A new kind of tree nodes is currently being developed in ebtree v7,
consisting in storing a scope in each node indicating a visibility
mask so that certain nodes are not reported on certain lookups. The
initial goal was to make this usable with a multi-thread scheduler.
Since the ebtree v7 code is completely different from v6, this patch
instead copies the minimally required functions from eb32 and ebtree
and calls them "eb32sc_*". At the moment the scope is not implemented,
it's only passed in arguments.
The first pid in the pidfile is now the parent, it's more convenient for
supervising the processus.
You can now reload haproxy in master-worker mode with convenient command
like: kill -USR2 $(head -1 /tmp/haproxy.pid)
The __appctx_wakeup() function already does it. It matters with threads
enabled because it simplifies the code in appctx_res_wakeup() to get rid
of this test.
Commit 0493149 ("MINOR: thread: report multi-thread support in haproxy -vv")
added information about thread support in haproxy -vv output but accidently
marked the message as "must_free" while it's a constant. This causes a segv
on the old process on clean exit if threads are enabled. It doesn't affect
the stability during operations however.
unbind_listener() takes the listener lock, which is already held by
enable_listener(). This situation happens when starting with nbproc > 1
with some bind lines limited to a certain process, because in this case
enable_listener() tries to stop unneeded listeners.
This commit introduces __do_unbind_listeners() which must be called with
the lock held, and makes enable_listener() use this one. Given that the
only return code has never been used and that it starts to make the code
more complicated to propagate it before throwing it to the trash, the
function's return type was changed to void.
The spin_unlock() was called just before setting the expiry to
TICK_ETERNITY, so if another thread has the time to perform its
update and set a timeout, this would would clear it.
Commit c3680ec ("MINOR: add severity information to cli feedback messages")
introduced a severity level to CLI messages, but one of them was missed
on "set server addr". No backport is needed.
Given that all spinning loops we've had since 1.8-rc1 were caused by
unbalanced lock/unlock, let's get rid of all return statements in the
locked check functions and only exit via a a single unlock place.
The "set server <srv> check-port" CLI handler forgot to return after
detecting an error on the port number, and still proceeds with the action.
This needs to be backported to 1.7.
Some unlocks were missing, resulting in deadlocks even with a single thread.
We really need to make these functions safer by getting rid of all those
remaining "return" calls and only leave using a goto!
Released version 1.8-rc2 with the following main changes :
- BUG/MINOR: send-proxy-v2: fix dest_len in make_tlv call
- BUG/MINOR: send-proxy-v2: string size must include ('\0')
- MINOR: mux: Only define pipe functions on linux.
- MINOR: cache: Remove useless test for nonzero.
- MINOR: cache: Don't confuse act_return and act_parse_ret.
- BUG/MEDIUM: h2: don't try to parse incomplete H1 responses
- BUG/MEDIUM: checks/mux: always enable send-polling after connecting
- BUG/MAJOR: fix deadlock on healthchecks.
- BUG/MINOR: thread: fix a typo in the debug code
- BUILD: shctx: allow to be built without openssl
- BUG/MEDIUM: cache: don't try to resolve wrong filters
- BUG/MAJOR: buffers: fix get_buffer_nc() for data at end of buffer
- BUG/MINOR: freq: fix infinite loop on freq_ctr_period.
- BUG/MINOR: stdarg.h inclusion
- BUG/MINOR: dns: fix missing lock protection on server.
- BUG/MINOR: lua: fix missing lock protection on server.
- BUILD: enable USE_THREAD for OpenBSD build.
- BUG/MAJOR: mux_pt: don't dereference a connstream after ->wake()
- MINOR: thread: report multi-thread support in haproxy -vv
Using peers or stick table we could update an freq_ctr
using a tick value with the first bit set but this
bit is reserved for lock since multithreading support.
This function incorrectly dealt with the case where data doesn't
wrap but lies at the end of the buffer, resulting in Lukas' reported
data corruption with HTTP/2. No backport is needed, it was introduced
for HTTP/2 in 1.8-dev.
Fix bugs due to missing unlock and recursive lock performing
http health check.
The server's lock scope was enlarged to protect all callers
of 'set_server_check_status' and 'chk_report_conn_err'.
This fix also protects tcpcheck against concurrency.
Before introducing the mux layer, tcp_connect() would poll for sending
to detect the connection establishment. It happens that the health
checks have apparently never explicitly enabled this polling and have
been relying on this implicit one.
Now that there's the mux layer, the conn_stream needs to be enabled
for polling as well and since it's not done in the checks, it's never
done and the check's request doesn't leave the machine, as can be
noticed with http checks.
The solution simply consists in going back to the well-known case
where we enable polling after connecting using cs_want_send() if we
have anything but just a plain connect(). The regular data path is
not affected because the stream interface code automatically computes
the polling needs based on buffer contents.
This situation which must not happen does in fact happen when feeding
artificial responses using errorfiles, Lua or an applet. For now it
causes the H1 response parser to loop forever trying to get a more
complete response. Since it cannot progress, let's return an error.
Don't bother testing if len is nonzero, we know it is, as we're in the
"else" part of a if (!len), and testing it confuses clang into thinking
ret may be left uninitialized.
Released version 1.8-rc1 with the following main changes :
- BUG/MEDIUM: server: Allocate tmptrash before using it.
- CONTRIB: trace: add the possibility to place trace calls in the code
- CONTRIB: trace: try to display the function's return value on exit
- CONTRIB: trace: report the base name only for file names
- BUILD: ssl: support OPENSSL_NO_ASYNC #define
- MINOR: ssl: build with recent BoringSSL library
- BUG/MINOR: ssl: OCSP_single_get0_status can return -1
- BUG/MINOR: cli: restore "set ssl tls-key" command
- CLEANUP: cli: remove undocumented "set ssl tls-keys" command
- IMPORT: sha1: import SHA1 functions
- MINOR: sample: add the sha1 converter
- MINOR: sample: add the hex2i converter
- MINOR: stream-int: stop checking for useless connection flags in chk_snd_conn
- MINOR: ssl: don't abort after sending 16kB
- MINOR: connection: move the cleanup of flag CO_FL_WAIT_ROOM
- MINOR: connection: add flag CO_FL_WILL_UPDATE to indicate when updates are granted
- MEDIUM: connection: make use of CO_FL_WILL_UPDATE in conn_sock_shutw()
- MINOR: raw_sock: make use of CO_FL_WILL_UPDATE
- MINOR: ssl_sock: make use of CO_FL_WILL_UPDATE
- BUG/MINOR: checks: Don't forget to release the connection on error case.
- MINOR: buffer: add the buffer input manipulation functions
- BUG/MEDIUM: prevent buffers being overwritten during build_logline() execution
- MEDIUM: cfgparse: post section callback
- MEDIUM: cfgparse: post parsing registration
- MINOR: lua: add uuid to the Class Proxy
- MINOR: hlua: Add regex class
- MINOR: http: Mark the 425 code as "Too Early".
- MEDIUM: ssl: convert CBS (BoringSSL api) usage to neutral code
- MINOR: ssl: support Openssl 1.1.1 early callback for switchctx
- MINOR: ssl: generated certificate is missing in switchctx early callback
- MEDIUM: ssl: Handle early data with OpenSSL 1.1.1
- BUILD: Makefile: disable -Wunused-label
- MINOR: ssl/proto_http: Add keywords to take care of early data.
- BUG/MINOR: lua: const attribute of a string is overridden
- MINOR: ssl: Don't abuse ssl_options.
- MINOR: update proxy-protocol-v2 #define
- MINOR: merge ssl_sock_get calls for log and ppv2
- MINOR: add ALPN information to send-proxy-v2
- MEDIUM: h1: ensure that 1xx, 204 and 304 don't have a payload body
- CLEANUP: shctx: get ride of the shsess_packet{_hdr} structures
- MEDIUM: lists: list_for_each_entry{_safe}_from functions
- REORG: shctx: move lock functions and struct
- MEDIUM: shctx: allow the use of multiple shctx
- REORG: shctx: move ssl functions to ssl_sock.c
- MEDIUM: shctx: separate ssl and shctx
- MINOR: shctx: rename lock functions
- MINOR: h1: store the status code in the H1 message
- BUG/MINOR: spoe: Don't compare engine name and SPOE scope when both are NULL
- BUG/MINOR: spoa: Update pointer on the end of the frame when a reply is encoded
- MINOR: action: Add trk_idx inline function
- MINOR: action: Use trk_idx instead of tcp/http_trk_idx
- MINOR: action: Add a function pointer in act_rule struct to check its validity
- MINOR: action: Add function to check rules using an action ACT_ACTION_TRK_*
- MINOR: action: Add a functions to check http capture rules
- MINOR: action: Factorize checks on rules calling check_ptr if defined
- MINOR: acl: Pass the ACLs as an explicit parameter of build_acl_cond
- MEDIUM: spoe: Add support of ACLS to enable or disable sending of SPOE messages
- MINOR: spoe: Check uniqness of SPOE engine names during config parsing
- MEDIUM: spoe: Parse new "spoe-group" section in SPOE config file
- MEDIUM: spoe/rules: Add "send-spoe-group" action for tcp/http rules
- MINOR: spoe: Move message encoding in its own function
- MINOR: spoe: Add a type to qualify the message list during encoding
- MINOR: spoe: Add a generic function to encode a list of SPOE message
- MEDIUM: spoe/rules: Process "send-spoe-group" action
- BUG/MINOR: dns: Fix CLI keyword declaration
- MAJOR: dns: Refactor the DNS code
- BUG/MINOR: mailers: Fix a memory leak when email alerts are released
- MEDIUM: mailers: Init alerts during conf parsing and refactor their processing
- MINOR: mailers: Use pools to allocate email alerts and its tcpcheck_rules
- MINOR: standard: Add memvprintf function
- MINOR: log: Save alerts and warnings emitted during HAProxy startup
- MINOR: cli: Add "show startup-logs" command
- MINOR: startup: Extend the scope the MODE_STARTING flag
- MINOR: threads: Prepare makefile to link with pthread
- MINOR: threads: Add THREAD_LOCAL macro
- MINOR: threads: Add atomic-ops and plock includes in import dir
- MEDIUM: threads: Add hathreads header file
- MINOR: threads: Add mechanism to register per-thread init/deinit functions
- MINOR: threads: Add nbthread parameter
- MEDIUM: threads: Adds a set of functions to handle sync-point
- MAJOR: threads: Start threads to experiment multithreading
- MINOR: threads: Define the sync-point inside run_poll_loop
- MEDIUM: threads/buffers: Define and register per-thread init/deinit functions
- MEDIUM: threads/chunks: Transform trash chunks in thread-local variables
- MEDIUM: threads/time: Many global variables from time.h are now thread-local
- MEDIUM: threads/logs: Make logs thread-safe
- MEDIUM: threads/pool: Make pool thread-safe by locking all access to a pool
- MAJOR: threads/fd: Make fd stuffs thread-safe
- MINOR: threads/fd: Add a mask of threads allowed to process on each fd in fdtab array
- MEDIUM: threads/fd: Initialize the process mask during the call to fd_insert
- MINOR: threads/fd: Process cached events of FDs depending on the process mask
- MINOR: threads/polling: pollers now handle FDs depending on the process mask
- WIP: SQUASH WITH SYNC POINT
- MAJOR: threads/task: handle multithread on task scheduler
- MEDIUM: threads/signal: Add a lock to make signals thread-safe
- MEDIUM: threads/listeners: Make listeners thread-safe
- MEDIUM: threads/proxy: Add a lock per proxy and atomically update proxy vars
- MEDIUM: threads/server: Make connection list (priv/idle/safe) thread-safe
- MEDIUM: threads/server: Add a lock per server and atomically update server vars
- MINOR: threads/server: Add a lock to deal with insert in updates_servers list
- MEDIUM: threads/lb: Make LB algorithms (lb_*.c) thread-safe
- MEDIUM: threads/stick-tables: handle multithreads on stick tables
- MINOR: threads/sample: Change temp_smp into a thread local variable
- MEDIUM: threads/http: Make http_capture_bad_message thread-safe
- MINOR: threads/regex: Change Regex trash buffer into a thread local variable
- MAJOR: threads/applet: Handle multithreading for applets
- MAJOR: threads/peers: Make peers thread safe
- MAJOR: threads/buffer: Make buffer wait queue thread safe
- MEDIUM: threads/stream: Make streams list thread safe
- MAJOR: threads/ssl: Make SSL part thread-safe
- MEDIUM: threads/queue: Make queues thread-safe
- MAJOR: threads/map: Make acls/maps thread safe
- MEDIUM: threads/freq_ctr: Make the frequency counters thread-safe
- MEDIUM: thread/vars: Make vars thread-safe
- MEDIUM: threads/filters: Add init/deinit callback per thread
- MINOR: threads/filters: Update trace filter to add _per_thread callbacks
- MEDIUM: threads/compression: Make HTTP compression thread-safe
- MEDIUM: threads/lua: Makes the jmpbuf and some other buffers local to the current thread.
- MEDIUM: threads/lua: Add locks around the Lua execution parts.
- MEDIUM: threads/lua: Ensure that the launched tasks runs on the same threads than me
- MEDIUM: threads/lua: Cannot acces to the socket if we try to access from another thread.
- MEDIUM: threads/xref: Convert xref function to a thread safe model
- MEDIUM: threads/tasks: Add lock around notifications
- MEDIUM: thread/spoe: Make the SPOE thread-safe
- MEDIUM: thread/dns: Make DNS thread-safe
- MINOR: threads: Add thread-map config parameter in the global section
- MINOR: threads/checks: Add a lock to protect the pid list used by external checks
- MINOR: threads/checks: Set the task process_mask when a check is executed
- MINOR: threads/mailers: Add a lock to protect queues of email alerts
- MEDIUM: threads/server: Use the server lock to protect health check and cli concurrency
- MINOR: threads: Don't start when device a detection module is used
- BUG/MEDIUM: threads: Run the poll loop on the main thread too
- BUG/MINOR: threads: Add missing THREAD_LOCAL on static here and there
- MAJOR: threads: Offically enable the threads support in HAProxy
- BUG/MAJOR: threads/freq_ctr: fix lock on freq counters.
- BUG/MAJOR: threads/time: Store the time deviation in an 64-bits integer
- BUILD: stick-tables: silence an uninitialized variable warning
- BUG/MINOR: dns: Fix SRV records with the new thread code.
- MINOR: ssl: Remove the global allow-0rtt option.
- CLEANUP: threads: replace the last few 1UL<<tid with tid_bit
- CLEANUP: threads: rename process_mask to thread_mask
- MINOR: h1: add a function to measure the trailers length
- MINOR: threads: add a portable barrier for threads and non-threads
- BUG/MAJOR: threads/freq_ctr: use a memory barrier to detect changes
- BUG/MEDIUM: threads: Initialize the sync-point
- MEDIUM: connection: start to introduce a mux layer between xprt and data
- MINOR: connection: implement alpn registration of muxes
- MINOR: mux: register the pass-through mux for any ALPN string
- MEDIUM: session: use the ALPN token and proxy mode to select the mux
- MINOR: connection: report the major HTTP version from the MUX for logging (fc_http_major)
- MINOR: connection: introduce conn_stream
- MINOR: mux: add more methods to mux_ops
- MINOR: connection: introduce the conn_stream manipulation functions
- MINOR: mux_pt: implement remaining mux_ops methods
- MAJOR: connection : Split struct connection into struct connection and struct conn_stream.
- MINOR: connection: make conn_stream users also check for per-stream error flag
- MINOR: conn_stream: new shutr/w status flags
- MINOR: conn_stream: modify cs_shut{r,w} API to pass the desired mode
- MEDIUM: connection: make conn_sock_shutw() aware of lingering
- MINOR: connection: add cs_close() to close a conn_stream
- MEDIUM: mux_pt: make cs_shutr() / cs_shutw() properly close the connection
- MEDIUM: connection: replace conn_full_close() with cs_close()
- MEDIUM: connection: make mux->detach() release the connection
- MEDIUM: stream: do not forcefully close the client connection anymore
- MEDIUM: checks: exclusively use cs_destroy() to release a connection
- MEDIUM: connection: add a destroy callback
- MINOR: session: release the listener with the session, not the stream
- MEDIUM: session: make use of the connection's destroy callback
- CONTRIB: hpack: implement a reverse huffman table generator for hpack
- MINOR: hpack: implement the HPACK Huffman table decoder
- MINOR: hpack: implement the header tables management
- MINOR: hpack: implement the decoder
- MEDIUM: hpack: implement basic hpack encoding
- MINOR: h2: centralize all HTTP/2 protocol elements and constants
- MINOR: h2: create a very minimalistic h2 mux
- MINOR: h2: expose tune.h2.header-table-size to configure the table size
- MINOR: h2: expose tune.h2.initial-window-size to configure the window size
- MINOR: h2: expose tune.h2.max-concurrent-streams to limit the number of streams
- MINOR: h2: create the h2c struct and allocate its pool
- MINOR: h2: create the h2s struct and the associated pool
- MINOR: h2: handle two extra stream states for errors
- MINOR: h2: add a frame header descriptor for incoming frames
- MEDIUM: h2: allocate and release the h2c context on connection init/end
- MEDIUM: h2: implement basic recv/send/wake functions
- MEDIUM: h2: dynamically allocate the demux buffer on Rx
- MEDIUM: h2: implement the mux buffer allocator
- MINOR: h2: add the connection and stream flags listing the causes for blocking
- MINOR: h2: add function h2s_id() to report a stream's ID
- MINOR: h2: small function to know when the mux is busy
- MINOR: h2: new function h2c_error to mark an error on the connection
- MINOR: h2: new function h2s_error() to mark an error on a stream
- MINOR: h2: add h2_set_frame_size() to update the size in a binary frame
- MINOR: h2: new function h2_peek_frame_hdr() to retrieve a new frame header
- MINOR: h2: add a few functions to retrieve contents from a wrapping buffer
- MINOR: h2: add stream lookup function based on the stream ID
- MINOR: h2: create dummy idle and closed streams
- MINOR: h2: add the function to create a new stream
- MINOR: h2: update the {MUX,DEM}_{M,D}ALLOC flags on buffer availability
- MEDIUM: h2: start to consider the H2_CF_{MUX,DEM}_* flags for polling
- MINOR: h2: also terminate the connection on shutr
- MEDIUM: h2: properly consider all conditions for end of connection
- MEDIUM: h2: wake the connection up for send on pending streams
- MEDIUM: h2: start to implement the frames processing loop
- MINOR: h2: add a function to send a GOAWAY error frame
- MINOR: h2: match the H2 connection preface on init
- MEDIUM: h2: enable connection polling for send when a cs wants to emit
- MEDIUM: h2: enable reading again on the connection if it was blocked on stream buffer full
- MEDIUM: h2: process streams pending for sending
- MINOR: h2: send a real SETTINGS frame based on the configuration
- MEDIUM: h2: detect the presence of the first settings frame
- MINOR: h2: create a stream parser for the demuxer
- MINOR: h2: implement PING frames
- MEDIUM: h2: decode SETTINGS frames and extract relevant settings
- MINOR: h2: lookup the stream during demuxing
- MEDIUM: h2: honor WINDOW_UPDATE frames
- MINOR: h2: implement h2_send_rst_stream() to send RST_STREAM frames
- MINOR: h2: handle CONTINUATION frames
- MEDIUM: h2: partial implementation of h2_detach()
- MEDIUM: h2: unblock a connection when its current stream detaches
- MEDIUM: h2: basic processing of HEADERS frame
- MEDIUM: h2: don't use trash to decode headers!
- MEDIUM: h2: implement the response HEADERS frame to encode the H1 response
- MEDIUM: h2: send the H1 response body as DATA frames
- MEDIUM: h2: skip the response trailers if any
- MEDIUM: h2: properly continue to parse header block when facing a 1xx response
- MEDIUM: h2: send WINDOW_UPDATE frames for connection
- MEDIUM: h2: handle request body in DATA frames
- MINOR: h2: handle RST_STREAM frames
- MEDIUM: h2: send DATA+ES or RST_STREAM on shutw/shutr
- MINOR: h2: use a common function to signal some and all streams.
- MEDIUM: h2: handle GOAWAY frames
- MINOR: h2: centralize the check for the idle streams
- MINOR: h2: centralize the check for the half-closed(remote) streams
- MEDIUM: h2: silently ignore frames higher than last_id after GOAWAY
- MINOR: h2: properly reject PUSH_PROMISE frames coming from the client
- MEDIUM: h2: perform a graceful shutdown on "Connection: close"
- MEDIUM: h2: send a GOAWAY frame when dealing with an empty response
- MEDIUM: h2: apply a timeout to h2 connections
- BUG/MEDIUM: h2: fix incorrect timeout handling on the connection
- MEDIUM: shctx: forbid shctx to read more than expected
- MEDIUM: cache: configuration parsing and initialization
- MEDIUM: cache: store objects in cache
- MEDIUM: cache: deliver objects from cache
Store object in the cache. The cache use an shctx for storage.
It uses an http-response action to store the headers and a filter to
store the body. The http-response action is used in order to allow
modifications by other actions before caching.
Forbid shctx to read more than expected, it allows you to use a greater
value as a len with shctx_row_data_get(), the size of the destination
buffer for example.
Previous commit ea3928 (MEDIUM: h2: apply a timeout to h2 connections)
was wrong for two reasons. The first one is that if the client timeout
is not set, it's used as zero, preventing connections from establishing.
The second reason is that if the timeout triggers with active streams
(normally it should not since the task is supposed to be disabled), the
task is removed (h2c->task=NULL), and the last quitting stream might
try to dereference it.
Instead of doing this, we simply not register the task if there's no
timeout (it's useless) and we always control its presence in the streams.
Till now there was no way to deal with a dead H2 connection. Now each
connection creates a task that wakes up to kill the connection. Its
timeout is constantly refreshed when there's some activity. In case
the timeout triggers, the best effort attempts are made at sending a
clean GOAWAY message before closing and signaling the streams.
The timeout is automatically disabled when there's an active stream on
the connection, and restarted when the last stream finishes. This way
it should not affect long sessions.
