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#41 unexpected msg due to extra whitespace in Cseq header

v3.4
open
nobody
sipp (50)
5
2012-12-15
2008-08-15
scpage
No

SIPP cannot extract Cseq method if Cseq header contains extra whitespaces between Cseq number and method. Some Cisco products such as BTS10200 and PGW2200 insert extra white spaces between Cseq number and method.
For example:

UDP message received [329] bytes :

SIP/2.0 180 Ringing^M
Via: SIP/2.0/UDP x.x.x.x:5060;branch=z9hG4bK-4662-1-0^M
From: "ScottP"<sip:+13033010001@x.x.x.x;user=phone>;tag=1^M
To: <sip:6013028892@y.y.y.y:5060;user=phone>;tag=989824812^M
Call-ID: 1-4662@x.x.x.x^M
CSeq: 1 INVITE^M
Contact: <sip:6013028892@14.80.61.201:5060>^M
Content-Length: 0^M
^M

Fix is to ingore all white space between Cseq number and method. See attached diffs.

Discussion

  • scpage
    scpage
    2008-08-15

    Logged In: YES
    user_id=2181535
    Originator: YES

    File Added: rmspseq.txt

     
  • scpage
    scpage
    2008-08-15

    remove extra white space between Cseq number and method

     
    Attachments
  • Rob Day
    Rob Day
    2012-12-15

    • milestone: --> v3.4