[FFmpeg-devel] [PATCH] UDP hangs with no input data

Jindrich Makovicka makovick
Tue Nov 11 15:20:47 CET 2008

On Tue, Nov 11, 2008 at 14:58, Ronald S. Bultje <rsbultje at gmail.com> wrote:
> Hi,
> On Tue, Nov 11, 2008 at 8:47 AM, Jindrich Makovicka <makovick at gmail.com> wrote:
>> when there are no incoming packets on the specified UDP address/port,
>> libavformat waits indefinitely, and can be only terminated using
>> SIGKILL. The attached patches add
>> 1) UDP receive timeout, which is 10 seconds by default, and adjustable
>> in the URL, and
> Can you do something that unifies tcp.c and udp.c behaviour? tcp.c
> uses interrupt_cb() (top of tcp_read()) and that callback can
> implement a timeout or interrupt signal handler (such as a cancel
> button in a UI) or whatever. udp.c might do something like that as
> well. there's better approaches, but the two should do the same.
> If you like the interrupt_cb() idea (in general), this could be moved
> to an instance vfunc callback instead of a global vfunc and/or it
> could be given some useful context arguments so we can actually use it
> in client code as well (object-based, not ust ffmpeg/ffplay) without
> having to access any global arguments at all (similar to av_log
> callbacks etc.).
> If you do it well, you don't have to edit code to add an interrupt
> handler or change the timeout time value or whatever, but you can just
> use the instance-specific callback function, implement it one line
> differently and you have a configurable timeout, inetrrupt handler et
> al at once.

Thanks for suggestion. New patch attached.

Jindrich Makovicka
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