Re: content-disposition not recognized

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Micah Johnson wrote:
>>>and the script prints headers like this:
>>>
>>>    print "Content-type: text/plain\n";
>>>    print "Content-Disposition: attachment;
>>>filename=results.xml\n\n";
>>>
>>>The resulting file reports a server error 500,
>>>premature end of script headers and the
>>>content-disposition line is displayed, so it looks
>>>like it is not being treated as a header.
>>
>>Try to add:
>>
>>   local $| = 0;
>>
>>before sending headers, or send the header at once:
>>
>>print q[Content-type: text/plain\n] .
>>q[Content-Disposition:
>>attachment;filename=results.xml\n\n].
> 
> 
> Thanks!
> The local $| = 0 trick works.  Would you mind
> explaining what is happening?  FYI, putting the
> headers on one print doesn't seem to fix it.

As soon as you send some content to the client, Apache sends the headers 
immediately (since there is no send_http_header() in Apache 2.0). So when 
you do:

print q[Content-type: text/plain\n];

Apache sends httpd headers right away, before it sees extra headers.

By making the output buffered $! (which is the case by default) you delay 
sending the data out, till the 8K buffer is filled (or the request is 
completed). But it's probably a better practice to send the header at once 
as I've suggested, rather than relying on the buffering feature.

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