Wireshark-users: [Wireshark-users] Problem with decoding TCP payload

From: Pierluigi Felici <pierluigicdc@xxxxxxxx>
Date: Tue, 18 Dec 2007 09:25:24 +0100 (CET)
Hi to everybody,
 
I've a problem regarding an HTTP response content of a HTTP request.
 
The request made by the clietn is:
 
GET http://www.google.it/gwt/i?i=fg/040416E7_4E0E8C98_DBCD20F1-172-jpeg HTTP/1.1
Host: www.google.it
Accept: text/_javascript_, text/ecmascript, application/x-_javascript_, */*
Accept-Charset: iso-8859-1, utf-8, iso-10646-ucs-2; q=0.6
Accept-Encoding: gzip,deflate,identity;q=0.9
Accept-Language: it
User-Agent: NokiaN70-1/5.0638.3.0.1 Series60/2.8 Profile/MIDP-2.0 Configuration/CLDC-1.1
x-wap-profile: "http://nds1.nds.nokia.com/uaprof/NN70-1r100.xml"
 
The response is:
 
HTTP/1.1 200 OK
Content-Type: image/jpeg
Cache-control: private
Date: Fri, 14 Dec 2007 10:32:59 GMT
Server: GFE/1.3
Content-Length: 4992
Content-Encoding: deflate
Warning: 214  MSP-PROXY TransformationApplied
 
As i can see in the the header response is that the content-encoding is deflate. I've tried to decode the payload of the response with deflate algorithm (zlib) but it fails.
 
I think that the response body is not compressed by deflate algorithm.
 
I saw that wireshark has decoded the response payload, so my questions are:
- wich algorithm is used by wireshark to decode this kind of data?
- what does "Warning: 214  MSP-PROXY TransformationApplied" means, it has some effects on the response payload?
 
Thanks.
 
 
 
 
 



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