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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// Copyright (c) 1996-2001, Live Networks, Inc. All rights reserved
// A program that receives and prints SDP/SAP announcements
// (on the default SDP/SAP directory: 224.2.127.254/9875)
#include "Groupsock.hh"
#include "GroupsockHelper.hh"
#include "BasicUsageEnvironment.hh"
#include <stdio.h>
static unsigned const maxPacketSize = 65536;
static unsigned char packet[maxPacketSize+1];
int main(int argc, char** argv) {
// Begin by setting up our usage environment:
TaskScheduler* scheduler = BasicTaskScheduler::createNew();
UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);
// Create a 'groupsock' for the input multicast group,port:
char* sessionAddressStr = "224.2.127.254";
struct in_addr sessionAddress;
sessionAddress.s_addr = our_inet_addr(sessionAddressStr);
const Port port(9875);
const unsigned char ttl = 0; // we're only reading from this mcast group
Groupsock inputGroupsock(*env, sessionAddress, port, ttl);
// Start reading and printing incoming packets
// (Because this is the only thing we do, we can just do this
// synchronously, in a loop, so we don't need to set up an asynchronous
// event handler like we do in most of the other test programs.)
unsigned packetSize;
struct sockaddr_in fromAddress;
while (inputGroupsock.handleRead(packet, maxPacketSize,
packetSize, fromAddress)) {
printf("\n[packet from %s (%d bytes)]\n",
our_inet_ntoa(fromAddress.sin_addr), packetSize);
// Ignore the first 8 bytes (SAP header).
if (packetSize < 8) {
*env << "Ignoring short packet from "
<< our_inet_ntoa(fromAddress.sin_addr) << "%s!\n";
continue;
}
packet[packetSize] = '\0'; // just in case
printf((char*)(packet+8));
}
return 0; // only to prevent compiler warning
}
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