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Re: recv() timeout problem

On Jul  4 19:34, David Stacey wrote:
> Please find attached a short programme that demonstrates a problem
> I'm having with recv() timeouts. Under Fedora 19 x64, the test
> programme times out after three seconds (which is the desired
> behaviour). However, when run from Cygwin, the call to recv() never
> exits.
> I am using the latest snapshot (2013-07-03) in 32-bit Cygwin. OS is
> Windows 7 Ultimate x64 SP1.
> Many thanks in advance for your help,

Unfortunately that won't work at the moment.

The underlying implementation of recv is nonblocking.  A blocking
Windows recv call is noninterruptible, unfortunately (at least up to
Windows 2003), so this was necessary to handle signals or

Due to its nonblocking nature under the hood, this doesn't support
SO_RCVTIMEO and SO_SNDTIMEO and, surprisingly, we never had a complaint
about that, despite its age.

I can't promise a quick solution, but I put implementing handling of
SO_RCVTIMEO and SO_SNDTIMEO in recv/send on my TODO list.  Of course,
patches are welcome, too.

For the time being, I suggest to use select or poll with timeout


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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