[Tux4kids-commits] r991 - tuxmath/trunk/src

[akash gangil]

Author: gangil-guest
Date: 2009-05-25 14:08:33 +0000 (Mon, 25 May 2009)
New Revision: 991

Added:
   tuxmath/trunk/src/network.c
Log:
this file would contain all the network functions

Added: tuxmath/trunk/src/network.c
===================================================================
--- tuxmath/trunk/src/network.c	                        (rev 0)
+++ tuxmath/trunk/src/network.c	2009-05-25 14:08:33 UTC (rev 991)
@@ -0,0 +1,134 @@
+
+//** this file would contain all the network related functions**
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "SDL.h"
+#include "SDL_net.h"
+
+//*** ipaddress of the server and the port would be taken by the user @ the time he selects "LAN multiplayer" from the options menu..
+
+//***also should I fix the port beforehand or ask it from the user...
+
+int lan_client_connect(char *host,int port)            //here "host" is either the hostname or the ipaddress(of the server) in string
+{
+IPaddress ip;
+TCPsocket sock;
+Uint16 portnum;
+
+portnum=(Uint16) strtol(port,NULL,0);
+
+// initialize SDL
+if(SDL_Init(0)==-1)
+{
+printf("SDL_Init: %s\n",SDL_GetError());
+exit(1);
+}
+
+// initialize SDL_net
+if(SDLNet_Init()==-1)
+{
+printf("SDLNet_Init: %s\n",SDLNet_GetError());
+exit(2);
+}
+
+
+// Resolve the argument into an IPaddress type
+if(SDLNet_ResolveHost(&ip,*host,portnum)==-1)
+{
+printf("SDLNet_ResolveHost: %s\n",SDLNet_GetError());
+exit(3);
+}
+
+//connect to the "host" @ port "portnum"
+sock=SDLNet_TCP_Open(&ip);
+if(!sock)
+{
+printf("SDLNet_TCP_Open: %s\n",SDLNet_GetError());
+exit(4);
+}
+
+
+
+return(0);
+}
+
+
+/***      server connection function    ****/
+
+int lan_server_connect(int port)
+{
+IPaddress ip; //int *remoteip;
+TCPsocket server,client;
+//Uint32 ipaddr;
+Uint16 portnum;
+
+
+// initialize SDL
+if(SDL_Init(0)==-1)
+{
+printf("SDL_Init: %s\n",SDL_GetError());
+exit(1);
+}
+
+// initialize SDL_net
+if(SDLNet_Init()==-1)
+{
+printf("SDLNet_Init: %s\n",SDLNet_GetError());
+exit(2);
+}
+
+
+portnum=(Uint16)strtol(port,NULL,0);
+
+// Resolve the argument into an IPaddress type
+if(SDLNet_ResolveHost(&ip,NULL,portum)==-1)
+{
+printf("SDLNet_ResolveHost: %s\n",SDLNet_GetError());
+exit(3);
+}
+
+// open the server socket
+server=SDLNet_TCP_Open(&ip);
+if(!server)
+{
+printf("SDLNet_TCP_Open: %s\n",SDLNet_GetError());
+exit(4);
+}
+
+while(1)
+{
+// try to accept a connection
+client=SDLNet_TCP_Accept(server);
+if(!client)
+{ // no connection accepted
+//printf("SDLNet_TCP_Accept: %s\n",SDLNet_GetError());
+SDL_Delay(100); //sleep 1/10th of a second
+continue;
+}
+
+// get the clients IP and port number
+remoteip=SDLNet_TCP_GetPeerAddress(client);
+if(!remoteip)
+{
+printf("SDLNet_TCP_GetPeerAddress: %s\n",SDLNet_GetError());
+continue;
+}
+
+/*for testing purpose to check if it is connected to the desired client
+// print out the clients IP and port number
+ipaddr=SDL_SwapBE32(remoteip->host);
+printf("Accepted a connection from %d.%d.%d.%d port %hu\n",
+ipaddr>>24,
+(ipaddr>>16)&0xff,
+(ipaddr>>8)&0xff,
+ipaddr&0xff,
+remoteip->port);
+
+*/
+}
+
+return(0);