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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
**********/
// "mTunnel" multicast access service
// Copyright (c) 1996-1998 Live Networks, Inc. All rights reserved.
// IO event handlers
// Implementation
#include "IOHandlers.hh"
#include "TunnelEncaps.hh"
//##### TEMP: Use a single buffer, sized for UDP tunnels:
//##### This assumes that the I/O handlers are non-reentrant
static unsigned const maxPacketLength = 50*1024; // bytes
// This is usually overkill, because UDP packets are usually no larger
// than the typical Ethernet MTU (1500 bytes). However, I've seen
// reports of Windows Media Servers sending UDP packets as large as
// 27 kBytes. These will probably undego lots of IP-level
// fragmentation, but that occurs below us. We just have to hope that
// fragments don't get lost.
static unsigned const ioBufferSize
= maxPacketLength + TunnelEncapsulationTrailerMaxSize;
static unsigned char ioBuffer[ioBufferSize];
void socketReadHandler(Socket* sock, int /*mask*/) {
unsigned bytesRead;
struct sockaddr_in fromAddress;
UsageEnvironment& saveEnv = sock->env();
// because handleRead(), if it fails, may delete "sock"
if (!sock->handleRead(ioBuffer, ioBufferSize, bytesRead, fromAddress)) {
saveEnv.reportBackgroundError();
}
}
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