Hello,
I have a reason to believe, that there might be a bug in the file upload
handler, perhaps related to partial uploads / resuming uploads.
Recently I got a few reports about workunits thrown out randomly by my
validator. Yesterday I started tracking the problem and I quickly found out,
that something is wrong with the uploaded files. Every now and then, the file
is "received" with it's contents multiplied inside, usually it looks like the
same content is appended 2 to 6 times at the end of the file.
At first I thought that these files come from faulty app, until I checked
xml_doc_out for affected results. It clearly says, that the file uploaded had a
certain length, while the same file in the upload dir is 2-6 times bigger.
<file_info>
<name>pldrv59-1_0_13699516_570_1_0</name>
<nbytes>104.000000</nbytes>
<max_nbytes>1000.000000</max_nbytes>
<md5_cksum>b5f823edbc321d27020d0a73745b40a4</md5_cksum>
<url>http://www.enigmaathome.net/file_upload_handler</url>
</file_info>
So then I checked the FUH's log just to find something like that:
2011-02-15 18:25:56.7653 [PID=22275] [debug] handle_request:
<data_server_request>
2011-02-15 18:25:56.7654 [PID=22275] [debug] handle_request:
<core_client_major_version>6</core_client_major_version>
2011-02-15 18:25:56.7654 [PID=22275] [debug] handle_request:
<core_client_minor_version>10</core_client_minor_version>
2011-02-15 18:25:56.7654 [PID=22275] [debug] handle_request:
<core_client_release>58</core_client_release>
2011-02-15 18:25:56.7654 [PID=22275] [debug] handle_request: <file_upload>
2011-02-15 18:25:56.7657 [PID=22275] Starting upload of
pldrv59-1_0_13699516_570_1_0 from 69.12.216.209 [offset=0, nbytes=104]
2011-02-15 18:25:56.7659 [PID=22275] Ended upload of
pldrv59-1_0_13699516_570_1_0 from 69.12.216.209; retval 0
2011-02-15 18:25:56.7659 [PID=22275] [debug] elapsed time 0.000755 seconds
and a dozen of megabytes below, again:
2011-02-15 18:32:03.5711 [PID=24070] [debug] handle_request:
<data_server_request>
2011-02-15 18:32:03.5711 [PID=24070] [debug] handle_request:
<core_client_major_version>6</core_client_major_version>
2011-02-15 18:32:03.5711 [PID=24070] [debug] handle_request:
<core_client_minor_version>10</core_client_minor_version>
2011-02-15 18:32:03.5711 [PID=24070] [debug] handle_request:
<core_client_release>58</core_client_release>
2011-02-15 18:32:03.5712 [PID=24070] [debug] handle_request: <file_upload>
2011-02-15 18:32:03.5715 [PID=24070] Starting upload of
pldrv59-1_0_13699516_570_1_0 from 69.12.216.209 [offset=0, nbytes=104]
2011-02-15 18:32:03.5715 [PID=24070] [CRITICAL] file
pldrv59-1_0_13699516_570_1_0 length on disk 104 bytes; host upload starting at
0 bytes.
2011-02-15 18:32:03.5715 [PID=24070] Ended upload of
pldrv59-1_0_13699516_570_1_0 from 69.12.216.209; retval 0
2011-02-15 18:32:03.5716 [PID=24070] [debug] elapsed time 0.000622 seconds
Why was the file uploaded again and attached to the end of already existing
file ? Is it a bug ? I'm running revision 22566. Dnetc.net's project admin also
confirmed the same problem on his server, v22488.
The problem is not related to any specific client version.
TJM
http://www.enigmaathome.net
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