[Bug 1346431] [NEW] Mumble server does not accept connections when started at machine boot time, works when service is restarted manually

[Benjamin Xiao]

Public bug reported:

I have an Ubuntu 14.04 desktop machine that has mumble-server installed.
I have configured it to start at boot time using "sudo dpkg-reconfigure
mumble-server". However, the server seems to not accept any connections,
even though it is running. If I do a "sudo service mumble-server
restart", then it starts accepting connections.

I have taken a look at the mumble logs and I've noticed that when
mumble-server is started at boot time, it doesn't show a line saying
that it is listening for connections.

<W>2014-07-21 02:41:12.732 Initializing settings from /etc/mumble-server.ini (basepath /etc)
<W>2014-07-21 02:41:12.734 OpenSSL: OpenSSL 1.0.1f 6 Jan 2014
<C>2014-07-21 02:41:12.735 Successfully switched to uid 118
<W>2014-07-21 02:41:12.857 ServerDB: Opened SQLite database /var/lib/mumble-server/mumble-server.sqlite
<W>2014-07-21 02:41:12.859 Resource limits were 0 0
<W>2014-07-21 02:41:12.859 Successfully dropped capabilities
<W>2014-07-21 02:41:12.861 DBus registration succeeded
<W>2014-07-21 02:41:12.866 MurmurIce: Endpoint "tcp -h 127.0.0.1 -p 6502" running
<W>2014-07-21 02:41:12.932 Murmur 1.2.4 (1.2.4-0.2ubuntu1.1) running on X11: Ubuntu 14.04 LTS: Booting servers
<W>2014-07-21 02:41:12.964 1 => Announcing server via bonjour
<W>2014-07-21 02:41:12.994 1 => Not registering server as public


However after I do a service restart, I see a "Server listening on
[::]:64738" line in the logs. The server is able to accept connections
when this line is present.


<W>2014-07-21 02:44:49.614 MurmurIce: Shutdown complete
<W>2014-07-21 02:44:49.667 Initializing settings from /etc/mumble-server.ini (basepath /etc)
<W>2014-07-21 02:44:49.668 OpenSSL: OpenSSL 1.0.1f 6 Jan 2014
<C>2014-07-21 02:44:49.668 Successfully switched to uid 118
<W>2014-07-21 02:44:49.705 ServerDB: Opened SQLite database /var/lib/mumble-server/mumble-server.sqlite
<W>2014-07-21 02:44:49.706 Resource limits were 0 0
<W>2014-07-21 02:44:49.707 Successfully dropped capabilities
<W>2014-07-21 02:44:49.708 DBus registration succeeded
<W>2014-07-21 02:44:49.710 MurmurIce: Endpoint "tcp -h 127.0.0.1 -p 6502" running
<W>2014-07-21 02:44:49.750 Murmur 1.2.4 (1.2.4-0.2ubuntu1.1) running on X11: Ubuntu 14.04 LTS: Booting servers
<W>2014-07-21 02:44:49.783 1 => Server listening on [::]:64738
<W>2014-07-21 02:44:49.810 1 => Announcing server via bonjour
<W>2014-07-21 02:44:49.844 1 => Not registering server as public


This bug is really annoying because I have to make sure to do a service restart every time I reboot the machine. This machine is meant as a personal server and it needs to be up constantly. Sometimes I'll forget to do a mumble-server restart and mumble is basically unavailable to everyone who tries to connect.

My theory is that because I am using Network Manager to connect to the
internet, maybe my interface isn't ready by the time mumble-server
starts? I am using an SSD drive, so maybe mumble-server is starting up
too fast and there is a race condition. Regardless, mumble-server should
automatically start listening for connections when it detects that the
network is up.


Steps to reproduce:
1.) Install mumble-server
2.) Do a "sudo dpkg-reconfigure mumble-server" and set it to start on boot with high priority privileges
3.) Restart the machine
4.) Try connecting to the server using a mumble client. This will not work.
5.) Do a "sudo service mumble-server restart".
6.) Connect again and verify that it works.

Expected behavior:
1.) Mumble server should accept connections when the service is started at boot time.

Current behavior:
1.) Mumble server does not accept connections when it is started at boot time. It starts working only after a manual service restart.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: mumble-server 1.2.4-0.2ubuntu1.1
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
Date: Mon Jul 21 10:41:59 2014
InstallationDate: Installed on 2014-06-11 (40 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: mumble
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.default.mumble.server: [modified]
mtime.conffile..etc.default.mumble.server: 2014-07-21T02:40:32.651299

** Affects: mumble (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1346431

Title:
  Mumble server does not accept connections when started at machine boot
  time, works when service is restarted manually

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