The example in RFC4475 is invalid syntax, not because the header component contains escaped characters, but because headers are not allowed in the request URI (ref RFC3261 table 1)
Regards, Jeroen ----- Original Message ----- From: "Attila Sipos" <[EMAIL PROTECTED]> To: "Nir Hasson" <[EMAIL PROTECTED]>; <[email protected]> Sent: Wednesday, July 19, 2006 4:59 PM Subject: Re: [Sip-implementors] SIP URI header > > I agree that the grammar seems to show that escaped characters > are OK but if you look earlier in RFC3261 you will > see this... > > Request-URI: The Request-URI is a SIP or SIPS URI as described in > Section 19.1 or a general URI (RFC 2396 [5]). It indicates > the user or service to which this request is being addressed. > The Request-URI MUST NOT contain unescaped spaces or control > characters and MUST NOT be enclosed in "<>". > > Regards, > > Attila > > Attila Sipos > http:www.vegastream.com > > >>> -----Original Message----- >>> From: [EMAIL PROTECTED] >>> [mailto:[EMAIL PROTECTED] Behalf >>> Of Nir Hasson >>> Sent: 19 July 2006 15:09 >>> To: [email protected] >>> Subject: [Sip-implementors] SIP URI header >>> >>> >>> >>> Hi all, >>> >>> In RFC4475 (SIP torture), the following Request-URI considered to be >>> illegal, because it contains escaped header (%3C, %3E): >>> >>> sip:[EMAIL PROTECTED]:example.com%3E SIP/2.0 >>> >>> But, looking at the BNF rules at RFC3261 (below) it seem >>> that header can be >>> escaped (definition of hname for instance). >>> Am I missing something? >>> >>> >>> Request-URI = SIP-URI / SIPS-URI / absoluteURI >>> SIP-URI = "sip:" [ userinfo ] hostport >>> uri-parameters [ headers ] >>> >>> headers = "?" header *( "&" header ) >>> header = hname "=" hvalue >>> hname = 1*( hnv-unreserved / unreserved / escaped ) >>> hvalue = *( hnv-unreserved / unreserved / escaped ) >>> hnv-unreserved = "[" / "]" / "/" / "?" / ":" / "+" / "$" >>> unreserved = alphanum / mark >>> escaped = "%" HEXDIG HEXDIG >>> >>> Regards, >>> Nir. >>> >>> >>> _______________________________________________ >>> 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
