Aight, I've gotten some replies to this problem but a solution has still not arrived. A certain part of my script needs to upload a file to a website via form based upload. Herer is the relavent Perl code: 
my $req = POST ('http://www.environet.gov.on.ca/dwws-app/DWWSApp?cmd=U
+ploadSubmPage.uploadSubm',
                Content_Type => 'form-data',
                Content      => [
                                works_id => '210000586', 
                                lab_id   => '48', 
                                filename => [$FileName]               
+                 
                                ]
                );

[download]
There doesn't seem to be anything immediately wrong with this, and several people have confirmed that the header it generates looks ok. Yet with this generated header, the website spits back an error. The header: 
POST http://www.environet.gov.on.ca/dwws-app/DWWSApp?cmd=UploadSubmPag
+e.uploadSubm
Content-Length: 11073
Content-Type: multipart/form-data; boundary=xYzZY

--xYzZY

Content-Disposition: form-data; name="works_id"



210000586

--xYzZY

Content-Disposition: form-data; name="lab_id"



48

--xYzZY

Content-Disposition: form-data; name="filename"; filename="210000586-2
+10001130.txt"

Content-Length: 10760

Content-Type: text/plain

[download]
Produces this error response: 
Malformed line after disposition: Content-Length: 10760

[download]
Perhaps there is something missing from the 'Content-Type: text/plain' line? It would be interesting to see what headers browsers like IE and Mozilla generate, since they seem to have no problem uploading these files in this manner. Got any bright ideas guys?

-Thanks, Tim

In reply to Still Unsolved HTTP Headers Problem by gr0f

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