| Author | Forum: PowerSNMP for .NET Topic: How to get request details in SocketException? |
| renu From: Eschborn, Germany Posts: 16 Member Since: 02/17/09 |
posted May 12, 2011 9:42 AM Hi all, I have finally switched from version 1.* to 4.3.1 and now I have the same problem as 2 years ago.... In case of a currently not available agent address I now get a System.Net.Sockets.SocketException. In version 1.*, I received a Dart.TimeoutException containing the original RequestMessage object but the SocketException of course does not have this - how can I get the request belonging to this exception? renu |
K M Drake From: Utica, NY USA Posts: 3406 Member Since: 07/14/00 |
posted May 12, 2011 1:15 PM Hi, In most cases, a ManagerSlave.GetResponse call will throw the exception, and this method requires a RequestMessage as a parameter, so it should be readily available. If this does not help, please send in a very simple code snippet that demonstrates what you are doing to support@dart.com. Thanks, -ken |
| renu From: Eschborn, Germany Posts: 16 Member Since: 02/17/09 |
posted May 13, 2011 10:01 AM Hi Ken, please see the code below: in DartManager_Error the GetMessage object is not available. I'm thinking of keeping track of request-id's sent and response-id's received and then looking for missing response-id's in case of error but as many requests might be sent practically simultaneously and asynchroneously this is not really reliable. Can you help me there? internal void GetObjectValues(MyObject myObject) { AgentRequest agentRequest = GetAgentRequest(objectRequests, false); // AgentRequest is a struct containing // - an Agent object with the ipAdress // - a GetMessage object named 'request' with request.Tag = myObject; DartManager.Start(GetValues, agentRequest); } private void GetValues(ManagerSlave slave, object agentRequestAsObject) { AgentRequest agentRequest = (AgentRequest)agentRequestAsObject; Agent agent = agentRequest.Agent; GetMessage request = agentRequests.GetMessage; slave.Socket.ReceiveTimeout = agent.Timeout; ResponseMessage response = slave.GetResponse(request, agent.Address); // we do not reach this point if an invalid ipAddress was given: // (note state object agentRequest) DartManager.Marshal(new ResponseMessage[] { response }, MarshalOriginGetValues, agentRequest); } private void DartManager_Message(object sender, MessageEventArgs e) { // response received -> normal processing ResponseMessage response = (ResponseMessage)e.Messages[0]; AgentRequest agentRequest = (AgentRequest)e.UserState; // original GetMessage: GetMessage request = agentRequest.GetMessage; // need the Tag object for further processing: MyObject myObject = (MyObject)request.Tag; // ... further processing } private void DartManager_Error(object sender, ErrorEventArgs e) { // problem here!!!! // here I would need the original GetMessage object to retrieve it's MyObject Tag object // but as I get a System.Net.Sockets.SocketException there is no information // about the GetMessage object or even the request-id! } Thanks renu |
| K M Drake From: Utica, NY USA Posts: 3406 Member Since: 07/14/00 |
posted May 13, 2011 10:32 AM Hi, You should be able to put a try...catch around your GetResponse call, and then Marshal the caught exception yourself. You could create your own Exception type which includes the Request object, if you want. Hope it helps, -ken |
| renu From: Eschborn, Germany Posts: 16 Member Since: 02/17/09 |
posted May 16, 2011 5:42 AM Hi Ken, your suggestion works fine, thank you very much! renu |
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