Ignore that, my test code below is somehow flawed.
Even if I write a file containing 8192 null characters, can't reproduce it.
This is with Python 2.3, Apache 2.2.4 and MacOS X 10.4.11.
And then something clicks. You are using Apache 1.3. For both Apache
1.3 and Windows Apache 2.X, use of sendfile techniques isn't used and
so any problem would lie in mod_wsgi somewhere. I'll need to disable
the sendfile code manually and then see what happens.
Graham
2008/8/22 Graham Dumpleton <[EMAIL PROTECTED]>:
> 2008/8/22 Simon J. Oliver <[EMAIL PROTECTED]>:
>> Thanks Graham!
>>
>> To save you the bother, I'm attaching said text file. This is the one
>> with it aligned, so it breaks the download.
>
> Very odd. I have no problem with your file, but can trigger problems
> in other ways. Just the following is sufficient:
>
> def application(environ, start_response):
> status = '200 OK'
>
> response_headers = [('Content-Type', 'text/plain'),]
> start_response(status, response_headers)
>
> path = os.path.join('/tmp/null.txt')
> fd = open(path, 'w')
> #fd.write(8192*'\0')
> fd.write('\0')
> fd.seek(0)
> return environ['wsgi.file_wrapper'](fd)
>
> Doing HEAD using telnet get:
>
> $ telnet localhost 8224Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
> HEAD /wsgi/scripts/file.py HTTP/1.0
>
> HTTP/1.1 200 OK
> Date: Fri, 22 Aug 2008 00:57:38 GMT
> Server: Apache/2.2.4 (Unix) mod_wsgi/3.0-TRUNK Python/2.3.5
> Content-Length: 1
> Connection: close
> Content-Type: text/plain
>
> Connection closed by foreign host.
>
> If use curl it just hangs waiting for data.
>
> Don't even need 4k of data. The first character of any 4k block,
> including the first, being a null is possibly enough.
>
> I'll have to check the code path which is used, but the whole point of
> wsgi.file_wrapper is that it passes control for sending file off to
> Apache functions to do. So first impression would be that I can't see
> how this can be an issue in mod_wsgi and that it would have to be in
> Apache.
>
> Anyway, time for some digging.
>
> Graham
>
>> Cheers,
>>
>> Simon
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