[zeromq-dev] Raw protocol spec for REQ/REP socket?

[Gary Shi]

I noticed the source code called xreq_t::xsend and xrep_t::xrecv for a
empty message with ZMQ_MSG_MORE flag turned on, for the first message.
And the comment mentioned "backtrace stack", but I have no idea about
it.

And what about the first \x01\0x00 message?

On Mon, Apr 25, 2011 at 6:33 PM, Gary Shi <garyshi at gmail.com> wrote:
> I want to implement part of the ZeroMQ protocol so I can write
> programs interact with it,
> on platforms where ZeroMQ is not available. And I found REQ/REP
> packets different with
> 2/SPB: both side make a first connection, sending 1 packet of
> \x01\x00; close it then send
> REQ/REP messages, but all messages are prefixed by \x01\x01. What's
> the use of them?
> I also checked PUB messages, they're not prefixed. Is it safe to just
> append \x01\x01 in
> front of the SPB messages to talk to a ZeroMQ REP server?
>
> --
> regards,
> Gary Shi
>



-- 
regards,
Gary Shi