diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 153 |
1 files changed, 0 insertions, 153 deletions
@@ -1,153 +0,0 @@ -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. |