/// <inheritdoc />
public async Task ConnectAsync(ISession session, CancellationToken ct = default(CancellationToken),
bool appearOnline = false, int connectTimeout = 5000)
{
if (_listener != null)
{
await _listener.CloseAsync();
_messageReplies.Clear();
_listener.Dispose();
_listener = null;
}
var addr = new UriBuilder(_baseUri)
{
Path = "/ws",
Query = string.Concat("lang=en&status=", appearOnline, "&token=", session.AuthToken)
};
var timeoutTask = Task.Delay(TimeSpan.FromMilliseconds(connectTimeout), ct);
var connectTask = _client.ConnectAsync(addr.Uri, ct);
// Limit time (msec) allowed for connect attempts.
if (await Task.WhenAny(connectTask, timeoutTask).ConfigureAwait(false) == timeoutTask)
{
throw new TimeoutException($"Socket connect timed out after '{connectTimeout}' milliseconds.");
}
_listener = await connectTask.ConfigureAwait(false);
ReadSocketAsync(ct);
WriteSocketAsync(ct);
}
private static async Task EchoAllIncomingMessagesAsync(WebSocket webSocket, CancellationToken cancellation)
{
Console.WriteLine("Client '" + webSocket.RemoteEndpoint + "' connected.");
var sw = new Stopwatch();
try
{
while (webSocket.IsConnected && !cancellation.IsCancellationRequested)
{
try
{
var messageText = await webSocket.ReadStringAsync(cancellation).ConfigureAwait(false);
if (messageText == null)
{
break; // webSocket is disconnected
}
Console.WriteLine("Client '" + webSocket.RemoteEndpoint + "' recived: " + messageText + ".");
sw.Restart();
messageText = WebSocketHandler(messageText);
await webSocket.WriteStringAsync(messageText, cancellation).ConfigureAwait(false);
Console.WriteLine("Client '" + webSocket.RemoteEndpoint + "' sent: " + messageText + ".");
sw.Stop();
}
catch (TaskCanceledException)
{
break;
}
catch (Exception readWriteError)
{
Console.WriteLine("An error occurred while reading/writing echo message.", readWriteError);
await webSocket.CloseAsync().ConfigureAwait(false);
}
}
}
finally
{
webSocket.Dispose();
Console.WriteLine("Client '" + webSocket.RemoteEndpoint + "' disconnected.");
}
}