// Send a request to the tasking server
public void SendRequest(MsgMeas.TaskOperationType operation)
{
MsgMeas.TaskRequest request = null;
switch (operation)
{
case MsgMeas.TaskOperationType.Submit: // Create a new task for "myproc"
request = MsgMeas.TaskRequest.CreateSubmitRequest(MySupportedProcedure);
break;
case MsgMeas.TaskOperationType.Update: // Update an existing task
request = MsgMeas.TaskRequest.CreateUpdateRequest(MySupportedProcedure, m_currentTaskId);
break;
case MsgMeas.TaskOperationType.GetStatus: // Get the status of an existing task
request = MsgMeas.TaskRequest.CreateGetStatusRequest(m_currentTaskId);
break;
case MsgMeas.TaskOperationType.Cancel: // Cancel a task
request = MsgMeas.TaskRequest.CreateCancelRequest(m_currentTaskId);
break;
default:
throw new ArgumentException("Unexpected operation " + operation.ToString());
}
// Sending the request
SendRequest(request.ToXmlBytes());
// Waiting for a response
var responseXml = WaitForResponse();
MsgMeas.TaskResponse response;
try
{
response = new MsgMeas.TaskResponse(responseXml);
}
catch (MsgMeas.Neutral.InvalidMessageException e)
{
throw new InvalidOperationException("Failed to read response: " + e.Message);
}
if (response.RequestResult != MsgMeas.RequestResultType.Ok)
{
// Request failed!
throw new InvalidOperationException("Unexpected request result " + response.RequestResult.ToString());
}
// Processing the request
m_currentTaskId = response.StatusReports[0].TaskId; // Task ID is assigned by the server
// Do whatever you want with the response...
}
// Serve tasking clients
public void Serve()
{
while (true)
{
var xmlBytes = ReceiveFromNetwork();
MsgMeas.TaskRequest request;
try
{
request = new MsgMeas.TaskRequest(xmlBytes);
}
catch (MsgMeas.Neutral.InvalidMessageException e)
{
Console.WriteLine("Failed to read request: " + e.Message);
continue;
}
MsgMeas.TaskResponse response = null;
try
{
if (request.Operation != MsgMeas.TaskOperationType.Submit &&
request.TaskId != CurrentTaskId)
{
// Unknown task ID
response = CreateFailureResponse(request.Operation);
}
else if ((request.Operation == MsgMeas.TaskOperationType.Submit ||
request.Operation == MsgMeas.TaskOperationType.Update) &&
request.ProcedureId != MySupportedProcedure)
{
// Cannot start a task or update an existing task, because the procedure is unknown.
response = CreateFailureResponse(request.Operation);
}
else
{
response = CreateOkResponse(request.Operation);
}
}
catch (InvalidOperationException e)
{
Console.WriteLine("Failed to process request: " + e.Message);
continue;
}
SendToNetwork(response.ToXmlBytes());
}
}
