HAProxy 1.8.21 was released on 2019/08/16. It added 64 new commits
after version 1.8.20.

It looks like we've been focused quite a bit on 2.0 and 1.9 lately and forgot
to update 1.8 :-/

The main issues addressed by this release are a possible segfault when
issuing "show map" and "show acl" over the CLI, a possible deadlock in the
dequeuing code that can be triggered with threads, server maxconn and
server slowstart together, a (low) risk of deadlock in the accept() code
when threads are enabled and a very low frontend maxconn value is set, and
a risk of infinite loop in the round-robin code when used with threads, as
the avoided server that once was eligible might have become full while
trying to find a better one.

There was also an assorted number of less important fixes in about all
areas, with nothing really standing out (compression, lua, dns, connections,
h2, spoe, checks). The good thing is that since the early reports that
followed 1.8.20 3-4 months ago, everything has become quite calm on this
front, either indicating that 1.8 is quite OK by now, or that most users
migrated to 2.0 (which would also explain the recent bump of reports in
this one).

Please find the usual URLs below :
   Site index       : http://www.haproxy.org/
   Discourse        : http://discourse.haproxy.org/
   Slack channel    : https://slack.haproxy.org/
   Issue tracker    : https://github.com/haproxy/haproxy/issues
   Sources          : http://www.haproxy.org/download/1.8/src/
   Git repository   : http://git.haproxy.org/git/haproxy-1.8.git/
   Git Web browsing : http://git.haproxy.org/?p=haproxy-1.8.git
   Changelog        : http://www.haproxy.org/download/1.8/src/CHANGELOG
   Cyril's HTML doc : http://cbonte.github.io/haproxy-dconv/

Complete changelog :
Christopher Faulet (18):
      BUG/MINOR: http: Call stream_inc_be_http_req_ctr() only one time per 
      MINOR: spoe: Use the sample context to pass frag_ctx info during encoding
      MINOR: examples: Use right locale for the last changelog date in 
      BUG/MEDIUM: listener: Fix how unlimited number of consecutive accepts is 
      MINOR: config: Test validity of tune.maxaccept during the config parsing
      CLEANUP: config: Don't alter listener->maxaccept when nbproc is set to 1
      BUG/MINOR: http_fetch: Rely on the smp direction for "cookie()" and 
      BUG/MEDIUM: spoe: Don't use the SPOE applet after releasing it
      BUG/MEDIUM: lb_fwlc: Don't test the server's lb_tree from outside the lock
      BUG/MEDIUM: lb_fas: Don't test the server's lb_tree from outside the lock
      BUG/MEDIUM: lb-chash: Fix the realloc() when the number of nodes is 
      BUG/MEDIUM: hlua: Check the calling direction in lua functions of the 
HTTP class
      MINOR: hlua: Don't set request analyzers on response channel for lua 
      MINOR: hlua: Add a flag on the lua txn to know in which context it can be 
      BUG/MINOR: hlua: Only execute functions of HTTP class if the txn is HTTP 
      BUG/MINOR: lua: Set right direction and flags on new HTTP objects
      BUG/MEDIUM: lb-chash: Ensure the tree integrity when server weight is 
      BUG/MEDIUM: lua: Fix test on the direction to set the channel exp timeout

David Carlier (1):
      BUG/MEDIUM: da: cast the chunk to string.

Emmanuel Hocdet (2):
      BUG/MINOR: ssl: fix 0-RTT for BoringSSL
      MINOR: ssl: ssl_fc_has_early should work for BoringSSL

Ilya Shipitsin (2):
      BUG/MINOR: ssl_sock: Fix memory leak when disabling compression
      BUILD: ssl: fix latest LibreSSL reg-test error

Kazuo Yagi (1):
      MINOR: doc: Remove -Ds option in man page

Kevin Zhu (1):
      BUG/MEDIUM: spoe: arg len encoded in previous frag frame but len changed

Michael Prokop (1):
      DOC: fix typos

Olivier Houchard (4):
      MINOR: threads: Implement HA_ATOMIC_LOAD().
      BUG/MEDIUM: port_range: Make the ring buffer lock-free.
      BUG/MEDIUM: fd: Always reset the polled_mask bits in fd_dodelete().
      MINOR: build: Disable -Wstringop-overflow.

Tim Duesterhus (1):
      BUG/MEDIUM: compression: Set Vary: Accept-Encoding for compressed 

William Lallemand (1):
      MINOR: doc: add master-worker in the man page

Willy Tarreau (30):
      BUG/MAJOR: map/acl: real fix segfault during show map/acl on CLI
      BUG/MEDIUM: dns: make the port numbers unsigned
      BUG/MAJOR: lb/threads: make sure the avoided server is not full on second 
      BUG/MEDIUM: http: fix "http-request reject" when not final
      BUG/MINOR: deinit/threads: make hard-stop-after perform a clean exit
      BUG/MEDIUM: connection: fix multiple handshake polling issues
      BUG/MEDIUM: vars: make sure the scope is always valid when accessing vars
      BUG/MEDIUM: vars: make the tcp/http unset-var() action support conditions
      BUG/MEDIUM: mux-h2: make sure the connection timeout is always set
      BUG/MINOR: http-rules: mention "deny_status" for "deny" in the error 
      BUILD: makefile: use :space: instead of digits to count commits
      BUILD: makefile: do not rely on shell substitutions to determine git 
      MINOR: task: introduce work lists
      BUG/MAJOR: listener: fix thread safety in resume_listener()
      BUG/MEDIUM: tcp-check: unbreak multiple connect rules again
      BUG/MEDIUM: http/htx: unbreak option http_proxy
      BUG/MEDIUM: tcp-checks: do not dereference inexisting conn_stream
      BUG/MEDIUM: protocols: add a global lock for the init/deinit stuff
      BUG/MINOR: proxy: always lock stop_proxy()
      BUILD: threads: add the definition of PROTO_LOCK
      DOC: improve the wording in CONTRIBUTING about how to document a bug fix
      BUG/MAJOR: queue/threads: avoid an AB/BA locking issue in 
      BUG/MEDIUM: protocols: properly initialize the proto_lock in 1.8
      BUG/MINOR: stream-int: also update analysers timeouts on activity
      BUG/MEDIUM: mux-h2: split the stream's and connection's window sizes
      BUG/MINOR: mux-h2: don't refrain from sending an RST_STREAM after another 
      BUG/MINOR: mux-h2: use CANCEL, not STREAM_CLOSED in h2c_frt_handle_data()
      BUG/MEDIUM: mux-h2: do not recheck a frame type after a state transition
      BUG/MINOR: mux-h2: always send stream window update before connection's
      BUG/MINOR: mux-h2: always reset rcvd_s when switching to a new frame

Yann C├ęzard (2):
      DOC: contrib/modsecurity: Typos and fix the reject example
      BUG/MEDIUM: contrib/modsecurity: If host header is NULL, don't try to 
strdup it


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