Bug in SIP REGISTER MEsage in UPLINK

[liorh]

Hi

I just got version 1.30 notification and I installed it.

I found few bugs in your sip implementation as its not work according to rfc3261.

 

In our system we use Proxy, Outbound proxy, sip account (phone number), Authentication username and Password.

 

In your sip2skype there are place to configure all those parameter, but your application not use it correctly.

 

In uplink I set:

Sip Number: 358753250902

Password: 02958xxxxxxxx

Server (proxy and domain): 193.65.55.4

 

In Advanced SIP Server Setting:

Use different outbound server -outbound server: 193.65.55.7 Use different username just for authentication Auth ID: liorh

 

This is the result I get with the errors:

Session Initiation Protocol

Request-Line: REGISTER sip:193.65.55.7 SIP/2.0

Method: REGISTER

Message Header

Via: SIP/2.0/UDP 223.1.1.128:5071;rport;branch=z9hG4bK123724

Max-Forwards: 20

To: <sip:liorh@193.65.55.7>

From: <sip:liorh@193.65.55.7>;tag=9500

Call-ID: 1162540844-3724-LIORAMILO@223.1.1.128

CSeq: 9 REGISTER

Contact: <sip:liorh@223.1.1.128:5071>;expires=3600;q=0.00

Authorization: Digest username="liorh",realm="193.65.55.4",nonce="b259315ca81758a4f3380702b2",uri="sip:193.65.55.7",response="60f1424e8fe8882d5fb2a2d67b964d90",opaque=""

User-Agent: Uplink Skype2Sip 1.30

Content-Length: 0

 

Bug1: TO and FROM should be To: <sip:358753250902@193.65.55.4>

Explain: you send the message to Outbound proxy but you use the domain ip in TO and FROM in header. In Header TO and FROM you use the SIP account not the Auth ID.

 

 

Bug2: CONTACT: Contact:<sip:358753250902@223.1.1.128:5071>;expires=3600;q=0.00

 

Explain: again SIP account should be used not Auth ID.

 

 

The Auth-ID is used only in- Authorization: Digest username="liorh",realm="193.65.55.4",nonce="b259315ca81758a4f3380702b2",uri="sip:193.65.55.7",response="60f1424e8fe8882d5fb2a2d67b964d90",opaque=""

 

Username="liorh" is right.

 

 

SO in short when using outbound proxy and Auth ID the Register message should be as followed:

 

TO/ From: Sip Number@ domain

Contact: sip number@ host ip

 

Auth-ID is used only in Authorization: Digest username="Auth-ID"....

 

You should construct the sip Register message like you don’t have Outbound proxy (using the domain), but send it to the Outbound proxy IP.

 

Auth-ID if different then SIP Number is used only in Authorization: Digest username. NOT in TO/FROM headers.

 

This is the right Message to send:

Session Initiation Protocol

Request-Line: REGISTER sip:193.65.55.7 SIP/2.0

Method: REGISTER

Message Header

Via: SIP/2.0/UDP 223.1.1.128:5071;rport;branch=z9hG4bK123724

Max-Forwards: 20

To: <sip:35875320902@193.65.55.4>

From: <sip:358753250902@193.65.55.4>;tag=9500

Call-ID: 1162540844-3724-LIORAMILO@223.1.1.128

CSeq: 9 REGISTER

Contact: <sip:358753250902@223.1.1.128:5071>;expires=3600;q=0.00

Authorization: Digest username="liorh",realm="193.65.55.4",nonce="b259315ca81758a4f3380702b2",uri="sip:193.65.55.7",response="60f1424e8fe8882d5fb2a2d67b964d90",opaque=""

User-Agent: Uplink Skype2Sip 1.30

Content-Length: 0

[nchBen]

Thanks for the feedback. I will pass this on to our SIP expert to have a look.

Ben

[habile]

I have this same problem - I'd like to see you guys meet the rfc requirement for handling domain in registration.

 

This seems to be giving problems with sipxtapi also - at least there is some issue with AuthDomain not matching up - I see it always coming back as WWW-Authenticate: Digest realm=\"axon@mce\"

 

I don't really understand any of this, all I know is it doesn't look right....