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Ajay Kumar Mahto, Lead DevOps Engineer, NPCI, Hyderabad +91 8987510264 ________________________________ From: Willy Tarreau <w...@1wt.eu> Sent: Friday, May 27, 2022 11:55:07 PM To: haproxy@formilux.org <haproxy@formilux.org> Subject: [ANNOUNCE] haproxy-2.6-dev12 WARNING: This mail has come from outside. Please verify sender, attachment and URLs before clicking on them. Hi, HAProxy 2.6-dev12 was released on 2022/05/27. It added 149 new commits after version 2.6-dev11. Yeah I know, I said we'll only issue -dev12 if we face some trouble. But stay cool, we didn't face any trouble. However we figured that it would help last-minute testers to have a final tagged version. The vast majority of patches are tagged CLEANUP and MINOR. That's great. One old github issue was finally addressed, regarding the HTTP version validation. In the past we used to accept any 4-letter protocol using letters H,P,R,S,T, which allowed us to match both HTTP and RTSP. But it was reported to cause trouble because it was neither possible to disable RTSP support not extend this to other protocols. The problem with having RTSP enabled by default is that if haproxy forwards it to a backend server that doesn't know it, the server may respond with an HTTP/0.9 error that will be blocked by haproxy which then returns a 502 error. That's no big deal until you're watching your load balancer's logs and counters. So now by default only HTTP is accepted, and this can be relaxed by adding "accept-invalid-http-request". To be honest, I really doubt that there are that many people using RTSP, given that we never ever get any single problem report about it, so I think it will not be a big deal to add this option in such cases so that all other users gain in serenity. This will likely be backported but if so, very slowly as this will be a behavior change, albeit a very small one. Some polishing was done on QUIC, to improve the behavior on closing connections and stopping the process, and error processing in general. The maintainability was also improved by refactoring certain areas. Ah, crap, I just noticed that we missed a few patches from Fred who added some doc and a few settings! The conn_streams that were holding up the release are now gone. It took two of us two full days of code analysis and head scratching to figure the role of certain antique flags and give them a more appropriate name, but that was really necessary. I must admit I really like the new model in 2.6, it's much more consistent and logical than 2.5 and older. It's visible in that it's easier to document and explain. And even during the changes it was easier to figure the field names for parts that had to be changed manually. There are a bit more patches than I initially expected because this time I refused to leave poorly named function arguments and local variables: we've suffered from this for many years where process_stream() used to have a "struct stream *sess" and the session was "sess->sess". I didn't want to experience this anymore, we need the code to be more intuitive and readable especially for new contributors, and given the large amount of changes since 2.5 that will complicate backports anyway, it was the perfect opportunity to pursue that quest. While these changes represent many patches, they're essentially renames. There's always the tiny risk of an undetected mistake but all of them are trivial, were reviewed multiple times, built and individually tested so I'm not worried (famous last words :-)). Some of us will continue testing over the week-end (it's already deployed on haproxy.org). I think we'll add a few bits of doc, Fred's patches that we missed, maybe a fix or two for last minute issues, and I expect to release on Tuesday (because Mondays are usually too short). 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compilation" Revert "MINOR: mux-quic: activate qmux traces on stdout via macro" MINOR: h3: mark ncbuf as const on h3_b_dup MINOR: mux-quic: do not alloc quic_stream_desc for uni remote stream MINOR: mux-quic: delay cs_endpoint allocation MINOR: mux-quic: add traces in qc_recv() MINOR: mux-quic: adjust return value of decode_qcs CLEANUP: h3: rename struct h3 -> h3c CLEANUP: h3: rename uni stream type constants BUG/MINOR: h3: prevent overflow when parsing SETTINGS MINOR: h3: refactor h3_control_send() MINOR: quic: support CONNECTION_CLOSE_APP emission MINOR: mux-quic: disable read on CONNECTION_CLOSE emission MINOR: h3: reject too big frames MINOR: mux-quic: emit STREAM_STATE_ERROR in qcc_recv BUG/MINOR: mux-quic: refactor uni streams TX/send H3 SETTINGS MINOR: h3/qpack: use qcs as type in decode callbacks MINOR: h3: define stream type MINOR: h3: refactor uni streams initialization MINOR: h3: check if frame is valid for stream type MINOR: h3: define non-h3 generic parsing function MEDIUM: quic: refactor uni streams RX CLEANUP: h3: remove h3 uni tasklet MINOR: h3: abort read on unknown uni stream MINOR: h3: refactor SETTINGS parsing/error reporting Christopher Faulet (3): BUG/MEDIUM: resolvers: Don't defer resolutions release in deinit function BUG/MINOR: task: Don't defer tasks release when HAProxy is stopping Revert "BUG/MINOR: task: Don't defer tasks release when HAProxy is stopping" Emeric Brun (2): BUG/MEDIUM: peers: fix segfault using multiple bind on peers sections BUG/MEDIUM: peers: prevent unitialized multiple listeners on peers section Thayne McCombs (1): BUG/MEDIUM: sample: Fix adjusting size in word converter Tim Duesterhus (5): CLEANUP: tools: Clean up non-QUIC error message handling in str2sa_range() BUG/MEDIUM: tools: Fix `inet_ntop` usage in sa2str CLEANUP: tools: Crash if inet_ntop fails due to ENOSPC in sa2str BUG/MEDIUM: http: Properly reject non-HTTP/1.x protocols REGTESTS: Do not use REQUIRE_VERSION for HAProxy 2.5+ (2) William Lallemand (2): DOC: configuration: add a warning for @system-ca on bind BUG/MINOR: ssl/lua: use correctly cert_ext in CertCache.set() Willy Tarreau (110): CLEANUP: init: address a coverity warning about possible multiply overflow MEDIUM: h1: enlarge the scope of accepted version chars with accept-invalid-http-request CLEANUP: init: address another coverity warning about a possible multiply overflow CLEANUP: conn_stream: remove unneeded exclusion of RX_WAIT_EP from RXBLK_ANY CLEANUP: conn_stream: rename the cs_endpoint's context to "conn" MINOR: conn_stream: add new sets of functions to set/get endpoint flags DEV: coccinelle: add cs_endp_flags.cocci CLEANUP: conn_stream: apply cs_endp_flags.cocci tree-wide DEV: coccinelle: add endp_flags.cocci CLEANUP: conn_stream: apply endp_flags.cocci tree-wide CLEANUP: conn_stream: rename the stream endpoint flags CS_EP_* to SE_FL_* CLEANUP: conn_stream: rename the cs_endpoint's target to "se" CLEANUP: conn_stream: rename cs_endpoint to sedesc (stream endpoint descriptor) CLEANUP: applet: rename the sedesc pointer from "endp" to "sedesc" CLEANUP: conn_stream: rename the conn_stream's endp to sedesc CLEANUP: conn_stream: rename cs_app_* to sc_app_* CLEANUP: conn_stream: tree-wide rename to stconn (stream connector) CLEANUP: mux-h1: add and use h1s_sc() to retrieve the stream connector CLEANUP: mux-h2: add and use h2s_sc() to retrieve the stream connector CLEANUP: mux-fcgi: add and use fcgi_strm_sc() to retrieve the stream connector CLEANUP: mux-pt: add and use pt_sc() to retrieve the stream connector CLEANUP: stdesc: rename the stream connector ->cs field to ->sc CLEANUP: stream: rename "csf" and "csb" to "scf" and "scb" CLEANUP: stconn: tree-wide rename stream connector flags CS_FL_* to SC_FL_* CLEANUP: stconn: tree-wide rename stconn states CS_ST/SB_* to SC_ST/SB_* MINOR: check: export wake_srv_chk() MINOR: conn_stream: test the various ops functions before calling them MEDIUM: stconn: merge the app_ops and the data_cb fields MINOR: applet: add new wrappers to put chk/blk/str/chr to channel from appctx CLEANUP: applet: use applet_put*() everywhere possible CLEANUP: stconn: rename cs_{i,o}{b,c} to sc_{i,o}{b,c} CLEANUP: stconn: rename cs_{check,strm,strm_task} to sc_strm_* CLEANUP: stconn: rename cs_conn() to sc_conn() CLEANUP: stconn: rename cs_mux() to sc_mux_strm() CLEANUP: stconn: rename cs_conn_mux() to sc_mux_ops() CLEANUP: stconn: rename cs_appctx() to sc_appctx() CLEANUP: stconn: rename __cs_endp_target() to __sc_endp() CLEANUP: stconn: rename cs_get_data_name() to sc_get_data_name() CLEANUP: stconn: rename cs_conn_*() to sc_conn_*() CLEANUP: stconn: rename cs_conn_get_first() to conn_get_first_sc() CLEANUP: stconn: rename cs_ep_set_error() to se_fl_set_error() CLEANUP: stconn: make a few functions take a const argument CLEANUP: stconn: use a single function to know if SC may send to SE MINOR: stconn: consider CF_SHUTW for sc_is_send_allowed() MINOR: stconn: remove calls to cs_done_get() MEDIUM: stconn: always rely on CF_SHUTR in addition to cs_rx_blocked() MEDIUM: stconn: remove SE_FL_RXBLK_SHUT MINOR: stconn: rename SE_FL_RXBLK_CONN to SE_FL_APPLET_NEED_CONN MEDIUM: stconn: take SE_FL_APPLET_NEED_CONN out of the RXBLK_ANY flags CLEANUP: stconn: rename cs_rx_room_{blk,rdy} to sc_{need,have}_room() CLEANUP: stconn: rename cs_rx_chan_{blk,rdy} to sc_{wont,will}_read() CLEANUP: stconn: rename cs_rx_buff_{blk,rdy} to sc_{need,have}_buff() MINOR: stconn: start to rename cs_rx_endp_{more,done}() to se_have_{no_,}more_data() MINOR: stconn: add sc_is_recv_allowed() to check for ability to receive CLEANUP: stconn: rename SE_FL_RX_WAIT_EP to SE_FL_HAVE_NO_DATA MEDIUM: stconn: move the RXBLK flags to the stream connector CLEANUP: stconn: rename SE_FL_WANT_GET to SE_FL_WILL_CONSUME CLEANUP: stconn: remove cs_tx_blocked() and cs_tx_endp_ready() CLEANUP: stconn: rename cs_{want,stop}_get() to se_{will,wont}_consume() CLEANUP: stconn: rename cs_cant_get() to se_need_more_data() CLEANUP: stconn: rename cs_{new,create,free,destroy}_* to sc_* CLEANUP: stconn: rename remaining management functions from cs_* to sc_* CLEANUP: stconn: rename cs{,_get}_{src,dst} to sc_* CLEANUP: stconn: rename cs_{shut,chk}* to sc_* CLEANUP: stconn: rename final state manipulation functions from cs_* to sc_* CLEANUP: quic: drop the name "conn_stream" from the pool variable names REORG: rename cs_utils.h to sc_strm.h REORG: stconn: rename conn_stream.{c,h} to stconn.{c,h} CLEANUP: muxes: rename "get_first_cs" to "get_first_sc" DEV: flags: use "sc" for stream conns instead of "cs" CLEANUP: check: rename all occurrences of stconn "cs" to "sc" CLEANUP: connection: rename all occurrences of stconn "cs" to "sc" CLEANUP: stconn: rename all occurrences of stconn "cs" to "sc" CLEANUP: quic/h3: rename all occurrences of stconn "cs" to "sc" CLEANUP: stream: rename all occurrences of stconn "cs" to "sc" CLEANUP: promex: rename all occurrences of stconn "cs" to "sc" CLEANUP: stats: rename all occurrences of stconn "cs" to "sc" CLEANUP: cli: rename all occurrences of stconn "cs" to "sc" CLEANUP: applet: rename all occurrences of stconn "cs" to "sc" CLEANUP: cache: rename all occurrences of stconn "cs" to "sc" CLEANUP: dns: rename all occurrences of stconn "cs" to "sc" CLEANUP: spoe: rename all occurrences of stconn "cs" to "sc" CLEANUP: hlua: rename all occurrences of stconn "cs" to "sc" CLEANUP: log-forward: rename all occurrences of stconn "cs" to "sc" CLEANUP: http-client: rename all occurrences of stconn "cs" to "sc" CLEANUP: mux-fcgi: rename all occurrences of stconn "cs" to "sc" CLEANUP: mux-h1: rename all occurrences of stconn "cs" to "sc" CLEANUP: mux-h2: rename all occurrences of stconn "cs" to "sc" CLEANUP: mux-pt: rename all occurrences of stconn "cs" to "sc" CLEANUP: peers: rename all occurrences of stconn "cs" to "sc" CLEANUP: sink: rename all occurrences of stconn "cs" to "sc" CLEANUP: sslsock: remove only occurrence of local variable "cs" CLEANUP: applet: rename appctx_cs() to appctx_sc() CLEANUP: stream: rename stream_upgrade_from_cs() to stream_upgrade_from_sc() CLEANUP: obj_type: rename OBJ_TYPE_CS to OBJ_TYPE_SC CLEANUP: stconn: replace a few remaining occurrences of CS in comments or traces DOC: internal: update the muxes doc to mention the stconn CLEANUP: mux-quic: rename the "endp" field to "sd" CLEANUP: mux-h1: rename the "endp" field to "sd" CLEANUP: mux-h2: rename the "endp" field to "sd" CLEANUP: mux-fcgi: rename the "endp" field to "sd" CLEANUP: mux-pt: rename the "endp" field to "sd" CLEANUP: stconn: rename a few "endp" arguments and variables to "sd" MINOR: stconn: turn SE_FL_WILL_CONSUME to SE_FL_WONT_CONSUME CLEANUP: stream: remove unneeded test on appctx during initialization CLEANUP: stconn: remove the new unneeded SE_FL_APP_MASK DEV: flags: fix "siet" shortcut name DEV: flags: rename the "endp" shortcut to "sd" for "stream descriptor" DEV: flags: reorder a few SC/SE flags DOC: internal: add a description of the stream connectors and 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