[zeromq-dev] XREQ/XREP messaging flow

[Pieter Hintjens]

Umut,

Please read the Guide until at least chapter 3, where it explains how
DEALER/ROUTER sockets work.

You're not using the ROUTER/XREP socket correctly, so messages are
being dropped.

-Pieter

On Sun, Oct 23, 2011 at 4:27 AM, Umut Aydin <aydinumut82 at gmail.com> wrote:
> Hello everyone,
> I'm trying to make a small game server demo with ZeroMQ and I have a problem
> with my XREQ/XREP sockets.
> http://pastebin.com/Ym0qxjgX
> As you can see in sample source code, it looks like basic sync pub/sub
> example of python binding. In example, server sends responses through
> publisher socket and it works. It's OK with my code too but I need to use
> server socket at least for one response.
> If you run my code you'll see that server socket can receive 'WhoAmI'
>  request and calls send method. To see that please cut 'print data' and
> paste it to the line right after 'if' condition.
> The problem here is that client socket cannot receive the response. If I use
> publisher socket instead of server to respond, then client can receive the
> response correctly. Of course you should change 'client.receive' to
> 'subscriber.receive' to perform that.
> I have all game-related classes completed and tested via PUB/SUB messaging
> but I cannot get that single response received by my XREQ socket.
> Do I miss something in my code? Any idea?
> By the way, right after solving that problem, I'll make subscriber and
> client loops work in different multiprocessing.Process
> I tried to implement that now and I couldn't get any response but I guess it
> was based on same problem.
> Thank you.
> -Umut
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