version 4.2.3 stable:
* API change: previously ZMQ_POLLOUT on a ZMQ_ROUTER socket returned always
true due to how the type works. When ZMQ_ROUTER_MANDATORY is set, sending
fails when the peer is not available, but ZMQ_POLLOUT always returns true
anyway, which does not make sense. Now when ZMQ_ROUTER_MANDATORY is set,
ZMQ_POLLOUT on a ZMQ_ROUTER will return true only if at least one peer is
available.
Given ZMQ_POLLOUT with ZMQ_ROUTER was not usable at all previously, we do
not consider this a breakage warranting a major or minor version increase.
* ZMQ_IDENTITY has been renamed to ZMQ_ROUTING_ID and ZMQ_CONNECT_RID has been
renamed to ZMQ_CONNTECT_ROUTING_ID to disambiguate. ZMQ_IDENTITY and
ZMQ_CONNECT_RID are still available to keep backward compatibility, and will
be removed in a future release after further advance notice.
* DRAFT API change: zmq_poller_wait, zmq_poller_wait_all and zmq_poller_poll
have been changed to be inline with other existing APIs that have a timeout
to return EAGAIN instead of ETIMEDOUT as the errno value.
* Existing non-DRAFT socket types ZMQ_REP/REQ, ZMQ_ROUTER/DEALER and
ZMQPUB/SUB, that were previously declared deprecated, have been reinstated
as stable and supported.
* Tweetnacl: add support for, and use preferably if available, getrandom() as
a simpler and less error-prone alternative to /dev/urandom on OSes where it
is available (eg: Linux 3.18 with glibc 2.25).
* Curve: all remaining traces of debug output to console are now removed, and
new DRAFT events are available to properly debug CURVE, PLAIN, GSSAPI and
ZAP events and failures. See below for details on the new events.
* New DRAFT (see NEWS for 4.2.0) socket options:
- ZMQ_GSSAPI_PRINCIPAL_NAMETYPE and ZMQ_GSSAPI_SERVICE_PRINCIPAL_NAMETYPE, for
the corresponding GSSAPI features. Additional definitions for principal
name types:
- ZMQ_GSSAPI_NT_HOSTBASED
- ZMQ_GSSAPI_NT_USER_NAME
- ZMQ_GSSAPI_NT_KRB5_PRINCIPAL
See doc/zmq_gssapi.txt for details.
- ZMQ_BINDTODEVICE (Linux only), which will bind the socket(s) to the
specified interface. Allows to use Linux VRF, see:
https://www.kernel.org/doc/Documentation/networking/vrf.txt
NOTE: requires the program to be ran as root OR with CAP_NET_RAW
- ZMQ_ZAP_ENFORCE_DOMAIN, enables strict RFC 27 compatibility mode and makes
the ZAP Domain mandatory when using security. See:
https://rfc.zeromq.org/spec:27/ZAP
See doc/zmq_setsockopt.txt and doc/zmq_getsockopt.txt for details.
* New DRAFT (see NEWS for 4.2.0) context options:
- ZMQ_THREAD_AFFINITY_CPU_ADD and ZMQ_THREAD_AFFINITY_CPU_REMOVE (Posix only),
to add and remove CPUs to the affinity set of the I/O threads. Useful to pin
the background threads to specific CPUs.
- ZMQ_THREAD_NAME_PREFIX (Posix only), to add a specific integer prefix to the
background threads names, to easily identify them for debugging purposes.
See doc/zmq_ctx_set.txt and doc/zmq_ctx_get.txt for details.
* New DRAFT (see NEWS for 4.2.0) message property name definitions to facilitate
the use of zmq_msg_gets:
- ZMQ_MSG_PROPERTY_ROUTING_ID
- ZMQ_MSG_PROPERTY_SOCKET_TYPE
- ZMQ_MSG_PROPERTY_USER_ID
- ZMQ_MSG_PROPERTY_PEER_ADDRESS
See doc/zmq_msg_gets.txt for details.
* New DRAFT (see NEWS for 4.2.0) API zmq_socket_get_peer_state, to be used to
query the state of a specific peer (via routing-id) of a ZMQ_ROUTER socket.
* New DRAFT (see NEWS for 4.2.0) Socket Monitor events:
- ZMQ_EVENT_HANDSHAKE_FAILED_NO_DETAIL, unknown system error and returns errno
- ZMQ_EVENT_HANDSHAKE_SUCCEEDED, handshake was successful
- ZMQ_EVENT_HANDSHAKE_FAILED_PROTOCOL, protocol errors between peers or server
and ZAP handler. Returns one of ZMQ_PROTOCOL_ERROR_* - see manpage for list
- ZMQ_EVENT_HANDSHAKE_FAILED_AUTH, failed authentication, returns ZAP status
These events trigger when the ZMTP security mechanism handshake is
completed or failed. See doc/zmq_socket_monitor.txt for more information.
* New DRAFT (see NEWS for 4.2.0) zmq_proxy_steerable command 'STATISTICS' to
retrieve stats about the amount of messages and bytes sent and received by
the proxy. See doc/zmq_proxy_steerable.txt for more information.
* Add new autoconf --disable-libunwind option to stop building with libunwind
even if it is available.
* Add new autoconf --disable-Werror option to avoid building with the Werror
flag.
* Use pkg-config as the first method for finding and building with external
optional dependencies such as libnorm, libpgm and gssapi.
* On Posix platform where the feature is available, name the ZMQ background
threads to simplify debugging: "ZMQbg/<num_thread>"
* Improve performance of zmq_poller_* (and zmq_poll and zmq_proxy when building
with DRAFT APIs enabled).
* The TCP unit tests have been refactored to bind and connect to random ports
rather than hard-coded ones, to allow running tests in parallel.
There are 6 exceptions where it is necessary to use an hard-coded port to
test specific code paths that would not be exercised when binding to a
wildcard port. These are listed in tests/testutil.hpp so that distributions
can easily patch them if they wish to and so that they can be unique across
all the tests, allowing parallel runs.
The IPC unit tests have been changed as well to use unique socket file names
per test, where before there were some clashes.
* Fixed 2349 - fix building with libsodium when using CMake
* Fixed 2334 - do not assert when tuning socket options fails due to network
errors, but simply retry again when connecting or send a socket monitor
ZMQ_EVENT_ACCEPT_FAILED event when binding
* Fixed 2341 - fix source files path in VS2015 solution
* Fixed 2344 - Note that on Windows with VS2012 it is mandatory to increase
the default stack size to at least 2MB
* Fixed 2348 - ZMQ_ROUTER send with ZMQ_ROUTER_MANDATORY can be stuck in case of
network problem
* Fixed 2358 - occasional abort on zmq_connect on Windows
* Fixed 2370 - zmq_curve_keypair should return an error on failure rather
than ignoring them and always returning 0
* Fixed 2452 - __STDC_LIMIT_MACROS before precompiled headers causes VC++
warning
* Fixed 2457 - fix building with libsodium in Visual Studio solutions
* Fixed 2466 - add const qualifier to internal and public API that does not
modify parameters
* Fixed 2471 - do more checks for OOM conditions when dynamic allocations is
used
* Fixed 2476 - assertion causes abort after ZAP stop at shutdown
* Fixed 2479 - improve zmq_poller performance on Windows
* Fixed 2481 - potential memory leaks due to ZMTP handshake failures
* Fixed 2531 - ZMQ_GSSAPI_PRINCIPAL sockopt has no effect on client side
* Fixed 2535 - add BUILD_SHARED and BUILD_STATIC options to CMake, both on by
default, to toggle shared and static library builds
* Fixed 2537 - use SYSTEM_CLOCK on OSX and CLOCK_MONOTONIC elsewhere for
internal timers to avoid races
* Fixed 2540 - new zmq_poller used by zmq_poll without DRAFTs
* Fixed 2552 - Fix WITH_DOC CMake build to avoid checking for asciidoc if the
option is disabled
* Fixed 2567 - Memory leak in REP socket handling
* Fixed 2579 - Compilation issue on Windows with CMake + ninja
* Fixed 2588 - SIGBUS under 64-bit SunOS Sparc
* Fixed 2590 - crash when using ZMQ_IMMEDIATE and ZMQ_LINGER to non-zero
* Fixed 2601 - XPUB_MANUAL subscriptions not removed on peer term
* Fixed 2602 - intermittent memory leak for ZMQ_REQ/REP send/recv
* Fixed 2608 - CURVE server (connect) fails when client rebinds
* Fixed 2610 - print backtraces in mutual exclusion to avoid mixing
different traces
* Fixed 2621 - add missing CMake files to distributable tarball
* Fixed 2630 - improve compatibility with OpenBSD w.r.t. IPV6_V6ONLY
* Fixed 2638 - note in INSTALL that when using Windows builds on Linux with
Wine it is necessary to increase the minimum TCP buffers
* Fixed 2632 - Fix file descriptor leak when using Tweetnacl (internal NACL
implementation) instead of Libsodium, and fix race condition when using
multiple ZMQ contexts with Tweetnacl
* Fixed 2681 - Possible buffer overflow in CURVE mechanism handshake.
NOTE: this was protected by an assert previously, so there is no security
risk.
* Fixed 2704 - test_sockopt_hwm fails occasionally on Windows
* Fixed 2701 - pgm build via cmake doesn't link libzmq with libpgm
* Fixed 2711 - ZAP handler communication errors should be handled consistently
* Fixed 2723 - assertion in src\select.cpp:111 or hang on zmq_ctx_destroy on
Windows
* Fixed 2728 - fix support O_CLOEXEC when building with CMake
* Fixed 2761 - improve compatibility with TrueOS (FreeBSD 12)
* Fixed 2764 - do not unlink IPC socket files when closing a socket to avoid
race conditions
* Fixed 2770 - support lcov 1.13 and newer
* Fixed 2787 - add libiphlpapi to PKGCFG_LIBS_PRIVATE for static mingw builds
* Fixed 2788 - document that adding -DZMQ_STATIC is required for Windows
static builds with Mingw
* Fixed 2789 - description of zmq_atomic_counter_value return value is cloned
from zmq_atomic_counter_new
* Fixed 2791 - fix building with DRAFT APIs on CentOS 6
* Fixed 2794 - router_t methods should not allocate memory for lookup in
outpipes
* Fixed 2809 - optimize select() usage on Windows
* Fixed 2816 - add CMake and autoconf check for accept4, as it is not
available on old Linux releases, and fallback to accept + FD_CLOEXEC
* Fixed 2824 - ZMQ_REQ socket does not report ZMQ_POLLOUT when ZMQ_REQ_RELAXED
is set
* Fixed 2827 - add support for Haiku
* Fixed 2840 - fix building with VS2008
* Fixed 2845 - correct the ZMQ_LINGER documentation to accurately reflect that
the default value is -1 (infinite). It never was 30 second in any released
version, it was only changed briefly and then changed back, but the manpage
was not reverted.
* Fixed 2861 - CMake/MSVC: export ZMQ_STATIC when needed.
0MQ version 4.2.1 stable, released on 2016/12/31
=============================================
* New DRAFT (see NEWS for 4.2.0) Socket Monitor events:
- ZMQ_EVENT_HANDSHAKE_SUCCEED
- ZMQ_EVENT_HANDSHAKE_FAILED
These events trigger when the ZMTP security mechanism handshake is
completed. See doc/zmq_socket_monitor.txt for more information.
* New DRAFT (see NEWS for 4.2.0) Context options:
- ZMQ_MSG_T_SIZE
See doc/zmq_ctx_get.txt for more information.
* Fixed#2268 - improved compatibility with mingw32
* Fixed#2254 - ZMQ_PUB compatibility with libzmq 2.x broken
* Fixed#2245 - added support for VS2017, Windows SDK 10.0.14393.0, toolset v141
* Fixed#2242 - file descriptors leaks on fork+exec
* Fixed#2239 - retired poller item crash from reaper thread
* Fixed#2234 - improved compatibility with AIX 7.1
* Fixed#2225 - cannot pick select for poller
* Fixed#2217 - CMake build uses library version as the ABI version
* Fixed#2208 - added support for ZMQ_TOS on IPv6
* Fixed#2200 - no documentation for ZMQ_SOCKS_PROXY
* Fixed#2199 - no documentation for zmq_curve_public
* Fixed#2196 - fixed build and runtime errors on kFreeBSD
0MQ version 4.2.0 stable, released on 2016/11/04
=============================================
* For Pieter. Thanks for making all of this possible.
"Tell them I was a writer.
A maker of software.
A humanist. A father.
And many things.
But above all, a writer.
Thank You. :)"
- Pieter Hintjens
* This release introduces new APIs, but it is ABI compatible with
libzmq 4.1.2 and up.
* Note for ARM and SPARC users: an alignment problem in zmq_msg_t that could in
some cases and on some CPUs cause a SIGBUS error was solved, but it requires
a rebuild of your application against the 4.2.0 version of include/zmq.h.
To clarify, this change does not affect the internals of the library but only
the public definition of zmq_msg_t, so there is no ABI incompatibility.
* Security with Curve is now available by default thanks to Tweetnacl sources:
https://tweetnacl.cr.yp.to/index.html
Libsodium is still fully supported but has to be enabled with the build flag
--with-libsodium. Distribution and package maintainers are encouraged to use
libsodium so that the security implementation can be audited and maintained
separately.
* New Context options:
- ZMQ_MAX_MSGSZ
- ZMQ_BLOCKY
See doc/zmq_ctx_set.txt and doc/zmq_ctx_get.txt for details.
* New Socket options:
- ZMQ_HANDSHAKE_IVL
- ZMQ_SOCKS_PROXY
- ZMQ_XPUB_NODROP
- ZMQ_XPUB_MANUAL
- ZMQ_XPUB_WELCOME_MSG
- ZMQ_STREAM_NOTIFY
- ZMQ_INVERT_MATCHING
- ZMQ_HEARTBEAT_IVL
- ZMQ_HEARTBEAT_TTL
- ZMQ_HEARTBEAT_TIMEOUT
- ZMQ_XPUB_VERBOSER
- ZMQ_CONNECT_TIMEOUT
- ZMQ_TCP_MAXRT
- ZMQ_THREAD_SAFE
- ZMQ_MULTICAST_MAXTPDU
- ZMQ_VMCI_BUFFER_SIZE
- ZMQ_VMCI_BUFFER_MIN_SIZE
- ZMQ_VMCI_BUFFER_MAX_SIZE
- ZMQ_VMCI_CONNECT_TIMEOUT
- ZMQ_USE_FD
See doc/zmq_setsockopt.txt and doc/zmq_getsockopt.txt for details.
* New CURVE helper function to derive z85 public key from secret key:
zmq_curve_public
* New cross-platform atomic counter helper functions:
zmq_atomic_counter_new, zmq_atomic_counter_set, zmq_atomic_counter_inc,
zmq_atomic_counter_dec, zmq_atomic_counter_value, zmq_atomic_counter_destroy
See doc/zmq_atomic_*.txt for details.
* New DRAFT APIs early-release mechanism. New APIs will be introduced early
in public releases, and until they are stabilized and guaranteed not to
change anymore they will be unavailable unless the new build flag
--enable-drafts is used. This will allow developers and early adopters to
test new APIs before they are finalized.
NOTE: as the name implies, NO GUARANTEE is made on the stability of these APIs.
They might change or disappear entirely. Distributions are recommended NOT to
build with them.
New socket types have been introduced in DRAFT state:
ZMQ_SERVER, ZMQ_CLIENT, ZMQ_RADIO, ZMQ_DISH, ZMQ_GATHER, ZMQ_SCATTER,
ZMQ_DGRAM
All these sockets are THREAD SAFE, unlike the existing socket types. They do
NOT support multipart messages (ZMQ_SNDMORE/ZMQ_RCVMORE).
ZMQ_RADIO, ZMQ_DISH and ZMQ_DGRAM also support UDP as transport,
both unicast and multicast. See doc/zmq_udp.txt for more details.
New methods to support the new socket types functionality:
zmq_join, zmq_leave, zmq_msg_set_routing_id, zmq_msg_routing_id,
zmq_msg_set_group, zmq_msg_group
See doc/zmq_socket.txt for more details.
New poller mechanism and APIs have been introduced in DRAFT state:
zmq_poller_new, zmq_poller_destroy, zmq_poller_add, zmq_poller_modify,
zmq_poller_remove, zmq_poller_wait, zmq_poller_wait_all, zmq_poller_add_fd
zmq_poller_modify_fd, zmq_poller_remove_fd
and a new supporting struct typedef: zmq_poller_event_t
They support existing socket type, new thread-safe socket types and file
descriptors (cross-platform).
Documentation will be made available in the future before these APIs are declared
stable.
New cross-platform timers helper functions have been introduced in DRAFT state:
zmq_timers_new, zmq_timers_destroy, zmq_timers_add, zmq_timers_cancel,
zmq_timers_set_interval, zmq_timers_reset, zmq_timers_timeout,
zmq_timers_execute
and a new supporting callback typedef: zmq_timer_fn
* Many, many bug fixes. The most important fixes are backported and captured in the
4.1.x and 4.0.x changelogs.
0MQ version 4.2.0 rc1, released on 2016/11/01
=============================================
* Many changes, see ChangeLog.
0MQ version 4.1.6 stable, released on 2016/11/01
================================================
* Fixed#2051 - getifaddrs can fail with ECONNREFUSED
* Fixed#2091 - testutil.hpp fails to build on Windows XP
* Fixed#2096 - add tests/CMakeLists.in and version.rc.in to dist tar
* Fixed#2107 - zmq_connect with IPv6 "source:port;dest:port" broken
* Fixed#2117 - ctx_term assert with inproc zmq_router connect-before-bind
* Fixed#2158 - Socket monitor uses internal Pair from multiple threads
* Fixed#2161 - messages dropped due to HWM race
* Fixed#1325 - alignment issue with zmq_msg_t causes SIGBUS on SPARC and ARM
0MQ version 4.1.5 stable, released on 2016/06/17
================================================
* Fixed#1673 - CMake on Windows put PDB in wrong directory.
* Fixed#1723 - Family is not set when resolving NIC on Android.
* Fixed#1608 - Windows 7 TCP slow start issue.
* Fixed#1806 - uninitialised read in curve getsockopt.
* Fixed#1807 - build broken with GCC 6.
* Fixed#1831 - potential assertion failure with latest libsodium.
* Fixed#1850 - detection issues with tweetnacl/libsodium.
* Fixed#1877 - Avoid terminating connections prematurely
* Fixed#1887 - zmq_bind IPv4 fallback still tries IPv6
* Fixed#1866 - fails to build on SunOS 5.10 / Solaris 10
* Fixed#919 - ZMQ_LINGER (related to #1877)
* Fixed#114 - cannot unbind with same endpoint with IPv6 enabled.
* Fixed#1952 - CMake scripts not part of release tarballs
* Fixed#1542 - Fix a crash on Windows when port 5905 is in use.
* Fixed#2021 - Fix building on sparc32.
Pkgsrc changes:
* Adapt PLIST
Upstream changes:
0MQ version 4.1.3 stable, released on 2015/08/17
* Fixed#1532 - getsockopt ZMQ_RCVMORE now resets all bits instead of only 32
* Fixed#1445 - zmq::socket_base_t::connect fails on tcp ipv6 address
0MQ version 4.1.2 stable, released on 2015/06/15
* Added explicit reference to static link exception in every source file.
* Bumped ABI version to 5:0:0 since 4.1.x changed the ABI.
* Fixed STDINT event interface macros to work with CZMQ 3.0.
* Fixed installation of man pages when BUILD_DOC is not set.
* Fixed#1428 - regression on single-socket proxies.
0MQ version 4.1.1 stable, released on 2015/06/02
* Fixed#1208 - fix recursion in automake packaging.
* Fixed#1224 - crash when processing empty unsubscribe message.
* Fixed#1213 - properties files were missing from source packages.
* Fixed#1273 - V3 protocol handler vulnerable to downgrade attacks.
* Fixed#1347 - lack way to get peer address.
* Fixed#1362 - SUB socket sometimes fails to resubscribe properly.
* Fixed#1377, #1144 - failed with WSANOTINITIALISED in some cases.
* Fixed#1389 - PUB, PUSH sockets had slow memory leak.
* Fixed#1382 - zmq_proxy did not terminate if there were no readers.
0MQ version 4.0.8 stable, released on 2015/07/xx
* Fixed LIBZMQ-949 - zmq_unbind fails for inproc and wildcard endpoints
0MQ version 4.0.7 stable, released on 2015/06/15
* Fixed#1428 - regression on single-socket proxies.
0MQ version 4.0.6 stable, released on 2015/06/02
* Fixed#1273 - V3 protocol handler vulnerable to downgrade attacks.
* Fixed#1362 - SUB socket sometimes fails to resubscribe properly.
* Fixed#1377, #1144 - failed with WSANOTINITIALISED in some cases.
* Fixed#1389 - PUB, PUSH sockets had slow memory leak.
* Fixed#1382 - zmq_proxy did not terminate if there were no readers.
0MQ version 4.0.5 stable, released on 2014/10/14
================================================
* Fixed#1191; CURVE mechanism does not verify short term nonces.
* Fixed#1190; stream_engine is vulnerable to downgrade attacks.
* Fixed#1088; assertion failure for WSAENOTSOCK on Windows.
* Fixed#1015; race condition while connecting inproc sockets.
* Fixed#994; bump so library number to 4.0.0
* Fixed#939, assertion failed: !more (fq.cpp:99) after many ZAP requests.
* Fixed#872; lost first part of message over inproc://.
* Fixed#797, keep-alive on Windows.
0MQ version 4.0.3 stable, released on 2013/11/24
================================================
Bug Fixes
---------
* Fixed test_many_sockets case, which failed when process socket limit
was 1024.
0MQ version 4.0.2 stable, released on 2013/11/24
================================================
Bug Fixes
---------
* Fixed LIBZMQ-583 - improved low-res timer for Windows
* Fixed LIBZMQ-578 - z85_decode was extremely slow
* Fixed LIBZMQ-577 - fault in man pages.
* Fixed LIBZMQ-574 - assertion failure when ran out of system file handles
* Fixed LIBZMQ-571 - test_stream failing in some cases
* Fixed LIBZMQ-569 - Socket server crashes with random client data and when
talking to 2.2 versions
* Fixed LIBZMQ-39 - Bad file descriptor during shutdown
* Pulled expected failing test_linger.cpp from release
* Reduced pause time in tests to allow "make check" to run faster
0MQ version 4.0.1 stable, released on 2013/10/08
================================================
Changes
-------
* Updated CURVE mechanism to track revised RFC 27 (INITIATE vouch).
The INITIATE command vouch box is Box[C',S](C->S') instead of
Box[C'](C->S), to reduce the risk of client impersonation, as per
https://codesinchaos.wordpress.com/2012/09/09/curvecp-1/.
* Fixed LIBZMQ-567, adding abstract namespaces for IPC sockets on Linux.
Converts an initial strudel or "at sign" (@) in the Unix socket path to
a NULL character ('\0') indicating that the socket uses the abstract
namespace instead of the filesystem namespace. For instance, binding a
socket to 'ipc://@/tmp/tester' will not create a file associated with
the socket whereas binding to 'ipc:///tmp/tester' will create the file
/tmp/tester. See issue 567 for more information.
* Added zmq_z85_encode and zmq_z85_decode to core libzmq API.
* Added zmq_curve_keypair to core libzmq API.
* Bumped library ABI version to 4:0:1.
Bug fixes
---------
* Fixed some build/test errors on OS/X + Clang++.
* Fixed LIBZMQ-565, typo in code.
* Fixed LIBZMQ-566, dealer-to-router connections sometimes failing.
* Fixed builds for AIX, MSVC 2008, OS/X with clang++, Solaris.
* Improved CURVE handshake error handling.
0MQ version 4.0.0 (RC1), released on 2013/09/20
===============================================
Major changes
-------------
* New wire level protocol, ZMTP/3.0, see http://rfc.zeromq.org/spec:23.
Does not yet implement the SUBSCRIBE, CANCEL, PING, and PONG commands.
* New security framework, from plain user+password to strong encryption,
see section below. See http://hintjens.com/blog:49 for a tutorial.
* New ZMQ_STREAM socket type for working as a TCP client or server. See:
tests/test_stream.cpp.
Improvements
------------
* You can now connect to an inproc:// endpoint that does not already
exist. This means inproc:// no longer needs careful set-up, but it may
break code that relied on the old behaviour. See:
tests/test_inproc_connect.cpp.
* Libzmq now checks socket types at connection time, so that trying to
connect a 'wrong' socket type will fail.
* New zmq_ctx_shutdown API method will shutdown a context and send ETERM
to blocking calls, without blocking. Use zmq_ctx_term to finalise the
process.
* The regression test suite has been significantly extended and improved.
* Contexts can now be terminated in forked child processes. See:
tests/test_fork.cpp.
* zmq_disconnect now respects the linger setting on sockets.
* New zmq_send_const API method to send constant data (without copying).
See: tests/test_inproc_connect.cpp.
* Added CMake support for static libraries.
* Added test cases for socket semantics as defined in RFCs 28, 29, 30, 31.
See: tests/test_spec_*.cpp.
* New socket option, ZMQ_PROBE_ROUTER triggers an empty message on connect.
See: tests/test_probe_router.cpp.
* New socket option, ZMQ_REQ_CORRELATE allows for correlation of replies
from a REP socket. See: tests/test_req_correlate.cpp.
* New socket option, ZMQ_REQ_RELAXED, lets you disable the state machine
on a REQ socket, so you can send multiple requests without waiting for
replies, and without getting an EFSM error. See:
tests/test_req_relaxed.cpp.
* New socket option, ZMQ_CONFLATE restricts the outgoing and incoming
socket buffers to a single message. See: tests/test_conflate.cpp.
Deprecated Options
------------------
* ZMQ_IPV4ONLY deprecated and renamed to ZMQ_IPV6 so that options are
consistently "off" by default.
* ZMQ_DELAY_ATTACH_ON_CONNECT deprecated, and renamed to ZMQ_IMMEDIATE.
See: tests/test_immediate.cpp.
Security Framework
------------------
Based on new ZMTP wire level protocol that negotiates a security
"mechanism" between client and server before exchanging any other data.
Security mechanisms are extensible. ZMTP defines three by default:
* NULL - classic ZeroMQ, with no authentication. See
http://rfc.zeromq.org/spec:23.
* PLAIN - plain-text username + password authentication. See
http://rfc.zeromq.org/spec:24.
* CURVE - secure authentication and encryption based on elliptic curve
cryptography, using the Curve25519 algorithm from Daniel Bernstein and
based on CurveCP's security handshake. See http://rfc.zeromq.org/spec:25,
http://rfc.zeromq.org/spec:26, and http://curvecp.org.
Authentication is done by pluggable "authenticators" that connect to libzmq
over an inproc endpoint, see http://rfc.zeromq.org/spec:27.
Socket options to configure PLAIN security on client or server:
* ZMQ_PLAIN_SERVER, ZMQ_PLAIN_USERNAME, ZMQ_PLAIN_PASSWORD. See
tests/test_security_plain.
Socket options to configure CURVE security on client or server:
* ZMQ_CURVE_SERVER, ZMQ_CURVE_PUBLICKEY, ZMQ_CURVE_SECRETKEY,
ZMQ_CURVE_SERVERKEY. See tests/test_security_curve.cpp.
Socket options to configure "domain" for ZAP handler:
* ZMQ_ZAP_DOMAIN, see tests/test_security_null.cpp.
Support for encoding/decoding CURVE binary keys to ASCII:
* zmq_z85_encode, zmq_z85_decode.
Other issues addressed in this release
--------------------------------------
* LIBZMQ-525 Multipart upstreaming from XSUB to XPUB
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.
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