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This fixes a bug that could cause the global listener count of Icecast to
be negative. This was caused due to wrong handling of errors in the
format_prepare_headers function.

Fixes: #2199

Thanks a lot to Simeon Völkel (0xBD4E031CDB4043C9) for reporting
and investigating the bug.

This fixes some possible segfaults that could happen if the header
(re)allocation fails.

This adds to all responses:
 * "Accept-Encoding: identity"
 * "Connection: close"
 * "Allow: GET, SOURCE" or "Allow: GET" (on admin pages)

This is to generate some infrastructure for Icecast to tell futur
source clients what is supported.

"Upgrade: TLS/1.0" should be added later when upgrade support is present.

See: #2152

From: Erik van Pienbroek <epienbro@fedoraproject.org>
Date: Mon, 22 Dec 2014 18:02:09 +0100

All metadata is now extracted from Vorbis streams and ICY streams
and exported as new <metadata> tag into admin/stats if specific
mountpoint is requested.

To testers:
 - Please test with Ogg Vorbis streams.
 - Please test with Ogg Vorbis + Theora streams.
 - Please test chained Ogg streams.
 - Please test with ICY streams.

close #2106

svn path=/icecast/trunk/icecast/; revision=19376

svn path=/icecast/trunk/icecast/; revision=19370

svn path=/icecast/trunk/icecast/; revision=19344

patch to fix regression on header size with large headers introduced by support of <server-id> and <http-headers>. This should ensure we have at least space for 2kB of extra headers. Depending on function and call we may have much more space.

Please test this very carefully.
Some pointers what should be in the tests (NOT complet list):
- request to 'static' web/ and admin/ pages.
- requests to playlist generation.
- requests to streams.
- requests to admin/ manipulation functions.
- test everything with at least 8kB of extra headers, then reduce in 1kB (or 512B) steps.
- see if response is correct OR 500 is returned.
- run under valgrind or similar to see no buffer overflow or similiar will happen.
- take a cookie!

svn path=/icecast/trunk/icecast/; revision=19300

Added support for <http-headers> within <mount>. Also support merging of headers (normal mount + default mount). See #1885

svn path=/icecast/trunk/icecast/; revision=19269

LOG_{ERROR|WARN|INFO|DEBUG}() -> ICECAST_LOG_{ERROR|WARN|INFO|DEBUG}(); this is to avoid collision with LOG_INFO that is defined as part of syslog.

svn path=/icecast/trunk/icecast/; revision=19257

svn path=/icecast/trunk/icecast/; revision=19229

All bets are off, we're trying our best using legacy handling code.

svn path=/icecast/trunk/icecast/; revision=18907

The default mount is a block in the config file that contains settings for
all mount points that do not have a block in configfile themself.
This is implemented by a <mount type="default">-block.
In this case the <mount>-block MUST NOT contain a <mount-name>-subblock.

svn path=/icecast/trunk/icecast/; revision=18902

svn path=/icecast/trunk/icecast/; revision=18543

svn path=/icecast/trunk/icecast/; revision=18465

This is currently not implemented for SOURCE and STATS clients as
I suspect to break them. This needs some more research.
close #1639, see #1870 and #1885.

svn path=/icecast/trunk/icecast/; revision=18464

This is a self-contained ebml parser. It just looks
for cluster boundaries and breaks the stream there.

svn path=/icecast/branches/icecast-webm/; revision=18297

svn path=/icecast/trunk/icecast/; revision=14786

svn path=/icecast/trunk/icecast/; revision=14306

svn path=/icecast/trunk/icecast/; revision=14016

for flash players. closes #1115

svn path=/icecast/trunk/icecast/; revision=14014

svn path=/icecast/trunk/icecast/; revision=13704

svn path=/icecast/trunk/icecast/; revision=13559

active (on demand relays may not actually start when triggered)

svn path=/icecast/trunk/icecast/; revision=13503

to theora streams triggers a search for a keyframe.

svn path=/icecast/trunk/icecast/; revision=11004

I've taken out the client_create out of the connection_complete_source and put
it in slave, that way we can control the cleanup of the memory/socket better, the
change also meant fallback to file tests were slghtly different.

svn path=/icecast/trunk/icecast/; revision=9847

svn path=/icecast/trunk/icecast/; revision=9711

some of the burst data

svn path=/icecast/trunk/icecast/; revision=9514

svn path=/icecast/trunk/icecast/; revision=9434

svn path=/icecast/trunk/icecast/; revision=9406

thread, this will allow on-demand relays to fail and still handle the initial
listener correctly (fallback or 404 response).

svn path=/icecast/trunk/icecast/; revision=9399

svn path=/icecast/trunk/icecast/; revision=9345

stuff, type check cleanup and code reduction in YP

svn path=/icecast/trunk/icecast/; revision=9331

svn path=/icecast/trunk/icecast/; revision=8481

clients before keyframe. For vorbis-only streams, perform rebuild to
flush pages more frequently and to provide url updating mechanism for
titles 

svn path=/icecast/trunk/icecast/; revision=8341

svn path=/icecast/trunk/icecast/; revision=8236