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res_pjsip_keepalive: Add runtime configurable keepalive module for connection-oriented transports.

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Note that this is backport from trunk of r425825.

This change adds a module which is configurable using the keep_alive_interval setting in the
global section that will send a CRLF keep alive to all active connection-oriented transports at
the provided interval. This is useful because it can help keep connections open through NATs.
This functionality also exists within PJSIP but can not be controlled at runtime and requires
recompiling it.

Review: https://reviewboard.asterisk.org/r/4084/

ASTERISK-24644 #close


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@430084 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Jordan
2014-12-24 13:25:04 +00:00
parent 006ffdcfb2
commit 915bb88d3e
6 changed files with 303 additions and 0 deletions
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7
include/asterisk/res_pjsip.h
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@@ -1967,4 +1967,11 @@ char *ast_sip_get_debug(void);
} \
} while(0)
/*!
* \brief Retrieve the system keep alive interval setting.
*
* \retval the keep alive interval.
*/
unsigned int ast_sip_get_keep_alive_interval(void);
#endif /* _RES_PJSIP_H */