[sr-dev] [tracker] Task opened: Error parsing Via parameter with space before semicolon

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Iñaki Baz Castillo (ibc) 

Attached to Project - sip-router
Summary - Error parsing Via parameter with space before semicolon
Task Type - Bug Report
Category - Core
Status - Assigned
Assigned To - Andrei Pelinescu-Onciul
Operating System - All
Severity - Very Low
Priority - Normal
Reported Version - Development
Due in Version - Undecided
Due Date - Undecided
Details - The following valid Via causes a parsing error:

    Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bK1aaaaa;rport;param1 ;param2<CRLF>

It occurs due to the space before ";param2".
If param2 has value (param2=abc or param2 = abc) the error also occurs.

According to RFC 3261 BNF the above Via is 100% valid as header parameters separator is SEMI which is defined as:

    SEMI    =  SWS ";" SWS
    SWS    =  [LWS]
    LWS    =  [*WSP CRLF] 1*WSP
    WSP    = SP | HTAB;

More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=127

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