[zeromq-dev] zmq_recv question

Pieter Hintjens ph at imatix.com
Thu Mar 27 08:05:19 CET 2014

Hi Dave,

CZMQ uses uint for array indices; equivalent to unsigned int, but more
convenient in code. We define it in czmq_prelude.h on systems that do
not define it by default.

So you're compiling on a system that does not define uint. Could you
take a look at czmq_prelude.h around line 420, and see if you can add
the necessary code for your compiler/OS?

If you get that working, a pull request with the patch would be very welcome.


On Wed, Mar 26, 2014 at 10:31 PM, David Cheney <dcheney at peaxy.net> wrote:
> I've downloaded, built, and installed the czmq from
> http://download.zeromq.org/czmq-2.1.0.tar.gz
> When I attempt to use it I encounter this error:
> In file included from /usr/local/include/czmq.h:68, from src/tcp_ping.c:8:
> /usr/local/include/zrex.h:78: error: expected declaration specifiers or
> '...' before 'uint'
> scons: *** [obj/Debug/tcp_ping.o] Error 1
> scons: building terminated because of errors.
> /usr/local/include/zrex.h:78 makes use of uint, which apparently is
> undefined? Using "unsigned" fixed the problem for me.
> Let me know if you'd like this posted at the issue tracker.
> Dave
> On Mon, Mar 24, 2014 at 10:21 PM, Joe Lin <jlin at peaxy.net> wrote:
>> Hi,
>> Got a question regarding this function
>> int zmq_recv (void *socket, void *buf, size_t len, int flags);
>> According to the instruction:
>> 'The zmq_recv() function shall receive a message from the socket
>> referenced by thesocket argument and store it in the buffer referenced by
>> the buf argument. Any bytes exceeding the length specified by the len
>> argument shall be truncated'
>> I would call this function several time in a row for a multi-frame
>> message. My question is that if a frame exceeds the specified 'len'
>> argument, do I get the data for the next frame or do I get the remaining
>> data of the current frame?
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