Hi all, The RFC 3261 has the following text (Page 76): " Requests that do not change in any way the state of a dialog may be received within a dialog (for example, an OPTIONS request). They are processed as if they had been received outside the dialog. If the remote sequence number is empty, it MUST be set to the value of the sequence number in the CSeq header field value in the request. If the remote sequence number was not empty, but the sequence number of the request is lower than the remote sequence number, the request is out of order and MUST be rejected with a 500 (Server Internal Error) response. " Aren't these 2 paragraphs contradictory in some sense? If the UAC sends a UAS 2 OPTIONS in quick succession, the first paragraph would imply that the UAS should send a 200 OK to both even if they came out of ordered at the UAS end. The very next paragraph says that in case of out-or-ordered CSeq, the UAS should send a 200 OK to the higher CSeq OPTIONS (since it arrived first) & 500 response to the lower CSeq OPTIONS.... Which one is true? (I definitely seem to be missing something here :) Apologies if this had been asked earlier on the list. Any pointers / clarifications are welcome. Thanks in advance, Siddharth. ------------------ Siddharth Toshniwal @ Hughes Software Systems, http://www.hssworld.com This message is proprietary to Hughes Software Systems Limited (HSS) and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. HSS accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus. _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
