0MQ version 2.1.11 (Stable), released on 2011/12/18 =================================================== Bug fixes --------- * Fixed issue 290, zmq_poll was using system time instead of monotonic clock (Mika Fischer). * Fixed issue 281, crash on heavy socket creation - assertion failure in mutex.hpp:91. (Mika Fischer). * Fixed issue 273, O_CLOEXEC flag used in ip.cpp:192 is supported only on Linux kernels 2.6.27+ * Fixed issue 261, assertion failure in kqueue.cpp:76. * Fixed issue 269, faulty diagnostic code in 2.1.10. * Fixed issue 254, assertion failure at tcp_socket.cpp:229 on ENOTCONN. Changes ------- * Now builds properly on AIX 6.1 (AJ Lewis). * Builds using libdcekt on HP-UX (AJ Lewis). * New upstream OpenPGM maintenance release 5.1.118. * Enabled debugging on assertion failure on Windows (Paul Betts).
0MQ version 2.1.10 (Stable), released on 2011/10/03 =================================================== Bug fixes --------- * Fixed issue 140, SWAP failed with assertion failure in pipe.cpp:187 if the current directory was not writeable. Behavior now is to return -1 at zmq_setsockopt in this situation. * Fixed issue 207, assertion failure in zmq_connecter.cpp:48, when an invalid zmq_connect() string was used, or the hostname could not be resolved. The zmq_connect() call now returns -1 in both those cases. * Fixed issue 218, sockets not opened with SOCK_CLOEXEC, causing fork/exec to sit on sockets unnecessarily. * Fixed issue 250, build errors on Windows. * Fixed issue 252, assertion failure in req.cpp:87 and req.cpp:88. * Fixed issue 261, assertion failure in kqueue.cpp:76 on OS/X. 0MQ version 2.1.9 (Stable), released on 2011/08/29 ================================================== Bug fixes --------- * Fixed issue 240, assertion failure in pgm_socket.cpp:437. * Fixed issue 238, assertion failure in zmq.cpp:655, when zmq_poll is used on an empty set, on Windows. * Fixed issue 239, assertion failure in zmq.cpp:223, when ZMQ_SWAP was used with explicit identities and multiple SUB sockets. * Fixed issue 236, zmq_send() and zmq_recv() did not always return error conditions such as EFSM properly. This bug was introduced in version 2.1.8 by the backport of changes for issue 231. Building -------- * 0MQ support for Android added (Bill Roberts, Mikko Koppanen). 0MQ version 2.1.8 (RC), released on 2011/07/28 ============================================== Bug fixes --------- * Fixed issue 223, assertion failure in tcp_connecter.cpp:300 when connecting to a server that is on an unreachable network (errno is equal to ENETUNREACH). * Fixed issue 228, assertion failure at rep.cpp:88 when HWM was reached. * Fixed issue 231, assertion failure at mailbox.cpp:183 when too many pending socketpair operations were queued (major backport from 3.0). * Fixed issue 234, assertion failure at mailbox.cpp:77 when Ctrl-C was used (only affected git master following backport for 231). * Fixed issue 230, SIGPIPE killing servers when client disconnected, hit OS/X only. Note: this release was renamed "release candidate" due to issue 236, fixed in 2.1.9.
0MQ version 2.1.7 (Stable), released on 2011/05/12 ================================================== Bug fixes --------- * Fixed issue 191, message atomicity issue with PUB sockets (an old issue). * Fixed issue 199 (affected ROUTER/XREP sockets, an old issue). * Fixed issue 206, assertion failure in zmq.cpp:223, affected all sockets (bug was introduced in 2.1.6 as part of message validity checking). * Fixed issue 211, REP socket asserted if sent malformed envelope (old issue due to abuse of assertions for error checking). * Fixed issue 212, reconnect failing after resume from sleep on Windows (due to not handling WSAENETDOWN). * Properly handle WSAENETUNREACH on Windows (e.g. if client connects before server binds). Changes ------- * Runtime checking of socket and context validity, to catch e.g. using a socket after closing it, or passing an invalid pointer to context/socket methods. * Test cases moved off port 5555, which conflicts with other services. * Clarified zmq_poll man page that the resolution of the timeout is 1msec.
0MQ version 2.1.6 (Stable), released on 2011/04/26 ================================================== Bug fixes --------- * Fixed memory leak with threads on Windows. * Assert during SUB socket termination fixed. Changes ------- * Checks zmq_msg_t validity at each operation. * Inproc performance tests now work on Windows. * PGM wire format specification improved in zmq_pgm(7) * Added thread latency/throughput performance examples. * Added "--with-system-pgm" configure option to use already installed OpenPGM. 0MQ version 2.1.5 (Broken), released on 2011/04/20 ================================================== Note that this version contained a malformed patch and is not usable. It is not available for download, but is available in the git via the 2.1.5 tag. 0MQ version 2.1.4 (Stable), released on 2011/03/30 ================================================== Bug fixes --------- * Fix to OpenPGM which was asserting on small messages (Steven McCoy). Changes ------- * Upgraded OpenPGM to version 5.1.115 (Pieter Hintjens). * OpenPGM build changed to not install OpenPGM artifacts. 0MQ version 2.1.3 (Stable), released on 2011/03/21 ================================================== Bug fixes --------- * Fix to PUSH sockets, which would sometimes deliver tail frames of a multipart message to new subscribers (Martin Sustrik). * Fix to PUB sockets, which would sometimes deliver tail frames of a multipart message to new subscribers (Martin Sustrik). * Windows build was broken due to EPROTONOSUPPORT not being defined. This has now been fixed (Martin Sustrik). * Various fixes to make OpenVMS port work (Brett Cameron). * Corrected Reference Manual to note that ZMQ_LINGER socket option may be set at any time, not just before connecting/binding (Pieter Hintjens). * Fix to C++ binding to properly close sockets (Guido Goldstein). * Removed obsolete assert from pgm_socket.cpp (Martin Sustrik). Changes ------- * Removed stand-alone devices (/devices subdirectory) from distribution. These undocumented programs remain available in older packages (Pieter Hintjens). * OpenPGM default rate raised to 40mbps by default (Steven McCoy). * ZMQ_DEALER and ZMQ_ROUTER macros provided to ease upgrade to 0MQ/3.0. These are scheduled to replace ZMQ_XREQ and ZMQ_XREP (Pieter Hintjens). * Added man page for zmq_device(3) which was hereto undocumented (Pieter Hintjens). * Removed zmq_queue(3), zmq_forwarder(3), zmq_streamer(3) man pages (Pieter Hintjens). OpenPGM Integration ------------------- * Upgraded OpenPGM to version 5.1.114 (Steven McCoy, Mikko Koppanen). * Build system now calls OpenPGM build process directly, allowing easier future upgrades of OpenPGM (Mikko Koppanen). * Build system allows configuration with arbitrary versions of OpenPGM (./configure --with-pgm=libpgm-x.y.z) (Mikko Koppanen). * OpenPGM uses new PGM_ODATA_MAX_RTE controlling original data instead of PGM_TXW_MAX_RTE covering entire channel (Steven McCoy). Building -------- * 0MQ builds properly on FreeBSD (Mikko Koppanen). 0MQ version 2.1.2 (rc2), released on 2011/03/06 =============================================== Bug fixes --------- * 0MQ now correctly handles durable inproc sockets; previously it ignored explicit identities on inproc sockets. * Various memory leaks were fixed. * OpenPGM sender/receiver creation fixed. 0MQ version 2.1.1 (rc1), released on 2011/02/23 =============================================== New functionality ----------------- * New socket option ZMQ_RECONNECT_IVL_MAX added, allows for exponential back-off strategy when reconnecting. * New socket option ZMQ_RECOVERY_IVL_MSEC added, as a fine-grained counterpart to ZMQ_RECOVERY_IVL (for multicast transports). * If memory is exhausted, 0MQ warns with an explicit message before aborting the process. * Size of inproc HWM and SWAP is sum of peers' HWMs and SWAPs (Douglas Greager, Martin Sustrik). Bug fixes --------- * 0MQ no longer asserts in mailbox.cpp when multiple peers connect with the same identity. * 0MQ no longer asserts when rejecting an oversized message. * 0MQ no longer asserts in pipe.cpp when the swap fills up. * zmq_poll now works correctly with an empty poll set. * Many more. Building -------- * 0MQ now builds correctly on CentOS, Debian 6, and SunOS/gcc3. * Added WithOpenPGM configuration into MSVC builds. Known issues ------------ * OpenPGM integration is still not fully stable. 0MQ version 2.1.0 (Beta), released on 2010/12/01 ================================================ New functionality ----------------- * New semantics for zmq_close () and zmq_term () ensure that all messages are sent before the application terminates. This behaviour may be modified using the new ZMQ_LINGER socket option; for further details refer to the reference manual. * The new socket options ZMQ_FD and ZMQ_EVENTS provide a way to integrate 0MQ sockets into existing poll/event loops. * Sockets may now be migrated between OS threads, as long as the application ensures that a full memory barrier is issued. * The 0MQ ABI exported by libzmq.so has been formalised; DSO symbol visibility is used on supported platforms to ensure that only public ABI symbols are exported. The library ABI version has been set to 1.0.0 for this release. * OpenPGM has been updated to version 5.0.92. This version no longer depends on GLIB, and integration with 0MQ should be much improved. * zmq_poll() now honors timeouts precisely, and no longer returns if no events are signaled. * Blocking calls now return EINTR if interrupted by the delivery of a signal; this also means that language bindings which previously had problems with handling SIGINT/^C should now work correctly. * The ZMQ_TYPE socket option was added; this allows retrieval of the socket type after creation. * Added a ZMQ_VERSION macro to zmq.h for compile-time API version detection. * The ZMQ_RECONNECT_IVL and ZMQ_BACKLOG socket options have been added. Bug fixes --------- * Forwarder and streamer devices now handle multi-part messages correctly. * 0MQ no longer asserts when malformed data is received on the wire. * 0MQ internal timers now work correctly if the TSC jumps backwards. * The internal signalling functionality (mailbox) has been improved to automatically resize socket buffers on POSIX systems. * Many more. Building -------- * 0MQ now builds correctly with many more non-GCC compilers (Sun Studio, Intel ICC, CLang). * AIX and HP-UX builds should work now. * FD_SETSIZE has been set to 1024 by default for MSVC builds. * Windows builds using GCC (MinGW) now work out of the box. Distribution ------------ * A simple framework for regression tests has been added, along with a few basic self-tests. The tests can be run using "make check".
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.