Inline. - rob
-----Original Message----- Hello, If a User agent Server or a Proxy server is authenticating an incoming reuest, say INVITE or register , Can the server send 100 trying before sending 401/407 Authentication required ? > Yes, you can have this scenerio: > > INVITE ---> > <--------- 100 > <--------- 401 or 407 100 Trying is to be sent to stop the retransmission of INVITE requests . Suppose the server sends 401/407 first and after the authentication is successful sends 100 trying, will there not be retransmissions of INVITE requests ? > > I think you may be a little confused on this issue. The normal sequence for > authentication would be: > INVITE ---> > <--------- 401 or 407 > ACK-------> > followed by a new INVITE with the authentication information: > INVITE ---> > The UAS can then send whichever response is proper for the INVITE, which may > be a 100 Trying, but can be any INVITE response. Any valid INVITE response > shall cause the UAC to stop retrying the INVITE. You should just return the > 100 Trying if you're going to take longer than 200mS to generate the response. > Thanks, Prabha N _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
