[asterisk-dev] [Code Review] 4137: res_pjsip: Add disable_tcp_switch option.

[rmudgett]

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Review request for Asterisk Developers.


Repository: Asterisk


Description
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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.


Diffs
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  /branches/12/res/res_pjsip/config_system.c 426829 
  /branches/12/res/res_pjsip.c 426829 
  /branches/12/configs/pjsip.conf.sample 426829 
  /branches/12/UPGRADE.txt 426829 

Diff: https://reviewboard.asterisk.org/r/4137/diff/


Testing
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Tested the documentation and setting of the new option.

I'm not sure what system setup is needed to trigger pjproject to try switching from UDP to TCP for this option to prevent.


Thanks,

rmudgett

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