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1) VSM - you cannot hand out the 'data' address as it was not allocated on the heap 2) for other messages the 'data' address cannot be handed out either, as it not the address originally returned by malloc and hence cannot be passed to 'free'. see msg.cpp u.lmsg.content = (content_t*) malloc (sizeof (content_t) + size_); .... u.lmsg.content->data = u.lmsg.content + 1; So the function is changed to always malloc a data buffer and copy the data into it. There is a possible optimisation using memmove for the non-VSM case but that is not done yet.
Welcome ------- The 0MQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialised messaging middleware products. 0MQ sockets provide an abstraction of asynchronous message queues, multiple messaging patterns, message filtering (subscriptions), seamless access to multiple transport protocols and more. Building and installation ------------------------- See the INSTALL file included with the distribution. Resources --------- Extensive documentation is provided with the distribution. Refer to doc/zmq.html, or "man zmq" after you have installed 0MQ on your system. Website: http://www.zeromq.org/ Development mailing list: zeromq-dev@lists.zeromq.org Announcements mailing list: zeromq-announce@lists.zeromq.org Git repository: http://github.com/zeromq/libzmq 0MQ developers can also be found on the IRC channel #zeromq, on the Freenode network (irc.freenode.net). Copying ------- Free use of this software is granted under the terms of the GNU Lesser General Public License (LGPL). For details see the files `COPYING` and `COPYING.LESSER` included with the 0MQ distribution.