private async Task Receive()
{
try {
while (WebSocket.State == WebSocketState.Open)
{
var buffer = new byte[BufferSize];
var result = await WebSocket.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
if (result.MessageType == WebSocketMessageType.Close)
{
Disconnect();
}
else
{
var lstMessage = new List <byte>(buffer);
while (!result.EndOfMessage && result.CloseStatus == WebSocketCloseStatus.Empty)
{
result = await WebSocket.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
lstMessage.AddRange(buffer);
}
Rx?.Invoke(this, lstMessage.ToArray());
}
}
} catch (TaskCanceledException) {
} catch (OperationCanceledException) {
//ignore
} catch (Exception ex) {
Log.Info($"Error receiving data: {ex.Message}, closing connection");
Disconnect();
}
}
/// <summary>
/// ToDo:
/// Test performance and ease of use from how it's done here:
/// https://stackoverflow.com/a/41926694/2106514
///
/// </summary>
public async void Start()
{
try {
if (_objCancelationSource != null)
{
_objCancelationSource.Dispose();
}
_objCancelationSource = new CancellationTokenSource();
_objCancelationToken = _objCancelationSource.Token;
while (!_objCancelationToken.IsCancellationRequested)
{
var buffer = new byte[_intBufferSize];
var result = await _objClient.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
if (result.MessageType == WebSocketMessageType.Close)
{
throw new Exception("Client Disconnected");
}
else
{
var arrMessage = new byte[result.Count];
Array.Copy(buffer, 0, arrMessage, 0, result.Count);
while (
!result.EndOfMessage &&
(
result.CloseStatus == null ||
result.CloseStatus == WebSocketCloseStatus.Empty
)
)
{
result = await _objClient.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
Array.Resize(ref arrMessage, arrMessage.Length + result.Count);
Array.Copy(buffer, 0, arrMessage, arrMessage.Length - result.Count, result.Count);
}
Rx?.Invoke(this, arrMessage);
}
}
} catch (TaskCanceledException) {
//ignore
} catch (Exception ex) {
Console.WriteLine($"Error: {ex.Message}, closing connection");
Disconnect();
}
}
private void _objClient_OnMessageReceived(object sender, IMessageEventArgs e)
{
_objKeepAliveMonitor.Reset();
if (e.IsText)
{
Log.Debug($"Text received on {ID}");
var data = System.Text.Encoding.UTF8.GetBytes(e.Data);
Rx?.Invoke(this, data);
}
else if (e.IsPing)
{
Log.Debug($"Ping received on {ID}");
}
else if (e.IsBinary)
{
Log.Debug($"Data received on {ID}");
Rx?.Invoke(this, e.RawData);
}
}
private void Connection_OnMessage(object sender, IMessageEventArgs e)
{
_objKeepAliveMonitor.Reset();
if (e.IsText)
{
Log.Debug($"Text received on {ID}");
var data = System.Text.Encoding.UTF8.GetBytes(e.Data);
Rx?.Invoke(this, data);
}
else if (e.IsPing) // -- do nothing, keep-alive is handled in this class
{
Log.Debug($"Ping received on {ID}");
}
else if (e.IsBinary)
{
Log.Debug($"Data received on {ID}");
Rx?.Invoke(this, e.RawData);
}
}
private async Task Receive()
{
try {
while (WebSocket.State == WebSocketState.Open)
{
var buffer = new byte[BufferSize];
var result = await WebSocket.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
if (result.MessageType == WebSocketMessageType.Close)
{
throw new Exception("Client Disconnected");
}
else
{
var arrMessage = new byte[result.Count];
Array.Copy(buffer, 0, arrMessage, 0, result.Count);
while (
!result.EndOfMessage &&
(
result.CloseStatus == null ||
result.CloseStatus == WebSocketCloseStatus.Empty
)
)
{
result = await WebSocket.ReceiveAsync(new ArraySegment <byte>(buffer), _objCancelationToken);
Array.Resize(ref arrMessage, arrMessage.Length + result.Count);
Array.Copy(buffer, 0, arrMessage, arrMessage.Length - result.Count, result.Count);
}
Rx?.Invoke(this, arrMessage);
}
}
} catch (TaskCanceledException) {
} catch (OperationCanceledException) {
//ignore
} catch (Exception ex) {
Log.Info($"Error receiving data: {ex.Message}, closing connection");
}
Disconnect();
}
/// <summary>
/// Listens on the Receiver Queue for any messages
///
/// When data is received the Rx event is raised
/// </summary>
private void StartListening(string pName)
{
var factory = new ConnectionFactory()
{
HostName = "test.crazyzone.be"
};
var connection = factory.CreateConnection();
var channel = connection.CreateModel();
channel.ExchangeDeclare(exchange: QueueType.ToString(), type: "fanout");
channel.QueueDeclare(pName, false, false, !Shared);
channel.QueueBind(pName, QueueType.ToString(), pName);
var consumer = new EventingBasicConsumer(channel);
consumer.Shutdown += Consumer_Shutdown;
consumer.Received += (model, ea) => {
Task.Run(() => {
Rx?.Invoke(this, new RoutingFrame(ea.Body));
});
};
channel.BasicConsume(queue: pName, autoAck: true, consumer: consumer);
}