WOWebserviceClient: invalid argument

Hi, does someone have a solution for this problem ?


I have a recurring problem in WO 5.4 with WOWebserviceClient.invoke:


sometimes we get an exception on WOWebServiceClient.invoke

			private static WOWebServiceClient caller = ...;
			

			Object [] oo = new Object [] {"aa","bb"};
			Object result = caller.invoke("Service","getUserForID", oo);

and 5 seconds later, the invoke can work again, with exact the same  
arguments.


Our WO applications is multithreaded and a lot of threads will use the  
caller object to access differernt functions of a webservice (a  
WebObjects webservice)

Can it be that WOWebserviceClient is not thread safe and that  
accessing it simultaneously causes this error ?


The reason I made caller static is to save time to not have to  
instantiate a new WOWebServiceClient object each time I want to make a  
service call.


Is there any source code available of WOWebServiceClient.java ?


Thanks for your collaboration !



Kristof


16/07/2009 15:32:54:106 [ERROR] <WorkerThread9> Exception(Message:  
Exception trying to invoke operation: getUserForID,  
Cause:java.net.SocketException: Invalid argument)
com.webobjects.foundation.NSForwardException  
[org.apache.axis.AxisFault] ; nested exception is:
	java.net.SocketException: Invalid argument:Exception trying to invoke  
operation: getUserForID
	at  
com 
.webobjects 
.webservices.client.WOWebServiceClient.invoke(WOWebServiceClient.java: 
491)
	at  
be 
.nss 
.correctvit.service.PortalClient.getUserInfoForID(PortalClient.java:182)
	at  
be 
.nss 
.correctvit 
.database.SQLGenerator.selectCorrectVitDocuments(SQLGenerator.java:455)
	at  
be 
.nss 
.correctvit 
.service 
.WOSOAPCorrectvitFunctions 
.getCorrectVitDocuments(WOSOAPCorrectvitFunctions.java:177)
	at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
	at  
sun 
.reflect 
.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 
25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at  
org 
.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java: 
397)
	at  
org 
.apache 
.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186)
	at  
org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java: 
323)
	at  
org 
.apache 
.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
	at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
	at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
	at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java: 
454)
	at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
	at  
com 
.webobjects 
.appserver._private.WOWebService.performActionNamed(WOWebService.java: 
437)
	at  
com 
.webobjects 
.appserver 
._private 
.WOActionRequestHandler._handleRequest(WOActionRequestHandler.java:259)
	at  
com 
.webobjects 
.appserver 
._private 
.WOActionRequestHandler.handleRequest(WOActionRequestHandler.java:161)
	at  
com 
.webobjects 
.appserver 
._private 
.WOWebServiceRequestHandler 
.handleRequest(WOWebServiceRequestHandler.java:109)
	at  
com 
.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java: 
1687)
	at be.nss.correctvit.Application.dispatchRequest(Application.java:792)
	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:613)
Caused by: java.net.SocketException: Invalid argument
	at org.apache.axis.AxisFault.makeFault(AxisFault.java:101)
	at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java: 
154)
	at  
org 
.apache 
.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
	at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
	at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
	at org.apache.axis.client.AxisClient.invoke(AxisClient.java:165)
	at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
	at org.apache.axis.client.Call.invoke(Call.java:2767)
	at org.apache.axis.client.Call.invoke(Call.java:2443)
	at org.apache.axis.client.Call.invoke(Call.java:2366)
	at org.apache.axis.client.Call.invoke(Call.java:1812)
	at  
com 
.webobjects 
.webservices.client.WOWebServiceClient.invoke(WOWebServiceClient.java: 
484)
	... 23 more
Caused by: java.net.SocketException: Invalid argument
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:129)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
	at  
org 
.apache 
.axis.transport.http.HTTPSender.readHeadersFromSocket(HTTPSender.java: 
583)
	at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java: 
143)
	... 33 more

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