The compression is disabled when the HTTP status code is not 200, indeed
compression on some HTTP code can create issues (ex: 206, 416).
Multipart message should not be compressed eitherway.
Released version 1.5-dev14 with the following main changes :
- DOC: fix minor typos
- BUG/MEDIUM: compression: does not forward trailers
- MINOR: buffer_dump with ASCII
- BUG/MEDIUM: checks: mark the check as stopped after a connect error
- BUG/MEDIUM: checks: ensure we completely disable polling upon success
- BUG/MINOR: checks: don't mark the FD as closed before transport close
- MEDIUM: checks: avoid accumulating TIME_WAITs during checks
- MINOR: cli: report the msg state in full text in "show sess $PTR"
- CLEANUP: checks: rename some server check flags
- MAJOR: checks: rework completely bogus state machine
- BUG/MINOR: checks: slightly clean the state machine up
- MEDIUM: checks: avoid waking the application up for pure TCP checks
- MEDIUM: checks: close the socket as soon as we have a response
- BUG/MAJOR: checks: close FD on all timeouts
- MINOR: checks: fix recv polling after connect()
- MEDIUM: connection: provide a common conn_full_close() function
- BUG/MEDIUM: checks: prevent TIME_WAITs from appearing also on timeouts
- BUG/MAJOR: peers: the listener's maxaccept was not set and caused loops
- MINOR: listeners: make the accept loop more robust when maxaccept==0
- BUG/MEDIUM: acl: correctly resolve all args, not just the first one
- BUG/MEDIUM: acl: make prue_acl_expr() correctly free ACL expressions upon exit
- BUG/MINOR: stats: fix inversion of the report of a check in progress
- MEDIUM: tcp: add explicit support for delayed ACK in connect()
- BUG/MEDIUM: connection: always disable polling upon error
- MINOR: connection: abort earlier when errors are detected
- BUG/MEDIUM: checks: report handshake failures
- BUG/MEDIUM: connection: local_send_proxy must wait for connection to establish
- MINOR: tcp: add support for the "v6only" bind option
- MINOR: stats: also report the computed compression savings in html stats
- MINOR: stats: report the total number of compressed responses per front/back
- MINOR: tcp: add support for the "v4v6" bind option
- DOC: stats: document the comp_rsp stats column
- BUILD: buffer: fix another isprint() warning on solaris
- MINOR: cli: add support for the "show sess all" command
- BUG/MAJOR: cli: show sess <id> may randomly corrupt the back-ref list
- MINOR: cli: improve output format for show sess $ptr
Sometimes when debugging haproxy, it is important to take a full
snapshot of all sessions and their respective states. Till now it
was complicated to do because we had to use scripts and sessions
would vanish between two runs.
Now with this command we have the same output as "show sess $id"
but for all sessions in the table. This is a debugging command only,
it should only be used by developers as it is never guaranteed to
perfectly work !
Commit 9b6700f added "v6only". As suggested by Vincent Bernat, it is
sometimes useful to have the opposite option to force binding to the
two protocols when the system is configured to bind to v6 only by
default. This option does exactly this. v6only still has precedence.
Released version 1.5-dev13 with the following main changes :
- BUILD: fix build issue without USE_OPENSSL
- BUILD: fix compilation error with DEBUG_FULL
- DOC: ssl: remove prefer-server-ciphers documentation
- DOC: ssl: surround keywords with quotes
- DOC: fix minor typo on http-send-name-header
- BUG/MEDIUM: acls using IPv6 subnets patterns incorrectly match IPs
- BUG/MAJOR: fix a segfault on option http_proxy and url_ip acl
- MEDIUM: http: accept IPv6 values with (s)hdr_ip acl
- BUILD: report zlib support in haproxy -vv
- DOC: compression: add some details and clean up the formatting
- DOC: Change is_ssl acl to ssl_fc acl in example
- DOC: make it clear what the HTTP request size is
- MINOR: ssl: try to load Diffie-Hellman parameters from cert file
- DOC: ssl: update 'crt' statement on 'bind' about Diffie-Hellman parameters loading
- MINOR: ssl: add elliptic curve Diffie-Hellman support for ssl key generation
- DOC: ssl: add 'ecdhe' statement on 'bind'
- MEDIUM: ssl: add client certificate authentication support
- DOC: ssl: add 'verify', 'cafile' and 'crlfile' statements on 'bind'
- MINOR: ssl: add fetch and ACL 'client_crt' to test a client cert is present
- DOC: ssl: add fetch and ACL 'client_cert'
- MINOR: ssl: add ignore verify errors options
- DOC: ssl: add 'ca-ignore-err' and 'crt-ignore-err' statements on 'bind'
- MINOR: ssl: add fetch and ACL 'ssl_verify_result'
- DOC: ssl: add fetch and ACL 'ssl_verify_result'
- MINOR: ssl: add fetches and ACLs to return verify errors
- DOC: ssl: add fetches and ACLs 'ssl_verify_crterr', 'ssl_verify_caerr', and 'ssl_verify_crterr_depth'
- MINOR: ssl: disable shared memory and locks on session cache if nbproc == 1
- MINOR: ssl: add build param USE_PRIVATE_CACHE to build cache without shared memory
- MINOR: ssl : add statements 'notlsv11' and 'notlsv12' and rename 'notlsv1' to 'notlsv10'.
- DOC: ssl : add statements 'notlsv11' and 'notlsv12' and rename 'notlsv1' to 'notlsv10'.
- MEDIUM: config: authorize frontend and listen without bind.
- MINOR: ssl: add statement 'no-tls-tickets' on bind to disable stateless session resumption
- DOC: ssl: add 'no-tls-tickets' statement documentation.
- BUG/MINOR: ssl: Fix CRL check was not enabled when crlfile was specified.
- BUG/MINOR: build: Fix compilation issue on openssl 0.9.6 due to missing CRL feature.
- BUG/MINOR: conf: Fix 'maxsslconn' statement error if built without OPENSSL.
- BUG/MINOR: build: Fix failure with USE_OPENSSL=1 and USE_FUTEX=1 on archs i486 and i686.
- MINOR: ssl: remove prefer-server-ciphers statement and set it as the default on ssl listeners.
- BUG/MEDIUM: ssl: subsequent handshakes fail after server configuration changes
- MINOR: ssl: add 'crt-base' and 'ca-base' global statements.
- MEDIUM: conf: rename 'nosslv3' and 'notlsvXX' statements 'no-sslv3' and 'no-tlsvXX'.
- MEDIUM: conf: rename 'cafile' and 'crlfile' statements 'ca-file' and 'crl-file'
- MINOR: ssl: use bit fields to store ssl options instead of one int each
- MINOR: ssl: add 'force-sslv3' and 'force-tlsvXX' statements on bind.
- MINOR: ssl: add 'force-sslv3' and 'force-tlsvXX' statements on server
- MINOR: ssl: add defines LISTEN_DEFAULT_CIPHERS and CONNECT_DEFAULT_CIPHERS.
- BUG/MINOR: ssl: Fix issue on server statements 'no-tls*' and 'no-sslv3'
- MINOR: ssl: move ssl context init for servers from cfgparse.c to ssl_sock.c
- MEDIUM: ssl: reject ssl server keywords in default-server statement
- MINOR: ssl: add statement 'no-tls-tickets' on server side.
- MINOR: ssl: add statements 'verify', 'ca-file' and 'crl-file' on servers.
- DOC: Fix rename of options cafile and crlfile to ca-file and crl-file.
- MINOR: sample: manage binary to string type convertion in stick-table and samples.
- MINOR: acl: add parse and match primitives to use binary type on ACLs
- MINOR: sample: export 'sample_get_trash_chunk(void)'
- MINOR: conf: rename all ssl modules fetches using prefix 'ssl_fc' and 'ssl_c'
- MINOR: ssl: add pattern and ACLs fetches 'ssl_fc_protocol', 'ssl_fc_cipher', 'ssl_fc_use_keysize' and 'ssl_fc_alg_keysize'
- MINOR: ssl: add pattern fetch 'ssl_fc_session_id'
- MINOR: ssl: add pattern and ACLs fetches 'ssl_c_version' and 'ssl_f_version'
- MINOR: ssl: add pattern and ACLs fetches 'ssl_c_s_dn', 'ssl_c_i_dn', 'ssl_f_s_dn' and 'ssl_c_i_dn'
- MINOR: ssl: add pattern and ACLs 'ssl_c_sig_alg' and 'ssl_f_sig_alg'
- MINOR: ssl: add pattern and ACLs fetches 'ssl_c_key_alg' and 'ssl_f_key_alg'
- MINOR: ssl: add pattern and ACLs fetches 'ssl_c_notbefore', 'ssl_c_notafter', 'ssl_f_notbefore' and 'ssl_f_notafter'
- MINOR: ssl: add 'crt' statement on server.
- MINOR: ssl: checks the consistency of a private key with the corresponding certificate
- BUG/MEDIUM: ssl: review polling on reneg.
- BUG/MEDIUM: ssl: Fix some reneg cases not correctly handled.
- BUG/MEDIUM: ssl: Fix sometimes reneg fails if requested by server.
- MINOR: build: allow packagers to specify the ssl cache size
- MINOR: conf: add warning if ssl is not enabled and a certificate is present on bind.
- MINOR: ssl: Add tune.ssl.lifetime statement in global.
- MINOR: compression: Enable compression for IE6 w/SP2, IE7 and IE8
- BUG: http: revert broken optimisation from 82fe75c1a7
- DOC: duplicate ssl_sni section
- MEDIUM: HTTP compression (zlib library support)
- CLEANUP: use struct comp_ctx instead of union
- BUILD: remove dependency to zlib.h
- MINOR: compression: memlevel and windowsize
- MEDIUM: use pool for zlib
- MINOR: compression: try init in cfgparse.c
- MINOR: compression: init before deleting headers
- MEDIUM: compression: limit RAM usage
- MINOR: compression: tune.comp.maxlevel
- MINOR: compression: maximum compression rate limit
- MINOR: log-format: check number of arguments in cfgparse.c
- BUG/MEDIUM: compression: no Content-Type header but type in configuration
- BUG/MINOR: compression: deinit zlib only when required
- MEDIUM: compression: don't compress when no data
- MEDIUM: compression: use pool for comp_ctx
- MINOR: compression: rate limit in 'show info'
- MINOR: compression: report zlib memory usage
- BUG/MINOR: compression: dynamic level increase
- DOC: compression: unsupported cases.
- MINOR: compression: CPU usage limit
- MEDIUM: http: add "redirect scheme" to ease HTTP to HTTPS redirection
- BUG/MAJOR: ssl: missing tests in ACL fetch functions
- MINOR: config: add a function to indent error messages
- REORG: split "protocols" files into protocol and listener
- MEDIUM: config: replace ssl_conf by bind_conf
- CLEANUP: listener: remove unused conf->file and conf->line
- MEDIUM: listener: add a minimal framework to register "bind" keyword options
- MEDIUM: config: move the "bind" TCP parameters to proto_tcp
- MEDIUM: move bind SSL parsing to ssl_sock
- MINOR: config: improve error reporting for "bind" lines
- MEDIUM: config: move the common "bind" settings to listener.c
- MEDIUM: config: move all unix-specific bind keywords to proto_uxst.c
- MEDIUM: config: enumerate full list of registered "bind" keywords upon error
- MINOR: listener: add a scope field in the bind keyword lists
- MINOR: config: pass the file and line to config keyword parsers
- MINOR: stats: fill the file and line numbers in the stats frontend
- MINOR: config: set the bind_conf entry on listeners created from a "listen" line.
- MAJOR: listeners: use dual-linked lists to chain listeners with frontends
- REORG: listener: move unix perms from the listener to the bind_conf
- BUG: backend: balance hdr was broken since 1.5-dev11
- MINOR: standard: make memprintf() support a NULL destination
- MINOR: config: make str2listener() use memprintf() to report errors.
- MEDIUM: stats: remove the stats_sock struct from the global struct
- MINOR: ssl: set the listeners' data layer to ssl during parsing
- MEDIUM: stats: make use of the standard "bind" parsers to parse global socket
- DOC: move bind options to their own section
- DOC: stats: refer to "bind" section for "stats socket" settings
- DOC: fix index to reference bind and server options
- BUG: http: do not print garbage on invalid requests in debug mode
- BUG/MINOR: config: check the proper pointer to report unknown protocol
- CLEANUP: connection: offer conn_prepare() to set up a connection
- CLEANUP: config: fix typo inteface => interface
- BUG: stats: fix regression introduced by commit 4348fad1
- MINOR: cli: allow to set frontend maxconn to zero
- BUG/MAJOR: http: chunk parser was broken with buffer changes
- MEDIUM: monitor: simplify handling of monitor-net and mode health
- MINOR: connection: add a pointer to the connection owner
- MEDIUM: connection: make use of the owner instead of container_of
- BUG/MINOR: ssl: report the L4 connection as established when possible
- BUG/MEDIUM: proxy: must not try to stop disabled proxies upon reload
- BUG/MINOR: config: use a copy of the file name in proxy configurations
- BUG/MEDIUM: listener: don't pause protocols that do not support it
- MEDIUM: proxy: add the global frontend to the list of normal proxies
- BUG/MINOR: epoll: correctly disable FD polling in fd_rem()
- MINOR: signal: really ignore signals configured with no handler
- MINOR: buffers: add a few functions to write chars, strings and blocks
- MINOR: raw_sock: always report asynchronous connection errors
- MEDIUM: raw_sock: improve connection error reporting
- REORG: connection: rename the data layer the "transport layer"
- REORG: connection: rename app_cb "data"
- MINOR: connection: provide a generic data layer wakeup callback
- MINOR: connection: split conn_prepare() in two functions
- MINOR: connection: add an init callback to the data_cb struct
- MEDIUM: session: use a specific data_cb for embryonic sessions
- MEDIUM: connection: use a generic data-layer init() callback
- MEDIUM: connection: reorganize connection flags
- MEDIUM: connection: only call the data->wake callback on activity
- MEDIUM: connection: make it possible for data->wake to return an error
- MEDIUM: session: register a data->wake callback to process errors
- MEDIUM: connection: don't call the data->init callback upon error
- MEDIUM: connection: it's not the data layer's role to validate the connection
- MEDIUM: connection: automatically disable polling on error
- REORG: connection: move the PROXY protocol management to connection.c
- MEDIUM: connection: add a new local send-proxy transport callback
- MAJOR: checks: make use of the connection layer to send checks
- REORG: server: move the check-specific parts into a check subsection
- MEDIUM: checks: use real buffers to store requests and responses
- MEDIUM: check: add the ctrl and transport layers in the server check structure
- MAJOR: checks: completely use the connection transport layer
- MEDIUM: checks: add the "check-ssl" server option
- MEDIUM: checks: enable the PROXY protocol with health checks
- CLEANUP: checks: remove minor warnings for assigned but not used variables
- MEDIUM: tcp: enable TCP Fast Open on systems which support it
- BUG: connection: fix regression from commit 9e272bf9
- CLEANUP: cttproxy: remove a warning on undeclared close()
- BUG/MAJOR: ensure that hdr_idx is always reserved when L7 fetches are used
- MEDIUM: listener: add support for linux's accept4() syscall
- MINOR: halog: sort output by cookie code
- BUG/MINOR: halog: -ad/-ac report the correct number of output lines
- BUG/MINOR: halog: fix help message for -ut/-uto
- MINOR: halog: add a parameter to limit output line count
- BUILD: accept4: move the socketcall declaration outside of accept4()
- MINOR: server: add minimal infrastructure to parse keywords
- MINOR: standard: make indent_msg() support empty messages
- MEDIUM: server: check for registered keywords when parsing unknown keywords
- MEDIUM: server: move parsing of keyword "id" to server.c
- BUG/MEDIUM: config: check-send-proxy was ignored if SSL was not builtin
- MEDIUM: ssl: move "server" keyword SSL options parsing to ssl_sock.c
- MEDIUM: log: suffix the frontend's name with '~' when using SSL
- MEDIUM: connection: always unset the transport layer upon close
- BUG/MINOR: session: fix some leftover from debug code
- BUG/MEDIUM: session: enable the conn_session_update() callback
- MEDIUM: connection: add a flag to hold the transport layer
- MEDIUM: log: add a new LW_XPRT flag to pin the transport layer
- MINOR: log: make lf_text use a const char *
- MEDIUM: log: report SSL ciphers and version in logs using logformat %sslc/%sslv
- REORG: http: rename msg->buf to msg->chn since it's a channel
- CLEANUP: http: use 'chn' to name channel variables, not 'buf'
- CLEANUP: channel: use 'chn' instead of 'buf' as local variable names
- CLEANUP: tcp: use 'chn' instead of 'buf' or 'b' for channel pointer names
- CLEANUP: stream_interface: use 'chn' instead of 'b' to name channel pointers
- CLEANUP: acl: use 'chn' instead of 'b' to name channel pointers
- MAJOR: channel: replace the struct buffer with a pointer to a buffer
- OPTIM: channel: reorganize struct members to improve cache efficiency
- CLEANUP: session: remove term_trace which is not used anymore
- OPTIM: session: reorder struct session fields
- OPTIM: connection: pack the struct target
- DOC: document relations between internal entities
- MINOR: ssl: add 'ssl_npn' sample/acl to extract TLS/NPN information
- BUILD: ssl: fix shctx build on older compilers
- MEDIUM: ssl: add support for the "npn" bind keyword
- BUG: ssl: fix ssl_sni ACLs to correctly process regular expressions
- MINOR: chunk: provide string compare functions
- MINOR: sample: accept fetch keywords without parenthesis
- MEDIUM: sample: pass an empty list instead of a null for fetch args
- MINOR: ssl: improve socket behaviour upon handshake abort.
- BUG/MEDIUM: http: set DONTWAIT on data when switching to tunnel mode
- MEDIUM: listener: provide a fallback for accept4() when not supported
- BUG/MAJOR: connection: risk of crash on certain tricky close scenario
- MEDIUM: cli: allow the stats socket to be bound to a specific set of processes
- OPTIM: channel: inline channel_forward's fast path
- OPTIM: http: inline http_parse_chunk_size() and http_skip_chunk_crlf()
- OPTIM: tools: inline hex2i()
- CLEANUP: http: rename HTTP_MSG_DATA_CRLF state
- MINOR: compression: automatically disable compression for older browsers
- MINOR: compression: optimize memLevel to improve byte rate
- BUG/MINOR: http: compression should consider all Accept-Encoding header values
- BUILD: fix coexistence of openssl and zlib
- MINOR: ssl: add pattern and ACLs fetches 'ssl_c_serial' and 'ssl_f_serial'
- BUG/MEDIUM: command-line option -D must have precedence over "debug"
- MINOR: tools: add a clear_addr() function to unset an address
- BUG/MEDIUM: tcp: transparent bind to the source only when address is set
- CLEANUP: remove trashlen
- MAJOR: session: detach the connections from the stream interfaces
- DOC: update document describing relations between internal entities
- BUILD: make it possible to specify ZLIB path
- MINOR: compression: add an offload option to remove the Accept-Encoding header
- BUG: compression: disable auto-close and enable MSG_MORE during transfer
- CLEANUP: completely remove trashlen
- MINOR: chunk: add a function to reset a chunk
- CLEANUP: replace chunk_printf() with chunk_appendf()
- MEDIUM: make the trash be a chunk instead of a char *
- MEDIUM: remove remains of BUFSIZE in HTTP auth and sample conversions
- MEDIUM: stick-table: allocate the table key of size buffer size
- BUG/MINOR: stream_interface: don't loop over ->snd_buf()
- BUG/MINOR: session: ensure that we don't retry connection if some data were sent
- OPTIM: session: don't process the whole session when only timers need a refresh
- BUG/MINOR: session: mark the handshake as complete earlier
- MAJOR: connection: remove the CO_FL_CURR_*_POL flag
- BUG/MAJOR: always clear the CO_FL_WAIT_* flags after updating polling flags
- MAJOR: sepoll: make the poller totally event-driven
- OPTIM: stream_interface: disable reading when CF_READ_DONTWAIT is set
- BUILD: compression: remove a build warning
- MEDIUM: fd: don't unset fdtab[].updated upon delete
- REORG: fd: move the speculative I/O management from ev_sepoll
- REORG: fd: move the fd state management from ev_sepoll
- REORG: fd: centralize the processing of speculative events
- BUG: raw_sock: also consider ENOTCONN in addition to EAGAIN
- BUILD: stream_interface: remove si_fd() and its references
- BUILD: compression: enable build in BSD and OSX Makefiles
- MAJOR: ev_select: make the poller support speculative events
- MAJOR: ev_poll: make the poller support speculative events
- MAJOR: ev_kqueue: make the poller support speculative events
- MAJOR: polling: replace epoll with sepoll and remove sepoll
- MAJOR: polling: remove unused callbacks from the poller struct
- MEDIUM: http: refrain from sending "Connection: close" when Upgrade is present
- CLEANUP: channel: remove any reference of the hijackers
- CLEANUP: stream_interface: remove the external task type target
- MAJOR: connection: replace struct target with a pointer to an enum
- BUG: connection: fix typo in previous commit
- BUG: polling: don't skip polled events in the spec list
- MINOR: splice: disable it when the system returns EBADF
- MINOR: build: allow packagers to specify the default maxzlibmem
- BUG: halog: fix broken output limitation
- BUG: proxy: fix server name lookup in get_backend_server()
- BUG: compression: do not always increment the round counter on allocation failure
- BUG/MEDIUM: compression: release the zlib pools between keep-alive requests
- MINOR: global: don't prevent nbproc from being redefined
- MINOR: config: support process ranges for "bind-process"
- MEDIUM: global: add support for CPU binding on Linux ("cpu-map")
- MINOR: ssl: rename and document the tune.ssl.cachesize option
- DOC: update the PROXY protocol spec to support v2
- MINOR: standard: add a simple popcount function
- MEDIUM: adjust the maxaccept per listener depending on the number of processes
- BUG: compression: properly disable compression when content-type does not match
- MINOR: cli: report connection status in "show sess xxx"
- BUG/MAJOR: stream_interface: certain workloads could cause get stuck
- BUILD: cli: fix build when SSL is enabled
- MINOR: cli: report the fd state in "show sess xxx"
- MINOR: cli: report an error message on missing argument to compression rate
- MINOR: http: add some debugging functions to pretty-print msg state names
- BUG/MAJOR: stream_interface: read0 not always handled since dev12
- DOC: documentation on http header capture is wrong
- MINOR: http: allow the cookie capture size to be changed
- DOC: http header capture has not been limited in size for a long time
- DOC: update readme with build methods for BSD
- BUILD: silence a warning on Solaris about usage of isdigit()
- MINOR: stats: report HTTP compression stats per frontend and per backend
- MINOR: log: add '%Tl' to log-format
- MINOR: samples: update the url_param fetch to match parameters in the path
It was a bit frustrating to have no idea about the bandwidth saved by
HTTP compression. Now we have per-frontend and per-backend stats. The
stats on the HTTP interface are shown in a hover title in the "bytes out"
column if at least something was fed to the compressor. 3 new columns
appeared in the CSV stats output.
It's been documented for a very long time that captured HTTP headers
were limited to 64 characters, but this has not the case anymore since
1.3.11 in 2007 (commit cf7f320f), as they all use their own pool and
have no such limit anymore.
This fix should be backported to 1.4 and 1.3.
Some users need more than 64 characters to log large cookies. The limit
was set to 63 characters (and not 64 as previously documented). Now it
is possible to change this using the global "tune.http.cookielen" setting
if required.
Since commit it is said that only the first value of the first occurrence
of a header is captured. This is wrong. Since the introduction of header
captures in version 1.1 in 2005 (commit e983144d), the WHOLE line of the
LAST occurrence has been captured and the behaviour has never changed.
At this time the doc was correct. The error was introduced in the new doc
in 1.3.14 in 2007 (commit 0ba27505).
So this fix should be backported to 1.4 and 1.3.
New option 'maxcompcpuusage' in global section.
Sets the maximum CPU usage HAProxy can reach before stopping the
compression for new requests or decreasing the compression level of
current requests. It works like 'maxcomprate' but with the Idle.
global.tune.maxaccept was used for all listeners. This becomes really not
convenient when some listeners are bound to a single process and other ones
are bound to many processes.
Now we change the principle : we count the number of processes a listener
is bound to, and apply the maxaccept either entirely if there is a single
process, or divided by twice the number of processes in order to maintain
fairness.
The default limit has also been increased from 32 to 64 as it appeared that
on small machines, 32 was too low to achieve high connection rates.
The doc updates covers the following points :
- description of protocol version 2
- discourage emission of UNKNOWN and encourage it acceptance
- clarify that each header must fit in an MSS and be sent at once
- provide an example of receiver code that explains how to use MSG_PEEK.
The new "cpu-map" directive allows one to assign the CPU sets that
a process is allowed to bind to. This is useful in combination with
the "nbproc" and "bind-process" directives.
The support is implicit on Linux 2.6.28 and above.
Now that all pollers make use of speculative I/O, there is no point
having two epoll implementations, so replace epoll with the sepoll code
and remove sepoll which has just become the standard epoll method.
commit 82fe75c1 provided useful details in its log message. We should report
part of them in the documentation to know which algorithms are available.
This patch also makes some formatting cleanups (including a line outside the
compression scope, which exceeded 80 chars).
This patch adds input and output rate calcutation on the HTTP compresion
feature.
Compression can be limited with a maximum rate value in kilobytes per
second. The rate is set with the global 'maxcomprate' option. You can
change this value dynamicaly with 'set rate-limit http-compression
global' on the UNIX socket.
With the global maxzlibmem option, you are able ton control the maximum
amount of RAM usable for HTTP compression.
A test is done before each zlib allocation, if the there isn't available
memory, the test fail and so the zlib initialization, so data won't be
compressed.
The window size and the memlevel of the zlib are now configurable using
global options tune.zlib.memlevel and tune.zlib.windowsize.
It affects the memory consumption of the zlib.
ssl_c_notbefore: start date of client cert (string, eg: "121022182230Z" for YYMMDDhhmmss[Z])
ssl_c_notafter: end date of client cert (string, eg: "121022182230Z" for YYMMDDhhmmss[Z])
ssl_f_notbefore: start date of frontend cert (string, eg: "121022182230Z" for YYMMDDhhmmss[Z])
ssl_f_notafter: end date of frontend cert (string, eg: "121022182230Z" for YYMMDDhhmmss[Z])
ssl_c_s_dn : client cert subject DN (string)
ssl_c_i_dn : client cert issuer DN (string)
ssl_f_s_dn : frontend cert subject DN (string)
ssl_f_i_dn : frontend cert issuer DN (string)
Return either the full DN without params, or just the DN entry (first param) or
its specific occurrence (second param).
This commit introduces HTTP compression using the zlib library.
http_response_forward_body has been modified to call the compression
functions.
This feature includes 3 algorithms: identity, gzip and deflate:
* identity: this is mostly for debugging, and it was useful for
developping the compression feature. With Content-Length in input, it
is making each chunk with the data available in the current buffer.
With chunks in input, it is rechunking, the output chunks will be
bigger or smaller depending of the size of the input chunk and the
size of the buffer. Identity does not apply any change on data.
* gzip: same as identity, but applying a gzip compression. The data
are deflated using the Z_NO_FLUSH flag in zlib. When there is no more
data in the input buffer, it flushes the data in the output buffer
(Z_SYNC_FLUSH). At the end of data, when it receives the last chunk in
input, or when there is no more data to read, it writes the end of
data with Z_FINISH and the ending chunk.
* deflate: same as gzip, but with deflate algorithm and zlib format.
Note that this algorithm has ambiguous support on many browsers and
no support at all from recent ones. It is strongly recommended not
to use it for anything else than experimentation.
You can't choose the compression ratio at the moment, it will be set to
Z_BEST_SPEED (1), as tests have shown very little benefit in terms of
compression ration when going above for HTML contents, at the cost of
a massive CPU impact.
Compression will be activated depending of the Accept-Encoding request
header. With identity, it does not take care of that header.
To build HAProxy with zlib support, use USE_ZLIB=1 in the make
parameters.
This work was initially started by David Du Colombier at Exceliance.
Using "stats bind-process", it becomes possible to indicate to haproxy which
process will get the incoming connections to the stats socket. It will also
shut down the warning when nbproc > 1.
Please consider the following patch for configuration.txt to clarify meaning
of bufsize, maxrewrite and the size of HTTP request which can be processed.
The ssl_npn match could not work by itself because clients do not use
the NPN extension unless the server advertises the protocols it supports.
Thanks to Simone Bordet for the explanations on how to get it right.
