/// <summary>
/// Called when the server receives an unserialized request.
/// </summary>
/// <param name="requestBytes">The serialized request.</param>
private void OnRequest(byte[] requestBytes)
{
try
{
using (var input = new EnhancedMemoryStream(requestBytes))
{
int typeCode = input.ReadInt32();
SharedMemMessage request;
SharedMemMessage response;
if (typeCode < 0)
{
request = new SharedMemErrorMessage();
}
else
{
request = messageFactory.Create(typeCode);
}
request.InternalReadFrom(input);
request.ReadFrom(input);
try
{
response = requestHandler(request);
if (response == null)
{
throw new NullReferenceException("Server request handler returned a NULL response message.");
}
}
catch (Exception e)
{
response = new SharedMemErrorMessage();
response.InternalError = string.Format("{0}: {1}", e.GetType().FullName, e.Message);
}
response.InternalRequestId = request.InternalRequestId;
response.InternalClientInbox = request.InternalClientInbox;
using (var output = new EnhancedMemoryStream(response.SerializedCapacityHint))
{
output.WriteInt32(response.TypeCode);
response.InternalWriteTo(output);
response.WriteTo(output);
// This call is synchronous but should execute very quickly (microseconds).
outbox.Send(response.InternalClientInbox, output.ToArray());
}
}
}
catch (Exception e)
{
SysLog.LogException(e);
}
}
/// <summary>
/// Called when the client receives a response.
/// </summary>
/// <param name="responseBytes">The serialized response.</param>
private void OnResponse(byte[] responseBytes)
{
try
{
using (var input = new EnhancedMemoryStream(responseBytes))
{
int typeCode = input.ReadInt32();
SharedMemMessage response;
PendingOperation operation;
if (typeCode < 0)
{
response = new SharedMemErrorMessage();
}
else
{
response = messageFactory.Create(typeCode);
}
response.InternalReadFrom(input);
response.ReadFrom(input);
lock (syncLock)
{
if (!pendingOperations.TryGetValue(response.InternalRequestId, out operation))
{
// The response received does not correlate to a pending operation
// (probably due to the client side timing it out). We'll just
// ignore it.
return;
}
}
if (response.InternalError != null)
{
operation.Tcs.TrySetException(new SharedMemException(response.InternalError));
}
else
{
operation.Tcs.TrySetResult(response);
}
}
}
catch (Exception e)
{
SysLog.LogException(e);
}
}
