File crossroads-stable.ChangeLog of Package crossroads-stable

File crossroads-stable.ChangeLog of Package crossroads-stable (Revision 7c27d254b341c437fa1191c42f3a4045)

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2.30 [KK 2008-10-25] 
- Reversioned to 2.30 in prepration for STABLE release.
- Bugfix in Netbuffer::netwrite() (debug output of written data)
- SIGPIPE gets ignored, see sys/main.cc
- Fixed re-entrancy issues for gethostbyname() that applies to some
  unices. See Backend::connect() (xr/backend/connect.cc).

2.22 [KK 2008-10-16]
- Implemented up/down state in back ends. Fixed up the docs.
- Rewrote msg() and debugmsg() handling: these are now macros that
  call _msg() and _debugmsg() depending on verbose/debug flags. The
  argument is a Mstr object, used to concatenate strings with ints,
  doubles and so on.

2.21 [KK 2008-10-14]
- Fixed round-robin dispatching with only 1 configured back end. The
  bug was that on the next-time around, no "other" back end would be
  found.
- Centralized reading/writing from fd's and buffer handling into class
  Netbuffer. This removes superfluous buffer copying in the HTTP
  dispatcher.
- Rewrote HTTP dispatcher & (hopefully) optimized it.  
- Added Profiler class and xr/etc/xrprof tool.  
- Many other small changes.
- Added docs on maxconn flags and weighted-load dispatching.
- THIS VERSION IS A REWRITE OF THE HTTP DISPATCHER. IT IS ALPHA-QUALITY.

2.20 [KK 2008-10-13]
- Fixed -C flag recognition, --close-sockets-fast worked, but I'd
  omitted -C from the flag set.
- Ongoing optimization work.

2.19 [KK 2008-10-13] 
- Changed the TCP Dispatcher to allow for setting a maximum #
  connection attempts per client, with options to either defer the
  connection or drop it. 
- Added a dispatch mdoe "weighted-load" for randomly picking a back
  end based on the inverse of their respective load averages.  (gem)
- Verbose/debug options in the web interface are now rendered as
  select boxes.
- Web interface errors are rendered on the client as an HTML error
  page.
- Docs updated regarding web interface URI's.
- Turned on compliler optimizing (had forgotten that before!)
- Docs updated regarding web interface URI's.

2.18 [KK 2008-10-08]
- Improved command line parsing, so that when --checkup-interval is
  used, suppression of "--wakeup-interval 0" is no longer needed.

2.17 [KK 2008-10-07]
- Type sizes reported in "xr -V"
- Fixed nasty bug in sys/fdwrite.cc

2.16 [KK 2008-10-05]
- Enhanced web interface to show debug, verbose and traffic log states
- Altering parameters for the web interface get sent in encoded form
- Option --log-traffic was renamed to --log-traffic-dir for
  consistency
- Enhanced web interface to modify client and back end timeouts
- Enhanced web interface to modify wakeup / checkup intervals.

2.15
- Sanity checks in Config::parsecmdline(): -w/-c together throws error.
- Network sends are now using write(), unless under Solaris, which
  uses send().
- --log-traffic logs to file with as the base name: the request
  number.
- System (uname) is recorded during compilation and displayed in "xr -V"

2.14 [KK 2008-09-30]
- Removed spurious debug message.
- Fixed usage info for buffer size flag (should be -B, not -b).
- Implemented flag -l (--log-traffic).

2.13 [KK 2008-09-17]
- Porting issues resolved for older MacOSX (10.3, 10.4)
- Bugfix in XML emitting of web interface. Most browsers didn't even notice..

2.12 [KK 2008-09-10]
- Small code changes for g++ v3.x backward-compatibility support.
  (Thanks Simon M.)
- Web interface: layout enhanced, more modification options
- Code cleanup, duplications removed
- Network sending ignores some errno's and retries (see
  sys/fdwrite.cc)
- Web interface retries binding to its socket (incase a previous
  instance hasn't terminated yet)
- Web interface returns an HTTP error page (status 500 only, no
  content) during errors

2.11 [KK 2008-09-04]
- Bugfix in "first-active" dispatch mode. Previously XR would gobble
  up fd's when no back end was available.
- Web interface (first version) implemented.

2.10 [KK 2008-09-02]
- Bugfix in host match mode. When a back end doesn't match anything,
  then the client isn't served. (Previously the dispatcher would fall
  back to least-connections over all known back ends.)
- In HTTP mode, a 502 error gets returned to the client when
  dispatching fails or when back end processing goes haywire. There is
  just one error page, 502 error header, 0 bytes content length.
- Implemented back end weights for least-connections dispatching.
- Bugfix in Backend::connect(): Socket gets closed when connecting fails.

2.09 [KK 2008-09-01]
--host-match code implemented

2.08 [KK 2008-08-31]
I'd forgotten to include the 'P' into the set of allowed flags
(--prefix-timestamp would work, -P not). Fixed.

2.07 [KK 2008-08-28]
Stupid bug in 2.06, sorry that 2.06 got out.. Fixed.

2.06 [KK 2008-08-27]
Upped c-conf to 1.14.
xrctl updated: 'ps' command format also suitable for SunOS.
New class Mutex implemented. Mutex-locks are now more fine-grained
(per one global or static).
Solaris9 port w/gcc 3.4.6 done.

2.05 [KK 2008-08-15]
Thrown errors now based on std::exeception.
"xr -V" shows compilation settings.
Code reorganized into directory hierarchy.

2.04 [KK 2008-08-11]
Mutex in Thread class is now a static.
Implemented dispatching algorithm "stored clent ip", in the variants
strict and lax.
Flag -n / --tryout implemented. Implemented in xrctl.

2.03 [KK 2008-08-10]
Updated docs regarding the mailing list.
Fixed verbose display upon accepting a client ("current back end
states").
Implemented dispatching algorithm "hashed client ip", in the variants
strict and lax.

2.02 [KK 2008-08-09] Changes to the Makefile & some sources to avoid
warnings under RHL (thanks, Simon M.).
Bytes processed by a back end is now administered in
TcpDispatcher::writechunk() and not readchunk(). Reason: In HTTP mode,
the target back end is not yet known upon the first read -- the first read
from the client comes before dispatching. Thanks Simon M. for the bug
report.
All select()'s now check for errno==EINTR, incase XR gets a signal -1
(for status report).

2.01 [KK 2008-08-08] Implemented flag -C (--close-sockets-fast): this
option *can* be used under heavy stress when too many network sockets
remain in TIME_WAIT state (try with 'netstat -n | grep TIME_WAIT').
Syntax of xrctl is checked upon "make commit".
Added documentation about Solaris tcp_time_wait_interval and Linux
ip_conntrack_max.
Added documentation about binding XR to the same port, using different
bind-to IP's.

2.00 [KK 2008-08-07] Release of 2.00.