Issue with Contact Header in 200 OK response to SIP Register by Web Socket based User Agent

[p-akshay]

Hi,

I am trying to get a web socket based client registered on sip server using Drachtio. My web socket client is based on latest SIP.js library.
While doing the registration, on node, I have observed that the registration call flow is correct (Register, 401 Unauthorized, Register and then 200 OK). I have also observed the same message sequence on client as well. However, despite that, the client is NOT changing the state to REGISTERED.

Based on the error logs of SIP.js, this is due to some issue in Contact Header received by SIP.js Client in 200 OK.

I then tried the same scenario with latest branch of FreeSWITCH server and this time the SIP.js client did successful registration (also changed the state to REGISTERED)

Here are the two contact headers:

1. Sent By Drachtio
   Contact: sip:[email protected];transport=ws;expires=30

2. Sent By FreeSWITCH
   Contact: sip:[email protected];transport=ws;expires=30

Analyzing the two strings, I think the problem is because of placement of '>' in the contact header value of drachtio. As you can see, the transport string ("transport=ws") is added after the main contact part by drachtio server where as it is part of contact string in FS.

Do you agree with this observation? or I am doing something wrong here?

Also, let me know if this can be fixed?

Thanks

[davehorton]

can you send the entire drachtio server log file for a registration?

[davehorton]

also, angle brackets did not appear in your examples

[p-akshay]

Sorry...looks like they were removed ...trying again...

Here are the two contact headers:

Sent By Drachtio
Contact: <sip:[email protected]>;transport=ws;expires=30

Sent By FreeSWITCH
Contact: <sip:[email protected];transport=ws>;expires=30

[p-akshay]

drachtio-seerver-registration-log.log

Here is the log file

...
Line 323 shows the contact header sent in 200 Ok response

line 311 shows the value of contact header passed by node module to drachtio server