Yes, you can only drop ACK silently without any response. Actually, there's bug here, RFC3261 does not say response to ACK is not needed, people just accept it.
Check this out : http://www.ietf.org/mail-archive/web/sip/current/msg07238.html -Rockson -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Attila Sipos Sent: Thursday, July 31, 2008 5:05 PM To: Arif; [email protected] Subject: Re: [Sip-implementors] Regarding section 16.3 rfc 3261 in such cases you have to drop the ACK. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arif Sent: 31 July 2008 09:55 To: [email protected] Subject: [Sip-implementors] Regarding section 16.3 rfc 3261 Hi in section 16.3 its mentioned as if request fails any of the checks such as (1)reasonable syntax (2)URI scheme (3)max-forwards (4)loop detection (5)proxy require (6)proxy authorization then it should act as UA and send response.. my question is : ACK is also a request how should a proxy behave if it gets an ACK with any of the above conditions? regards arif _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
