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
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@ -3665,6 +3665,11 @@ static enum sip_get_destination_result get_destination(struct ast_sip_session *s
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}
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ast_copy_pj_str(session->exten, ast_sip_pjsip_uri_get_username(ruri), sizeof(session->exten));
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if (ast_strlen_zero(session->exten)) {
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/* Some SIP devices send an empty extension for PLAR: this should map to s */
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ast_debug(1, "RURI contains no user portion: defaulting to extension 's'\n");
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ast_copy_string(session->exten, "s", sizeof(session->exten));
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}
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/*
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* We may want to match in the dialplan without any user
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