[asterisk-dev] [Code Review] 3653: chan_sip: (Optionally) poll even on first part of TLS message

[Alexander Traud]

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Review request for Asterisk Developers.


Bugs: ASTERISK-18345
    https://issues.asterisk.org/jira/browse/ASTERISK-18345


Repository: Asterisk


Description
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With some large SDP, a *second* poll is required on the first part of a TLS message.

The current code did not poll a second time because the variable need_poll was inited with yes (1). That poll was a no-operation because there was a socket event already (which mandates fgets without poll). In the current code, poll returned immediately, fgets returned NULL, after_poll was yes (1), sip_tls_read returned failed (-1), _sip_tcp_helper_thread went to cleanup, called ast_tcptls_close_session_file, which closed the TLS connection.

The proposed patch, reads the gets the first message. If that failed, it does poll. This fixed all large SDP issues with SIP over TLS which I faced.

I am aware there were changes committed to tcptls.c just recently (revision 415907). Anyway, let us fix this bug as well.


Diffs
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  trunk/channels/chan_sip.c 416319 

Diff: https://reviewboard.asterisk.org/r/3653/diff/


Testing
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Asterisk 12.3


Thanks,

Alexander Traud

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