blob: c3c20461cfbb5c9db19a5559829b234b0d702b17 [file] [log] [blame]
ChangeLog :
===========
2003/10/27 : 1.1.27
- the configurable HTTP health check introduced in 1.1.23 revealed a shameful
bug : the code still assumed that HTTP requests were the same size as the
original ones (22 bytes), and failed if they were not.
- added support for pidfiles.
2003/10/22 : 1.1.26
- the fix introduced in 1.1.25 for client timeouts while waiting for servers
broke almost all compatibility with POST requests, because the proxy
stopped to read anything from the client as soon as it got all of its
headers.
2003/10/15 : 1.1.25
- added the 'tcplog' option, which provides enhanced, HTTP-like logs for
generic TCP proxies, or lighter logs for HTTP proxies.
- fixed a time-out condition wrongly reported as client time-out in data
phase if the client timeout was lower than the connect timeout times the
number of retries.
2003/09/21 : 1.1.24
- if a client sent a full request then shut its write connection down, then
the request was aborted. This case was detected only when using haproxy
both as health-check client and as a server.
- if 'option httpchk' is used in a 'health' mode server, then responses will
change from 'OK' to 'HTTP/1.0 200 OK'.
- fixed a Linux-only bug in case of HTTP server health-checks, where a single
server response followed by a close could be ignored, and the server seen
as failed.
2003/09/19 : 1.1.23
- fixed a stupid bug introduced in 1.1.22 which caused second and subsequent
'default' sections to keep previous parameters, and not initialize logs
correctly.
- fixed a second stupid bug introduced in 1.1.22 which caused configurations
relying on 'dispatch' mode to segfault at the first connection.
- 'option httpchk' now supports method, HTTP version and a few headers.
- now, 'option httpchk', 'cookie' and 'capture' can be specified in
'defaults' section
2003/09/10 : 1.1.22
- 'listen' now supports optionnal address:port-range lists
- 'bind' introduced to add new listen addresses
- fixed a bug which caused a session to be kept established on a server till
it timed out if the client closed during the DATA phase.
- the port part of each server address can now be empty to make the proxy
connect to the server on the same port it was connected to, be an absolute
unsigned number to reflect a single port (as in older versions), or an
explicitly signed number (+N/-N) to indicate that this offset must be
applied to the port the proxy was connected to, when connecting to the
server.
- the 'port' server option allows the user to specify a different
health-check port than the service one. It is mandatory when only relative
ports have been specified and check is required. By default, the checks are
sent to the service port.
- new 'defaults' section which is rather similar to 'listen' except that all
values are only used as default values for future 'listen' sections, until
a new 'defaults' resets them. At the moment, server options, regexes,
cookie names and captures cannot be set in the 'defaults' section.
2003/05/06 : 1.1.21
- changed the debug output format so that it now includes the session unique
ID followed by the instance name at the beginning of each line.
- in debug mode, accept now shows the client's IP and port.
- added one 3 small debugging scripts to search and pretty print debug output
- changed the default health check request to "OPTIONS /" instead of
"OPTIONS *" since not all servers implement the later one.
- "option httpchk" now accepts an optional parameter allowing the user to
specify and URI other than '/' during health-checks.
2003/04/21 : 1.1.20
- fixed two problems with time-outs, one where a server would be logged as
timed out during transfer that take longer to complete than the fixed
time-out, and one where clients were logged as timed-out during the data
phase because they didn't have anything to send. This sometimes caused
slow client connections to close too early while in fact there was no
problem. The proper fix would be to have a per-fd time-out with
conditions depending on the state of the HTTP FSM.
2003/04/16 : 1.1.19
- haproxy was NOT RFC compliant because it was case-sensitive on HTTP
"Cookie:" and "Set-Cookie:" headers. This caused JVM 1.4 to fail on
cookie persistence because it uses "cookie:". Two memcmp() have been
replaced with strncasecmp().
2003/04/02 : 1.1.18
- Haproxy can be compiled with PCRE regex instead of libc regex, by setting
REGEX=pcre on the make command line.
- HTTP health-checks now use "OPTIONS *" instead of "OPTIONS /".
- when explicit source address binding is required, it is now also used for
health-checks.
- added 'reqpass' and 'reqipass' to allow certain headers but not the request
itself.
- factored several strings to reduce binary size by about 2 kB.
- replaced setreuid() and setregid() with more standard setuid() and setgid().
- added 4 status flags to the log line indicating who ended the connection
first, the sessions state, the validity of the cookie, and action taken on
the set-cookie header.
2002/10/18 : 1.1.17
- add the notion of "backup" servers, which are used only when all other
servers are down.
- make Set-Cookie return "" instead of "(null)" when the server has no
cookie assigned (useful for backup servers).
- "log" now supports an optionnal level name (info, notice, err ...) above
which nothing is sent.
- replaced some strncmp() with memcmp() for better efficiency.
- added "capture cookie" option which logs client and/or server cookies
- cleaned up/down messages and dump servers states upon SIGHUP
- added a redirection feature for errors : "errorloc <errnum> <url>"
- now we won't insist on connecting to a dead server, even with a cookie,
unless option "persist" is specified.
- added HTTP/408 response for client request time-out and HTTP/50[234] for
server reply time-out or errors.
2002/09/01 : 1.1.16
- implement HTTP health checks when option "httpchk" is specified.
2002/08/07 : 1.1.15
- replaced setpgid()/setpgrp() with setsid() for better portability, because
setpgrp() doesn't have the same meaning under Solaris, Linux, and OpenBSD.
2002/07/20 : 1.1.14
- added "postonly" cookie mode
2002/07/15 : 1.1.13
- tv_diff used inverted parameters which led to negative times !
2002/07/13 : 1.1.12
- fixed stats monitoring, and optimized some tv_* for most common cases.
- replaced temporary 'newhdr' with 'trash' to reduce stack size
- made HTTP errors more HTML-fiendly.
- renamed strlcpy() to strlcpy2() because of a slightly difference between
their behaviour (return value), to avoid confusion.
- restricted HTTP messages to HTTP proxies only
- added a 502 message when the connection has been refused by the server,
to prevent clients from believing this is a zero-byte HTTP 0.9 reply.
- changed 'Cache-control:' from 'no-cache="set-cookie"' to 'private' when
inserting a cookie, because some caches (apache) don't understand it.
- fixed processing of server headers when client is in SHUTR state
2002/07/04 :
- automatically close fd's 0,1 and 2 when going daemon ; setpgrp() after
setpgid()
2002/06/04 : 1.1.11
- fixed multi-cookie handling in client request to allow clean deletion
in insert+indirect mode. Now, only the server cookie is deleted and not
all the header. Should now be compliant to RFC2965.
- added a "nocache" option to "cookie" to specify that we explicitly want
to add a "cache-control" header when we add a cookie.
It is also possible to add an "Expires: <old-date>" to keep compatibility
with old/broken caches.
2002/05/10 : 1.1.10
- if a cookie is used in insert+indirect mode, it's desirable that the
the servers don't see it. It was not possible to remove it correctly
with regexps, so now it's removed automatically.
2002/04/19 : 1.1.9
- don't use snprintf()'s return value as an end of message since it may
be larger. This caused bus errors and segfaults in internal libc's
getenv() during localtime() in send_log().
- removed dead insecure send_syslog() function and all references to it.
- fixed warnings on Solaris due to buggy implementation of isXXXX().
2002/04/18 : 1.1.8
- option "dontlognull"
- fixed "double space" bug in config parser
- fixed an uninitialized server field in case of dispatch
with no existing server which could cause a segfault during
logging.
- the pid logged was always the father's, which was wrong for daemons.
- fixed wrong level "LOG_INFO" for message "proxy started".
2002/04/13 :
- http logging is now complete :
- ip:port, date, proxy, server
- req_time, conn_time, hdr_time, tot_time
- status, size, request
- source address
2002/04/12 : 1.1.7
- added option forwardfor
- added reqirep, reqidel, reqiallow, reqideny, rspirep, rspidel
- added "log global" in "listen" section.
2002/04/09 :
- added a new "global" section :
- logs
- debug, quiet, daemon modes
- uid, gid, chroot, nbproc, maxconn
2002/04/08 : 1.1.6
- regex are now chained and not limited anymore.
- unavailable server now returns HTTP/502.
- increased per-line args limit to 40
- added reqallow/reqdeny to block some request on matches
- added HTTP 400/403 responses
2002/04/03 : 1.1.5
- connection logging displayed incorrect source address.
- added proxy start/stop and server up/down log events.
- replaced log message short buffers with larger trash.
- enlarged buffer to 8 kB and replace buffer to 4 kB.
2002/03/25 : 1.1.4
- made rise/fall/interval time configurable
2002/03/22 : 1.1.3
- fixed a bug : cr_expire and cw_expire were inverted in CL_STSHUT[WR]
which could lead to loops.
2002/03/21 : 1.1.2
- fixed a bug in buffer management where we could have a loop
between event_read() and process_{cli|srv} if R==BUFSIZE-MAXREWRITE.
=> implemented an adjustable buffer limit.
- fixed a bug : expiration of tasks in wait queue timeout is used again,
and running tasks are skipped.
- added some debug lines for accept events.
- send warnings for servers up/down.
2002/03/12 : 1.1.1
- fixed a bug in total failure handling
- fixed a bug in timestamp comparison within same second (tv_cmp_ms)
2002/03/10 : 1.1.0
- fixed a few timeout bugs
- rearranged the task scheduler subsystem to improve performance,
add new tasks, and make it easier to later port to librt ;
- allow multiple accept() for one select() wake up ;
- implemented internal load balancing with basic health-check ;
- cookie insertion and header add/replace/delete, with better strings
support.
2002/03/08
- reworked buffer handling to fix a few rewrite bugs, and
improve overall performance.
- implement the "purge" option to delete server cookies in direct mode.
2002/03/07
- fixed some error cases where the maxfd was not decreased.
2002/02/26
- now supports transparent proxying, at least on linux 2.4.
2002/02/12
- soft stop works again (fixed select timeout computation).
- it seems that TCP proxies sometimes cannot timeout.
- added a "quiet" mode.
- enforce file descriptor limitation on socket() and accept().
2001/12/30 : release of version 1.0.2 : fixed a bug in header processing
2001/12/19 : release of version 1.0.1 : no MSG_NOSIGNAL on solaris
2001/12/16 : release of version 1.0.0.
2001/12/16 : added syslog capability for each accepted connection.
2001/11/19 : corrected premature end of files and occasional SIGPIPE.
2001/10/31 : added health-check type servers (mode health) which replies OK then closes.
2001/10/30 : added the ability to support standard TCP proxies and HTTP proxies
with or without cookies (use keyword http for this).
2001/09/01 : added client/server header replacing with regexps.
eg:
cliexp ^(Host:\ [^:]*).* Host:\ \1:80
srvexp ^Server:\ .* Server:\ Apache
2000/11/29 : first fully working release with complete FSMs and timeouts.
2000/11/28 : major rewrite
2000/11/26 : first write