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res_pjsip: Add disable_tcp_switch option.

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When a packet exceeds the MTU, pjproject will switch from UDP to TCP.  In
some circumstances (on some networks), this can cause some issues with
messages not getting sent to the correct destination - and can also cause
connections to get dropped due to quirks in pjproject deciding to
terminate TCP connections with no messages.

While fixing the routing/messaging issues is important, having a
configuration option in Asterisk that tells pjproject to not switch over
to TCP would be useful.  That way, if some glitch is discovered on some
other network/site, we can at least disable the behavior until a fix is
put into place.

AFS-197 #close

Review: https://reviewboard.asterisk.org/r/4137/
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Merged revisions 427129 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 427130 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@427137 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2014-11-03 18:22:59 +00:00
parent b9aeff9580
commit 33f0251b6c
4 changed files with 22 additions and 0 deletions
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4
configs/samples/pjsip.conf.sample
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@@ -830,6 +830,10 @@
; should be disposed of (default: "60")
;threadpool_max_size=0 ; Maximum number of threads in the res_pjsip threadpool
; A value of 0 indicates no maximum (default: "0")
;disable_tcp_switch=no ; Disable automatic switching from UDP to TCP transports
; if outgoing request is too large.
; See RFC 3261 section 18.1.1.
; (default: "no")
;type= ; Must be of type system (default: "")
;==========================GLOBAL SECTION OPTIONS=========================