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res_pjsip_session.c: Map empty extensions in INVITEs to s. 

Some SIP devices use an empty extension for PLAR functionality.

Rather than rejecting these empty extensions, we now use the s
extension for such calls to mirror the existing PLAR functionality
in Asterisk (e.g. chan_dahdi).

ASTERISK-30265 #close

Change-Id: I0861a405cd49bbbf532b52f7b47f0e2810832590
This commit is contained in:
Naveen Albert 2022-10-17 00:33:44 +00:00 committed by Friendly Automation
parent b83af13f65
commit 0d6003fa9a
1 changed files with 5 additions and 0 deletions
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5
res/res_pjsip_session.c
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@ -3665,6 +3665,11 @@ static enum sip_get_destination_result get_destination(struct ast_sip_session *s
}
ast_copy_pj_str(session->exten, ast_sip_pjsip_uri_get_username(ruri), sizeof(session->exten));
if (ast_strlen_zero(session->exten)) {
/* Some SIP devices send an empty extension for PLAR: this should map to s */
ast_debug(1, "RURI contains no user portion: defaulting to extension 's'\n");
ast_copy_string(session->exten, "s", sizeof(session->exten));
}
/*
* We may want to match in the dialplan without any user