v2.0.0-alpha.1

Summary

This is the first "alpha" release of 2.0.0. Note that this is very much a work in progress, and stability is not guaranteed.
There will be more breaking changes coming. But to help with early adoption and testing, this is posted.

Reminder: If you want stability or need to use in production, please consider the "stable" branch instead.

The main changes here involve these major areas:

1. New UDP transport
2. Performance enhancements - fewer allocations, fewer locks -- this is an ongoing effort
3. Documentation changing to mdbook
4. Removal of some legacy support and refactoring some others to be less error prone

This version is NOT compatible with NNG 1.x at an API level -- there are breaking changes so please see the migration guide https://github.com/nanomsg/nng/blob/main/docs/ref/migrate/nng1.md.

Known Issues

1. The docs are a work in progress ... its only about halfway through the mdbook conversion so far
2. The optional ZeroTier transport is utterly broken (it likely won't even compile) - plan is to remove it, possibly rewriting it entirely later
3. During tests, it is possible for an occasional object to get leaked (TCP test sometimes leaks a connection object) -- there are races during finalization... note that this is not a "recurring" leak, so its pretty benign.
4. If you call nng_fini to quickly after setting things up, websocket/http may crash with use after free. The workaround right now is to wait a few dozen msec before calling nng_fini (or don't call it at all for a regular application!). This will be fixed by better use of reference counting in the near future.

What's Changed

• Gdamore/udp by @gdamore in #1879
• fix broken link to BUILD_TLS by @jan-ruzicka-c in #1872
• Fixes Compiler Warnings (Windows) by @shikokuchuo in #1877
• posix: add getentropy() based RNG by @gdamore in #1880
• Gdamore/oldeps by @gdamore in #1881
• Bump checkout action to v4. by @gdamore in #1882
• Actually enable UDP. Also fix some UWYI includes. by @gdamore in #1883
• fix aio test failures on darwin by @gdamore in #1884
• Bump codecov to v4 by @gdamore in #1885
• Missed config option for UDP by @gdamore in #1886
• udp: fix leaks on EP destroy by @gdamore in #1887
• UDP: add some statistics by @gdamore in #1889
• Gdamore/udp stats tests by @gdamore in #1891
• UDP: burst testing to improve coverage by @gdamore in #1892
• Gdamore/statslock by @gdamore in #1894
• Use const for nng_stat when possible. by @gdamore in #1895
• remove legacy support for configuration of transport options on socket by @gdamore in #1897
• Remove the libnanomsg compatibility layer by @gdamore in #1898
• Gdamore/tls api by @gdamore in #1899
• Gdamore/stream set gone by @gdamore in #1901
• NNI_GETXX macros are brittle due to casting mistake. by @gdamore in #1904
• NNG_OPT_RECVFD and NNG_OPT_SENDFD converted to functions. by @gdamore in #1905
• Gdamore/no ctx addr by @gdamore in #1906
• Gdamore/socket by @gdamore in #1908
• Replace NNG_OPT_SUB_SUBSCRIBE/UNSUBSCRIBE with functions. by @gdamore in #1909
• Gdamore/no untyped pipe get by @gdamore in #1910
• Gdamore/no ctx untyped by @gdamore in #1911
• Socket option handling clean ups for endpoints. by @gdamore in #1912
• Gdamore/new acutest by @gdamore in #1913
• Gdamore/udp burst tune by @gdamore in #1916
• UDP: prefer new packets (drop older) by @gdamore in #1917
• Gdamore/ipc test by @gdamore in #1918
• Gdamore/more tests by @gdamore in #1919
• Add matrix of TLS engines, including wolfSSL by @gdamore in #1923
• TLS configuration changed to use discret _set_tls and _get_tls functi… by @gdamore in #1925
• websocket: Do not allow a listener or dialer to change TLS while running by @gdamore in #1926
• New init by @gdamore in #1927
• tls: remove support for TLS 1.0 and 1.1. by @gdamore in #1931
• tls: add ecdsa test case by @gdamore in #1932
• remove NNG_OPT_SOCKNAME (and socket names altogether) by @gdamore in #1933
• tcp/tls: Remove support for local interface address in dialer URLs by @gdamore in #1934
• fix parsing bug in abstract URLs by @gdamore in #1935
• intern URL scheme by @gdamore in #1936
• Nng url no alloc by @gdamore in #1937
• Url accessors by @gdamore in #1938
• Gdamore/more opt url by @gdamore in #1939
• Tls mutual test by @gdamore in #1940
• Ipc tests by @gdamore in #1941
• No reqctx test by @gdamore in #1942
• option parser: test for no clustering support by @gdamore in #1943
• http: constify some functions by @gdamore in #1944
• No more sec desc option by @gdamore in #1945
• Remove all the get_ptr option accessors. by @gdamore in #1946
• Tls no extra resolver by @gdamore in #1947
• Nuts tests by @gdamore in #1952
• Http server race by @gdamore in #1953
• windows ipc: check the return value of nni_aio_schedule by @gdamore in #1956
• sockfd: check the result of nni_aio_schedule by @gdamore in #1957
• Htnuts by @gdamore in #1962
• fixes #1959 Occasional SIGSEGV in nng_recv_aio() on a respondent socket by @aleksejsolovev in #1960
• fixes #1408 Reference count as a first class type by @gdamore in #1963
• Add forgotten license boilerplate by @aleksejsolovev in #1965
• Aio reap noreschedule by @gdamore in #1966
• aio: stop has to wait for expirations to finish by @gdamore in #1967
• reap: thread exits prematurely after reinitialization by @gdamore in #1968
• Pipe null by @gdamore in #1969
• udp: hang on close after sending too large by @gdamore in #1970
• aio: make sure aio is initialized before certain operations by @gdamore in #1971
• ctx: Simplify handling for closed contexts. by @gdamore in #1972
• performance: reference counters can use relaxed order when incrementing by @gdamore in #1973
• websocket: inline the aios by @gdamore in #1974
• nuts: try to avoid address in use for most tests by @gdamore in #1975
• device: fixes for socket holds and leaking aio data by @gdamore in #1977
• aio: task_abort was a mistake by @gdamore in #1978
• Listener inline by @gdamore in #1981
• Windows iopc no close by @gdamore in #1984
• ipc transport: convert to using inline data structures by @gdamore in #1982
• Tcp stop by @gdamore in #1985
• streams: add explicit stop functions by @gdamore in #1987
• Http aio init by @gdamore in #1988
• Tcptran aio inline by @gdamore in #1989
• Inproc ref by @gdamore in #1990
• Tls inline 2 by @gdamore in #1991
• Websocket inline by @gdamore in #1992
• Websock stop by @gdamore in #1994
• syslog: test for existence by @gdamore in #1995
• POSIX poller: add support for select, and for choosing the poller by @gdamore in #1996
• Expose pfd by @gdamore in #1998
• Poll alloc by @gdamore in #1999
• workflows: add pollq and make build debug for backtraces by @gdamore in #2000
• workflows: only generate docs when appropriate, and don't do tests wh… by @gdamore in #2001
• freebsd workflow by @gdamore in #2002
• OmniOS tests (this covers illumos and Solaris mostly, which uses the … by @gdamore in #2003
• HTTP: intern the version and avoid allocation by @gdamore in #2005

New Contributors

• @jan-ruzicka-c made their first contribution in #1872

Full Changelog: v1.9.0...v2.0.0-alpha.1