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Revision history for Perl extension AnyEvent.

TODO: document TCP_*** constants
TODO: add debug/trace logging to some modules
TODO: use the eval-with-cb-call trick also to speed up JSON?
TODO: FAQ: common pitfalls? invoke-before-return
TODO: FAQ: scope-ids? hosts file order?
TODO: AnyEvent::Handle with AnyEvent::IO?
TODO: invalid. and localhost. specialcasing inside AEDNS and not AESocket (rfc6761)
TODO: maybe implement env variable to give hosts precedence
TODO: more formats for parse_ipv6 (single ipv6 address without port, ...p80, ...#80)
TODO: inet_aton maybe pack C4? no, add a comment why not
TODO: socket prepare callbacks, can they easily signal failure as well?
TODO: Олег Г <verdrehung@gmail.com>, empty A record response causes
AnyEvent::resolve_sockaddr to eventually call pack_sockaddr with undef -
broken dns server, but maybe improve the response.

7.17 Wed Sep 18 03:04:49 CEST 2019
	- work around antique openssl version in RHEL 7  by formatting
          dh parameters differently (reported by several people).
	- add t/13_weaken.t.

7.16 Fri Jul 19 18:00:21 CEST 2019
	- add ffdhe group dh parameters from RFC 7919, and use ffdhe3072
          as new default, instead of schmorp1539.
        - AnyEvent::Log did not reassess logging status of
          AnyEvent::Log::logger's when contexts were changed with
          ->attach/detach/slaves, causing them to not log even though a
          recent attach should have caused them to log.
	- added some more logging configuration examples.
        - mention RFC 8482 in AnyEvent::DNS.

7.15 Tue Feb 26 03:07:42 CET 2019
        - INCOMPATIBLE CHANGE: AnyEvent::Handle's tls_detect documentation gave
          separate major and minor versions, while code passed only a single
          value. This version follows the documentation and now passes separate
          major and minor values.
	- work around Net::SSLeay not having been ported to openssl 1.1, but many
          distributions compiling it against openssl 1.1, which unfortunately
          succeeds and results in a very broken module.
        - AnyEvent::DNS::dns_unpack now stores the original DNS packet
          in the __ member, to allow decoding of undecodable resouce records
          containing compressed domian names.
	- AnyEvent::Socket::parse_ipv6 would NOT, as advertised, accept ipv4
          addresses. It now does and converts them to ipv4 mapped addresses.
        - support CAA records, based on patch by Steve Atkins.
        - add freenom and cloudflare nameservers as dns fallback.
	- AnyEvent::Strict would not properly ward against io watchers
          on files when the handle passed was a file descriptor.
        - document "internal" variables used by the dns en-/decoder to allow
          enterprising users to extend them in a semi-official way.

7.14 Sat Jun 24 01:44:19 CEST 2017
	- fix a crash bug in AnyEvent::Handle with openssl 1.1.0 (patched
	  by Paul Howarth and apparently tracked down by Mike McCauley).
	- AnyEvent::Handle->keepalive was documented (and defined) twice
          (found by Matt Merhar).
        - AnyEvent::Socket::tcp_bind/tcp_server would immediately unlink a unix
          listening socket unless a guard is used. Change this so that no
          cleanup will be performed unless a guard is used and document this more
          clearly.
        - make tcp_bind/tcp_server error messages more regular.
        - work around latest perl upstream breakage - this time, perl5porters were
          apparently bullied by a bogus CVE (CVE-2016-1238), and since distros
          stupidly apply anything that has "security fix" stamped on it, it's likely
          going to be a problem in practise (and working around it is trivial on
          windows and unix).
        - add TCP_FASTOPEN/MSG_FASTOPEN and MSG_NOSIGNAL/MSG_MORE/MSG_DONTWAIT
          to constants.
        - update warnings to common::sense 3.74 standards.

7.13 Sat Sep 17 04:31:49 CEST 2016
	- Only call tlsext_host_name for non-empty common names (reported
          by Maxime Soulé).
        - log a (single) notice message if SNI is not supported.
        - upgrade to UTS-46:9.0.0 draft and switch to non-transitional
          behaviour, beating thunderbird, ie, edge, chrome and safari to it :)
          (see also https://bugzilla.mozilla.org/show_bug.cgi?id=1218179)
        - turns out the UTS-46 IDNA testcase failures were indeed bugs in the
          testcases and the specification and not in the code - the post-9.0.0
          unicode files have all known problems fixed, so finally the AnyEvent
          IDNA implementation can pass the full IDNA testsuite - without needing
          a single fix :)
        - guarantee (and document) that condvar callbacks will be removed
          on invocation - important to avoid circular references.

7.12 Wed Jan 27 19:12:26 CET 2016
	- use common name as hostname for tls connects, if Net::SSLeay
          supports SNI.
        - fix documentation of tls_autostart read type in AnyEvent::Handle,
          analyzed by Felix Ostmann.

7.11 Thu Jul 16 14:36:00 CEST 2015
	- AnyEvent::Socket::parse_ipv6 could accept malformed ipv6
          addresses (extra "::" at end and similar cases).
	- add a more explicit warning to AnyEvent::Handle that it doesn't
          work on files, people keep getting confused.
        - new function AnyEvent::Socket::tcp_bind.
        - new functions AnyEvent::fh_block and AnyEvent::fh_unblock.
	- aligned ipv6 address formatting with RFC 5952 (by not shortening
          a single :0: to ::).
        - added stability canary support.

7.09 Sat May  2 16:38:53 CEST 2015
	- AnyEvent::Debug called an internal function (AnyEvent::Log::ft)
          that was renamed to AnyEvent::Log:format_time. uinder its old name
          (analyzed by Michael Stovenour).
        - update AnyEvent::DNS fallback resolver addresses:
          seems google effectively killed most other free dns resolvers,
          so remove them, but add cable and wireless (ecrc) since it was
          stable for 20 years or so, official or not, and there should be
          an alternative to google.
        - perl5porters broke windows error codes in 5.20, and mapped
          WSAEWOULDBLOCK on the (different) EWOULDBLOCK error code, and
          WSAEINPROGRESS into the incompatible ERINPROGRESS code, probably
          because they were so cool. They probably broke other error codes
          for no reason, too, but I didn't care for checking, it's too
          depressing. This version only works around the WSAEWOULDBLOCK
          issue, because I don't have a nice way to work around the
          WSAEINPROGRESS bug.

7.08 Wed Dec 10 05:27:17 CET 2014
        - work around a newly introduced bug in Socket 2.011 (an
          errornous sun_length check) (analyzed by Maxime Soulé).
	- AnyEvent::TLS didn't load (but refer to) AnyEvent::Socket
          (analyzed by Ben Magistro).
        - AnyEvent::Strict will now confess, not croak. This is in line with
          it being a development/debugging tool.
        - work around a number of libglib bugs (debug builds of libglib enforce
          certain undocumented behaviour patterns such as not being able to
          remove a child watch source after it has fired, which we will try
          to emulate to avoid "criticals". what where they thinking...).
        - mention json security issues in AnyEvent::Handle, now that Douglas
          Crockford has foolishly and incompatibly changed JSON.
        - changed default dns resolver "max_outstanding" value from 1 to 10,
          the latter beinfg the intended value all along
          (reported by Ilya Chesnokov).
        - added new "AnyEvent::Impl::UV" interface module to the UV event lib
          (written by Mike Lowell).

7.07 Tue Dec 17 17:45:02 CET 2013
	- the documentation for custom tls verify schemes was wrong. make it agree
          with the code (reported by Maxime Soulé).
	- added cbor read and write types to AnyEvent::Handle (using CBOR::XS).
        - work around an API change in openssl that could cause wrong tls connection
          aborts, likely on windows only (analyzed by sten).
        - calling AnyEvent->now_update with AnyEvent::Impl::Perl caused an
          endless loop (reported by Dietrich Rebmann).
        - add tlsv1_1 and tlsv1_2 protocols to AnyEvent::TLS
          (patch by Maxime Soulé).
        - document AnyEvent::Impl::IOAsync::set_loop and
          $AnyEvent::Impl::IOAsync::LOOP. Though only documented now, this
          functionality has _always_ been available.
	- force a toplevel domain name in t/81_hosts.t (analyzed by
          David Jack Wange Olrik).
        - document that AnyEvent::Log uses AnyEvent::IO.
        - warn about AnyEvent::Filesys::Notify performance.
        - praise the joys of AnyEvent::Fork::*.