icecast-server/NEWS

Feature differences from SVN trunk

. allow for wildcards (*[] expansion) in mount-name and ban/allow files
. can limit mountpoint by outgoing bandwidth as well as a max listeners count
. can drop new listeners if server-wide bitrate is above a limit
. server xml reload, and reopen logging available via admin url
. When max-listeners reached, a HTTP 302 code can be sent to redirect
  clients to alternative slave hosts. 
. authenticated relays, those that match the relay user/pass, bypass the 
  max-listener/bandwidth check. slaves can use a different auth to listeners
. mount can filter out theora content, useful for defining a local relay
  of a theora+vorbis stream to have a vorbis only stream from the same source.
. stream-auth/handlers options for url authenticator.

any extra tags are show in the conf/icecast.xml.dist file


2.3-kh34
. Added Kate/Skeleton codec handling within Ogg streams. patch by ogg.k.ogg.k
. small changes for stream directory handling, mostly for error cases. 
. added /admin/reset?mount=/mountpoint&setting=x to reset stats for that mountpoint.
  without setting= all resetable stats are reset. x can specify peak,read or send
  or a combination of them (comma deliminated)
. /admin/streamlist.txt uses the same routine as /admin/streams so does not have 
  a limit on how much is sent back.
. updated win32 code, windows service should be ok again. service name now
  includes version to help multiple installs but windows may require a reboot
  between removing a service and installing that same service again.
. fix possible crash on reload of xml with bad tags
. small update of web pages
. added per-mount stat for total mbytes sent

2.3-kh33
. master/slave update.
  slave mode only issues a streamlist.txt request if the /admin/streams request
  fails.  /admin/streams also acts as an mountpoint for the slave relays by
  passing a mount= arg and auth.
  You can now define a <mount> for /admin/streams to define how slave
  authentication is done eg url (listener_add) or htpasswd.
  Once authenticated, the slave can bypass any limits like max listeners etc.
  The slave also allows for defining a <master> tag block instead of <master-*>
  tags allowed are <username> <password> <server> <port> <redirect> <bind>
  auth url can take an "icecast-slave: 1" header, which makes client act as a
  slave and bypass mount limits.
. build fixups for OpenBSD and cases where IPV6_V6ONLY is missing
. move 'clients' limit check to after admin request check, means admin commands
  can work even if the limit is reached. removes a lock taken as well.
. drop connections to known slave relays if we find that the destination source
  is a fallback to file, as this would cause high bandwidth usage.
. stats fix for inactive on-demand relay stats without a mount definition.
. added some minor consistency checks.

2.3-kh32
. crash fix for a failing on-demand relay.
. incorrect logfile settings for timestamp setting, for playlist and access.log
. update for win32 build and initialization.

2.3-kh31
. hard to trigger but possible race condition on source startup.
. long standing bug identified with many descriptors (eg > 1024 listeners)
. allow YP thread to skip a non-responsive server.

2.3-kh30
. crash fix if no user/pass supplied when stream_auth in use.
. the admin=1 was not passed in POST for stream_auth on metadata updates

2.3-kh29
. some small code re-organisation in kh28 caused auth htpasswd to fail new
listeners
. work around FBSD issue with listening on IPv4/IPv6 sockets

2.3-kh28
. race fix in yp thread startup.
. manageauth userlist page was blank due to a NULL check, fixed.
. add rejected_mount auth option to redirect unathenticated listeners to an
  alternative mountpoint. eg subscription stream redirected to low bitrate
. Allow for url auth to handle 'Mountpoint: ' header for redirecting listeners
  if they are to be rejected to an alternative mountpoint on the same server.
  This is as opposed to the Location: header which gets a player to redirect,
  maybe to an alternative server.

2.3-kh27
. fix potential fserve thread race
. merge listener inline shoutcast metadata into previous block write. It is
  very common and saves writing a very short packet per listener at metadata.
. reduce log memory usage when caching lines for web display
. reduce memory usage slightly on 64bit systems, in refbuf/avl storage
. be more 32/64bit clean
. fix possible corruption if reducing qblock size over reload
. get stats thread to update global outgoing_kbitrate stat, no point flooding
  the stats queue.

2.3-kh26
. internal code cleanups
. fixed accidental bug which caused problems for non-ogg streams without a
  mount defined
. if listener_remove used then remove queue reference before auth performed as
  queue will expand. race case between auth and source thread on refcounting.
. Add error reporting with above case, makes identification easier.

2.3-kh25
. kh24 had a lockup bug on reload if auth url used.
. Don't pass listeners to the authentication queue if no auth handler defined
. auth listener_remove was not triggering if listener_add was not specified.
. make sure avl tree for mime types is cleared.
. remove pthread_exit in fserve, older glibc had a memory leak
. fix memory leak/corruption in YP handler, also make YP thread startup instead
  of polling frequently.
. redo server connection lookup. Now we refcount the server connection details
  from the xml, make the client refer to it. reduces locking as well 
. always call the xml reload from the slave thread.
. fix memory leak over reload, when using multiple master within relay
. incorrect output appended to streamlist output for relays.
. race between stream shutdown and listener_remove could cause memory corruption
  with queue buffers. Make source clear less strict.
. cleanup any fserve clients after other threads are down, removes lock race
. reduce burst limiter for listeners on sources.
. if available, log file descriptor limit allowed by kernel.

2.3-kh24
. make auth threads start/stop dynamically. reduces latency for auth'd listeners.
  The handlers setting is still the maximum number of threads for that auth
. ip allow/deny list wasn't working right due to fnmatch return value.
. fix memory leak which occured on reload events.
. fix possible corruption when connection thread restarts from reload
. add <deny-agents> tag in <paths>. Drops listeners with useragents matching the
  pattern in the specified file.
. internal code cleanups

2.3-kh23
. file serve thread is dynamically started/stopped, latency seems much better when
  compared to a sleep/polling loop
. sometimes the empty virtual mountpoint stats were being provided instead of the
  real source stats. This should finish off some of the work done earlier on stats
. Don't be case sensitive on range header in fserve parsing.
. a typo in the POST for listener_remove got by, ip and duration were not correct.
. small code cleanups from merges with trunk
. minor fix for global listeners count
. listener remove wasn't being triggered for listeners on sources.

2.3-kh22
. Implement a global outgoing_kbitrate stat, sum of all listeners on all sources.
. Small updates on the average bitrate handling
. implement a server-wide bandwidth limiter check for new listeners. If <max-bandwidth>
  in <limits> is defined then new listeners can be rejected/redirected.
. drop non-gcc compiler flags from configure.in, drop _XOPEN_SOURCE as well
. send Cache control header, just in case proxies are involved
. another flash (on IE as well) hack posted on forum.

2.3-kh21
. IP ban/allow files can now use wildcard expansion to matching addresses
. allow mount= param on webroot xsl pages
. check for missing type in mount authentcation
. fix corruption if listen socket failed.
. if using a change owner setup, do the listener socket setup early (for root privs)
  and prevent reload from altering the sockets.
. lag calculation incorrect on shoutcast style metadata inserts, fixed
. fix potential lock held in admin for certain error cases

2.3-kh20
. send http 302 response if auth url returns a location: header 
. allow for any number of listen-sockets
. combine listener/connection thread into one thread
. use short timeout period in connection thread if requests are pending
. make primary thread be the slave thread which starts the connection thread, this
  allows for the connection thread to be restarted with changes to listening sockets
. cleanup work from merging to trunk

2.3-kh19
. fix segv possibility in mp3 metadata
. in xml stats, make listeners id to be an attribute of <listener>
. cleanups from merge to trunk work.
. added per listener lag count, which shows in stats.
. added ip= in POST for listener_remove
. Use spin locks (if available) for a few short held locks, falls back to mutexes.
. missed some socket setup with the ipv4/ipv6 code. You don't have to wait when
  restarting servers

2.3-kh18
. fix a segv case that occurs in a certain fallback mount case, this was introduced
  recently when max listeners/bandwidth was worked on.
. fix possible crash case for a missing mime types file
. fix segv case added in kh16, on demand relays without a mount.
. win32 build should now handle wildcard mountpoints.

2.3-kh17
. fix segv issue in auth, has been triggered with htpasswd
. if inactive mounts with active fallbacks are removed from the xml, they will
  now be removed from stats.
. small build fix for ipv6 update in kh16.
. memory leak fix in relay handling and mime types, 2 other minor ones elsewhere
. do http auth extraction for incoming clients earlier, username wasn't logging in
  certain cases.
. mangeauth was not hooked into correctly from the last admin update.
. change streamlist trigger to be based on time instead of a counter. With the
  shorter delay in slave, this was causing the streamlist to occur too often.
. http 302 wasn't sent 100% of the time. The redirection list is now only dropped
  over XML reload.

2.3-kh16
. Implement max-bandwidth mount setting, this can be used to limit listener numbers
  instead of/as well as the max-listeners option.
. Add patch from Gilou for source address bind for relays. Adds <bind> option to
  <relay> and <master-bind> option for slave setups.
. Update to IPv6 handling in net/ code, no need to seperately specify an IPv6
  socket for listening.
. Actually make the listener details appear on the stats pages if the mount is
  specified (does not apply to listclients). Most won't notice this unless they
  parse those xml stats for listener information.
. Handle xspf generation like m3u but uses an xsl page for layout
. Small changes in a few places, avg bitrate calculations, lower triggers for
  listener send with fallback files.
. Internal duplication removed, source structures contained limits which were also
  held within mount structures.

2.3-kh15
. fix for possible race (from kh14) leading to lockup when many streams are
  starting up at the same time.
. don't provided listener details to all streams via admin access, only when
  a mountpoint is provided. Should help in cases where there's large number
  of listeners on several streams

2.3-kh14
. add <file-seekable> boolean to <mount>, default is true
. return 403 (not 401) response if the server in auth url is not contactable
  for new listeners
. increase scope for source locks, certain initialisations can have race
  conditions which leads to unpredictable results.
. minor fix for listclient.xsl, the case of listener stat names were changed.
. minor cleanup of stats updating

2.3-kh13
. Allow for wildcard matching (eg /*.mp3) in mount definitions on systems that
  support it.
. for streamlist (slave requests), get the list of non-hidden streams from the
  stats instead of the source or mount lists. This allows for streams without
  a <mount> to be exported and also lists inactive mountpoints with active
  fallbacks.
. Allow for specifying an id= parameter with listclients so that specific
  listener details can be queried.
. ship a config.h used for a VC6 build in win32

2.3-kh12
. relays handle 302 redirection from master server.
. fix for possible crash with incoming shoutcast style source clients.
. changes to web/admin pages. while /status.xsl still exists, better to refer
  to /index.html for web and /admin.html for admin.
. Filled in a few more global static stats, updated on reload xml

2.3-kh11
. added extra header for shoutcast source clients. some may need it.
. missed <server> tag in <relay> <master> from previous release
. changes to admin interface, aliases now work, reduce code size.
. relay page shows all relay masters, not just the first one.

2.3-kh10
. race fix for relays, hard to trigger but can cause a crash
. add <mimetypes> xml tag for locating file with mime types defined
. added warning messages for xml tags with no content, but don't prevent
  icecast from starting.

2.3-kh9
. try a lower content length value for flash clients, some combinations of
  browsers still have issues.
. add <admin_metadata_only> (boolean) to <mount> for ignoring incoming vorbis
  comments. Only takes the artist= and title= settings from /admin eg
  /admin/metadata?artist=abc&title=xyz&mount=%2Flive.ogg
. allow multiple <master> tags in <relay>, allows for switching between multiple
  masters. Requires a fallback to keep listeners connected over switch though.
. add <retry-delay> setting for <relay>, default is <master-update-interval>
. Add <allow-ip> setting. similar to banfile but only allow connections from
  certain IPs
. fix on win32 previous build, truncation bug reappeared on large web requests.
. minor build update for acx_pthread
. assume default pass-through (mp3/aac etc) stream charset ISO8859-1 not utf8
. added macro which enables the writing of large files (log/dump).

2.3-kh8a
. build had access log logging without IPs

2.3-kh8
. add "handlers" option for url auth, defines multiple auth threads for
  processing incoming clients. Default is 1 per <authenication type="url">.
  Internally the client data doesn't hold onto the auth_t now.
. banfile option, drops connections whose IP is listed in the banfile
. Added check for a still connected listener before auth attempted, no point
  in doing slow url auth if listener has already disconnected.
. fix buildm3u for auth without a source stream.
. change content-length for flash to 319324133 to see if that works better
  for IE7
. Added <accesslog_ip> boolean for runtime config of logging IPs, default on
. expand on relay failures messages to include the server and mountpoint
. fix possible race condition with shoutcast style connections.
. decrease frequency of connection thread wakeup.
. make connection thread sleep if accept fails, prevents busy loop
. Don't set CURLOPT_PASSWDFUNCTION if libcurl does not define it
. update debian directory (need feedback on that)

2.3-kh7
. fix slow memory leak on metadata updates if <charset> was defined
. fix minor leak on xml settings.
. fix segv on 0-value duration in source, minimum is 2 secs (default 60)
. fix small memory leak on xsl page requests.
. stats update. kbytes used, and frequency of read kbytes reduced.
. change vorbis stream rebuilding to flush at 1 sec at the most.
. minor changes to win32, buffer size issues for stats and xml cleanup
  causes a crash in libxml2
. minor log updates

2.3-kh6
. implement <limit-rate> bps in <mount>, the bitrate which triggers a timer for
  possible source termination, also causes a slow down in reading. default no
  limit applied.
. implement <avg-bitrate-duration>, calculate average bitrate of over so many
  seconds (default 60)
. add <wait-time> to indicate how long a mountpoint is reserved for after a
  source client terminates.
. some internal cleanups
. stats value cleanups.
. possible segv on override case if source is slow to start streaming.
. hardcoded AAC content type missing
. initial xml setting bug, caused crash with later glibc.
. streamlist.txt should list inactive mounts if their hidden fallback is active.
. move listener_connection increases even later so that listeners on failed
  on-demand relays don't get counted.
. updates to charset handler, for failure cases
. kh5a included a fix for a segv that crept in.

2.3-kh5
. add media-type to xsl pages, IE has trouble with xhtml
. add <accesslog-exclude-ext> for defining extensions that do not get reported
  via the web interface (they are still written in the log file). Whether
  alternative tags should be used is still undertermined.
. fix for empty log display via xsl, produced odd chars.
. auth url avoids calling backend code when settings are not defined.
. content type fixes for xslt files
. allow <shoutcast-mount> to appear in <listen-socket>, this defines a per-port
  based mountpoint allowing multiple shoutcast source clients to connect. This
  also defines a port+1 listen-socket automatically.
. xml parsing changed, 'yes' and 'true' can be taken for boolean settings. some
  removal of deprecated tags but may of missed a tag so report if any are.
. added <filter-theora> boolean for <mount>, filters theora out of passed stream
  so listener only gets what is left.
. add per-mount listener_connections stat
. add <allow-url-ogg-metadata> bool per-mount, enable to allow url based metadata
  updates. Default disabled.
. add charset option to mount options. It allows for conversion to UTF8
  for the stats/web pages and therefore YP listings and playlist log.
. minor changes to web pages.
. allow for 403 response from auth url to pass back to listener, in the case of
  a 200 response from auth server, allow 403 at start of message to indicate a
  403 response to listener.

2.3-kh4
. fserve thread now looks for a chain of refbufs as well.
. plug leaks from coverity code analysis. mainly minor but a possible fd leak.
. log handles caching of N lines.
. show last N lines of log contents via admin pages
. change webpages (for the better!), add logs display and reload config.
. use 64bit handling when using stats _add calls
. send 403 not 404 for max listeners reached.
. add server-wide total sent in streams count. 
. fix possible corruption case with new cients.
. on listener move, search from burst point if most recent refbuf is not a sync
  point, currently only theora streams.

2.3-kh3
. add source auth via authenticator, affects certain admin access as well.
  Only url auth using it currently
. relays now have start timestamps, prevents a possible constant rescanning
  effect with multiple relay failure case
. fix memory leak in ogg flac case.
. update YP, get bitrate from stats (incoming_bitrate), if not provided. Issue
  yp add after 60 secs, gives time for bitrates to settle.
. cleanups in auth setup, push more setup code into the core auth handler.
. when moving listeners, if most recent refbuf is not a sync point then use
  burst point. Fallback theora streams can be affected by this.
. drop master-redirect-port, use <port>.
. set <master-redirect> (in slave) non-zero to send IP/port details in
  streamlist request, so that new listener redirection from master is possible.
. set <max-redirect-slaves> (in master) to specify the number of slave servers
  that can request listener redirection, default 0.
. prevent avg/total byte stats for fallback to file sources.
. allow for server id to be defined in xml.
. add connected stat to source, duration in seconds.
. increase average stats for bitrate calculation to 30 seconds
. increase sleep duration in connection thread to 100ms
. make source clients report read bytes in access.log
. bypass clients limit check for ssl connections, let admin do stuff
. various type cleanups, gcc4 show various signed/unsigned issues.
. sync up with trunk, win32, os.h/compat.h, minor type definitions

2.3-kh2
. merges from post 2.3 release/feedback
  - stats speedup, from order O(n^2) to O(1)
  - log cycle update. can state log size and whether renaming with date extension
    is to be done
  - fixup grnaulepos handling in vorbis rebuild. minor audio playback glitch
  - sync intro file change over HUP handling.
  - send 403 responses instead of 404 in certain cases.
. added realm and drop_existing_listener settings to generic auth.
. auth url didn't handle authetication of the invoked scripts. Now the order
  we handle auth is
  - url as   http://user:pass@.../
  - take auth from options username and password
  - if listener_add/remove then use username/password from listener
. fix double free bug in auth

2.3-kh1
. fix double buffer release when dropping auth'd listeners on source exit
. don't put client on auth engine if removeurl is not set
. update xsl pages.
. fixup nsv source clients (shoutcast style), nsvcap uses \r\r\n
. added logsize tag, for automatic move/reopen of logs
. fix race on new listener connection
. missed lock when relay allocates a client
. nul char out by 1 position in initial connection buffer (request)
. slow down accept thread if client limit reached
. cleaned up access logging, username is logged if present
. add icy:// hack for quicktime
. if host header is missing a port then assume it's broken (eg winamp) so
  treat as if it wasn't there
. revert parser handling as it was having issues with fallbackl to file

2.2-kh17
. fix double free bug with failed startup of relay
. added per-mount max-listener-duration setting.
. updated auth_url, POST update and option names
. log xml/xsl errors via error log
. fix hopefully last oddcast/connection thread related bug
. added artwork=url to metadata update 
. updated docs (some sync-up with trunk)
. max client limiter updated
. sync with trunk
  - pidfile created before changeowner
  - close stdin/out/err if using -b 
  - win32 free bug, unix doesn't seem affected
  - htpasswd segv bug when auth file is missing
  - auth.xsl fixup
  - mp3 metadata cleanup

2.2-kh16
. fixed segv when using oddcast DSP
. master/slave streamlist is now isolated in its own thread, so should not
  affect the slave thread which among other things does timer updates. libcurl
  is used so that is required but you can do ssl queries if required
. new listeners will be rejected if auth queue is backed up
. Changes to web pages by Dave St John
. isolated SSL/non-SSL switch to connection_t
. An older xslt lib can be used (earliest version has not been determined yet)
. changed 'header' option to 'auth_header' option in auth_url
. various typos, cleanups for merges with trunk

2.2-kh15
. fixed 2 segv bugs, one on relay shutdown (on-demand) and another on client
  drop in connection thread.
. send the fixed string responses via fserve, unlikely to show as a problem
  for normal connections but required for SSL sockets.
. Added SSL handling on certain ports define with <ssl>, initial work by
  oddsock, extended due to connection handler changes.
. merge small changes from trunk to keep things in sync
. increased the max number of listen sockets to 50

2.2-kh14
. various auth updates. The auth thread main code handling updated.
  - auth url, various checks added for missing settings, listener timelimit
  added. Added port to POST and useragent (icecast version). 
  - auth_htpasswd, uses avl tree to store users, faster compared to disk 
  and mtime is used to make sure it's in sync.
. win32 updates, probably more cleanups needed but file references are correct
  again.
. some small memory leaks plugged and typos fixed.
. added the favicon.ico file from the website

2.2-kh13
. updates the m4 scripts, pthread for solaris/gcc and check for --with-X
. the ogg reading code could busy loop in certain cases, fixed
. limit ogg codecs per stream to 10 so that it has some upper bound and not a
  potential excessive memory taker.
. always on relays missed out the listener count initially, fixed
. compiler cleanps.
. YP sends server client limit if max_listeners is set, however client_limit
  is not in the stats tree, should it be?
. oddcast sends stream data with http headers, which caused the non-blocking
  connection thread to drop the inital bit of the stream, ie ogg header.
. fix xslt handling properly, buffer truncation was missing and empty string
  was leaving the socket open.
. fixup handling for shoutcast source clients that send a \n for EOL
. only log to access log if a response code is set

2.2-kh12
. rework connection handler to work on non-blocking sockets. the listener thread
  handles the http reading, after which it passes it over to the connection
  thread for parsing.
. any xsl file can be placed in admin now and can work off the stats data
. dump listener details to xml for admin requests that get the stats tree
. make sure that fallback file streams are hidden
. fix fd leak in error case for file ranges and plaintext list_mounts function
  like that used for querying a master server
. use correct offset from burst point for new clients
. batch up small reads for passthrough streams into slightly larger blocks, so
  that TCP protocol overhead is kept to a minimum.
. because of the batching, the max send count per client per iteration is less
. fixup streamlist.txt to be sent via fserve thread
. fixup automatic m3u output to be via fserve thread.
. XML read from HUP is not sent via the connection handler now, instead the
  slave thread processes it
. doc update for url listener auth

2.2-kh11
. xsl/xml pages from adminroot and webroot are now delivered via the file
  serve thread.
. Allow TouchFreq changes for actions other than add
. update main auth handler, don't require user:pass to be passed, leave it to
  the specific auth to decide.
. update auth_url, pass original request url through to auth in mount=
. plug some small memory leaks in auth engine
. remove some dead code

2.2-kh10
. play better with Real/Helix, StreamTitle needs to be sent at least initially.
. A zero'ing of the listener count occured affecting on-demand relays. A left
  over from the pending queue drop
. various small checks added
. trunk sync-up

2.2-kh9
. drop the pending list for each source, adds clients to active list directly
. intro and fallback to file handling fixed again, recent changes caused
  certain aspects to not work.
. helix/real player wants StreamTitle metadata at the start or else it messes
  up the mp3 playback.
. small stats/xsl updates

2.2-kh8
. fix moving listeners bug recently introduced, affects fallback mounts
. make YP engine, url escape alls stats before sending to YP server.
. make <no-yp> setting work again, but it is being deprecated because of the
  newer <public> setting
. add slow_listeners stat. A count of listeners that fall too far behind
. small doc updates

2.2-kh7
. fix busy poll loop, introduced in kh6, fast clients are now placed at the
  end of the listeners lists and the starting position is recorded. 
. use a loop when checking the burst point, that way reducing burst size over
  HUP works on active streams
. fix 64bit usage in access.log on win32
. Add ability for relays to be switched on or off but still reserve the
  mountpoint.
  - Added <enable> tag to <relay>, takes a 1 (default) or 0
  - change with url /admin/managerelay?relay=/localmount&enable=1
  - added admin page for enabling/disabling relays
. on-[dis]connect scripts are looked up in the mount list instead of copied
  to the source
. type cleanups

2.2-kh6
. sync up with trunk merges
. various internal updates
  - better handling of per-mount stream settings
  - better updating of stats
  - removed unnecessary code
. relay username is 'relay' by default
. shoutcast clients can use per-mount password
. split client write into client write and advance buffer
. source IP stat added for relays/source clients

2.2-kh5
. Added total read and sent stats for each mount.
. Added start time for server and each mount
. Added average bandwidth stats for each mount, incoming and outgoing
. fixup problem with stats client exiting. wasn't unregistering
. outgoing mp3 metadata default to incoming if present
. update to explict stream settings in mount
. prevent cyclic fallback mounts ie A->B B-A where B is down
. reduce time syscall call usage
. lookup mount list password for shoutcast source clients
. 404 unknown requests
. removed dead/duplicated code
. check for non-regular file in fserve

2.2-kh4
. Added FLAC/MIDI to Ogg Handler
. sources count was left increased if client limit was reached
. A failed on-demand relay left new-listener count increased
. streamlist.txt is now built from mount list, not source list as source
  clients could disappear but may have a mount with a fallback specified.
. update auth_url with some pointer checks, added server= to the post
  information sent in 'add'
. missed <subtype> in previous update
. a bad request from client caused a clients count leak

2.2-kh3
. fix nasty buffer reference bug which could cause excessive queue usage
  when using chained theora streams
. fix to server full message, client count handling is now done by the 
  client_create/destroy. client_t created in main handler and passed down
. YP update. The add retrieves the stats not the create, allowing for a
  delay in setting the stats. fixes 'blank server name' error. on-demand
  relays can now add to YP before connection.
. slave thread now checks if shutdown is required after the sleep
. dropped parser/con from source_t
. a few NULL pointer fixes from auth change and some small mem leaks fixed
. don't trigger short delay in fallback file thread

2.2-kh2
. optional url requests for source startup/shutdown.
. 'header' option for listener url auth.  If this header is returned 
  for the auth request then the listener is authenticated.
. per-mount override for <stream-name> <stream-description> <stream-url>
  <genre> and <bitrate>
. fixes to previous auth update

2.2-kh1
. Auth update. could have affected a few cases, report any odd issues
  with connection
  - auth_t part of mount_proxy now
  - xsl/m3u/fserve handling occurs after auth
  - single auth thread used (can be part of a pool)
  - listeners are auth'd on the mountpoint they requested, no matter if 
    a fallback was triggered.
. fix bug introduced in kh6 when url updates are used with vorbis only streams
. source stats for on-demand relays could disappear when they should not
. after intro file has been sent, the listener is placed on stream queue to
  complete the stated burst size
. mount "all" can be used to state mount settings for all non-admin mountpoints
. ignore a 0 metadata interval in mp3 streams, some servers have sent that
. auth_htpasswd, the tmp file failed to work if an absolute path was specified
. auth_url, 'client=' is sent instead of 'id='
. various log msg cleanups

2.1-kh6
. fix reported bugs in auth url.
. at source shutdown make each client release refbuf before going to auth
. added example php script for auth url. thanks to Stephen Nixon
. don't do work on logical stream changes that will be dropped immediately
  afterwards
. make sure m3u does not race against HUP change
. resync with trunk (2.2 fixes)
  . type fixup when referring to time_t
  . do not list failed relays in streamlist.txt
  . xsl caching wasn't working right if many xsl pages were being referenced 
  . playlist logging was being truncated by 1 for ogg

2.1-kh5
. fix YP memory corruption bug introduced in kh4
. resync with trunk
  . updated YP parameters to follow spec.
  . stats on the theora stream
  . doc and xsl updates

2.1-kh4
. cleanup ogg codec build
. handle ogg header pages better
. ogg vorbis streams are rebuilt, but mutli ogg codec streams are
  not, automatically determined now (drop the ogg-rebuild option)
. more error checking in theora handling
. unused code removal
. merge from trunk
  - add cluster-password
  - admin page for updating title via url


2.1-kh3
. merge of the 2 ogg modules
  - drop --enable-vorbis-upodates, use <ogg-rebuild> in the <mount> instead
  - split codec specific code into separate files
. authenticated relays (non-slave host) should work again
. update autoconf macros
. move code around to help with sync-up, code move to auth as well
. yp touch wasn't updating as quick as it should
. resync with trunk
  - make format_mp3 the default handler, passing through the mime type, that
    way unknown streams like AAC, NSV just pass through
  - fixup for naming and authenticating of shoutcast mountpoint
  - docs and win32 build setup

2.1-kh2
. send max_listeners to YP, server limit if mount is unlimited
. add server client_limit and source_limit to stats
. filter duplicate metadata in inline mp3 streams 
. minor fix the xslt
. minor leak on failed range header fserve client
. added AAC and AAC+ content-types for mp3 handler
. resync with trunk
    logging metadata, needs testing
    added <shoutcast-mount> for shoucast DSP compatible clients

2.1-kh1
. Added <intro> tag to <mount> to allow the contents of a nominated file
  (in the same format as the stream) to be sent to a listener before the actual
  stream is.  On-demand relays also work with this.
. fallback-mount can now be used to state a file not just another streaming
  mountpoint (needs to be same format as the stream), fallback-override works
  with this.
. the stats.xsl page lists all stats, status.xsl does not show hidden ones.
. internal cleanups when processing clients. Drop the use of per-client predata
  and use usual buffers instead. more even client write distribution.
. resync with work from 2.1 release and trunk
    shoutcast style source client, needs verifying
    NSV streaming.
    Win32 build cleanups

kh58
. fix stability bug on vorbis rewrite module (--enable-vorbis-updates)
. fixes to URL metadata handling. For vorbis streams they didn't update
  the stats/YP, for MP3 they were ignored if the source stream had no metadata
. fixed small leak in slave host handling
. resync with various trunk changes (aliasing cleanups, win32 timezone offset,
  log messages, docs, xsl files etc)
. for auth_url ignore case for authentication header
. updates to slave handling of stats when relays start/stop, mainly relating
  to on-demand relays
. expand on the trigger for determining if a relay has changed, it was only
  on local mountpoint before.
. if an on-demand relay shuts down, don't remove the YP info

kh57
. don't list hidden mounts on streamlist.txt
. fixup format_vorbis from singleq merge, memory leaks and uninitialised
  pointers.
. for YP, grab the ice-bitrate from stats at the time of adding to server,
  this is useful as YP spec has bitrate as mandatory but bitrate may only
  be determined from stream.
. check per-mount auth settings for per-mount admin requests, useful on
  url metadata updates
. resync web and admin docs with recent xhtml work in trunk

kh56
. provide an alternate sock_write_fmt for old style vsnprintf, this was
  causing no data (on truncation) to be sent on windows (stats.xml).
. restructure stats engine, the inc/dec calls could cause incorrect values
  due to racing with unprocessed events. The maths is done in the engine now
. due to the stats engine, various changes to stats for mountpoints have
  happened, most/all cases look ok. stats relays will need double checking
. added max_listeners stat to each listed mount.
. added icecast version global stat
. fixed bug when a on-demand relay as a fallback was being started when
  it should not of been.
. allow for clients to fallback from on-demand relays that fail to start
. The default mp3 interval is now 16000 bytes (inline with trunk) but this
  can be overridden per-mount with <mp3-metadata-interval> in bytes. Other
  format-specific settings could be possible.
. update fserve thread to check which clients are writable, CPU loading
  could become high if slow and fast clients are connected.

kh55
. let the stats relays loop around instead of blocking on conditions, that
  way we don't get out of sync if we miss a wakeup.
. some NULL checks in stats code were missing.
. updated xsl transform code, small changes to status.xsl as well
. add checks for missing / starting mountpoints
. sync up YP in trunk, this looks to be solid now.
. small include cleanups

kh54
. NULL dereference in yp from previous patch now fixed.
. When override set on an on-demand relay, then the relay now checks to see
  if there are any listeners on the fallback mount, if so then it starts up.
. removed useless per source clients stat, listeners already exists

kh53
. remove the last remaining stats at stream shutdown.
. implement hidden attribute for stats, source stats can be toggled between
  hidden/visible. This is a slight change to stats usage but not major.
. mountpoints on xsl are better handled now
. drop slave-host from xml parsing. They are used internally, created and
  removed by master relays authenticating against the relay user/pass.
. when moving clients don't report on-demand relays as source not available
. when moving clients don't show move clients on mount /a to /a entry.
. race fix for YP entries

kh52
. A lot of resync work with trunk
. add queue shrinking, reduces queues to either last listener or burst
. minor race fix, mp3 url update lock.
. allow for xsl files to show inactive mounts but with active fallbacks
. Add <hidden> attribute to <mount> to prevent xsl display
. add <burst-on-connect> flag to maintain compatability with trunk
. doc updates

kh51
. make config lock a rwlock instead of mutex, removes unneccesary stalling
  and removes possible (although not reported) deadlock cases
. very hard to trigger race in util fixed
. on-demand authenticated relay wasn't being kicked off properly
. allow the prevention of duplicate authenticated clients connecting. The
  mechanism is the same as SVN except duplication checking is a generic
  authentication check and applies to all auth mechanisms.
. make connection handler only sleep when connections are not pending
. mp3 streams with in-line metadata could of created some empty nodes, not
a stability problem, but wasteful.
. small memory leak fixes
. small internal code cleanups

kh50
. removed redundant pointer, adding new clients could cause a memory
  corruption problem
. structured relay startup differently, so that relays operate independently
  from one another. relay threads are now attached.
. resync with trunk. make m3u lookups more general, makes static files work
  with .m3u
. encode names and values from stats when building xsl pages
. add /admin/function[.xsl]?perform=xx the current handlers are
    xx = reopenlog
    xx = updatecfg
. removed old abort test

kh49
. allow for changes in mount settings to update active sources
. allow for slaves to authenticate with the master using the 
  master user/pass.
. if client authenticates as a relay then bypass the normal
  authentication and max listeners check.
. fix a string length problem with relay auth
. if slave fails to auth then log it and go back to waiting
. remove unused/debug code
. updated net code, timeout problem for slaves

kh48
. tweaks to per client write limits
. allow for on-demand to be set on all relays by default
. resync with trunk for refbuf singleq merge
. updated win32 build
. Add Ogg writ handler
. mp3 fixes, url metadata related
. resync yp timeout code to the same as in trunk
. allow for redirecting new clients to other hosts when full

kh47
. per mount burst size was not being referred to properly
. added sync markers to queue for client starts, the buffer with a sync mark
  from the burst point is where a client starts from.
. theora marks a sync marker on a page which has the start of a keyframe.
. vorbis and speex mark sync on all buffers unless theora is used. mp3 sync
  marks on every buffer.
. some code re-org for queue management, allows old refbuf removal even
  on socket read timeout
. place clients that can take more pending data at the beginning of the client
  queue. This allows for reducing client scanning when there's a short timeout

kh46
. New listeners actually drop to fallback mount, silly inverse bug
. typo in mp3 metadata handling, affected error case, rare
. make short delay timeout work when reading from source, minor handling
  case from previous update.
. make the ogg vorbis module use 1000 not 1024 as a factor for stats.
. if a YP server is up but not responding with an error message then show
  a default one.
. fixed a fallback problem and improved the log messages for when fallback
  is triggered.

kh45
. fix minor YP cleanup case when YP server fails and source disconnects
. cleanup from previous patch exposed a potential source reading bug, which
  had shown up because sources could disconnect for no reason.

kh44
. fix segv case for non-auth streams, unchecked in last release.
. only send ICY 200 OK if realplayer else send HTTP/1.0 200 OK
. allow for setting username/password for auth URLs
. still apply timeout to recoverable source read

kh43
. add <username> <password> tags for <relay>, default none, both need to
  be provided for auth to be attempted.
. add url based auth module. example in conf, you can state add and
  remove urls to run for each client, each add is passed id, user, pass, ip,
  user agent. The remove is passed id, user, pass, duration
. make sure the global client count is in sync when auth is used

kh42
. drop the use of thread conditional variables in the connection threads,
  they we not working as they should
. minor cleanups, log messages etc
. re-work auth subsystem to allow for slow auth mechanisms
. added command auth, do that listener auth can be done externally. The
  external command should take a mount, user and pass on separate lines and
  return a status code of 0 (authenticated) or non-zero (reject)

kh41
. fixed 401 reporting on missing urls, should be 404. Handle a very rare
  long lock held case as well

kh40
. make sure public is 0 in the stats tree
. move parse_audio_info back to source.c and make it thread safe
. add debug for YP ok case, debug is supposed to be rarely used after all
. up the per-listener max write threshold
. report 401 for failed auth connections
. add audio/x-mpeg mime type

kh39
. mp3 streams without metadata were not having their metadata initialised
  properly, causing problems when clients connected with metadata capable
  clients.
. send ice-audio-info to clients, provides YP info in relays situations

kh38
. re-sync with svn codebase, update listener auth and docs
. send ICY OK instead of HTTP OK for realplayer test
. minor cleanups

kh37
. add the previous vorbis specific handler back in, it allowed for updates
  via url. enabled via configure --enable-vorbis-updates
. updated admin pages to those in the main tree
. plug some minor memory leaks in yp

kh36
. force yp_remove, log message when found, fixed a race as well
. fix mp3 segv when on-demand relays are used
. fix debug messaging in yp.c, helps to track any YP related problems
. emit icy-br instead of icy-bitrate, allow relays to be on YP listings, but
  handle icy-bitrate as well
. <no-yp> (default 0) in <mount> prevents a mount from going on YP listings
. fixes to ice-audio-info handling.
. make yp thread wait longer than it does at shutdown, allows for final
  yp_remove on closing streams

kh35
. handle YP error conditions better.
. moving clients via url allows on-demand relays to startup/shutdown
. segv bug fixed from previous release, http headers were being prepared
  on mount switchover.

kh34
. minor fixes for YP, fix missing bits from rewrite
  if any YP request fails go back to add
  do a yp touch on inline mp3 updates as well as url metadata updates 
. sync with main tree for minor patches.
. set default stream burst size to 64k (typical player prebuffer size)
. fix some missing web stats
. add <fallback-when-full> (0 default) to <mount>, put new listeners
  on next available fallback, 404 otherwise

kh33
. schedule a YP touch on admin metadata updates
. build fix relating to geturl files.

kh32
. minor compile cleanups from CVS
. make sure a failed script does exit
. report system message on initial log open failure
. update YP thread code, big change.

kh31
. fix for bug when adding clients from pending list.

kh30
. add make static for those who want it
. changed code on list processing for active and pending clients
. changed when format-specific client data gets freed up
. shuffle code around, OK response to source client only source_client_thread
. 404 sent to client on failed on-demand relay
. more re-sync work + various non-functional cleanups

kh29
. revert test harness code left from before which advertised private streams
  and cleanup unwanted messages
. more cleanups, more sync work with CVS
. source_t wasn't going after source client disconnection

kh28
. more re-sync work
. fixed a yp deadlock case for stuffed yp servers.

kh27
. fixed 2 possible deadlock cases
. fixed race wrt to alias lookup after HUP change
. reset ogg stream type to "Ogg Vorbis" even if it isn't, so that YP
  shows icons correctly.

kh26
. fixed YP related bugs, leaks + bad pointer access
. fixed rare segv case in format_mp3
. more cleanup work in source shutdown
. Changed how client http headers are sent back
. Implement on demand relay, enabled with <on-demand>1</on-demand> in <relay>

kh25
. Changed Ogg module
  - added Ogg multiplexing
  - added theora and speex streaming
  - URL updates removed from vorbis, due to multiple codec support, maybe added later.
. continue with more re-sync to CVS work
. fixed a few rare races that had shown up with the re-sync work.

kh24
. more re-sync work with CVS.
. Identified a couple more locking issues via the admin interface
. remove errno use from stream dump routines

kh23
. re-sync with CVS tree, fallback override, no-mount, initial work on
  listener authentication.
. locking updates 
. on-connect/disconnect scripts are started and not waited on.
. icy/ice headers cleanup
. initialise config correctly

kh22
. fix some rare lock races
. page samples fix on EOS flush, reset granulepos to 0 on new stream
. add /admin/streamlist.txt from beta3
. big update of the relay code, supports master relay now
. added yp-log-headers tag in <logging> to disable YP header logging, it
  can make for lots of noise in the logs

kh21
. only send a 200 OK for source connections that are from source clientts
  and not relays
. on failed source init, some setup was not cleared and the source count
  was not decremented
. Check that writes to clients have actual data available
. fix deadlock case with yp
. fix locking for url metdata updates generically
. fix use of non thread-safe function localtime in yp

kh20
. fixed slave/stats shutdown race
. re-applying avl fix for null free function
. fix for vorbis, API changes caused stalls when sending to client
. relay updating/restarting code fixed.
. changes to vorbis input to allow for url updates
. allow for stating artist and title on url

kh19
. fix a few more signed/unsigned problems, affecting mp3 mainly
. re-worked pthread configure option
. update various bits to bring in line with v2.0 beta2

kh18
. another signed/unsigned int bug fixed
. added a short delay trigger for waiting clients, improves bursting
. added --disable-log-ip for the access log
. fix segv when adding clients to inactive relays

kh17
. cleanup some api bits
. fix mp3 bug causing glitches in the audio
. added pidfile support

kh16
. made outgoing serial numbers unique, helps in fallback situations
. revert date field to where it was in access.log. That way it conforms
  to the common log format for analysers.
. changed interal api of the client write function so that handling of
  burst limits is better. Also allow the queue to be more format specific.

kh15
. Updated vorbis input to rebuild stream, forcing pages to contain around
  1 second worth of audio.

kh14
. use localtime_r when available
. compile time switch for enabling/disabling logging IP in access log
. handle source counts better.
. relays retain the source struct so source clients don't steal inactive
  relay mountpoints.

kh13
. update to latest CVS docs
. fixup source timeout, internally it's in milliseconds, and can be
  stated per mount as well as globally.

kh12
. terminate stream if inline metadata does not contain "StreamTitle"
. Added docs by oddsock, and other updates from CVS
. wait for source start/stop run scripts to finish, linuxthreads
  were leaving zombies.
. missing initialiser for relay connection, caused segv on failed
  connections
. fix 3 mp3 metadata mis-alignment bugs on stalled links

kh11
. fix a bad memory reference from kh9
. don't free finished clients too early, bad memory reference

kh10
. when reading from straight mp3 stream (no shoutcast metadata)
  updates via url were not getting to clients. fixed

kh9
. per-mount queue and burst size options
. pre-mount on-connect/on-disconnect scripts
. more re-sync with cvs updates
. force relay re-check on xml update

kh8
. timeout value had multiple applied
. more dead code removal
. make initial mp3 metadata block blank
. fix potential leak in mp3 reading code.

kh7
. added stream type check for client moving
. various cleanups, dead code removal
. minor relay structure mem leak fix
. fix source count check.
. enable the fileserve thread again

kh6
. stream dumping added
. mp3 title update via url fixed up
. fixed up listclients, moveclients.
. re-implemented source fallbacks

kh5
. 2 lots of ;; caused compile problems on windows
. enable curl for YP access
. allow the format specific get buffer routine to return
  NULL for retry, needs to set running to 0 now
. add vorbis header parsing for artist title stats
. add mp3 title parsing for the stats

kh4
. handle relay start and shutdown better.
. apply avl rwlock leak fix
. apply stats thread sleep avoidance fix
. update sock.c errno check
. enable stats/YP thread, add various stat triggers

kh3
. fix burst size larger than queue size case
. prevent relay connections initiating if connection is running
. send server package string from autoconf
. fixed a few segvs from previous update

kh2
. fix mp3 handling, metadata handling wasn't correct.
. fix flow control, locks/source counts with relay
. Added <burst-size> tag default 0 (in bytes)
. Use queue size field, was hardcoded before
. Don't filter refbuf if 0 length but have associated data
. handle EOF/error from socket in format_mp3

kh1 - core update
. removed many locks
. used single queue for source data.
. clients start at end of queue and allowed to repeat writes, thus
  giving bursts at connection. capped at 8 writes
. many secondary things not working. stream dumping, YP, stats,
  web interface
. mp3 incl shoutcast meta and ogg should work 

2003-10-12
    Added documentation

2003-04-23
    Support aliases

2003-03-09
    Support listening on multiple sockets.

2003-03-08
    Support for shoutcast source protocol added.

2003-03-08
    Started implementing generic admin interface. Supports (so far): 
    - dynamic configuration of mount fallbacks
        /admin/fallbacks?mount=/mount&fallback=/fallback
    - setting of mp3 metadata
        /admin/metadata?mount=/mount&mode=updinfo&song=New%20Title
    - dumping raw xml stats
        /admin/rawstats
    - listing all connected clients on a mountpoint: 
        /admin/listclients?mount=/mountname

2003-03-05
    Implemented the ability to reread the config file on SIGHUP. For now, this
    does not affect configuration for currently running sources (only new
    sources and global parameters like max-listeners)

2003-03-02 
    More features:	 
    -- per mountpoint listener maxima   
    -- static configuration of mountpoint fallbacks   
    -- stream dumping (write incoming stream to disk)

2003-02-27
    Fix log buffering on win32 - previously, logs were never flushed, so they
    only got output every few tens or hundreds of lines.

2003-02-27
	Support new icy-audio-info header, to communicate various parameters to
    clients and yp servers, including sample rate, quality, channels, bitrate

2003-02-25
    Full support for relaying mp3 metadata (if turned on in config file)

2003-02-25
    Allow configuration of maximum client queue length (in bytes)

2003-02-14
    Finished full IPv6 support. 

2003-02-12
	Allow configuring local mountpoint seperately from remote mountpoint for
    relays

2003-02-12
	Per mountpoint usernames and passwords (for sources)

2003-02-11
	Now that it's been officially assigned, use application/ogg instead of
	application/x-ogg

2003-02-07
    Allow relaying of mp3 streams from icecast 1.x and shoutcast

2003-02-07
    Added ability to configure individual relays (rather than just all streams
    from a single server).

2003-02-03
    Added support for YP directory services listings
	are only used by the yp listing routines

2003-02-03
    Support command line parameter -b to run in the background (not supported
    on win32)

2002-12-31 
    Implement configurable mountpoint fallbacks (on source exit, clients are
    transferred to another mountpoint automatically, without disconnecting
    them)

2002-12-31
    Implemented full mp3 metadata support.

(older stuff is missing from here)