Commit graph

5147 commits

Author SHA1 Message Date
roadkill
9b5d20e3d5 res/res_pjsip.c: allow user=phone when number contain *#
if From number contain * or # asterisk will not add user=phone

Currently only number that uses AST_DIGIT_ANYNUM can have "user=phone" but the validation should use AST_DIGIT_ANY
this is a problem when you want to send call to ISUP
as they will disregard the From header and either replace From with anonymous or with p-asserted-identity

ASTERISK-29261
Reported by: Mark Petersen
Tested by: Mark Petersen

Change-Id: I3307bdbf757582740bfee4110e85f7b6c9291cc4
2021-01-27 11:04:23 -06:00
Boris P. Korzun
92f5cf7f2d res_musiconhold: Add support of various URL-schemes by MoH.
Provided a support of variuos URL-schemes for res_musiconhold,
registered by ast_bucket_scheme_register().

ASTERISK-29262 #close

Change-Id: If0ea8697587353dce358a70035d82649fd4632b6
2021-01-25 10:38:44 -06:00
Alexander Traud
10a0a0c59b pjsip_scheduler: Fix pjsip show scheduled_tasks like for compiler Clang.
Otherwise, Clang 10 warned because of logical-not-parentheses.

Change-Id: Ia8fb493f727b08070eb2dcf520c08df34ed11d79
2021-01-18 10:37:28 -06:00
Alexander Traud
df6afadf26 res_pjsip_session: Avoid sometimes-uninitialized warning with Clang.
ASTERISK-29248

Change-Id: I2b17bd5ffb246bc64c463402c9831413da78a556
2021-01-18 10:30:27 -06:00
Sean Bright
6d2bec7028 res_pjsip_pubsub: Fix truncation of persisted SUBSCRIBE packet
The last argument to ast_copy_string() is the buffer size, not the
number of characters, so we add 1 to avoid stamping out the final \n
in the persisted SUBSCRIBE message.

Change-Id: I019b78942836f57965299af15d173911fcead5b2
2021-01-18 10:27:33 -06:00
Robert Cripps
24e678b9bb res/res_pjsip_session.c: Check that media type matches in
function ast_sip_session_media_state_add.

Check ast_media_type matches when a ast_sip_session_media is found
otherwise when transitioning from say image to audio, the wrong
session is returned in the first if statement.

ASTERISK-29220 #close

Change-Id: I6f6efa9b821ebe8881bb4c8c957f8802ddcb4b5d
2021-01-14 00:57:38 -06:00
Jean Aunis
c559667868 Stasis/messaging: tech subscriptions conflict with endpoint subscriptions.
When both a tech subscription and an endpoint subscription exist for a given
endpoint, TextMessageReceived events are dispatched to the tech subscription
only.

ASTERISK-29229

Change-Id: I9eac4cba5f9e27285a282509395347abc58fc2b8
2021-01-13 09:37:39 -06:00
Ivan Poddubnyi
f2aa6c7017 chan_pjsip: Assign SIPDOMAIN after creating a channel
session->channel doesn't exist until chan_pjsip creates it, so intead of
setting a channel variable every new incoming call sets one and the same
global variable.

This patch moves the code to chan_pjsip so that SIPDOMAIN is set on
a newly created channel, it also removes a misleading reference to
channel->session used to fetch call pickup configuraion.

ASTERISK-29240

Change-Id: I90c9bbbed01f5d8863585631a29322ae4e046755
2021-01-13 08:27:41 -06:00
George Joseph
9a4486e9fb Revert "res_pjsip_outbound_registration.c: Use our own scheduler and other stuff"
This reverts commit 2fe76dd816.

Reason for revert: Too many issues reported.  Need to research and correct.

ASTERISK-29230
ASTERISK-29231
Reported by: Michael Maier

Change-Id: I6453af680e17d8ffe7af2c5de7e1b2a58c8793cb
2021-01-11 09:26:06 -06:00
Nick French
505939c9ed res_pjsip: Prevent segfault in UDP registration with flow transports
Segfault occurs during outbound UDP registration when all
transport states are being iterated over. The transport object
in the transport is accessed, but flow transports have a NULL
transport object.

Modify to not iterate over any flow transport

ASTERISK-29210 #close

Change-Id: If28dc3a18bdcbd0a49598b09b7fe4404d45c996a
2021-01-04 05:01:30 -06:00
Torrey Searle
51e2187a14 res/res_pjsip_diversion: prevent crash on tel: uri in History-Info
Add a check to see if the URI is a Tel URI and prevent crashing on
trying to retrieve the reason parameter.

ASTERISK-29191
ASTERISK-29219

Change-Id: I0320aa205f22cda511d60a2edf2b037e8fd6cc37
(cherry picked from commit a7aea71e60)
2021-01-04 04:09:30 -06:00
Richard Mudgett
6d7af72559 res_pjsip_session.c: Fix compiler warnings.
AST_VECTOR_SIZE() returns a size_t.  This is not always equivalent to an
unsigned long on all machines.

Change-Id: I0a4189a104e6e3a2e2273de06620eaef19df9338
2020-12-28 08:27:14 -06:00
Sungtae Kim
02c4b2ac60 res_pjsip_session: Fixed NULL active media topology handle
Added NULL pointer check to prevent Asterisk crash.

ASTERISK-29215

Change-Id: If07e50ea8d78cb610af9195fc13b5dca4bfcef95
2020-12-23 13:55:28 -06:00
Sean Bright
357510cec3 app_chanspy: Spyee information missing in ChanSpyStop AMI Event
The documentation in the wiki says there should be spyee-channel
information elements in the ChanSpyStop AMI event.

    https://wiki.asterisk.org/wiki/x/Xc5uAg

However, this is not the case in Asterisk <= 16.10.0 Version. We're
using these Spyee* arguments since Asterisk 11.x, so these arguments
vanished in Asterisk 12 or higher.

For maximum compatibility, we still send the ChanSpyStop event even if
we are not able to find any 'Spyee' information.

ASTERISK-28883 #close

Change-Id: I81ce397a3fd614c094d043ffe5b1b1d76188835f
2020-12-17 14:03:38 -06:00
Sungtae Kim
91fc57f56b res_ari: Fix wrong media uri handle for channel play
Fixed wrong null object handle in
/channels/<channel_id>/play request handler.

ASTERISK-29188

Change-Id: I6691c640247a51ad15f23e4a203ca8430809bafe
2020-12-17 11:06:48 -06:00
Pirmin Walthert
0b10995811 res_pjsip_nat.c: Create deep copies of strings when appropriate
In rewrite_uri asterisk was not making deep copies of strings when
changing the uri. This was in some cases causing garbage in the route
header and in other cases even crashing asterisk when receiving a
message with a record-route header set. Thanks to Ralf Kubis for
pointing out why this happens. A similar problem was found in
res_pjsip_transport_websocket.c. Pjproject needs as well to be patched
to avoid garbage in CANCEL messages.

ASTERISK-29024 #close

Change-Id: Ic5acd7fa2fbda3080f5f36ef12e46804939b198b
2020-12-17 09:11:10 -06:00
Nathan Bruning
5e426987c2 res_musiconhold: Don't crash when real-time doesn't return any entries
ASTERISK-29211 #close

Change-Id: Ifbf0a4f786ab2a52342f9d1a1db4c9907f069877
2020-12-16 09:20:12 -06:00
Joshua C. Colp
9ee1f7154f res_pjsip_pidf_digium_body_supplement: Support Sangoma user agent.
This adds support for both Digium and Sangoma user agent strings
for the Sangoma specific body supplement.

Change-Id: Ib99362b24b91d3cbe888d8b2fce3fad5515d9482
2020-12-16 08:01:11 -06:00
Joshua C. Colp
6475fe3dd7 pjsip: Match lifetime of INVITE session to our session.
In some circumstances it was possible for an INVITE
session to be destroyed while we were still using it.
This occurred due to the reference on the INVITE session
being released internally as a result of its state
changing to DISCONNECTED.

This change adds a reference to the INVITE session
which is released when our own session is destroyed,
ensuring that the INVITE session remains valid for
the lifetime of our session.

ASTERISK-29022

Change-Id: I300c6d9005ff0e6efbe1132daefc7e47ca6228c9
2020-12-09 13:06:42 -06:00
Sean Bright
90fd1fd96a res_http_media_cache.c: Set reasonable number of redirects
By default libcurl does not follow redirects, so we explicitly enable
it by setting CURLOPT_FOLLOWLOCATION. Once that is enabled, libcurl
will follow up to CURLOPT_MAXREDIRS redirects, which by default is
configured to be unlimited.

This patch sets CURLOPT_MAXREDIRS to a more reasonable default (8). If
we determine at some point that this needs to be increased on
configurable it is a trivial change.

ASTERISK-29173 #close

Change-Id: I4925ebbcf0c7d728bb9252b3795b3479ae225b30
2020-12-09 13:05:27 -06:00
Stanislav
ab7a08b4ef res_pjsip_stir_shaken: Fix module description
the 'J' is missing in module description.
"PSIP STIR/SHAKEN Module for Asterisk" -> "PJSIP STIR/SHAKEN Module for Asterisk"

ASTERISK-29175 #close

Change-Id: I17da008540ee2e8496b644d05f995b320b54ad7a
2020-12-01 11:25:15 -06:00
Alexander Traud
b91fb3c396 loader: Sync load- and build-time deps.
In MODULEINFO, each depend has to be listed in .requires of AST_MODULE_INFO.

ASTERISK-29148

Change-Id: I254dd33194ae38d2877b8021c57c2a5deb6bbcd2
2020-11-20 13:51:02 -06:00
Alexander Greiner-Baer
fba10fb54c res_pjsip: set Accept-Encoding to identity in OPTIONS response
RFC 3261 says that the Accept-Encoding header should be present
in an options response. Permitted values according to RFC 2616
are only compression algorithms like gzip or the default identity
encoding. Therefore "text/plain" is not a correct value here.
As long as the header is hard coded, it should be set to "identity".

Without this fix an Alcatel OmniPCX periodically logs warnings like
"[sip_acceptIncorrectHeader] Header Accept-Encoding is malformed"
on a SIP Trunk.

ASTERISK-29165 #close

Change-Id: I0aa2211ebf0b4c2ed554ac7cda794523803a3840
2020-11-19 16:14:33 -06:00
George Joseph
2fe76dd816 res_pjsip_outbound_registration.c: Use our own scheduler and other stuff
* Instead of using the pjproject timer heap, we now use our own
  pjsip_scheduler.  This allows us to more easily debug and allows us to
  see times in "pjsip show/list registrations" as well as being able to
  see the registrations in "pjsip show scheduled_tasks".

* Added the last registration time, registration interval, and the next
  registration time to the CLI output.

* Removed calls to pjsip_regc_info() except where absolutely necessary.
  Most of the calls were just to get the server and client URIs for log
  messages so we now just save them on the client_state object when we
  create it.

* Added log messages where needed and updated most of the existong ones
  to include the registration object name at the start of the message.

Change-Id: I4534a0fc78c7cb69f23b7b449dda9748c90daca2
2020-11-10 09:13:56 -05:00
George Joseph
5a4640d208 pjsip_scheduler.c: Add type ONESHOT and enhance cli show command
* Added a ONESHOT type that never reschedules.

* Added "like" capability to "pjsip show scheduled_tasks" so you can do
  the following:

  CLI> pjsip show scheduled_tasks like outreg
  PJSIP Scheduled Tasks:

  Task Name                                     Interval  Times Run ...
  ============================================= ========= ========= ...
  pjsip/outreg/testtrunk-reg-0-00000074            50.000   oneshot ...
  pjsip/outreg/voipms-reg-0-00000073              110.000   oneshot ...

* Fixed incorrect display of "Next Start".

* Compacted the displays of times in the CLI.

* Added two new functions (ast_sip_sched_task_get_times2,
  ast_sip_sched_task_get_times_by_name2) that retrieve the interval,
  next start time, and next run time in addition to the times already
  returned by ast_sip_sched_task_get_times().

Change-Id: Ie718ca9fd30490b8a167bedf6b0b06d619dc52f3
2020-11-09 16:38:37 -06:00
Alexander Traud
b52acb87b0 res_pjsip/config_transport: Load and run without OpenSSL.
ASTERISK-28933
Reported-by: Walter Doekes

Change-Id: I65eac49e5b0a79261ea80e2b9b38a836886ed59f
2020-11-09 08:54:45 -06:00
Alexander Traud
64d2de19ee res_stir_shaken: Include OpenSSL headers where used actually.
This avoids the inclusion of the OpenSSL headers in the public header,
which avoids one external library dependency in res_pjsip_stir_shaken.

Change-Id: I6a07e2d81d2b5442e24e99b8cc733a99f881dcf4
2020-11-09 08:35:16 -06:00
Kevin Harwell
b82f880647 AST-2020-001 - res_pjsip: Return dialog locked and referenced
pjproject returns the dialog locked and with a reference. However,
in Asterisk the method that handles this decrements the reference
and removes the lock prior to returning. This makes it possible,
under some circumstances, for another thread to free said dialog
before the thread that created it attempts to use it again. Of
course when the thread that created it tries to use a freed dialog
a crash can occur.

This patch makes it so Asterisk now returns the newly created
dialog both locked, and with an added reference. This allows the
caller to de-reference, and unlock the dialog when it is safe to
do so.

In the case of a new SIP Invite the lock, and reference are now
held for the entirety of the new invite handling process.
Otherwise it's possible for the dialog, or its dependent objects,
like the transaction, to disappear. For example if there is a TCP
transport error.

ASTERISK-29057 #close

Change-Id: I5ef645a47829596f402cf383dc02c629c618969e
(cherry picked from commit 6baa4b53be)
2020-11-05 12:56:21 -05:00
Ben Ford
cd8f8b94f8 AST-2020-002 - res_pjsip: Stop sending INVITEs after challenge limit.
If Asterisk sends out and INVITE and receives a challenge with a
different nonce value each time, it will continually send out INVITEs,
even if the call is hung up. The endpoint must be configured for
outbound authentication in order for this to occur. A limit has been set
on outbound INVITEs so that, once reached, Asterisk will stop sending
INVITEs and the transaction will terminate.

ASTERISK-29013

Change-Id: I2d001ca745b00ca8aa12030f2240cd72363b46f7
2020-11-05 10:42:59 -06:00
Alexander Traud
28faafd1c4 Compiler fixes for GCC when printf %s is NULL
ASTERISK-29146

Change-Id: Ib04bdad87d729f805f5fc620ef9952f58ea96d41
2020-11-03 15:47:33 -06:00
Kevin Harwell
c62193c5de res_pjsip, res_pjsip_session: initialize local variables
This patch initializes a couple of local variables to some default values.
Interestingly, in the 'pj_status_t dlg_status' case the value not being
initialized caused memory to grow, and not be recovered, in the off nominal
path (at least on my machine).

Change-Id: I22ee65e1e1bff8efacea8a167c6c8428898523f7
2020-10-28 09:51:44 -05:00
Nick French
bd98e153d1 res_pjsip_session: Restore calls to ast_sip_message_apply_transport()
Commit 44bb0858cb ("debugging: Add enough
to choke a mule") accidentally removed calls to
ast_sip_message_apply_transport when it was attempting to just add
debugging code.

The kiss of death was saying that there were no functional changes in
the commit comment.

This makes outbound calls that use the 'flow' transport mechanism fail,
since this call is used to relay headers into the outbound INVITE
requests.

ASTERISK-29124 #close

Change-Id: I0f3e32c2e8ac415e30b1d29966d75a1546f0526a
2020-10-28 07:55:16 -05:00
Joshua C. Colp
dcd2ed69a3 res_pjsip: Adjust outgoing offer call pref.
This changes the outgoing offer call preference
default option to match the behavior of previous
versions of Asterisk.

The additional advanced codec negotiation options
have also been removed from the sample configuration
and marked as reserved for future functionality in
XML documentation.

The codec preference options have also been fixed to
enforce local codec configuration.

ASTERISK-29109

Change-Id: Iad19347bd5f3d89900c15ecddfebf5e20950a1c2
2020-10-13 11:10:56 -03:00
Jean Aunis
61116d5dbc resource_endpoints.c: memory leak when providing a 404 response
When handling a send_message request to a non-existing endpoint, the response's
body is overriden and not properly freed.

ASTERISK-29108

Change-Id: Ie1d3d70065f80793445b60f5e4a7eb31b4b9c5c8
2020-10-05 17:55:45 +02:00
Kevin Harwell
56028426de Logging: Add debug logging categories
Added debug logging categories that allow a user to output debug
information based on a specified category. This lets the user limit,
and filter debug output to data relevant to a particular context,
or topic. For instance the following categories are now available for
debug logging purposes:

  dtls, dtls_packet, ice, rtcp, rtcp_packet, rtp, rtp_packet,
  stun, stun_packet

These debug categories can be enable/disable via an Asterisk CLI command.

While this overrides, and outputs debug data, core system debugging is
not affected by this patch. Statements still output at their appropriate
debug level. As well backwards compatibility has been maintained with
past debug groups that could be enabled using the CLI (e.g. rtpdebug,
stundebug, etc.).

ASTERISK-29054 #close

Change-Id: I6e6cb247bb1f01dbf34750b2cd98e5b5b41a1849
2020-10-02 12:58:18 -05:00
Sean Bright
51cba591e3 pbx.c: On error, ast_add_extension2_lockopt should always free 'data'
In the event that the desired extension already exists,
ast_add_extension2_lockopt() will free the 'data' it is passed before
returning an error, so we should not be freeing it ourselves.

Additionally, there were two places where ast_add_extension2_lockopt()
could return an error without also freeing the 'data' pointer, so we
add that.

ASTERISK-29097 #close

Change-Id: I904707aae55169feda050a5ed7c6793b53fe6eae
2020-10-02 10:11:38 -05:00
Holger Hans Peter Freyther
9c0ded6e76 res_pjsip_sdp_rtp: Fix accidentally native bridging calls
Stop advertising RFC2833 support on the rtp_engine when DTMF mode is
auto but no tel_event was found inside SDP file.

On an incoming call create_rtp will be called and when session->dtmf is
set to AST_SIP_DTMF_AUTO, the AST_RTP_PROPERTY_DTMF will be set without
looking at the SDP file.

Once get_codecs gets called we move the DTMF mode from RFC2833 to INBAND
but continued to advertise RFC2833 support.

This meant the native_rtp bridge would falsely consider the two channels
as compatible. In addition to changing the DTMF mode we now set or
remove the AST_RTP_PROPERTY_DTMF.

The property is checked in ast_rtp_dtmf_compatible and called by
native_rtp_bridge_compatible.

ASTERISK-29051 #close

Change-Id: I1e0c1e324598a437932c0b7836bcb626aba8e287
2020-10-01 07:05:57 -05:00
lvl
990c72bbcf res_musiconhold: Load all realtime entries, not just the first
ASTERISK-29099

Change-Id: I45636679c0fb5a5f59114c8741626631a604e8a6
2020-09-30 08:01:41 -05:00
Torrey Searle
e7bd97e2e5 res_pjsip_diversion: fix double 181
Arming response to both AST_SIP_SESSION_BEFORE_REDIRECTING and
AST_SIP_SESSION_BEFORE_MEDIA causes 302 to to be handled twice,
resulting in to 181 being generated.

Change-Id: I866e5461564644ffb8a5e12b6f1330b50a7b63ab
2020-09-29 07:24:51 -05:00
Sean Bright
505211551a res_musiconhold: Clarify that playlist mode only supports HTTP(S) URLs
Change-Id: I41e77a04e4a523f4ed61a7a20b738ffd42be441e
2020-09-28 14:02:25 -05:00
Joshua C. Colp
23e427bbd2 res_pjsip_session: Fix stream name memory leak.
When constructing a stream name based on the media type
and position the allocated name was not being freed
causing a leak.

Change-Id: I52510863b24a2f531f0a55b440bb2c81844029de
2020-09-23 10:58:33 -05:00
Sean Bright
0aaf9aa6de res_musiconhold: Start playlist after initial announcement
Only track our sample offset if we are playing a non-announcement file,
otherwise we will skip that number of samples when we start playing the
first MoH file.

ASTERISK-24329 #close

Change-Id: Ib6b3c84fcaa1063889ab38ba7e7fc50050a3ccfc
2020-09-23 10:03:52 -05:00
Joshua C. Colp
f67f5676b7 res_pjsip_session: Fix session reference leak.
The ast_sip_dialog_get_session function returns the session
with reference count increased. This was not taken into
account and was causing sessions to remain around when they
should not be.

ASTERISK-29089

Change-Id: I430fa721b0a824311a59effec6056e9ec528e3e8
2020-09-23 10:02:45 -05:00
Michal Hajek
b4ab0dd41a res_stasis.c: Add compare function for bridges moh container
Sometimes not play MOH on bridge.

ASTERISK-29081
Reported-by: Michal Hajek <michal.hajek@daktela.com>

Change-Id: I760c73e0c9be1d340303b5d1c18a00c4759e8232
2020-09-23 09:57:32 -05:00
Sean Bright
5a0e1d256d audiosocket: Fix module menuselect descriptions
The module description needs to be on the same line as the
AST_MODULE_INFO or it is not parsed correctly.

Change-Id: I9ba11df1415369790e8656fcb527bb2749373c21
2020-09-22 09:02:20 -05:00
Sean Bright
bc038e6191 res_pjsip_session.c: Fix build when TEST_FRAMEWORK is not defined
Change-Id: Id4852c26e9c412af8e37b5dd3c15da9453ad3276
2020-09-16 09:45:45 -05:00
Torrey Searle
888090ab18 res_pjsip_diversion: implement support for History-Info
Implemention of History-Info capable of interworking with Diversion
Header following RFC7544

ASTERISK-29027 #close

Change-Id: I2296369582d4b295c5ea1e60bec391dd1d318fa6
2020-09-16 09:08:07 -05:00
George Joseph
53910b1f25 res_pjsip_session: Fix issue with COLP and 491
The recent 491 changes introduced a check to determine if the active
and pending topologies were equal and to suppress the re-invite if they
were. When a re-invite is sent for a COLP-only change, the pending
topology is NULL so that check doesn't happen and the re-invite is
correctly sent. Of course, sending the re-invite sets the pending
topology.  If a 491 is received, when we resend the re-invite, the
pending topology is set and since we didn't request a change to the
topology in the first place, pending and active topologies are equal so
the topologies-equal check causes the re-invite to be erroneously
suppressed.

This change checks if the topologies are equal before we run the media
state resolver (which recreates the pending topology) so that when we
do the final topologies-equal check we know if this was a topology
change request.  If it wasn't a change request, we don't suppress
the re-invite even though the topologies are equal.

ASTERISK-29014

Change-Id: Iffd7dd0500301156a566119ebde528d1a9573314
2020-09-14 09:41:02 -06:00
George Joseph
44bb0858cb debugging: Add enough to choke a mule
Added to:
 * bridges/bridge_softmix.c
 * channels/chan_pjsip.c
 * include/asterisk/res_pjsip_session.h
 * main/channel.c
 * res/res_pjsip_session.c

There NO functional changes in this commit.

Change-Id: I06af034d1ff3ea1feb56596fd7bd6d7939dfdcc3
2020-09-14 09:28:29 -05:00
George Joseph
86f1bce186 res_pjsip_session: Handle multi-stream re-invites better
When both Asterisk and a UA send re-invites at the same time, both
send 491 "Transaction in progress" responses to each other and back
off a specified amount of time before retrying. When Asterisk
prepares to send its re-invite, it sets up the session's pending
media state with the new topology it wants, then sends the
re-invite.  Unfortunately, when it received the re-invite from the
UA, it partially processed the media in the re-invite and reset
the pending media state before sending the 491 losing the state it
set in its own re-invite.

Asterisk also was not tracking re-invites received while an existing
re-invite was queued resulting in sending stale SDP with missing
or duplicated streams, or no re-invite at all because we erroneously
determined that a re-invite wasn't needed.

There was also an issue in bridge_softmix where we were using a stream
from the wrong topology to determine if a stream was added.  This also
caused us to erroneously determine that a re-invite wasn't needed.

Regardless of how the delayed re-invite was triggered, we need to
reconcile the topology that was active at the time the delayed
request was queued, the pending topology of the queued request,
and the topology currently active on the session.  To do this we
need a topology resolver AND we need to make stream named unique
so we can accurately tell what a stream has been added or removed
and if we can re-use a slot in the topology.

Summary of changes:

 * bridge_softmix:
   * We no longer reset the stream name to "removed" in
     remove_all_original_streams().  That was causing  multiple streams
     to have the same name and wrecked the checks for duplicate streams.

   * softmix_bridge_stream_sources_update() was checking the old_stream
     to see if it had the softmix prefix and not considering the stream
     as "new" if it did.  If the stream in that slot has something in it
     because another re-invite happened, then that slot in old might
     have a softmix stream but the same stream in new might actually
     be a new one.  Now we check the new_stream's name instead of
     the old_stream's.

 * stream:
   * Instead of using plain media type name ("audio", "video", etc) as
     the default stream name, we now append the stream position to it
     to make it unique.  We need to do this so we can distinguish multiple
     streams of the same type from each other.

   * When we set a stream's state to REMOVED, we no longer reset its
     name to "removed" or destroy its metadata.  Again, we need to
     do this so we can distinguish multiple streams of the same
     type from each other.

 * res_pjsip_session:
   * Added resolve_refresh_media_states() that takes in 3 media states
     and creates an up-to-date pending media state that includes the changes
     that might have happened while a delayed session refresh was in the
     delayed queue.

   * Added is_media_state_valid() that checks the consistency of
     a media state and returns a true/false value. A valid state has:
     * The same number of stream entries as media session entries.
         Some media session entries can be NULL however.
     * No duplicate streams.
     * A valid stream for each non-NULL media session.
     * A stream that matches each media session's stream_num
       and media type.

   * Updated handle_incoming_sdp() to set the stream name to include the
     stream position number in the name to make it unique.

   * Updated the ast_sip_session_delayed_request structure to include both
     the pending and active media states and updated the associated delay
     functions to process them.

   * Updated sip_session_refresh() to accept both the pending and active
     media states that were in effect when the request was originally queued
     and to pass them on should the request need to be delayed again.

   * Updated sip_session_refresh() to call resolve_refresh_media_states()
     and substitute its results for the pending state passed in.

   * Updated sip_session_refresh() with additional debugging.

   * Updated session_reinvite_on_rx_request() to simply return PJ_FALSE
     to pjproject if a transaction is in progress.  This stops us from
     creating a partial pending media state that would be invalid later on.

   * Updated reschedule_reinvite() to clone both the current pending and
     active media states and pass them to delay_request() so the resolver
     can tell what the original intention of the re-invite was.

   * Added a large unit test for the resolver.

ASTERISK-29014

Change-Id: Id3440972943c611a15f652c6c569fa0e4536bfcb
2020-09-14 09:27:14 -05:00