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authorMartin Sustrik <sustrik@250bpm.com>2012-02-16 10:01:47 +0900
committerMartin Sustrik <sustrik@250bpm.com>2012-02-16 10:01:47 +0900
commit4a7aad06d95701cf232198093ce396dcdbb53e5b (patch)
tree8ced8929e603a179d9434099244dfd782e705d5e /NEWS
parent1fc63e4dbcf1438eb571d720f57be68852f820f7 (diff)
ZeroMQ renamed to Crossroads
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
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-OMQ version 3.1.0 (beta), released on 2011/12/18
-================================================
-
-General information
--------------------
-
-Based on community consensus, the 0MQ 3.1.x release reverts a number of
-features introduced in version 3.0. The major reason for these changes is
-improving backward compatibility with 0MQ 2.1.x.
-
-Development of the 0MQ 3.0.x series will be discontinued, and users are
-encouraged to upgrade to 3.1.
-
-The 0MQ 3.1.x releases use ABI version 3.
-
-Reverted functionality
-----------------------
-
-The following functionality present in 0MQ 3.0 has been reverted:
-
-* Wire format changes. The 0MQ 3.1 wire format is identical to that of 0MQ
- 2.1.
-
-* LABELs and COMMANDs have been removed.
-
-* Explicit identies are re-introduced, however they can be used only for
- explicit routing, not for durable sockets.
-
-* The ZMQ_ROUTER and ZMQ_DEALER socket types are once again aliases for
- ZMQ_XREQ and ZMQ_XREP.
-
-New functionality
------------------
-
-* The zmq_getmsgopt() function has been introduced.
-
-* Experimental IPv6 support has been introduced. This is disabled by
- default, see the zmq_setsockopt() documentation for enabling it.
-
-Other changes
--------------
-
-* The default HWM for all socket types has been set to 1000.
-
-* Many bug fixes.
-
-Building
---------
-
-* The dependency on libuuid has been removed.
-
-* Support for building on Android, and with MSVC 10 has been added.
-
-0MQ version 3.0.0 (alpha), released on 2011/07/12
-=================================================
-
-New functionality
------------------
-
-* POSIX-compliant zmq_send and zmq_recv introduced (uses raw buffer
- instead of message object).
-
-* ZMQ_MULTICAST_HOPS socket option added. Sets the appropriate field in
- IP headers of PGM packets.
-
-* Subscription forwarding. Instead of filtering on consumer, the
- subscription is moved as far as possible towards the publisher and
- filtering is done there.
-
-* ZMQ_XPUB, ZMQ_XSUB introduced. Allow to create subscription-
- forwarding-friendly intermediate devices.
-
-* Add sockopt ZMQ_RCVTIMEO/ZMQ_SNDTIMEO. Allow to set timeout for
- blocking send/recv calls.
-
-* A new LABEL flag was added to the wire format. The flag distinguishes
- message parts used by 0MQ (labels) from user payload message parts.
-
-* There is a new wire format for the REQ/REP pattern. First, the empty
- bottom-of-the-stack message part is not needed any more, the LABEL
- flag is used instead. Secondly, peer IDs are 32-bit integers rather
- than 17-byte UUIDs.
-
-* The REQ socket now drops duplicate replies.
-
-* Outstanding requests & replies associated with a client are dropped
- when the clients dies. This is a performance optimisation.
-
-* Introduced ZMQ_ROUTER and ZMQ_DEALER sockets. These mimic the
- functionality of ZMQ_ROUTER and ZMQ_DEALER in 0MQ/2.1.x. Guarantees
- backward compatibility for exsiting code.
-
-* Removed dependency on OS socketpair buffer size. No more asserts in
- mailbox.cpp because of low system limit of sockepair buffer size.
-
-API improvements
-----------------
-
-* Obsolete constants ZMQ_UPSTREAM and ZMQ_DOWNSTREAM removed. Use
- ZMQ_PUSH and ZMQ_PULL instead.
-
-* Timeout in zmq_poll is in milliseconds instead of microseconds. This
- makes zmq_poll() compliant with POSIX poll()
-
-* ZMQ_MCAST_LOOP removed. There's no support for multicast over
- loopback any more. Use IPC or TCP isntead.
-
-* zmq_send/zmq_recv was renamed zmq_sendmsg/zmq_recvmsg.
-
-* ZMQ_RECOVERY_IVL and ZMQ_RECOVERY_IVL_MSEC reconciled. The new option
- is named ZMQ_RECOVERY_IVL and the unit is milliseconds.
-
-* Option types changed. Most of the numeric types are now represented
- as 'int'.
-
-* ZMQ_HWM split into ZMQ_SNDHWM and ZMQ_RCVHWM. This makes it possible
- to control message flow separately for each direction.
-
-* ZMQ_NOBLOCK renamed ZMQ_DONTWAIT. That makes it POSIX-compliant.
-
-Less is More
-------------
-
-* Pre-built devices and zmq_device() removed. Should be made available
- as a separate project(s).
-
-* ZMQ_SWAP removed. Writing data to disk should be done on top of 0MQ,
- on inside it.
-
-* C++ binding removed from the core. Now it's a separate project, same
- as any other binding.
-
-Bug fixes
----------
-
-* Many.
-
-Building
---------
-
-* Make pkg-config dependency conditional.
-
-Distribution
-------------
-
-* Removed Debian packaging, which is now available at packages.debian.org
- or via apt-get.
-
-
-Older versions
-==============
-
-* See NEWS in ZeroMQ 2.1.x repository at http://github.com/zeromq/zeromq2-1.