Business Connector Service Exceptions URGENT

Hi,

i am getting the below exceptions in BC server :

java.net.ConnectException: Operation timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at com.wm.net.NetURLConnection.httpConnect(NetURLConnection.java:502)
at com.wm.net.NetURLConnection.connect(NetURLConnection.java:162)
at com.wm.net.HttpURLConnection.getOutputStream(HttpURLConnection.java:419)
at com.wm.net.HttpContext.getOutputStream(HttpContext.java:578)
at com.wm.net.HttpContext.getOutputStream(HttpContext.java:554)
at com.wm.net.HttpContext.post(HttpContext.java:338)
at pub.client.http(client.java:579)
at java.lang.reflect.Method.invoke(Native Method)
at com.wm.app.b2b.server.JavaService.baseInvoke(JavaService.java:281)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:709)
at com.wm.app.b2b.server.BaseService.invoke(BaseService.java:140)
at com.wm.lang.flow.FlowInvoke.invoke(FlowInvoke.java:292)
at com.wm.lang.flow.FlowState.invokeNode(FlowState.java:559)
at com.wm.lang.flow.FlowState.step(FlowState.java:430)
at com.wm.lang.flow.FlowState.invoke(FlowState.java:400)
at com.wm.app.b2b.server.FlowSvcImpl.baseInvoke(FlowSvcImpl.java:1786)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:709)
at com.wm.app.b2b.server.BaseService.invoke(BaseService.java:140)
at com.wm.lang.flow.FlowInvoke.invoke(FlowInvoke.java:292)
at com.wm.lang.flow.FlowState.invokeNode(FlowState.java:559)
at com.wm.lang.flow.FlowState.step(FlowState.java:430)
at com.wm.lang.flow.FlowState.invoke(FlowState.java:400)
at com.wm.app.b2b.server.FlowSvcImpl.baseInvoke(FlowSvcImpl.java:1786)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:709)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:466)
at com.wm.app.b2b.server.Service.doInvoke(Service.java:495)
at com.wm.app.b2b.server.Service.doInvoke(Service.java:464)
at com.wm.pkg.sap.rfc.Listener.handleRequest(Listener.java:340)
at com.sap.mw.jco.JCO$Server.dispatchRequest(JCO.java:7238)
at com.sap.mw.idoc.jco.JCoIDoc$Server.dispatchRequest(JCoIDoc.java:10268)
at com.wm.pkg.sap.rfc.Listener.dispatchRequest(Listener.java:227)
at com.sap.mw.jco.rfc.MiddlewareRFC$Server.nativeListen(Native Method)
at com.sap.mw.jco.rfc.MiddlewareRFC$Server.listen(MiddlewareRFC.java:1368)
at com.sap.mw.jco.JCO$Server.listen(JCO.java:6805)
at com.sap.mw.jco.JCO$Server.run(JCO.java:6734)
at com.wm.pkg.sap.rfc.Listener.run(Listener.java:117)
at java.lang.Thread.run(Unknown Source)

also,the error recorded in the audit log is a function module name which has been defined in BC as a function map and the sap system is calling business connector to execute a particular service which is pub:client:http.
inbound mapping has been done and when sap system calls BC to exceute this service,the above exceptions are raised.

need to know the root cause of these exceptions and how they can be rectified.

also,please clarify if the exceptions
at com.wm.net.NetURLConnection.httpConnect(NetURLConnection.java:502)
at com.wm.net.NetURLConnection.connect(NetURLConnection.java:162)