Hi, some headers as Via, Route, Record-Route can appear multiple times since 
they contain comma-separated values:

-----------
Via:  via1, via2,
  via3
Via: via4
Via: via5,
  via6
------------

 7.3.1 Header Field Format
 
   Multiple header field rows with the same field-name MAY be present in
   a message if and only if the entire field-value for that header field
   is defined as a comma-separated list


But what about a custom header? can it be splitted in various headers with 
same name field?

I just find in RFC 3261:

 7.3.1 Header Field Format
   Implementations MUST be able to process multiple header field rows
   with the same name in any combination of the single-value-per-line or
   comma-separated value forms.

But I'm not sure about custom headers. Thanks for any explanation.


-- 
Iñaki Baz Castillo
[EMAIL PROTECTED]

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