[FFmpeg-devel] [PATCH] Add code in rtpproto.c/udp.c to test incoming packets against the host/port looked up in rtp/udp_set_remote_url

Sam Creasey sammy
Mon Sep 27 17:06:00 CEST 2010

This patch looks somewhat (though not entirely) related to issue 1688,
though I'm attempting to solve a slightly different problem that that
author proposed.

The current ffmpeg source does not look at the source address of
incoming udp/rtp packets (udp uses recv() instead of recvfrom(),
rtpproto uses recvfrom() and discards the from).  This patch would
check the remote address to match the address from udp_set_remote_url,
and reject the packet unless

*) the specified address was a multicast address
*) the address family is ipv4 or ipv6, and the address and port match
*) the address family is something else (unlikely for udp/rtp, but
might as well let through things we don't know how to test).
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