Re: [Xenomai] Are concurrent writes to XDDP sockets allowed ?

[Philippe Gerum <rpm@xenomai.org>]

On 05/21/2015 08:34 AM, Thierry Bultel wrote:
> Hi,
> In an application, we have one regular thread listening on an RTP device,
> and 2 realtime threads that concurrently write data in the XDDP socket
> backend.
> We use the POSIX skin.
> 
> Sometimes, the regular thread gets its blocking read() call just return 0.
> That never happens with the classic "one reader, one writer" case.
> 
> Also, we notice that the 'return 0' case occurrence is not the same,
> depending
> on the fact that the realtime task uses 'write' instead of 'sendto'
> (more occurrences with 'sendto')
> 

There is no restriction with respect to concurrent sending to such socket.

Knowing about the Xenomai release number, and a simple test code that
actually illustrates the intended usage and ideally reproduces the issue
would help.

-- 
Philippe.