Bugs item #2057858, was opened at 2008-08-18 18:09
Message generated for change (Comment added) made by bagder
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>Category: http
>Group: portability problem
Status: Open
>Resolution: Later
Priority: 5
Private: No
Submitted By: Harald Schwarz (haschwar)
>Assigned to: Daniel Stenberg (bagder)
Summary: VMS-Alpha, http-upload not working

Initial Comment:
On VMS-Alpha:
When using an http-file-upload the file is not sent to the Server with the correct content-length.
Sending a file with 511 or less bytes, content-length 512 is used.
Sending a file with 513 - 1023 bytes, content-length 1024 is used.
Files with a length of a multiple of 512 Bytes show the correct content-length. Only these files work for upload.

Test-Commands on VMS-Alpha, Linux (Suse) and Windows:
curl --form myfile=@test.ras --trace-ascii testras.log http://my_web_test_server/cgi-bin/upload.pl
curl --form myfile=@test.doc --trace-ascii testdoc.log http://my_web_test_server/cgi-bin/upload.pl

File test.doc has the size 21.504 (multiple of 512)
File test.ras has the size 5.686 (not a multiple of 512).

Using test.doc everything works.
Using test.ras the Content-Length in the LOG-File differs from the content length on Linux/Windows.
The receiving program (in my testcase "upload.pl") says that I have a post-data mismatch.

VMS shows:
002c: Content-Disposition: form-data; name="myfile"; filename="test.ra
006c: s"
0070: Content-Type: application/octet-stream
0098:
=> Send data, 6144 bytes (0x1800)

Linux + Windows show:
002c: Content-Disposition: form-data; name="myfile"; filename="test.ra
006c: s"
0070: Content-Type: application/octet-stream
0098:
=> Send data, 5686 bytes (0x1636)

My workaround: I wrote a perl-program to add some bytes to the file to have a multiple of 512 Bytes. The CGI-Program (upload.pl) then reduces the filesize back to the origin.

This workaround works for all files with all sizes - but the error in curl still remains.

Now I have to say, that I'm not a C-Programmer, so I kindly ask for help.

If you need a VMS-Alpha for testing (incl. Compiler, ...), please have a look at www.polarhome.com.
On VMS-Alpha: before you can use "curl" as a program you have to define a symbol that points to CURL.EXE.
curl = "$...[...]CURL.EXE"
Then "curl" can be startet as described above.

Used CURL-Version on all systems: 7.18.2.

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>Comment By: Daniel Stenberg (bagder)
Date: 2008-08-19 23:27

Message:
Logged In: YES
user_id=1110
Originator: NO

As mentioned on the mailing list, we depend on people who have VMS and a
compiler to debug this problem and work on a fix. Since nobody has stepped
up yet, I'll most likely add this bug to the KNOWN_BUG list within soon and
close this report.

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You can respond by visiting:
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Received on 2008-08-19