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