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-- Fix Test::More 0.94 (Which is our required version) testing problems.
(Jonathan Steinert <hachi@kuiki.net>)
-- Fix (loopback/localhost) connection failures on some BSD machines.
(Jonathan Steinert <hachi@kuiki.net>)
1.80: 2012-02-26
-- FLV streaming plugin (Gosuke Miyashita <gosukenator@gmail.com>)
-- New Throttle plugin (Adam Thomason <thomason@reticulatedsplines.net>)
-- Force keepalives off when we haven't finished reading a request body, but we
are already sending a response. (Jonathan Steinert <hachi@kuiki.net>)
-- Add support for Content-MD5 checking on PUT requests to web server services.
(Eric Wong <normalperson@yhbt.net>)
-- Include an XFFExtras plugin that can add X-Forwarded-Port and X-Forwarded-Proto
headers to help proxy backends construct canonical URLs with less configuration.
(RT 60260) (Jonathan Steinert <hachi@kuiki.net>)
-- Fix perlbal-check's age calculation to get the maximum age of queues across all
Perlbals. (Abe Hassan <ahassan@saymedia.com>)
-- Add DEFAULT command to allow setting default values for later service tunables
(Mark Smith <mark@qq.is>)
-- Change IO::Socket::SSL version requirement error to reflect what we actually
require. (Jonathan Steinert <hachi@kuiki.net>)
-- Completely redo the deps list for perlbal. This addresses an issue exposed when
LWP was split into component modules (RT 68490) , plus other subtle issues we've
been ignoring or unaware of. (Jonathan Steinert <hachi@kuiki.net>)
-- Stop loading Storable, we don't use it (Jonathan Steinert <hachi@kuiki.net>)
-- Switch Devel::Peek to an optional requirement (Jonathan Steinert <hachi@kuiki.net>)
-- Change perlbal-check to use IO::Socket::INET, not just IO::Socket
(Jonathan Steinert <hachi@kuiki.net>)
-- Can use PERLBAL_REMOVE_FIELDS=1 to disable fields and improve performance
(Nicolas Rochelemagne <nicolas.rochelemagne@cpanel.net>)
-- Optimize handling of SET for bool values
(Nicolas Rochelemagne <nicolas.rochelemagne@cpanel.net>)
1.79: 2011-06-15
-- Make SSL sockets time out if they go stale, like we claimed was
fixed two versions ago, but this time we also clean up the FDs too.
(Jonathan Steinert <hachi@kuiki.net>)
-- fix DELETE's failing if using IO::AIO 3.7 or newer (dormando <dormando@rydia.net>)
-- ship perlbal-check with perlbal. (dormando <dormando@rydia.net>)
1.78: 2011-01-22
-- Fix corruption of idle socket handlers introduced by SSL fix in 1.77.
1.77: 2011-01-15
-- Import of the documentation project:
http://news.perlfoundation.org/2010/12/perlbal-documentation---final.html
(José Castro and Bruno Martins)
-- Make SSL sockets time out if they go stale during SSL negotiation. Fixes a
visible socket/object leak that slows down the server.
-- Refactor socket cleanup, might work better in environments that embed Perlbal.
1.76: 2010-06-17
-- Allow "0" as a HEADER ADD/SET value (Andreas Koenig)
-- Cap our read buffers before AIO file operations to 1MB, this will prevent
memory over-use on systems with slow disks for PUT, or buffered upload temp
files. Assuming you system is fast enough to keep up with the writes this
will not harm upload speeds.
1.75: 2010-04-02
-- Stop doubleforking on daemonization. Seems useless and triggered a bug
with newer IO::AIO's.
-- Fix tests on OSX. (plugin loader doesn't play nicely with a case-
insensitive filesystem)
-- added links to http://contributing.appspot.com/perlbal
1.74: 2010-03-20
-- Change headers->headers_list method to return original case for PP
-- Add Slaven Rezic's SSL Client cert verification patch.
-- Change all the example configs to use a lower port
(Andreas J Koenig <andreas.j.koenig@gmail.com>)
-- Fix typo in help for MIME command (Jeremy James <jeremy.james@gmail.com>)
-- Allow HEADER command on all service roles
-- Switch Redirect plugin to use ->send_full_response, which fixes
keep-alive handling for this plugin.
-- Add a ClientHTTPBase method ->send_full_response, which is intended
as a plugin's interface to send full http responses back while still
having perlbal handle things like keepalives correctly.
-- Make keep-alive results during reproxy work even if the initial
response doesn't have a content-length.
-- Fix SSL socket close race crash. (Jab <jk@ciphron.de>)
-- Make service selectors have the 'observed_ip' concept available to
them.
-- Add extra_config awareness for plugin added tunables to dumpconfig.
-- Plugins may now use the $set argument of add_tunable's interface
to automatically set an extra_config value from within a setter
override. Previously this would result in an error.
-- Split the persist_client_timeout into two other options;
persist_client_idle_timeout and idle_timeout. Depricate and
add compatability for the old option.
-- Silence a warning in PERLBAL_DEBUG >= 4 that we really don't
need to see.
-- Fix chained service selectors to have their 'start_http_request'
hook to be called.
-- Fix reproxy to not skip urls when the previous URL is a 'failure'
HTTP status response. IE. don't skip the second url when the first
one is a 404.
-- Don't require a space after the HTTP status in responses. In some
situations a server may not give it.
-- Perlbal::log should act the same whether it is calling syslog or
printf. Make it a little more DWIM.
-- Let's make SSL clients work with service selectors, and even
chained service selectors, when serving static files.
-- Fix a fields glitch in Perlbal::Cache which would sometimes
cause errors and abnormal shutdown.
1.73: 2009-10-05
-- Add 'dumpconfig' command and related framework.
*** BETA FEATURE STATUS ***
-- Fix obscure race condition (spontaneously closed keepalives
after POST requests, Andreas J Koenig)
-- make Perlbal::Test be more robust and only use free ports.
(Bart van der Schans <herengracht@gmail.com>)
-- Make Content-Range replies work (Ask Bjørn Hansen)
-- Make Redirect plugin more standards compliant (Ask Bjørn Hansen)
-- Fix X-REPROXY-FILE to work with SSL connections (Greg Denton)
-- Syslog as 'crit' rather than 'critical' (noticed by Richard Bronosky)
-- Allow zero byte PUT requests (in normal PUT situations)
-- Fix for serving files from the filesystem over SSL (Greg Denton)
-- Beginnings of IPv6 support. You can now set 'listen' to just a port
number and if you have IPv6 setup, have IO::Socket::INET6, and have
Danga::Socket 1.61, it'll listen on both IPv6 and IPv4 on that port.
(the equivalent to 0.0.0.0). By default, with the old required syntax
of 'listen' being n.n.n.n:port, that'll force IPv4 mode and there are
no changes. Even without IPv6 support, you can now listen on a port
without specifying e.g. 0.0.0.0:80. Currently unimplemented: listening
on specific IPv6 addresses, connecting to IPv6 backends, etc.
(Brad Fitzpatrick <brad@danga.com>)
-- support filenames with +'s in webserver mode (Jordi Funollet).
-- change the VHost plugin to treat 'www.example.com.' and
'www.example.com' the same. (Ask)
-- silence warnings when things that look like variables on comment lines
in config input.
-- silence warnings from mgmt system when showing an object that doesn't
have a listening socket.
-- don't fail on t/90-accesscontrol.t if Net::Netmask isn't
installed. (Boris Zentner <bzm@2bz.de>)
1.72: 2008-09-21
-- Removed version check in Plugin/Include.pm
-- No other changes; fixing CPAN upload.
1.71: 2008-09-13
-- SECURITY: Remote crash reported by Dan Conlon, patched perlbal to send
error on negative content length to prevent this.
-- Move manage_multi() from test script into Perlbal::Test class.
-- Add documentation to Perlbal::Test.
-- Fix building the package on debian.
-- Lots of typo corrections in documentation and comments from Nick Andrew
-- Add SERVER crash_backtrace= setting, to make a crash of perlbal report
a backtrace along with the error message.
-- Add backend_send_verify and backend_read_verify hooks to make custom
verification methods possible.
-- Add BackendHTTP method 'verify_success' and adjust code to follow
this. Intended for use with the above hooks.
-- Add a 'scratch' field to BackendHTTP objects so plugins can store
per-backend scratch data.
1.70: 2008-03-08
-- SECURITY: patch from Jeremey James <jbj@forbidden.co.uk> to not crash
on zero byte chunked upload when buffered uploads are enabled.
-- on successful write, update Perlbal::Socket's alive_time, so slowly
reproxied writes don't timeout the connection and kill it. Patch
from Jonty <jonty@last.fm>. r765
-- Perl 5.10 support. Patch from Andy Armstrong <andy@hexten.net>.
Disclaimer: at least the tests all pass now, but no real-world use yet.
Should be fine, though. Please report your success to the mailing list
and/or brad@danga.com.
-- Add Include plugin by Eamon Daly <edaly@nextwavemedia.com>; plugin
allows you to use "INCLUDE = /etc/conf.d/*" or "INCLUDE = /foo.conf"
to bring in more config; can be nested.
-- SECURITY: Previously a single upward directory traversal was possible
when concat get was enabled. This behavior has been fixed in code to
match with standard file serving.
-- Fix 'No such pseudo-hash field "high_priority"' issue in Stats plugin
(Eamon Daly and Jonty Wareing)
-- Support for "anonymous services", for API callers that really don't
care what their service is called but just want to get hold of a
Service object. These aren't really anonymous, but they have suitably
ugly names that no sane human should ever conflict with them.
-- add some new methods that make it a little nicer to embed Perlbal
in another application that uses Danga::Socket. Some refactoring
was done to avoid duplicate code between the "end-user" way and the
API way.
-- Chained selectors. from Jeremy James <jbj@forbidden.co.uk>.
-- add "cgilike" plugin which offers a simple API very loosely based on
mod_perl for handling responses
-- add HTTPHeaders method set_request_uri so plugins can modify the uri
being requested
-- access control test
-- add option to AccessControl plugin to use observed_ip_string instead
-- add observed_ip_string method to perlbal sockets, allowing http
connections to set an observed ip string when an upstream proxy is
trusted.
-- add blind_proxy option, which disables appending to the end of the
X-Forwarded-For header when connections arrive from a trusted proxy.
-- make socket closing more verbose when Perlbal::DEBUG is set
-- verify_backend_path configuration option
-- don't overwrite $^P, allows use of perl debugger on perlbal.
1.60: 2007-10-23
-- accept LFLF to end HTTP request headers, instead of just
CRLFCRLF. easier monitoring with netcat & other popular
webservers accept LFLF anyway. (Paul Baker)
-- SHUTDOWN GRACEFUL [timeout] - now accepts optional timeout
parameter to force shutdown after that period in seconds
-- make SSL non-blocking
-- make persist_client_timeout service tunable apply to the max_idle_time
value used to kill sockets that are idle
-- add Vpath plugin for selectors; can select on URI regex now
-- add ability to set default_service on selector services; any
request that is not caught by a selector plugin instead gets
routed to the defined default service
-- add MIME [ LIST | REMOVE <ext> | SET <ext> <mime> ] command for
managing the internal list of mime-types
-- return an error when trying to use HEADER command on a
service that isn't of role reverse_proxy
-- add hook to attach when a service selector is getting a client
returned to it.
-- fixed huge memory leak in Stats plugin
-- Fix t/15-webserver.t to not fail once in a while (timing glitch)
-- Fix handling of a proxy response that doesn't have a Reason-Phrase
on the HTTP status line.
-- Update 'queues' management command to output information about low
priority queue, now that we use it.
-- the buffered upload rate test should pass more reliably now. some
people reported it sporadically (or often) failing before
-- new per-service configuration value: persist_client_timeout -
timeout in seconds for HTTP keep-alives to the end user
(defaults to 30 seconds)
-- new server configuration value: pidfile - for managing an internal
pidfile.
1.59: 2007-05-22
-- only call die_gracefully on a socket if it CAN die_graceully. fixes
shutdown graceful on mogstored, which has things betsides subclasses
of Perlbal::Socket in its Danga::Socket event loop
-- WARNING: removed Linux::AIO support. go get IO::AIO 1.6 at least if
you use webserver mode or reproxy files or do buffered uploads.
1.58: 2007-05-11
-- plugin reload support, if plugin supports it. plugin must implement
sub can_reload { 1 }
and optionally:
sub pre_reload_unload { ... }
(which is called before the ->unload, module reload, and ->load)
new management command is:
reload <plugin_name>
1.57: 2007-04-26
-- make ClientHTTP (webserver mode) support transfer-encoding
"chunked" PUTs, when PUTs are already enabled. useful
for things like MogileFS, where writing clients may not
know the final length ahead of time to predeclare in the
Content-Length request header.
-- Add the client_ip to the X-Forwarded-For header when the
upstream is "trusted" (Ask Bjoern Hansen).
1.56: 2007-04-16
-- make HTML proper in ClientManage interface Jacques Marneweck
<jacques@powertrip.co.za>
-- fix "make test" on OS X. Radu Greab <radu@yx.ro> and
Chuck Remes <cremes.devlist@mac.com> fixed & confirmed.
-- let accesscontrol plugin have a new match action, "queue_low",
to make a match force a request onto the low-priotity queue.
this match action is in addition to the two previous ones
(allow and deny).
-- start of work on making BackendHTTPs be abstract, dispatching
to a child process over a socketpair which speaks HTTP on
stdin/stdout. Unfinished. To be polished in future.
-- new hook "make_low_priority", like "make_high_priority"
1.55: 2007-03-21
-- add plugin that returns 304 automatically on incoming requests
with If-Modified-Since header and matching a regular expression
on the Host header. (for hostnames serving immutable resources,
where if client has ANY version, it's the correct one.) see:
example conf at conf/not-modified-plugin.conf
-- do HEAD to reproxied hosts, if client did a HEAD (Radu Greab
<radu@yx.ro>)
-- fix race+crash in buffered upload writing/purging
1.54: 2007-02-05
-- supported for "Transfer-Encoding: chunked" requests (HTTP/1.1 feature)
as well as the "Expect: 100-continue", which generally accompany
chunked requests. requires "buffered_uploads" be enabled. see
doc/http-versions.txt for details.
1.53: 2006-12-05
-- fix a crash as reported on mailing lists, with backends not
releasing references to clientproxies when coming through
service selectors, and backends then timing out, crashing
the server.
-- if backend sends x-reproxy-url and HTTP 204 No Content, upgrade
that to a 200 when sending to the client.
-- let non-Perlbal::Socket Danga::Socket objects exist without
crashing in cleanup handler (allows use of Gearman::Client::Async
in plugins)
1.52: 2006-11-13
-- fix crash in buffered uploads when *::AIO doesn't write everything
to disk that's requested of it. we were unshifting back onto the
write queue a scalar, not a scalarref.
-- AIO channels. from the code:
"prevents all AIO threads from being consumed by requests for same
failing/overloaded disk by isolating them into separate 'channels' in
parent process and not dispatching more than the max in-flight count
allows. think of a channel as a named queue. or in reality, a disk."
-- allow setting of SO_SNDBUF on a per-service level
1.51: 2006-10-04
-- set alive_time during slow PUTs. was causing problems
replicating large files in mogile, hitting fake idle timeout.
-- pipelining HTTP injection fix.
-- include Host header to reproxy backends
patch by Jonty Wareing <jonty.wareing@gmail.com>
1.50: 2006-09-08
-- add in optional Devel::Gladiator usage for memory tracking
-- fix memory leaks in concatenanted GETs on error cases
-- fixes to run / run better on OS X (Artur Bergman)
1.49: 2006-08-30
-- Very basic help hints command, simply dumps all possible commands.
-- Add another statistic for reproxy caches, the current size of a particular
service's cache, maximum size, and fill percentage.
1.48: 2006-08-18
-- optionally cache in-process the results of X-Reproxy-URL reponses
1.47: 2006-08-15
-- concatenanted GETs sent 304 Not Modified w/ content-lengths. should
be without. fixed. also including t/17-webserver-concat which forgot
to be checked into svn/MANIFEST earlier
1.46: 2006-08-10
-- fix Mart's broken win32 support that broke Unix, part 2: syslog when
daemonized. TODO: test case should test daemonization mode.
1.45: 2006-08-10
-- fix Mart's broken win32 support that broke Unix. TODO: test to raise/check
fd limit so this doesn't happen again on unix.
1.44: 2006-08-10
-- allow a no-op ?foo at the end of concatenated-get URLs, so they'd be of
the form: http://host/dir??file1,file2,file3?noopsection. the no-op
section is good for cache-busting, putting in, say, the modtime of the
newest file, forcing browsers like safari (who over-cache) to reload.
-- set a mime-type other than text/plain on concatenated-get requests,
only falling back to text/plain if none of files have a known mime type.
in practice a request is all css or all js, so match is found by looking
at 1st file. this is required since mozilla won't show CSS if not text/css.
-- actually be able to start up using 'perlbal' command. test
suite passed before, but moving $VERSION into Perlbal.pm
had quitely broke it all.
1.43: 2006-08-09
-- there's a case where offset gets past end of file in static file
code, but very rarely. sendfile handles this w/ an error that
we dealt with, but the new readahead code didn't and crashed.
working around for now, until root cause is found for offset
going past.
-- eliminate some warnings in error cases. only really affects noise
in test suite
-- work better on win32
-- added the ability for plugins to create custom service roles and
add custom configuration options to services, demo is available
as conf/echoservice.conf and lib/Perlbal/Plugin/EchoService.pm
1.42: 2006-08-03
-- debug management command 'varsize' to track size of internal
data structures, to make sure none get out of control.
there's a report that CPU/mem grow slowly over time, and after
a month or so of uptime, a restart is needed. this might help
diagnose that.
-- allow expansion/interoplation of stuff in config files/commands.
for now just mapping network device names to IP addresses:
SET listen = ${ip:eth0}:80
-- more hooks as requested by community
-- concatenated get feature. where a client have use a
comma-separated list of files to return, always in text/plain.
Useful for webapps which have dozens/hundreds of tiny css/js
files, and don't trust browsers/etc to do pipelining.
Decreases overall roundtrip latency a bunch, but requires app
to be modified to support it. See t/17-concat.t test for
details.
-- do AIO readahead before sendfile to reduce blocking caused
by disk reads from sendfile. increases throughput. see:
http://brad.livejournal.com/2228488.html
-- add 'latency' configuration on selector roles
1.41: 2006-02-06
-- IE sends a request header like "If-Modified-Since: <DATE>;
length=<length>" so we have to remove the length bit before
comparing it with our date then we save the length to compare
later.
-- support for reproxying to a named service. if backend returns
"X-Reproxy-Service: <name>" and no content, the entire original
client GET/HEAD request is re-sent to the new named service.
the "enable_reproxy" option has to be enabled for the original
service.
1.40: 2006-01-17
-- support for optional retrying of requests after a 500 error,
so user won't see the 500 error. boolean option, as well
as configurable schedule of how often to retry backends.
-- clean up directory indexing HTML: Mark Smith and Fred Moyer
(fred@redhotpenguin.com)
1.39: (beta for 1.40) 2005-10-26
-- new feature for virtual host plugin: the Host header can be trumped
by a magical URL form, if allowed in config. for instance, you can
make an HTTP request to host "foo.com" but actually get "bar.com"
if you do this:
VHOST foo.com;using:bar.com = bar
and request /__using/bar.com/IDENT from foo.com, where IDENT is
just \w+. perlbal then updates the Host record to bar.com and
sends request URI (unaltered) to the "bar" service.
this is useful for circumventing browser host restrictions (java,
javascript, flash, etc...) when you actually control both
domains.
1.38: (beta for 1.40) 2005-10-19
-- some paranoia evals around some parts of buffered uploads that
SAPO reported crashes in occasionally. added FIXMEs to investigate
too. for now, though, evals around closing files is safer.
-- new feature: inter-perlbal upload tracking. for fancy upload
bars driven by XmlHttpRequest when clients are upload large files
-- WARNING: reproxying (files or URLs) is now disabled by default,
and must be enabled per-service with "enable_reproxy = true"
-- do a final little read before closing an HTTP connection
to make sure we have no unread data in kernel (notably
an extra "\r\n" from an IE post), so when we do close, we
don't send a RST packet to the end user. Thanks to Kevin
Lewandowski from discogs.com for the bug report.
-- use Danga::Socket's AddTimer interface to disconnect
stale persistent connections every 5 seconds, driven by
a timer, rather than every 15 seconds, driven by
socket creation.
-- there was a bug where 304 Not Modified responses would
cause a connection close (and thus RST packets) even
though keep-alive was negotiated and would've worked
-- ignore URL arguments when doing directory indexing
-- work a little better under "trickle". (but still not perfect...
trickle doesn't quite work on Perlbal, unfortunately. it's useful,
or would've been useful, for testing some parts...)
-- avoid an occasional warning with dirindexing on unreadable directories
1.37 (beta for 1.40) 2005-08-29
-- "use <name>" command to set the direct object for future commands
-- AccessControl plugin to allow/deny by default or on IPs or
netmasks.
-- ClientManage could spin in its inherited event_write, causing
99.9% cpu usage. Bug is arguably Danga::Socket's, but also
ours because it's documented what we should do and we didn't.
The fix is to shut down watching writability when we're done
writing.
-- make accept_client and its callers deal with the possibility
that accept_client fails not because the backend is bogus, but
because the client is. so now accept_client can close the
client and callers have to be aware of that.
-- after running this version on production on LiveJournal.com for
a bit, we discovered some cases that we'd flag as should never happen,
but actually do, so updated the comments and behavior to
do the right thing and not just crash with an assertion.
-- fix misspellings of trusted_upstream_proxies that didn't
come along for the renaming ride earlier
-- webserver mode now ignores URL arguments when looking up
filename
-- remove warnings accessing undefs in ranges and vhosts
-- new --version and --help flags. also a usage message on bogus
options (or when --help). props to Jacques Marneweck
<jacques@powertrip.co.za> for the help and motivation.
1.36 (beta for 1.40) 2005-08-19
-- fix bug in ClientProxy when user disconnects after POST/PUTing
a content body, but before a response comes back.
-- now checks correctly for Danga::Socket version 1.44 or above.
(required version was in quotes, confusing perl.)
-- vhost plugin: strip off port specification from the Host header
before trying to match with configured patterns.
1.35: (beta of 1.40) 2005-08-16
-- beta SSL support in a few lines of code. maybe it's completely
done. maybe it's barely done. But it seems to work? I'm no
SSL master... IO::Socket::SSL just made it so easy.
-- lots more tests
-- lots more cleanup
-- fix potential crashing bugs in the PUT path. luckily ones we
never hit.
-- lots and lots of code cleanup
-- load plugins by either the exact case specified, all lowercase,
or all lowercase with first letter uppercase. then remember
the case for unloading (which was never implemented?)
-- reorganize/cleanup code related to stalling the backend due to
client's buffer size exceeding one of the two limits.
introduce "backend_stalled"
-- buffer uploads to disk
1.3: (2005-06-26)
-- introduce CommandContext, so management commands can be less
verbose when in config files (service/pool names can be left off
when you just created them a couple lines before)
-- remove sendstats support
-- exit with 0 vs non-zero when/if Perlbal crashes. new command
"crash" to fake a crash, for testing.
-- entirely redone management command parsing/dispatching (major
code cleanup)
-- virtual host plugin on service selector framework
-- service selector framework
-- make Net::Netmask optional
-- byte range support for both webserver mode and reproxy-file mode
Giao Phan <giao@guba.com>. so clients can resume large transfers.
-- test suite
-- IO::AIO support (brad)
-- change response code to client to 200 on reproxy-file from backend
-- 'nodes' command now takes as an optional argument a specific ip:port to
dump the node stats for
-- AIO abstraction layer (Perlbal::AIO) which can currently do either
Linux::AIO or "none" (doing everything sync). also in future File::FDpasser
and other OS-specific modes [brad]
-- add buffer_backend_connect to do in memory buffering of data before we
request a backend; assists slow clients without tying up a mod_perl
-- fix spinning issue when webnodes unavailable; should now not consume 100%
CPU in those cases
-- revamp verbose functionality; by default it's still of, but if you specify
VERBOSE ON in the config file, it turns it on for management connections
by default. management connections, when specifying VERBOSE ON/OFF, will
now set the flag only for that connection.
-- new command for config file; VERBOSE ON/OFF; can be used to enable or
disable confirmation of all commands such as SET, SERVER, CREATE, etc.
by default, it's off for config files, but on for management connections.
-- add generation count to services that increments every time a pool is
switched. this data is now stored on backends when they're spawned as
well, and when we allocate a backend we verify the generation so old ones
are thrown away.
-- allow setting of nodefile on pools to 'none' or 'null' or 'undef' or just
an empty set of quotes ("", '') in order to stop using node files
-- automatically set use count to 0 on new nodes coming in from nodefile
-- made auto-vivification of pulls throw warnings, and made Perlbal die if it
tries to vivify a pool and the user has previously manually declared a pool
-- updated pool commands to be more flexible (POOL pool ADD node, etc)
-- add pools; a way of having different sets of nodes and instantly switching
between them, so traffic stops going to old nodes; see the example config
file for usage
-- work partially without Linux::AIO (does sync stat of node file in reverse
proxy mode, and webserver mode doesn't work) --brad
1.2 (2005-03-07)
-- add new stats command 'nodes' that shows information on each node that we've
been connecting to -- last connect time, last attempt time, a breakdown of
the last 500 status codes returned, etc
-- add ability to use new Danga::Socket profiling; 'profile on', 'profile data'
to see the info so far, and 'profile off' to disable it
-- graceful shutdown now flags sockets that are busy to die so they die when
they're done with their current connection
-- sockets in persist_wait now get closed immediately during a graceful shutdown
-- fix handling of OPTIONS responses; used to do its own state clearing but
it now uses the next_request method as it should
-- fix bug with determination of keep-alive in http 1.1 case specifying
a connection: close header
-- added 'uptime' management command to track how long Perlbal has been up
-- new config commands: HEADER INSERT <svc> <header>: <value> and HEADER
REMOVE <svc> <header> which will insert and remove headers from user
requests before they're sent to backend proxy nodes.
-- add dependency to Net::Netmask; now you can specify trusted_upstream_proxies
on a service (SET service.trusted_upstream_proxies = 10.0.0.0/8, etc)
which will allow requests from that range to set X-Forwarded-For, X-Host,
and X-Forwarded-Host headers.
-- fixed a bug that caused connections to hang when the backend responded
before the user was done sending data
-- reset some variables that weren't being reset: read_buf, read_ahead, read_size
-- "proc" management command shows user and system CPU usage for Perlbal
this run, as well as a delta since the last time you ran "proc"
-- added Perlbal::XS interface for modules to use; also 'xs' management
command to see the status of XS modules
-- bug in PalImg caused crash on files with no length (or when another
error occurs that causes no data to be sent to new_gif_palette function)
-- ReproxyManager would sometimes let closed backends back into the pool
and hand them off to clients, fixed to check for that
-- new policy: you don't muck around with the internals of other classes.
notably, clients don't change the internals of a backend and backends
don't change the internals of a client. this was causing all sorts of
problems because nobody was cleaning up properly. (especially with regard
to "who is my backend's client" type questions.)
-- fixed up code that did its own keep-alive checks to use the HTTPHeaders
functions so that in the future every part of the code stays up to date
-- Perlbal::Socket now has the option to keep track of all objects that
are created. new command to management interface 'leaks' will show
all objects currently in memory. turn this functionality on by enabling
the TRACK_OBJECTS constant in Perlbal::Socket.
-- split keep-alive logic into request and response methods and cleared
up how that works
-- rewrote reproxy URI support. new class Perlbal::ReproxyManager does all
of the work relating to reproxies. it's basically a service class but
stripped down and dealing with single endpoints instead of pools. much
much much more robust under heavy load. (Junior, Brad)
-- now that we support persistent connections, the 'queues' command didn't
have an accurate time; added ClientProxy member last_request_time so
we can accurately tell how long requests have been waiting for
-- Danga::Socket got an overhaul; close and steal_socket now share a lot
of code by calling _cleanup. some more paranoia on making sure the
object isn't already closed when we try to do things.
-- lots more paranoia in close events and event_err handling for backends
-- added tracking mode for helping look for leaked objects; records a
backtrace of every object created. "server track_obj = 0/1" to enable
or disable it, and then "tracking" in a management interface to see.
-- made Perlbal::objctor/objdtor take an object as their first parameter.
much faster than using caller().
-- fix Highpri plugin to not check hosts for high priority values when
the host isn't defined
-- made Palimg plugin far more paranoid about errors, and also uses new
ClientHTTPBase scratch area for keeping track of data instead of using
headers (which are generally slower)
-- fixed bug in HTTPHeaders that set_version would inadvertently
run into when used on a header created through new_response
-- ClientProxy class now supports persistence; set persist_client on
the proxy service in order to enable it.
-- Palimg plugin now supports fallback to web server mode if the
requested URI doesn't fit our desired pattern
-- did some cleanup; made a bunch of HTTPHeaders accesses use the
accessor methods instead of referencing into the object's private
store of data
-- fixed a crash caused by calling getsockname/getpeername on sockets
that have been undefined after having been stolen during an internal
redirect to another webserver
-- fixed _simple_response to not return a body if we're serving
to a HEAD request
-- bug fix: don't send Not-Modified responses to requests for dynamic
directory listings. it was messing up persistent connections
since the directory serving code didn't get passed down whether we
were sending a body or not. and not modifies on directories are hard:
modify time isn't altogether useful. (file sizes could change)
this still does not-modifieds on indirect index.html directory
requests, because _serve_request ends up eventually calling
_serve_request on a different URI. (brad)
-- added BSD::Resource as dependency to Makefile.PL (brad)
-- fixed 304 Not Modified responses to not send Content-Length
and Content-Type headers. (jr)
1.01 (2004-10-22)
-- when internally redirecting a URL, perlbal advertises
that it supports persisent HTTP connections now,
and caches those sockets for 5 seconds. (not configurable)
useful under load, otherwise you waste all local ports
on a machine
-- ditch dependence on IO::SendFile. do it ourselves (1 line)
with perl's syscall function
-- add doc/* and conf/* to MANIFEST file
1.00
-- initial packaged release