Hi Lorenzo,

Thanks for pointing this out - I will fix the problem in the next
version.  The use of the uri parameter had previously not been well
defined.  Section 20.4 of bis-06 now clearly spells out the parameter
usage, including uri.

Thanks,
Alan Johnston
WorldCom
sip:[EMAIL PROTECTED]

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED]] On Behalf Of 
> [EMAIL PROTECTED]
> Sent: Wednesday, January 16, 2002 3:02 PM
> To: [EMAIL PROTECTED]
> Subject: [Sip-implementors] Doubt in 
> draft-ietf-sip-call-flows-05: Example 3.1.3
> 
> 
> 
> 3.1.3 SIP to SIP with Multi Proxy Authentication
> In this example UserA (sip:[EMAIL PROTECTED]) calls UserB 
> (sip:[EMAIL PROTECTED]).
> 
> Take a look to the following messages (F2 and F4):
> 
> F2)
>    SIP/2.0 407 Proxy Authorization Required
>    Via: SIP/2.0/UDP here.com:5060
>    From: BigGuy <sip:[EMAIL PROTECTED]>
>    To: LittleGuy <sip:[EMAIL PROTECTED]>
>    Call-ID: [EMAIL PROTECTED]
>    CSeq: 1 INVITE
>    Proxy-Authenticate: Digest realm="WorldCom SIP",
>     domain="sip:ss1.wcom.com", nonce="wf84f1cczx41ae6cbeaea9ce88d359",
>     opaque="", stale=FALSE, algorithm=MD5
>    Content-Length: 0
> 
> --------------------------------------------------------------------
> 
> F4)
>    INVITE sip:[EMAIL PROTECTED] SIP/2.0
>    Via: SIP/2.0/UDP here.com:5060
>    From: BigGuy <sip:[EMAIL PROTECTED]>
>    To: LittleGuy <sip:[EMAIL PROTECTED]>
>    Call-ID: [EMAIL PROTECTED]
>    CSeq: 2 INVITE
>    Contact: <sip:[EMAIL PROTECTED]>
>    Proxy-Authorization:Digest username="UserA", realm="WorldCom SIP",
>     nonce="wf84f1ceczx41ae6cbe5aea9c8e88d359", opaque="",
>     uri="sip:ss1.wcom.com", response="42ce3cef44b22f50c6a6071bc8"
>    Content-Type: application/sdp
>    Content-Length: 147
> 
>    v=0
>    o=UserA 2890844526 2890844526 IN IP4 here.com
>    s=Session SDP
>    c=IN IP4 100.101.102.103
>    t=0 0
>    m=audio 49172 RTP/AVP 0
>    a=rtpmap:0 PCMU/8000
> 
> In the "Proxy-Authenticate" header there is the "domain" parameter.
>         domain="sip:ss1.wcom.com"
> 
> In the "Proxy-Authorization" header the "uri" parameter is 
> setted to the domain parameter value.
>     uri="sip:ss1.wcom.com"
> 
> Why?
> I'm expected uri was equals to:
>     uri="sip:[EMAIL PROTECTED]"
> 
> In RFC 2617:
> 
> digest-uri
>       The URI from Request-URI of the Request-Line; duplicated here
>       because proxies are allowed to change the Request-Line 
> in transit.
> 
> Thanks!
> Lorenzo
> 
> 
> ___________________________________________
> 
> Lorenzo Boffelli
> STRE Engineer
> 
> Allied Telesis K.K.
> Head Office / 4F TOC Bldg, 7-22-17 Nishi-Gotanda,
> Shinagawa-ku, Tokyo Japan, 141-8635
> European R&D Center
> Piazza Tirana, 24/4 b   Phone: +39 02 41411201
> 20147 Milano        Fax:     +39 02 41411260
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> Email: [EMAIL PROTECTED]
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