[reSIProcate] WebSocket cookie support

[Catalin Constantin Usurelu <catalin.usurelu5@xxxxxxxxx>]

Hi everyone,

I'm working on adding cookie support for WebSocket in reSIProcate but I'm not sure how to proceed, so I would like some suggestions/feedback, if possible.

Basically I would like to use the existing code and logic used to implement the SIP header support in resip/stack (that's where the cookie code will be too).

The thing is, from reading the RFC's, the cookie header is like this:
Cookie: name1=value1; name2=value2

And you can theoretically have many headers (but in practice it's never done).

The problem is I can't use the existing code to parse the ';' symbol, it only knows of using ',' to split
multiple field-values.

I could add some code to also treat the cookie case but it's not really "sip grammar" (neither 
is the cookie, but I think it's fine if it uses the existing code), so I'm not sure if it's ok or not.

Or I could just use the Cookie header as StringCategory type, and make a separate parser 
just for cookies but it won't really adhere to the code style/pattern.

Kind regards,

Catalin