RFC3261 section 8.3: "The "expires" parameter of a Contact header field value indicates how long the URI is valid. The value of the parameter is a number indicating seconds. If this parameter is not provided, the value of the Expires header field determines how long the URI is valid. Malformed values SHOULD be treated as equivalent to 3600.
This provides a modest level of backwards compatibility with RFC 2543, which allowed absolute times in this header field. If an absolute time is received, it will be treated as malformed, and then default to 3600." > -----Original Message----- <snip> > > > Neel Balasubramanian wrote: > > > [Neel] > > Malformed values typically be treated as 3600 and not as 0. > > First, we generally don't specify what is done for invalid cases. > (If we did, in effect we would be extending the spec to that case and so > it would be valid.) > > But IMO it makes sense in cases like this to treat it as if the header > had not been present. So you would get the *default* value. > In some cases that is 3600. > > Paul _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
