Changes:

• message_t::rebuild with string argument, like the constructor #579
• Add DRAFT socket options for libzmq 4.3.2-4 #594
• Add function for adding file descriptor to poller_t #595
• Fix noexcept warnings #581
• Disambiguation from other max functions #578

Changes

• Type-safe socket.get(sockopt::type) https://github.com/zeromq/cppzmq/pull/523
• GCC C++14 fix https://github.com/zeromq/cppzmq/pull/553
• Support ZMQ_ONLY_FIRST_SUBSCRIBE https://github.com/zeromq/cppzmq/pull/558
• Add pkg-config file and instructions https://github.com/zeromq/cppzmq/pull/564 https://github.com/zeromq/cppzmq/pull/570
• Fix missing include https://github.com/zeromq/cppzmq/pull/568
• Fix monitor test failures https://github.com/zeromq/cppzmq/pull/576
• Improved documentation https://github.com/zeromq/cppzmq/pull/519 https://github.com/zeromq/cppzmq/pull/524

Fix fallback value for ZMQ_DEPRECATED

Fixed:

• Fix MSYS libzmq discovery (#510)
• Fix handshake event don't need DRAFT API in libzmq v4.3.0 and above (#509)
• Use chrono duration for poll default timeout (#497)
• context_t close no longer uses deprecated function (#490)
• Fix for potential memory leak in monitor_t::check_event (#482)
• Fix if constexpr warnings on MSVC (#460)
• Fix conversion warnings (#459)
• Deprecate confusing connected() function (#458)

Added:

• Add all draft socket types up to libzmq 4.3.4 (#488)
• Add support for socket_ref to multipart_t ctor/send/recv (#487, #470)
• Expose zmq::fd_t (#452)
• Add poller_t::size function (#451)

Fixes syntax issues with MSVC (#447)

• Add shutdown() for context_t
• Typesafe context options
• Typesafe socket options
• Better C++ standard detection
• CMake fixes and improvements
• Multipart message encoding and decoding
• Fix (unlikely) UB in message_t constructor
• Improved poll() overloads
• Require non-null handlers to active_poller
• Fix socket move assignment bug
• Deprecate surprising message_t constructor from string literals

• New generic algorithms for sending and receiving multipart messages
• New to_string and to_string_view member functions in message_t
• Less surprising behaviour when move assigning socket_t and context_t
• Return types for send and recv moved into zmq namespace
• Checks for 32/64bit-ness in cppzmqConfigVersion.cmake removed

TODO create release notes and fixes issues list

Fix version number (v4.4.0 accidentally claimed to be v4.3.1).

TODO create release notes and fixes issues list

• fixed issues when compiling with C++11
• fixed and improved cmake build (in and out of source builds, libzmq discovery, fallback to pkg-config and more)
• updated README.md with clear design goals, supported platforms
• official CI support for Linux, MacOS and Windows
• unit tests infrastructure
• test code coverage brought to 77%
• updated code style (more details in .clang-format)

socket_t:

• added support for draft ZMQ_SERVER and ZMQ_CLIENT sockets
• added support for draft ZMQ_RADIO and ZMQ_DISH sockets

poller_t:

• poller_t became thin abstraction layer on zmq_poller_*
• functionality with std::function handlers split and moved to a new active_poller_t in zmq_addon.hpp
• simpler and safer implementation
• made non-copyable, but properly movable
• more consistent and robust error handling
• event type part of handler definition
• fixed a segfault issue when modifying poller_t from a handler
• added empty method indicating presence of registered sockets

context_t:

• added methods for context options: setctxopt(int option_, int optval_) and int getctxopt(int option_)

message_t:

• easier construction from iterable type e.g. std::string, std::array
• added != and == operators and equals method marked as deprecated

multipart_t:

• added an operator<<(std::ostream) to easily print out multipart_t content

Full list of pull requests merged in this release:

• [closed] Problem: #209 and monitor_t tests not event driven #255
• [closed] editing "typename I" to "typename T" due to error: expected nested-na… #250
• [closed] Add first tests for monitor_t and fix monitor_t::abort #249
• [closed] Problem: README build badges too generic #248
• [closed] Problem: Travis requires sudo and draft not enabled for git repo #240
• [closed] Problem: Coverage with coveralls not working #247
• [closed] Problem: cmake build succeeds even if libzmq not found #243
• [closed] Problem: cppzmq build broken with C++11 compiler and git cloned repo. #236
• [closed] Add message_t::routing_id() and set_routing_id() #235
• [closed] Problem: cppzmq needs to be installed for pkg-config libzmq #234
• [closed] Problem: libzmq pkg-config build not covered by CI #232
• [closed] Problem: OSX build not enabled in Travis #230
• [closed] Problem: whitespace style too restrictive. #228
• [closed] Split poller_t into two layers #225
• [closed] Problem: design goals and supported platforms are not explicitly stated #224
• [closed] Problem: poller_t::wait_all and active_poller_t::wait declare int ret… #227
• [closed] Problem: inconsistent code style #226
• [closed] Problem: client/server socket types not defined. #223
• [closed] Problem: poller's constructor is not default generated #222
• [closed] Problem: poller move operations not complete #221
• [closed] Problem: poller can segfault when modified from registered handler. #219
• [closed] Fix message using empty version variable #220
• [closed] Problem: googletest is also installed into install destination #217
• [closed] Problem: Missing QUIET option causes a CMake warning #218
• [closed] Problem: deprecated poller's add method in draft API #216
• [closed] Problem: poller_t does not support modify #215
• [closed] Problem: Appveyor caches way too much. #214
• [closed] Problem: Appveyor Windows build does not cache googletest #213
• [closed] Problem: poller_t's deprecated add might throw std::bad_function_call #211
• [closed] Problem: Appveyor build is slow. #212
• [closed] Problem: poller_t invalid behavior on moved sockets #208
• [closed] Problem: tests are always building #210
• [closed] Remove unnecessary curly bracket #207
• [closed] Problem: Windows build broken because of multiple issues #204
• [closed] Improved tests and implementation of message_t #205
• [closed] Problem: poller's handler not aware of event type. #200
• [closed] Problem: message_t could be easier to construct and is missing equal not equal operators #203
• [closed] Problem: non consistent whitespace formatting #202
• [closed] Problem: insufficient tests for poller_t, bad usability since caller of add must store function object #201
• [closed] Problem: poller_t does not have great test coverage #196
• [closed] Added include directory to CMake instructions #198
• [closed] Problem: Draft build not enabled for git cloned cppzmq. #195
• [closed] Add some initial tests, add some build/version CI variants #194
• [closed] Add basic test infrastructure #192
• [closed] Add basic Travis CI for cppzmq #191
• [closed] Fix copy/move constructors of poller_t, and make error handling consistent with rest of API #190
• [closed] std::string conversion for zmq::message_t #187
• [closed] Added wrapper for context options #181
• [closed] fix installation source path of FindZeroMQ.cmake #179
• [closed] fix updated FindZeroMQ #178
• [closed] call pkg-config fallback FindZeroMQ.cmake #174

cppzmq version 4.2.2 stable, released on 2017/07/31

Bug Fixes

• monitor_t:
  • build error in constructor #135
  • blocked when used without threads #134
  • move constructor was only partly initialized #130
• socket::send(): improper EHOSTUNREACH handling #125
• check for zmq_msg_gets did not properly exclude libzmq 4.0.X #114

Features

• CMake:
  • export targets to config (requires CMake 3.0+ now) #118 #121
  • pkg-config fallback for libzmq installs via autotools #133
• peekstr & peektyp: peek into parts of messages #124
• allow empty handler parameter in zmq::poller_t::add() #119 #120
• poller_t class based on new libzmq poller API #111

Misc

• install instructions added #129 #131
• Copyright years updated d9f0f016c07046742738c65e1eb84722ae32d7d4