APR-toolkit library

• Added a helper function to set default log source.
• Added a reset flag not to advance timer queue if elapsed time has been reset. Fixed timer skew issue.

MPF library

• Added a helper function to compare media descriptors.

MRCP server library

• Properly set the length of "Active-Request-Id-List" header field generated in STOP response messages. Fixed issue #190. Thanks Mert.
• Revised the way log source is implemented in plugins by means of MRCP_LOGGER_IMPLEMENT() and MRCP_LOG_SOURCE_IMPLEMENT() macros.
• Do not further process an MRCPv1 session offer (RTSP SETUP request), if engine_channel could not be created. Fixed issue #193.
• Implemented graceful server shutdown.
• Added functions mrcp_server_offline() and mrcp_server_online() to the server interface.
• Implemented handling of a TCP/MRCPv2 peer disconnect event. Fixed issue #162.
• Improved processing of SIP re-INVITEs. If a new offered session descriptor is identical to previous one, then do not re-build media streams.

MRCP transport library

• Do not allow a TCP/MRCPv2 connection to be re-used more than the number of times specified by the configuration parameter max-shared-use-count.
• Do not allow a TCP/MRCPv2 connection to remain in the connected state infinitely.
• Added a helper function to compare control media descriptors.

RTSP library

• Do not allow an RTSP connection to remain in the connected state infinitely.
• Implemented server-initiated session termination.
• Fixed processing of an error case, when the RTSP session-id is missing in non-SETUP/DESCRIBE requests.
• Implemented online/offline task interface methods by responding to incoming requests with 503 Service Unavailable in offline mode.

Sofia-SIP module (MRCPv2 agent)

• Implemented server-initiated session termination.
• Added mrcp_sofia_task as a common base for client and server agents by implementing apt_task interface via su_root.
• Implemented online/offline task interface methods by responding to incoming requests with 503 Service Unavailable in offline mode.
• Added support for SIP Session Timer (https://tools.ietf.org/html/rfc4028).

RTSP module (MRCPv1 agent)

• Implemented server-initiated session termination.

UniMRCP server application

• Added a new option -w or --without-cmdline, which allows to run unimrcpserver without command line. Fixed systemd issue.
• Added offline and online commands to the unimrcpserver command-line interface.
• Added new parameters "sip-session-expires" and "sip-min-session-expires" to default configuration of "sip-uas".
• Added a new parameter "inactivity-timeout" to default configuration of "rtsp-uas".
• Added new parameters "max-shared-use-count", "inactivity-timeout" and "termination-timeout" to default configuration of "mrcpv2-uas".

UMC sample application

• Split umcscenarios.xml configuration file into individual parts located in umc-scenarios subfolder.
• Fixed profile selection logic.

Miscellaneous

• Added spaces between string literals in log statements to address compilation warnings.
• Use apr_size_t instead of size_t consistently.
• If pkg-config is missing, return an error on ./configure.