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This patch adds a sockopt ZMQ_DELAY_ATTACH_ON_CONNECT, which if set to 1 will attempt to preempt this behavior. It does this by extending the use of the session_base to include in the outbound as well as the inbound pipe, and only associates the pipe with the socket once it receives the connected callback via a process_attach message. This works, and a test has been added to show so, but may introduce unexpected complications. The shutdown logic in this class has become marginally more awkward because of this, requiring the session to serve as the sink for both pipes if shutdown occurs with a still-connecting pipe in place. It is also possible there could be issues around flushing the messages, but as I could not directly think how to create such an issue I have not written any code with regards to that. The documentation has been updated to reflect the change, but please do check over the code and test and review.
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.