Situation :
We have an application where users can submit files to the system. We
use WOFileUpload to stream the file directly to the disk.
There is at least 500 files uploaded per day (up to 1000), counting for
something between 100Mb and 150Mb of data.
Problem :
Every day, we get about 2 to 5 upload that fails with :
Error writing to output stream: [EMAIL PROTECTED]
java.io.IOException: Connection reset by peer: Amount read didn't match
content-length
And at that point, we are looking for tips on where/what to look to fix
the problem.
Here is the Stack on one such problem :
java.lang.RuntimeException: Error writing to output stream:
[EMAIL PROTECTED]
java.io.IOException: Connection reset by peer: Amount read didn't match
content-length
at
com.webobjects.appserver._private.WOFileUpload.takeValuesFromRequest(WOF
ileUpload.java:271)
at
com.webobjects.appserver._private.WODynamicGroup.takeChildrenValuesFromR
equest(WODynamicGroup.java:81)
at
com.webobjects.appserver._private.WODynamicGroup.takeValuesFromRequest(W
ODynamicGroup.java:89)
at
com.webobjects.appserver._private.WOConditional.takeValuesFromRequest(WO
Conditional.java:41)
at
com.webobjects.appserver._private.WODynamicGroup.takeChildrenValuesFromR
equest(WODynamicGroup.java:81)
...
Server configuration :
On this server, we run both apache 1.x and multiples wo applications
(multiple application and multiple instances) : WO5.2.3 / Apache 1.x /
MacOS-X 10.3.9.
My own impression :
We can reproduce the problem when 2 sessions (one Mac/FireFox, one
PC/IE) tries to upload a file (less than 1 mb each). After a couple of
successful tries (up to 3) we where able to generate the error. So
this lead me to think about a thread/race condition problem either on
the apache-wo adaptor or in the application implementation about file
upload.
Thanks for any suggestions,
- jfv
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