.js b/test/arraybuffer/index.js
new file mode 100644
index 0000000..b755f06
--- /dev/null
+++ b/test/arraybuffer/index.js
@@ -0,0 +1,10 @@
+var wsSupport = require('has-cors');
+
+require('./polling.js');
+var uagent = navigator.userAgent;
+var isOldSimulator = ~uagent.indexOf('iPhone OS 4') || ~uagent.indexOf('iPhone OS 5');
+var isIE11 = !!navigator.userAgent.match(/Trident.*rv[ :]*11\./); // ws doesn't work at all in sauce labs
+var isAndroid = navigator.userAgent.match(/Android/i);
+if (wsSupport && !isOldSimulator && !isAndroid && !isIE11) {
+ require ('./ws.js');
+}
diff --git a/test/arraybuffer/polling.js b/test/arraybuffer/polling.js
new file mode 100644
index 0000000..fa94922
--- /dev/null
+++ b/test/arraybuffer/polling.js
@@ -0,0 +1,72 @@
+var expect = require('expect.js');
+var eio = require('../../');
+
+describe('arraybuffer', function() {
+ this.timeout(30000);
+
+ it('should be able to receive binary data when bouncing it back (polling)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket({ transports: ['polling'] });
+ socket.on('open', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ if (data === 'hi') return;
+
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ socket.close();
+ done();
+ });
+ });
+ });
+
+ it('should be able to receive binary data and a multibyte utf-8 string (polling)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+
+ var msg = 0;
+ var socket = new eio.Socket({ transports: ['polling'] });
+ socket.on('open', function() {
+ socket.send(binaryData);
+ socket.send('cash money €€€');
+ socket.on('message', function (data) {
+ if (data === 'hi') return;
+
+ if (msg == 0) {
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ msg++;
+ } else {
+ expect(data).to.be('cash money €€€');
+ socket.close();
+ done();
+ }
+ });
+ });
+ });
+
+ it('should be able to receive binary data when forcing base64 (polling)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket({ forceBase64: true });
+ socket.on('open', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ if (typeof data === 'string') return;
+
+ expect(data).to.be.an(ArrayBuffer);
+ var ia = new Int8Array(data);
+ expect(ia).to.eql(binaryData);
+ socket.close();
+ done();
+ });
+ });
+ });
+});
diff --git a/test/arraybuffer/ws.js b/test/arraybuffer/ws.js
new file mode 100644
index 0000000..cb7997e
--- /dev/null
+++ b/test/arraybuffer/ws.js
@@ -0,0 +1,79 @@
+var expect = require('expect.js');
+var eio = require('../../');
+
+describe('arraybuffer', function() {
+ this.timeout(30000);
+
+ it('should be able to receive binary data when bouncing it back (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ if (typeof data === 'string') return;
+
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+
+ socket.close();
+ done();
+ });
+ });
+ });
+ });
+
+ it('should be able to receive binary data and a multibyte utf-8 string (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+
+ var msg = 0;
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(binaryData);
+ socket.send('cash money €€€');
+ socket.on('message', function (data) {
+ if (data === 'hi') return;
+
+ if (msg == 0) {
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ msg++;
+ } else {
+ expect(data).to.be('cash money €€€');
+ socket.close();
+ done();
+ }
+ });
+ });
+ });
+ });
+
+ it('should be able to receive binary data when bouncing it back and forcing base64 (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket({ forceBase64: true });
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ if (typeof data === 'string') return;
+
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+
+ socket.close();
+ done();
+ });
+ });
+ });
+ });
+});
diff --git a/test/binary-fallback.js b/test/binary-fallback.js
new file mode 100644
index 0000000..27de8a4
--- /dev/null
+++ b/test/binary-fallback.js
@@ -0,0 +1,26 @@
+var expect = require('expect.js');
+var eio = require('../');
+
+describe('binary fallback', function() {
+ this.timeout(10000);
+
+ it('should be able to receive binary data when ArrayBuffer not available (polling)', function(done) {
+ var socket = new eio.Socket({ forceBase64: true });
+ socket.on('open', function() {
+ socket.send('give binary');
+ var firstPacket = true;
+ socket.on('message', function (data) {
+ if (firstPacket) {
+ firstPacket = false;
+ return;
+ }
+
+ expect(data.base64).to.be(true);
+ expect(data.data).to.equal('AAECAwQ=');
+
+ socket.close();
+ done();
+ });
+ });
+ });
+});
diff --git a/test/blob/index.js b/test/blob/index.js
new file mode 100644
index 0000000..33a1812
--- /dev/null
+++ b/test/blob/index.js
@@ -0,0 +1,10 @@
+var wsSupport = require('has-cors');
+
+require('./polling.js');
+var uagent = navigator.userAgent;
+var isOldSimulator = ~uagent.indexOf('iPhone OS 4') || ~uagent.indexOf('iPhone OS 5');
+var isIE11 = !!navigator.userAgent.match(/Trident.*rv[ :]*11\./); // ws doesn't work at all in sauce labs
+var isAndroid = navigator.userAgent.match(/Android/i);
+if (wsSupport && !isOldSimulator && !isAndroid && !isIE11) {
+ require('./ws.js');
+}
diff --git a/test/blob/polling.js b/test/blob/polling.js
new file mode 100644
index 0000000..711960e
--- /dev/null
+++ b/test/blob/polling.js
@@ -0,0 +1,53 @@
+var expect = require('expect.js');
+var eio = require('../../');
+
+var Blob = require('blob');
+
+describe('blob', function() {
+ this.timeout(30000);
+
+ it('should be able to receive binary data as blob when bouncing it back (polling)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket();
+ socket.binaryType = 'blob';
+ socket.on('open', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ if (typeof data === 'string') return;
+
+ expect(data).to.be.a(global.Blob);
+ var fr = new FileReader();
+ fr.onload = function() {
+ var ab = this.result;
+ var ia = new Int8Array(ab);
+ expect(ia).to.eql(binaryData);
+ socket.close();
+ done();
+ };
+ fr.readAsArrayBuffer(data);
+ });
+ });
+ });
+
+ it('should be able to send data as a blob when bouncing it back (polling)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ socket.send(new Blob([binaryData.buffer]));
+ socket.on('message', function (data) {
+ if (typeof data == 'string') return;
+
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ socket.close();
+ done();
+ });
+ });
+ });
+});
diff --git a/test/blob/ws.js b/test/blob/ws.js
new file mode 100644
index 0000000..a1c098b
--- /dev/null
+++ b/test/blob/ws.js
@@ -0,0 +1,72 @@
+var expect = require('expect.js');
+var eio = require('../../');
+
+var Blob = require('blob');
+
+describe('blob', function() {
+ this.timeout(30000);
+
+ it('should be able to receive binary data as blob when bouncing it back (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket();
+ socket.binaryType = 'blob';
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(binaryData);
+ socket.on('message', function (data) {
+ expect(data).to.be.a(Blob);
+ var fr = new FileReader();
+ fr.onload = function() {
+ var ab = this.result;
+ var ia = new Int8Array(ab);
+ expect(ia).to.eql(binaryData);
+ socket.close();
+ done();
+ };
+ fr.readAsArrayBuffer(data);
+ });
+ });
+ });
+ });
+
+ it('should be able to send data as a blob when bouncing it back (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(new Blob([binaryData.buffer]));
+ socket.on('message', function (data) {
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ socket.close();
+ done();
+ });
+ });
+ });
+ });
+
+ it('should be able to send data as a blob encoded into base64 when bouncing it back (ws)', function(done) {
+ var binaryData = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ binaryData[i] = i;
+ }
+ var socket = new eio.Socket({ forceBase64: true });
+ socket.on('open', function() {
+ socket.on('upgrade', function() {
+ socket.send(new Blob([binaryData.buffer]));
+ socket.on('message', function (data) {
+ expect(data).to.be.an(ArrayBuffer);
+ expect(new Int8Array(data)).to.eql(binaryData);
+ socket.close();
+ done();
+ });
+ });
+ });
+ });
+});
diff --git a/test/connection.js b/test/connection.js
new file mode 100644
index 0000000..a3bb959
--- /dev/null
+++ b/test/connection.js
@@ -0,0 +1,160 @@
+var expect = require('expect.js');
+var eio = require('../');
+
+var wsSupport = require('has-cors');
+var uagent = navigator.userAgent;
+var isOldSimulator = ~uagent.indexOf('iPhone OS 4') || ~uagent.indexOf('iPhone OS 5');
+var isIE11 = !!navigator.userAgent.match(/Trident.*rv[ :]*11\./); // ws doesn't work at all in sauce labs
+var isAndroid = navigator.userAgent.match(/Android/i);
+
+describe('connection', function() {
+ this.timeout(20000);
+
+ it('should connect to localhost', function(done){
+ var socket = new eio.Socket();
+ socket.on('open', function () {
+ socket.on('message', function (data) {
+ expect(data).to.equal('hi');
+ socket.close();
+ done();
+ });
+ });
+ });
+
+ it('should receive multibyte utf-8 strings with polling', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function () {
+ socket.send('cash money €€€');
+ socket.on('message', function (data) {
+ if ('hi' == data) return;
+ expect(data).to.be('cash money €€€');
+ socket.close();
+ done();
+ });
+ });
+ });
+
+ it('should receive emoji', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function () {
+ socket.send('\uD800-\uDB7F\uDB80-\uDBFF\uDC00-\uDFFF\uE000-\uF8FF');
+ socket.on('message', function (data) {
+ if ('hi' == data) return;
+ expect(data).to.be('\uD800-\uDB7F\uDB80-\uDBFF\uDC00-\uDFFF\uE000-\uF8FF');
+ socket.close();
+ done();
+ });
+ });
+ });
+
+ it('should not send packets if socket closes', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ var noPacket = true;
+ socket.on('packetCreate', function() {
+ noPacket = false;
+ });
+ socket.close();
+ socket.send('hi');
+ setTimeout(function() {
+ expect(noPacket).to.be(true);
+ done();
+ }, 1200);
+ });
+ });
+
+ // no `Worker` on old IE
+ if (global.Worker) {
+ it('should work in a worker', function(done){
+ var worker = new Worker('/test/support/worker.js');
+ worker.onmessage = function(e){
+ expect(e.data);
+ done();
+ };
+ });
+ }
+
+ it('should not connect at all when JSONP forced and disabled', function(done) {
+ var socket = eio.Socket({ transports: ['polling'], forceJSONP: true, jsonp: false });
+ socket.on('error', function(msg) {
+ expect(msg).to.be('No transports available');
+ done();
+ });
+ });
+
+ if (wsSupport && !isOldSimulator && !isAndroid && !isIE11) {
+ it('should connect with ws when JSONP forced and disabled', function(done) {
+ var socket = eio.Socket({ transports: ['polling', 'websocket'], forceJSONP: true, jsonp: false });
+
+ socket.on('open', function() {
+ expect(socket.transport.name).to.be('websocket');
+ socket.close();
+ done();
+ });
+ });
+
+ it('should defer close when upgrading', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ var upgraded = false;
+ socket.on('upgrade', function() {
+ upgraded = true;
+ }).on('upgrading', function() {
+ socket.on('close', function() {
+ expect(upgraded).to.be(true);
+ done();
+ });
+ socket.close();
+ });
+ });
+ });
+
+ it('should close on upgradeError if closing is deferred', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ var upgradeError = false;
+ socket.on('upgradeError', function() {
+ upgradeError = true;
+ }).on('upgrading', function() {
+ socket.on('close', function() {
+ expect(upgradeError).to.be(true);
+ done();
+ });
+ socket.close();
+ socket.transport.onError('upgrade error');
+ });
+ });
+ });
+
+ it('should not send packets if closing is deferred', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ var noPacket = true;
+ socket.on('upgrading', function() {
+ socket.on('packetCreate', function() {
+ noPacket = false;
+ });
+ socket.close();
+ socket.send('hi');
+ });
+ setTimeout(function() {
+ expect(noPacket).to.be(true);
+ done();
+ }, 1200);
+ });
+ });
+
+ it('should send all buffered packets if closing is deferred', function(done) {
+ var socket = new eio.Socket();
+ socket.on('open', function() {
+ socket.on('upgrading', function() {
+ socket.send('hi');
+ socket.close();
+ }).on('close', function() {
+ expect(socket.writeBuffer).to.have.length(0);
+ done();
+ });
+ });
+ });
+ }
+});
diff --git a/test/engine.io-client.js b/test/engine.io-client.js
new file mode 100644
index 0000000..8203265
--- /dev/null
+++ b/test/engine.io-client.js
@@ -0,0 +1,47 @@
+
+var expect = require('expect.js');
+var eio = require('../');
+
+describe('engine.io-client', function () {
+
+ it('should expose protocol number', function () {
+ expect(eio.protocol).to.be.a('number');
+ });
+
+ it('should properly parse http uri without port', function(done) {
+ var server = eio('http://localhost');
+ server.on('close', function() {
+ done();
+ });
+ expect(server.port).to.be('80');
+ server.close();
+ });
+
+ it('should properly parse https uri without port', function(done) {
+ var server = eio('https://localhost');
+ server.on('close', function() {
+ done();
+ });
+ expect(server.port).to.be('443');
+ server.close();
+ });
+
+ it('should properly parse wss uri without port', function(done) {
+ var server = eio('wss://localhost');
+ server.on('close', function() {
+ done();
+ });
+ expect(server.port).to.be('443');
+ server.close();
+ });
+
+ it('should properly parse wss uri with port', function(done) {
+ var server = eio('wss://localhost:2020');
+ server.on('close', function() {
+ done();
+ });
+ expect(server.port).to.be('2020');
+ server.close();
+ });
+
+});
diff --git a/test/index.js b/test/index.js
new file mode 100644
index 0000000..5ea0f57
--- /dev/null
+++ b/test/index.js
@@ -0,0 +1,31 @@
+var env = require('./support/env');
+
+// whitelist some globals to avoid warnings
+global.__eio = null;
+global.___eio = null;
+global.WEB_SOCKET_LOGGER = null;
+global.WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = null;
+global.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION = null;
+global.WEB_SOCKET_SWF_LOCATION = null;
+
+var Blob = require('blob');
+
+require('./engine.io-client');
+require('./socket');
+require('./transport');
+
+// browser only tests
+if (env.browser) {
+ require('./connection');
+ require('./transports');
+ require('./xmlhttprequest');
+ if (global.ArrayBuffer) {
+ require('./arraybuffer');
+ } else {
+ require('./binary-fallback');
+ }
+
+ if (Blob) {
+ require('./blob');
+ }
+}
diff --git a/test/socket.js b/test/socket.js
new file mode 100644
index 0000000..d8a12ac
--- /dev/null
+++ b/test/socket.js
@@ -0,0 +1,16 @@
+var expect = require('expect.js');
+var eio = require('../');
+var hasCORS = require('has-cors');
+
+describe('Socket', function () {
+
+ this.timeout(10000);
+
+ describe('filterUpgrades', function () {
+ it('should return only available transports', function () {
+ var socket = new eio.Socket({'transports': ['polling']});
+ expect(socket.filterUpgrades(['polling','websocket'])).to.eql(['polling']);
+ });
+ });
+
+});
diff --git a/test/support/env.js b/test/support/env.js
new file mode 100644
index 0000000..c1d494e
--- /dev/null
+++ b/test/support/env.js
@@ -0,0 +1,5 @@
+// WARNING this is bad practice
+// we only do this in our tests because we need to test engine.io-client
+// support in browsers and in node.js
+// some tests do not yet work in both
+module.exports.browser = !!global.window;
diff --git a/test/support/public/worker.js b/test/support/public/worker.js
new file mode 100644
index 0000000..08ceb44
--- /dev/null
+++ b/test/support/public/worker.js
@@ -0,0 +1,8 @@
+/*global importScripts,eio,postMessage*/
+
+importScripts('/test/support/engine.io.js');
+
+var socket = new eio.Socket();
+socket.on('message', function(msg){
+ postMessage(msg);
+});
diff --git a/test/support/server.js b/test/support/server.js
new file mode 100644
index 0000000..e497971
--- /dev/null
+++ b/test/support/server.js
@@ -0,0 +1,40 @@
+// this is a test server to support tests which make requests
+
+var express = require('express');
+var app = express();
+var join = require('path').join;
+var http = require('http').Server(app);
+var server = require('engine.io').attach(http, {'pingInterval': 500});
+var browserify = require('../../support/browserify');
+
+http.listen(process.env.ZUUL_PORT);
+
+// server worker.js as raw file
+app.use('/test/support', express.static(join(__dirname, 'public')));
+
+// server engine.io.js via browserify
+app.get('/test/support/engine.io.js', function(err, res, next) {
+ browserify(function(err, src) {
+ if (err) return next(err);
+ res.set('Content-Type', 'application/javascript');
+ res.send(src);
+ });
+});
+
+server.on('connection', function(socket){
+ socket.send('hi');
+
+ // Bounce any received messages back
+ socket.on('message', function (data) {
+ if (data === 'give binary') {
+ var abv = new Int8Array(5);
+ for (var i = 0; i < 5; i++) {
+ abv[i] = i;
+ }
+ socket.send(abv);
+ return;
+ }
+
+ socket.send(data);
+ });
+});
diff --git a/test/transport.js b/test/transport.js
new file mode 100644
index 0000000..878a552
--- /dev/null
+++ b/test/transport.js
@@ -0,0 +1,183 @@
+
+var expect = require('expect.js');
+var eio = require('../');
+var env = require('./support/env');
+
+describe('Transport', function () {
+
+ describe('rememberUpgrade', function () {
+ it('should remember websocket connection', function (done) {
+ var socket = new eio.Socket();
+ expect(socket.transport.name).to.be('polling');
+
+ var timeout = setTimeout(function(){
+ socket.close();
+ done();
+ }, 300);
+
+ socket.on('upgrade', function (transport) {
+ clearTimeout(timeout);
+ socket.close();
+ if(transport.name == 'websocket') {
+ var socket2 = new eio.Socket({ 'rememberUpgrade': true });
+ expect(socket2.transport.name).to.be('websocket');
+ }
+ done();
+ });
+ });
+
+ it('should not remember websocket connection', function (done) {
+ var socket = new eio.Socket();
+ expect(socket.transport.name).to.be('polling');
+
+ var timeout = setTimeout(function(){
+ socket.close();
+ done();
+ }, 300);
+
+ socket.on('upgrade', function (transport) {
+ clearTimeout(timeout);
+ socket.close();
+ if(transport.name == 'websocket') {
+ var socket2 = new eio.Socket({ 'rememberUpgrade': false });
+ expect(socket2.transport.name).to.not.be('websocket');
+ }
+ done();
+ });
+ });
+ });
+
+ describe('public constructors', function () {
+ it('should include Transport', function () {
+ expect(eio.Transport).to.be.a('function');
+ });
+
+ it('should include Polling and WebSocket', function () {
+ expect(eio.transports).to.be.an('object');
+ expect(eio.transports.polling).to.be.a('function');
+ expect(eio.transports.websocket).to.be.a('function');
+ });
+ });
+
+ describe('transport uris', function () {
+ it('should generate an http uri', function () {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , secure: false
+ , query: { sid: 'test' }
+ , timestampRequests: false
+ });
+ expect(polling.uri()).to.contain('http://localhost/engine.io?sid=test');
+ });
+
+ it('should generate an http uri w/o a port', function () {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , secure: false
+ , query: { sid: 'test' }
+ , port: 80
+ , timestampRequests: false
+ });
+ expect(polling.uri()).to.contain('http://localhost/engine.io?sid=test');
+ });
+
+ it('should generate an http uri with a port', function () {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , secure: false
+ , query: { sid: 'test' }
+ , port: 3000
+ , timestampRequests: false
+ });
+ expect(polling.uri()).to.contain('http://localhost:3000/engine.io?sid=test');
+ });
+
+ it('should generate an https uri w/o a port', function () {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , secure: true
+ , query: { sid: 'test' }
+ , port: 443
+ , timestampRequests: false
+ });
+ expect(polling.uri()).to.contain('https://localhost/engine.io?sid=test');
+ });
+
+ it('should generate a timestamped uri', function () {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , timestampParam: 't'
+ , timestampRequests: true
+ });
+ expect(polling.uri()).to.match(/http:\/\/localhost\/engine\.io\?(j=[0-9]+&)?(t=[0-9]+)/);
+ });
+
+ it('should generate a ws uri', function () {
+ var ws = new eio.transports.websocket({
+ path: '/engine.io'
+ , hostname: 'test'
+ , secure: false
+ , query: { transport: 'websocket' }
+ , timestampRequests: false
+ });
+ expect(ws.uri()).to.be('ws://test/engine.io?transport=websocket');
+ });
+
+ it('should generate a wss uri', function () {
+ var ws = new eio.transports.websocket({
+ path: '/engine.io'
+ , hostname: 'test'
+ , secure: true
+ , query: {}
+ , timestampRequests: false
+ });
+ expect(ws.uri()).to.be('wss://test/engine.io');
+ });
+
+ it('should timestamp ws uris', function () {
+ var ws = new eio.transports.websocket({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , timestampParam: 'woot'
+ , timestampRequests: true
+ });
+ expect(ws.uri()).to.match(/ws:\/\/localhost\/engine\.io\?woot=[0-9]+/);
+ });
+ });
+
+// these are server only
+if (!env.browser) {
+ describe('options', function () {
+ it('should accept an `agent` option for WebSockets', function (done) {
+ var polling = new eio.transports.websocket({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , agent: {
+ addRequest: function () {
+ done();
+ }
+ }
+ });
+ polling.doOpen();
+ });
+ it('should accept an `agent` option for XMLHttpRequest', function (done) {
+ var polling = new eio.transports.polling({
+ path: '/engine.io'
+ , hostname: 'localhost'
+ , agent: {
+ addRequest: function () {
+ done();
+ }
+ }
+ });
+ polling.doOpen();
+ });
+ });
+}
+
+});
diff --git a/test/transports/index.js b/test/transports/index.js
new file mode 100644
index 0000000..d4503c8
--- /dev/null
+++ b/test/transports/index.js
@@ -0,0 +1 @@
+require ('./polling-xhr.js');
diff --git a/test/transports/polling-xhr.js b/test/transports/polling-xhr.js
new file mode 100644
index 0000000..a0310ff
--- /dev/null
+++ b/test/transports/polling-xhr.js
@@ -0,0 +1,59 @@
+var expect = require('expect.js');
+var XHR = require('../../lib/transports/polling-xhr');
+var isIE8 = /MSIE 8/.test(navigator.userAgent);
+
+describe('XHR', function() {
+ describe('Request', function() {
+ describe('hasXDR', function() {
+ if (isIE8) {
+ it('should return true when xscheme is false and enablesXDR is true', function() {
+ var request = new XHR.Request({
+ uri: "http://localhost/engine.io?sid=test"
+ , xd: true
+ , xs: false
+ , enablesXDR: true
+ });
+ expect(request.hasXDR()).to.be(true);
+ });
+
+ it('should return false when xscheme is true', function() {
+ var request;
+ request = new XHR.Request({
+ uri: "http://localhost/engine.io?sid=test"
+ , xd: true
+ , xs: true
+ , enablesXDR: true
+ });
+ expect(request.hasXDR()).to.be(false);
+
+ request = new XHR.Request({
+ uri: "http://localhost/engine.io?sid=test"
+ , xd: true
+ , xs: true
+ , enablesXDR: true
+ });
+ expect(request.hasXDR()).to.be(false);
+ });
+
+ it('should return false when enablesXDR is false', function() {
+ var request;
+ request = new XHR.Request({
+ uri: "http://localhost/engine.io?sid=test"
+ , xd: true
+ , xs: true
+ , enablesXDR: false
+ });
+ expect(request.hasXDR()).to.be(false);
+
+ request = new XHR.Request({
+ uri: "http://localhost/engine.io?sid=test"
+ , xd: true
+ , xs: false
+ , enablesXDR: false
+ });
+ expect(request.hasXDR()).to.be(false);
+ });
+ }
+ });
+ });
+});
diff --git a/test/xmlhttprequest.js b/test/xmlhttprequest.js
new file mode 100644
index 0000000..8faf9e0
--- /dev/null
+++ b/test/xmlhttprequest.js
@@ -0,0 +1,84 @@
+var expect = require('expect.js');
+var XMLHttpRequest = require('../lib/xmlhttprequest');
+var isIE8_9 = /MSIE (8|9)/.test(navigator.userAgent);
+var isIE10_11 = /MSIE 10|Trident.*rv[ :]*11\./.test(navigator.userAgent);
+
+describe('XMLHttpRequest', function () {
+
+ if (isIE8_9) {
+ describe('IE8_9', function() {
+ context('when xdomain is false', function() {
+ it('should have same properties as XMLHttpRequest does', function() {
+ var xhra = new XMLHttpRequest({xdomain: false, xscheme: false, enablesXDR: false});
+ expect(xhra).to.be.an('object');
+ expect(xhra).to.have.property('open');
+ expect(xhra).to.have.property('onreadystatechange');
+ var xhrb = new XMLHttpRequest({xdomain: false, xscheme: false, enablesXDR: true});
+ expect(xhrb).to.be.an('object');
+ expect(xhrb).to.have.property('open');
+ expect(xhrb).to.have.property('onreadystatechange');
+ var xhrc = new XMLHttpRequest({xdomain: false, xscheme: true, enablesXDR: false});
+ expect(xhrc).to.be.an('object');
+ expect(xhrc).to.have.property('open');
+ expect(xhrc).to.have.property('onreadystatechange');
+ var xhrd = new XMLHttpRequest({xdomain: false, xscheme: true, enablesXDR: true});
+ expect(xhrd).to.be.an('object');
+ expect(xhrd).to.have.property('open');
+ expect(xhrd).to.have.property('onreadystatechange');
+ });
+ });
+
+ context('when xdomain is true', function() {
+ context('when xscheme is false and enablesXDR is true', function() {
+ it('should have same properties as XDomainRequest does', function() {
+ var xhr = new XMLHttpRequest({xdomain: true, xscheme: false, enablesXDR: true});
+ expect(xhr).to.be.an('object');
+ expect(xhr).to.have.property('open');
+ expect(xhr).to.have.property('onload');
+ expect(xhr).to.have.property('onerror');
+ });
+ });
+
+ context('when xscheme is true', function() {
+ it('should not have open in properties', function() {
+ var xhra = new XMLHttpRequest({xdomain: true, xscheme: true, enablesXDR: false});
+ expect(xhra).to.be.an('object');
+ expect(xhra).not.to.have.property('open');
+ var xhrb = new XMLHttpRequest({xdomain: true, xscheme: true, enablesXDR: true});
+ expect(xhrb).to.be.an('object');
+ expect(xhrb).not.to.have.property('open');
+ });
+ });
+
+ context('when enablesXDR is false', function() {
+ it('should not have open in properties', function() {
+ var xhra = new XMLHttpRequest({xdomain: true, xscheme: false, enablesXDR: false});
+ expect(xhra).to.be.an('object');
+ expect(xhra).not.to.have.property('open');
+ var xhrb = new XMLHttpRequest({xdomain: true, xscheme: true, enablesXDR: false});
+ expect(xhrb).to.be.an('object');
+ expect(xhrb).not.to.have.property('open');
+ });
+ });
+ });
+ });
+ }
+
+ if (isIE10_11) {
+ describe('IE10_11', function() {
+ context('when enablesXDR is true and xscheme is false', function() {
+ it('should have same properties as XMLHttpRequest does', function() {
+ var xhra = new XMLHttpRequest({xdomain: false, xscheme: false, enablesXDR: true});
+ expect(xhra).to.be.an('object');
+ expect(xhra).to.have.property('open');
+ expect(xhra).to.have.property('onreadystatechange');
+ var xhrb = new XMLHttpRequest({xdomain: true, xscheme: false, enablesXDR: true});
+ expect(xhrb).to.be.an('object');
+ expect(xhrb).to.have.property('open');
+ expect(xhrb).to.have.property('onreadystatechange');
+ });
+ });
+ });
+ }
+
+});
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