Re: Recv blocks forever after close

[Dan Kegel]

Ignasi Villagrasa wrote:
> I'm developing a multi-threaded server based application and I've 
> noticed a problem when closing a socket file descriptor from a thread 
> and the corresponding recv socket function is running in other thread. 
> Instead of returning, as documented, the function remains locked.
>
> I'm using Red Hat 7.2, and my program uses pthreads.
>
> I have found the same problem in
>
> http://sources.redhat.com/ml/bug-glibc/2001-05/msg00089.html
>
> two years ago. But this question has no reply.

My impression is that this is by design in Linux.
See for example
http://marc.theaimsgroup.com/?l=linux-kernel&m=104825031912688&w=2

Try calling shutdown() before close(), that will probably fix it for you.
- Dan