Outbound Tag Not Set Due to Missing Options in Contact.toString() (Registrator.js:39)

[DarkHorse109707]

Hello Dear.
In UA.js (line 922), there is a contact object, and its toString() method requires options to enable the outbound tag.
However, I noticed that in Registrator.js (line 39), this._ua.contact.toString() is called without any options.
I need to add the "ob" parameter to the contact, and I would appreciate your advice on how best to do this.

Thank you!

[jmillan]

As the spec indicates, the 'ob' parameter in Contact is used for requests creating a dialog, and Register does not create a dialog.

https://datatracker.ietf.org/doc/rfc5626/

"ob" Parameter:  The "ob" parameter is a SIP URI parameter that has a
      different meaning depending on context.  In a Path header field
      value, it is used by the first edge proxy to indicate that a flow
      token was added to the URI.  In a Contact or Route header field
      value, it indicates that the UA would like other requests in the
      same dialog to be routed over the same flow.