1/* 2** igmpproxy - IGMP proxy based multicast router 3** Copyright (C) 2005 Johnny Egeland <johnny@rlo.org> 4** 5** This program is free software; you can redistribute it and/or modify 6** it under the terms of the GNU General Public License as published by 7** the Free Software Foundation; either version 2 of the License, or 8** (at your option) any later version. 9** 10** This program is distributed in the hope that it will be useful, 11** but WITHOUT ANY WARRANTY; without even the implied warranty of 12** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13** GNU General Public License for more details. 14** 15** You should have received a copy of the GNU General Public License 16** along with this program; if not, write to the Free Software 17** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18** 19**---------------------------------------------------------------------------- 20** 21** This software is derived work from the following software. The original 22** source code has been modified from it's original state by the author 23** of igmpproxy. 24** 25** smcroute 0.92 - Copyright (C) 2001 Carsten Schill <carsten@cschill.de> 26** - Licensed under the GNU General Public License, version 2 27** 28** mrouted 3.9-beta3 - COPYRIGHT 1989 by The Board of Trustees of 29** Leland Stanford Junior University. 30** - Original license can be found in the Stanford.txt file. 31** 32*/ 33/** 34* udpsock.c contains function for creating a UDP socket. 35* 36*/ 37 38#include "igmpproxy.h" 39 40/** 41* Creates and connects a simple UDP socket to the target 42* 'PeerInAdr':'PeerPort' 43* 44* @param PeerInAdr - The address to connect to 45* @param PeerPort - The port to connect to 46* 47*/ 48int openUdpSocket( uint32_t PeerInAdr, uint16_t PeerPort ) { 49 int Sock; 50 struct sockaddr_in SockAdr; 51 52 if( (Sock = socket( AF_INET, SOCK_RAW, IPPROTO_IGMP )) < 0 ) 53 my_log( LOG_ERR, errno, "UDP socket open" ); 54 55 memset( &SockAdr, 0, sizeof( SockAdr ) ); 56 SockAdr.sin_family = AF_INET; 57 SockAdr.sin_port = htons(PeerPort); 58 SockAdr.sin_addr.s_addr = htonl(PeerInAdr); 59 60 if( bind( Sock, (struct sockaddr *)&SockAdr, sizeof( SockAdr ) ) ) 61 my_log( LOG_ERR, errno, "UDP socket bind" ); 62 63 return Sock; 64} 65 66