/// <summary>
/// Connect.
/// </summary>
public Task <MTProtoConnectResult> Connect(CancellationToken cancellationToken)
{
return(Task.Run(
async() =>
{
var result = MTProtoConnectResult.Other;
using (await _connectionLock.LockAsync(cancellationToken))
{
if (_state == MTProtoConnectionState.Connected)
{
result = MTProtoConnectResult.Success;
return result;
}
Debug.Assert(_state == MTProtoConnectionState.Disconnected);
try
{
_state = MTProtoConnectionState.Connecting;
Console.WriteLine("Connecting...");
await
_clientTransport.ConnectAsync(cancellationToken).ToObservable().Timeout(DefaultConnectTimeout);
_connectionCts = new CancellationTokenSource();
_connectionCancellationToken = _connectionCts.Token;
Console.WriteLine("Connected.");
result = MTProtoConnectResult.Success;
}
catch (TimeoutException)
{
result = MTProtoConnectResult.Timeout;
Console.WriteLine(
string.Format(
"Failed to connect due to timeout ({0}s).",
DefaultConnectTimeout.TotalSeconds));
}
catch (Exception e)
{
result = MTProtoConnectResult.Other;
Console.WriteLine("Failed to connect.: " + e);
}
finally
{
switch (result)
{
case MTProtoConnectResult.Success:
_state = MTProtoConnectionState.Connected;
break;
case MTProtoConnectResult.Timeout:
case MTProtoConnectResult.Other:
_state = MTProtoConnectionState.Disconnected;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
return result;
},
cancellationToken));
}
