Hi,
HAProxy 2.6.18 was released on 2024/06/18. It added 82 new commits after
version 2.6.17.
This version follows the first release of 3.0. Here is a summary of the
most notable changes.
Several fixes are applied for better HTTP conformance. In some cases,
502 server initial errors were incorrectly hidden and are now properly
logged. CONNECT requests with a scheme are now rejected as they are
invalid according to RFC 7230. Empty paths are normalized to "/" for
aboslute-form URI.
Dynamic servers testing under heavy load have been performed during 3.0
development cycle. This revealed that crashes could occur due to the
removal of a server currently in used. Removal conditions were thus
adjusted to reject such operation. Also, some settings were not
completely initialized for dynamic servers which cause a difference of
behavior with static ones.
Still on the backend side, an issue was found when NTLM headers are
used. This caused the backend connection to be marked dynamically as
private to prevent HTTP reuse. However, this is conceptually wrong when
using HTTP/2 multiplexer on the backend side with http-reuse mode set to
aggressive or higher, as this connection can already be shared accross
several clients. Thus, NTLM headers are simply ignored in this case.
Minor fixes were merged for QUIC. Most of them are related to improve
the LibreSSL compatibility. Other than that, error handling was improved
to report more specific error codes from the different layers of QUIC
multiplexer, HTTP/3 or QPACK decoder.
For the SSL stack, cipher algorithm negotiation was adjusted as haproxy
could have chosen an ECDSA certificate even if not compatible with
client algorithms instead of fallback to RSA.
A bug was fixed for the peer applet where a blocking condition could
occured when reaching max-updates-at-once limit.
Cache hits should be increased as previously cached HTTP responses which
used Vary header on anything other than Accept-encoding but with
Encoding header present were never returned from the cache.
It is now possible to disable seamless reload on master-worker mode by
using the argument '-x /dev/null'. This may be necessary for some usage
since the introduction of automatic seamless reload for master-worker
mode.
An interesting security feature was backported to block traffic with
clients which use privileged port as their source port value. Such
behavior is highly suspect as it is often the sign of an amplification
attack. This can be activated using
harden.reject-privileged-ports.{tcp|quic} keywords. Note that on 3.0, we
chose to set it by default for QUIC. However, it remains disabled on 2.9
and lesser versions to keep the current behavior on stable haproxy
branches, but users are free to activate it if needed. It is
particularly useful when QUIC listeners are active to prevent DNS/NTP
amplification attack. However, on TCP this protection may break some
protocols such as FTP.
On the LUA side, a serie of cleanups and minor bugfixes are merged. Most
of them are relevant to error handling which may improve script
debugging. Also a crash was fixed when using CacheCert module from init
context.
A Solaris user reported that external checks were causing an infinite
loop. In fact, this was due to a wrong signal handling in evports,
Solaris polling mechanism, present since its first introduction in
haproxy.
Thanks to everyone who contributed to this release.
Please find the usual URLs below :
Site index : https://www.haproxy.org/
Documentation : https://docs.haproxy.org/
Wiki : https://github.com/haproxy/wiki/wiki
Discourse : https://discourse.haproxy.org/
Slack channel : https://slack.haproxy.org/
Issue tracker : https://github.com/haproxy/haproxy/issues
Sources : https://www.haproxy.org/download/2.6/src/
Git repository : https://git.haproxy.org/git/haproxy-2.6.git/
Git Web browsing : https://git.haproxy.org/?p=haproxy-2.6.git
Changelog : https://www.haproxy.org/download/2.6/src/CHANGELOG
Dataplane API :
https://github.com/haproxytech/dataplaneapi/releases/latest
Pending bugs : https://www.haproxy.org/l/pending-bugs
Reviewed bugs : https://www.haproxy.org/l/reviewed-bugs
Code reports : https://www.haproxy.org/l/code-reports
Latest builds : https://www.haproxy.org/l/dev-packages
---
Complete changelog :
Amaury Denoyelle (17):
BUG/MEDIUM: mux-quic: report early error on stream
BUG/MEDIUM: quic: remove unsent data from qc_stream_desc buf
MINOR: server: allow cookie for dynamic servers
BUG/MINOR: backend: use cum_sess counters instead of cum_conn
BUG/MINOR: mux-quic: fix error code on shutdown for non HTTP/3
BUG/MINOR: qpack: fix error code reported on QPACK decoding failure
BUG/MINOR: connection: parse PROXY TLV for LOCAL mode
MEDIUM: config: prevent communication with privileged ports
BUG/MINOR: quic: adjust restriction for stateless reset emission
DOC: quic: specify that connection migration is not supported
BUG/MINOR: quic: prevent crash on qc_kill_conn()
BUG/MEDIUM: server: fix dynamic servers initial settings
BUG/MEDIUM: quic: fix connection freeze on post handshake
MINOR: session: rename private conns elements
BUG/MAJOR: server: do not delete srv referenced by session
BUG/MEDIUM: http_ana: ignore NTLM for reuse aggressive/always and no H1
BUG/MAJOR: connection: fix server used_conns with H2 + reuse safe
Aurelien DARRAGON (17):
BUG/MINOR: ext-check: cannot use without preserve-env
BUG/MINOR: log: fix lf_text_len() truncate inconsistency
BUG/MINOR: tools/log: invalid encode_{chunk,string} usage
BUG/MINOR: log: invalid snprintf() usage in sess_build_logline()
CLEANUP: log: lf_text_len() returns a pointer not an integer
DOC: lua: fix filters.txt file location
MINOR: log: add dup_logsrv() helper function
BUG/MINOR: log: keep the ref in dup_logger()
BUG/MINOR: log: smp_rgs array issues with inherited global log directives
BUG/MEDIUM: fd: prevent memory waste in fdtab array
BUG/MINOR: hlua: use CertCache.set() from various hlua contexts
CLEANUP: hlua: use hlua_pusherror() where relevant
BUG/MINOR: hlua: don't use lua_pushfstring() when we don't expect LJMP
BUG/MINOR: hlua: fix unsafe hlua_pusherror() usage
BUG/MINOR: hlua: prevent LJMP in hlua_traceback()
BUG/MINOR: hlua: fix leak in hlua_ckch_set() error path
CLEANUP: hlua: simplify ambiguous lua_insert() usage in hlua_ctx_resume()
Christopher Faulet (14):
MINOR: cli: Remove useless loop on commands to find unescaped semi-colon
BUG/MEDIUM: cli: Warn if pipelined commands are delimited by a \n
BUG/MEDIUM: http-ana: Deliver 502 on keep-alive for fressh server
connection
BUG/MINOR: http-ana: Fix TX_L7_RETRY and TX_D_L7_RETRY values
BUG/MEDIUM: stconn: Don't forward channel data if input data must be
filtered
BUG/MEDIUM: peers: Fix exit condition when max-updates-at-once is reached
BUG/MINOR: stconn: Fix sc_mux_strm() return value
BUG/MINOR: h1: Check authority for non-CONNECT methods only if a scheme
is found
BUG/MEDIUM: h1: Reject CONNECT request if the target has a scheme
BUG/MINOR: htpp-ana/stats: Specify that HTX redirect messages have a C-L
header
BUG/MINOR: stats: Don't state the 303 redirect response is chunked
BUG/MEDIUM: mux-quic: Create sedesc in same time of the QUIC stream
BUG/MINOR: http-htx: Support default path during scheme based
normalization
BUG/MINOR: server: Don't reset resolver options on a new default-server
line
Damien Claisse (1):
BUG/MINOR: server: fix slowstart behavior
Frederic Lecaille (3):
MINOR: net_helper: Add support for floats/doubles.
BUG/MEDIUM: grpc: Fix several unaligned 32/64 bits accesses
BUG/MAJOR: quic: Crash with TLS_AES_128_CCM_SHA256 (libressl only)
Ilia Shipitsin (1):
BUILD: clock: improve check for pthread_getcpuclockid()
Ilya Shipitsin (1):
CI: revert kernel addr randomization introduced in 3a0fc864
Remi Tricot-Le Breton (1):
BUG/MEDIUM: cache: Vary not working properly on anything other than
accept-encoding
Valentine Krasnobaeva (3):
BUG/MINOR: ssl/ocsp: init callback func ptr as NULL
BUG/MINOR: activity: fix Delta_calls and Delta_bytes count
BUG/MINOR: haproxy: only tid 0 must not sleep if got signal
William Lallemand (3):
BUG/MINOR: mworker: reintroduce way to disable seamless reload with -x
/dev/null
CLEANUP: ssl/cli: remove unused code in dump_crtlist_conf
BUG/MEDIUM: ssl: wrong priority whem limiting ECDSA ciphers in ECDSA+RSA
configuration
Willy Tarreau (21):
BUG/MEDIUM: cli: fix once for all the problem of missing trailing LFs
MINOR: ext-check: add an option to preserve environment variables
BUG/MINOR: debug: make sure DEBUG_STRICT=0 does work as documented
BUG/MEDIUM: peers/trace: fix crash when listing event types
BUG/MEDIUM: evports: do not clear returned events list on signal
BUG/MINOR: sock: handle a weird condition with connect()
BUG/MINOR: fd: my_closefrom() on Linux could skip contiguous series of
sockets
BUG/MINOR: h1: fix detection of upper bytes in the URI
BUG/MEDIUM: htx: mark htx_sl as packed since it may be realigned
BUG/MEDIUM: stick-tables: properly mark stktable_data as packed
BUILD: stick-tables: better mark the stktable_data as 32-bit aligned
BUG/MEDIUM: quic_tls: prevent LibreSSL < 4.0 from negotiating
CHACHA20_POLY1305
DOC: config: fix incorrect section reference about custom log format
REGTESTS: acl_cli_spaces: avoid a warning caused by undefined logs
CI: scripts: fix build of vtest regarding option -C
BUILD: fd: errno is also needed without poll()
BUG/MINOR: cfgparse: remove the correct option on httpcheck send-state
warning
BUG/MINOR: tcpcheck: report correct error in tcp-check rule parser
BUG/MINOR: tools: fix possible null-deref in env_expand() on out-of-memory
MINOR: hlua: don't dump empty entries in hlua_traceback()
BUG/MEDIUM: quic: don't blindly rely on unaligned accesses
--
Amaury Denoyelle
