[zeromq-dev] zmq poll failed

[Martin Sustrik]

Guo, Yanchao wrote:
> Thanks Martin, i missed that bit. It worked with that flag.
> 
> The following maybe a dumb question as I am new to socket programming. 
> What if between two poll calls, there are multiple messages arrive on a 
> tcp socket? How do I know the number of recv I need to issue?

Do a non-blocking recv:

s.recv (&msg, ZMQ_NOBLOCK);

It'll return a message when one is available or EAGAIN if it is not.

Martin