/// <summary>
/// background worker getting request from the blocking queue and send it out.
/// </summary>
private async void SendMessageWorker()
{
Debug.WriteLine("Entering OODSS Send Message Loop");
while (_isRunning && !_cancellationTokenSource.Token.IsCancellationRequested)
{
try
{
//Hold the thread here until it receives a request to be processed.
RequestQueueObject q = _requestQueue.Take(_cancellationTokenSource.Token);
// push pull
Debug.WriteLine("Trying to send the string: {0}", q.Uid);
//SendDone = new ManualResetEventSlim(false);
await CreatePacketFromMessageAndSend(q);
//SendDone.Wait(_cancellationTokenSource.Token);
Debug.WriteLine("---sent Request: {0}", q.Uid);
}
catch (OperationCanceledException e)
{
Debug.WriteLine("SendWorker: The operation was cancelled." + e.CancellationToken);
break;
}
catch (Exception e)
{
Debug.WriteLine("Caught Exception :\n " + e.StackTrace);
}
}
}
/// <summary>
/// prepare the message and send it to the websocket server
/// </summary>
/// <param name="requestObject"></param>
private async Task CreatePacketFromMessageAndSend(RequestQueueObject requestObject)
{
long uid = requestObject.Uid;
string requestString = GenerateStringFromRequest(requestObject.RequestMessage);
byte[] uidBytes = BitConverter.GetBytes(uid);
byte[] messageBytes = Encoding.UTF8.GetBytes(requestString);
byte[] outMessage = new byte[uidBytes.Length + messageBytes.Length];
Buffer.BlockCopy(uidBytes, 0, outMessage, 0, uidBytes.Length);
Buffer.BlockCopy(messageBytes, 0, outMessage, uidBytes.Length, messageBytes.Length);
await OODSSPlatformSpecifics.Get().SendMessageFromWebSocketClientAsync(_webSocketClient, outMessage);
}
/// <summary>
/// Send Request Message asynchronously and get response
/// </summary>
/// <param name="request">request message</param>
/// <returns>response message</returns>
public async Task <ResponseMessage> RequestAsync(RequestMessage request)
{
TaskCompletionSource <ResponseMessage> tcs = new TaskCompletionSource <ResponseMessage>();
long currentMessageUid = GenerateUid();
RequestQueueObject queueRequest = new RequestQueueObject(request, currentMessageUid, tcs);
_pendingRequests.Put(currentMessageUid, queueRequest);
_requestQueue.Add(queueRequest);
return(await tcs.Task);
}
/// <summary>
/// prepare the message and send it to the websocket server
/// </summary>
/// <param name="requestObject"></param>
private async Task CreatePacketFromMessageAndSend(RequestQueueObject requestObject)
{
long uid = requestObject.Uid;
string requestString = GenerateStringFromRequest(requestObject.RequestMessage);
byte[] uidBytes = BitConverter.GetBytes(uid);
byte[] messageBytes = Encoding.UTF8.GetBytes(requestString);
byte[] outMessage = new byte[uidBytes.Length + messageBytes.Length];
Buffer.BlockCopy(uidBytes, 0, outMessage, 0, uidBytes.Length);
Buffer.BlockCopy(messageBytes, 0, outMessage, uidBytes.Length, messageBytes.Length);
await OODSSPlatformSpecifics.Get().SendMessageFromWebSocketClientAsync(_webSocketClient, outMessage);
}
/// <summary>
/// Send Request Message asynchronously and get response
/// </summary>
/// <param name="request">request message</param>
/// <returns>response message</returns>
public async Task<ResponseMessage> RequestAsync(RequestMessage request)
{
TaskCompletionSource<ResponseMessage> tcs = new TaskCompletionSource<ResponseMessage>();
long currentMessageUid = GenerateUid();
RequestQueueObject queueRequest = new RequestQueueObject(request, currentMessageUid, tcs);
_pendingRequests.Put(currentMessageUid, queueRequest);
_requestQueue.Add(queueRequest);
return await tcs.Task;
}
