[Spce-user] Always 100 Trying

Jon Bonilla (Manwe) manwe at sipdoc.net
Thu Dec 5 04:38:00 EST 2019


It's just a cosmetic issue but the proxy always sends 100 trying to every
request. According to the RFC, an UAS SHOULD NOT send provisional responses to
non-INVITE requests. Sending a Provisional Response

   One largely non-method-specific guideline for the generation of
   responses is that UASs SHOULD NOT issue a provisional response for a
   non-INVITE request.  Rather, UASs SHOULD generate a final response to
   a non-INVITE request as soon as possible.

16.2 Stateful Proxy

 A stateful proxy creates a new server transaction for each new
   request received.  Any retransmissions of the request will then be
   handled by that server transaction per Section 17.  The proxy core
   MUST behave as a UAS with respect to sending an immediate provisional
   on that server transaction (such as 100 Trying) as described in
   Section 8.2.6.  Thus, a stateful proxy SHOULD NOT generate 100
   (Trying) responses to non-INVITE requests.



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