Hi,
We have recently migrated from WebObjects 5.2.3 (Apache 1.3) to 5.4
(Apache 2.2) and have run into WebObjects 500 errors.
I started getting 'Amount Read didn’t match content-length' errors
intermittently in web instance log, and this results in a 'Page Can
not be displayed' error on the web browser. This happens randomly on
various pages when a link/submit/cancel buttons are clicked...and can
be recreated (although not in same number of steps) by going to those
pages and clicking on various links.
After going through some topics that talk about similar issues I
changed the configuration settings as follows.
1. Retries = 4 (I've tried values like 10,20 but does not seems to
make much of a difference)
2. Connection pool size = 0
3. Send, recv, conn timeout = 100,300, 100 (started out with 30,60,30
and gradually increased it as it seemed to have reduced the frequency
of the error)
4. Send/Recv buffers = 120000/120000 (again started with 64000 but
increased it as it reduced the frequency of the error)
5. Dormant = 0
6. Load balancing scheme = Load Average (Have tried all options
including 'Default')
7. Life Beat Interval = 30
I've even tried the code fixes (related to handling malformed cookies)
suggested by Chuck Hill/Ricardo.
The pages are not large in size and do not use WOUpload. I have even
got the errors when I wait a few seconds after the page loads (and
sleep messages are logged in the web instance log) and then click on
any links/buttons.
Please let me know if you have any suggestions/solutions.
Environment:
WebObjects 5.4
JDK : 1.5
OS: Solaris 10
Web server: Apache 2.2.11
WebObjects HTTP adaptor version: 4.5.1
I have 5 instances configured but am only running instance 2.
Web instance Log:
------------------------------------
[2009-3-18 15:2:36 CDT] <WorkerThread0>
<com.webobjects.appserver._private.WOComponentRequestHandler>:
Exception occurred while handling request:
com.webobjects.foundation.NSForwardException [java.io.IOException]
Connection reset by peer: Amount read didn't match
content-length:java.io.IOException: Connection reset by peer: Amount
read didn't match content-length
[2009-3-18 15:2:36 CDT] <WorkerThread0>
com.webobjects.foundation.NSForwardException [java.io.IOException]
Connection reset by peer: Amount read didn't match
content-length:java.io.IOException: Connection reset by peer: Amount
read didn't match content-length
at
com.webobjects.appserver._private.WOInputStreamData._extractBytesFromInputStream(WOInputStreamData.java:128)
at
com.webobjects.appserver._private.WOInputStreamData.bytesNoCopy(WOInputStreamData.java:147)
at com.webobjects.foundation.NSData._bytesNoCopy(NSData.java:506)
at com.webobjects.appserver.WOMessage.contentString(WOMessage.java:735)
at
com.webobjects.appserver.WORequest.getFormValuesFromURLEncoding(WORequest.java:1252)
at com.webobjects.appserver.WORequest.formValues(WORequest.java:1343)
at
com.webobjects.appserver.WORequest._hasFormValues(WORequest.java:1182)
at
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedPage(WOComponentRequestHandler.java:198)
at
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
at
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332)
at
com.webobjects.appserver._private.WOComponentRequestHandler._handleRequest(WOComponentRequestHandler.java:369)
at
com.webobjects.appserver._private.WOComponentRequestHandler.handleRequest(WOComponentRequestHandler.java:442)
at
com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1678)
at
com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144)
at
com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.IOException: Connection reset by peer: Amount read
didn't match content-length
at
com.webobjects.appserver._private.WONoCopyPushbackInputStream.read(WONoCopyPushbackInputStream.java:174)
at
com.webobjects.appserver._private.WOInputStreamData._extractBytesFromInputStream(WOInputStreamData.java:114)
... 15 more
------------------------------------
WebObjects.log contents:
------------------------------------
Info: Sending request to instance number 2, port 2002
Info: Trying to contact Web:2 on (2002)
Info: attempting to connect to myservername on port 2002
Info: Web:2 on (2002) connected [pooled: No]
Error: sendBuffers(): send error: Invalid argument
Error: error sending request
Error: Failed to send request
Info: Marking instance 2 dead
Warn: Marking myservername:2 unresponsive
Debug: connectionAttempts = 1, retries = 4
Info: Reading configuration from
http://myservername:1085/WebObjects/wotaskd.woa/wa/woconfig
Info: attempting to connect to myservername on port 1085
Info: Preparing to read config for host: myservername
Info: New response: HTTP/1.0 200 Apple WebObjects
Info: loadaverage: could not select instance
Info: tr_selectInstance(): scheduler failed to select instance.
Info: No new instance located for failover
Error: Request handling error: No instance available
Debug: <WebObjects Apache Module> new translate: /woapp/WebObjects/Web
Info: <WebObjects Apache Module> new request: /woapp/WebObjects/Web
Debug: App Name: Web (3)
Info: V4 URL: /woapp/WebObjects/Web
Info: loadaverage: selected instance at index 1
Info: Selected new app instance at index 1
Debug: Composed URL to '/woapp/WebObjects/Web.woa/2'
Info: New request is GET /woapp/WebObjects/Web.woa/2 HTTP/1.1
Info: Sending request to instance number 2, port 2002
Info: Trying to contact Web:2 on (2002)
Info: attempting to connect to myservername on port 2002
Info: Web:2 on (2002) connected [pooled: No]
Info: Request GET /woapp/WebObjects/Web.woa/2 HTTP/1.1
sent, awaiting response
Debug: ac_readConfiguration(): skipped reading config
Info: New response: HTTP/1.1 200 Apple WebObjects
Info: Web 2 load avg = 6
Info: received ->200 Apple
------------------------------------
Thanks for any help you can give.
Thanks and Regards,
Mukesh.
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