[Sip-implementors] Query regarding “Geolocation- Error” header syntex

Fri, 08 Feb 2008 02:16:46 -0800 

  
Hi,

I have a doubt regarding “Geolocation-Error” header syntax provided in 
“draft-ietf-sip-location-conveyance-09.txt”.
I am referring this draft to implementing location based service in PCSCF. As 
per this draft, syntax of “Geolocation-Error” header is like below:

Geolocation-Error        = "Geolocation-Error" HCOLON 
                               [locationErrorValue
                               *(COMMA locationErrorValue)]
   locationErrorValue       = location-error-code *(SEMI 
                               location-error-params)
   location-error-code      = 1*3DIGIT
   location-error-params    = location-error-node-id
                              / DQOUTE location-error-host-id DQOUTE
                              / CAtype *(SEMI CAtype) 
                              / DQOUTE location-error-code-text DQOUTE
                              / generic-param ; from RFC3261
   location-error-node-id   = "node" EQUAL hostname; from RFC3261
   location-error-host-id   = "inserter" EQUAL hostname ; from RFC3261
   CAtype                   = "CAtype" EQUAL civic-code *SEMI "CAtype"
                                EQUAL civic-code)
   location-error-code-text = "code" EQUAL quoted-string ; from RFC3261
   civic-code               = IANA registered CAtypes; from 

But in an example it has given like this.

Geolocation-Error: 106; "node=bob.example.com"; 
                           "inserter=alice.example.com"; 
                           CAtype=A3; CAtype=STS;
                           code="incomplete location supplied"

These are the conflicts between syntax and example:

1>As per example, there should be DQOUTE for “location-error-node-id”, but in 
syntax it is missing.
2>As per syntax, there should be DQOUTE for “location-error-code-text”. But in 
example, it does not have DQOUTE, like how it is present for “nod” and 
“inserter” parameters. It is just having "code" EQUAL quoted-string.

I feel, syntax for “Geolocation-Error” header specified in this draft is not 
correct. I think syntax for both “nod” and “inserter” parameters should be same 
and DQOUTE should not be present for “location-error-code-text”. I am providing 
an example, how it can be:

Geolocation-Error: 106; node=bob.example.com; 
                        inserter=alice.example.com; 
                        CAtype=A3; CAtype=STS;
                        code="incomplete location supplied"

Please let me know your suggestions.

Thanks
Debendra
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