I'm waiting for a better solution ...
Maybe should a sniffer pcap help in diagnosys?
Michele Masè

On Tue, Jul 31, 2012 at 5:28 PM, André Warnier <a...@ice-sa.com> wrote:

> Michele Mase' wrote:
>
>> The "only" way to reproduce it is (for me) without the plugin; i'm sorry
>> ...
>> I haven't seen what happens using a sniffer, but the X in the apache's log
>> file tells me that the client is aborting the session, I suspect a session
>> reset could happen.
>> And finally, following your suggestion, a F5 helped me:
>>
>> 200Ok session:
>> GET /test.pdf HTTP/1.1
>> Accept: */*
>> Accept-Encoding: gzip, deflate
>> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET
>> CLR 2.0.50727)
>> Host: 
>> installazioni-el6b.insiel.it:**8080<http://installazioni-el6b.insiel.it:8080>
>> Connection: Keep-Alive
>> Pragma: no-cache
>>
>> HTTP/1.1 200 OK
>> Server: Apache-Coyote/1.1
>> Accept-Ranges: bytes
>> ETag: W/"3447866-1343391729000"
>> Last-Modified: Fri, 27 Jul 2012 12:22:09 GMT
>> Content-Type: application/pdf
>> Content-Length: 3447866
>> Date: Tue, 31 Jul 2012 12:32:05 GMT
>>
>> 206KO:
>> GET /test.pdf HTTP/1.1
>> Accept: */*
>> Range: bytes=3446021-3447865, 475136-1792507
>> Accept-Encoding: gzip, deflate
>> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET
>> CLR 2.0.50727)
>> Host: 
>> installazioni-el6b.insiel.it:**8080<http://installazioni-el6b.insiel.it:8080>
>> Connection: Keep-Alive
>> Pragma: no-cache
>>
>> HTTP/1.1 206 Partial Content
>> Server: Apache-Coyote/1.1
>> Accept-Ranges: bytes
>> ETag: W/"3447866-1343391729000"
>> Last-Modified: Fri, 27 Jul 2012 12:22:09 GMT
>> Content-Type: multipart/byteranges;boundary=**CATALINA_MIME_BOUNDARY
>> Date: Tue, 31 Jul 2012 12:32:20 GMT
>> Content-Length: 1319458
>>
>>
> The above appears (to me) to be two correct request/response pairs.
> Even the 206, which is a normal response to the "Range" request as per
> here : 
> http://www.w3.org/Protocols/**rfc2616/rfc2616-sec10.html<http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html>
>
> We still don't know if/why the browser/client resets the connection, but
> it is not visible in the above exchange.
> Maybe inspecting the response body to the second request would provide a
> clue.
>
> It is also a bit of a mystery to me why the same browser would sometimes
> request the same resource in one go, and sometimes as byteranges.  But I
> don't know exactly how this part is supposed to work.
> Maybe it depends on which part of the PDF the user decides to display ?
>
>
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