/// <summary>
/// Start the connection to the Pusher Server. When completed, the <see cref="Connected"/> event will fire.
/// <param name="connectionTimeout">Time in milliseconds that if connection isn't established should timeout. Recommended is 10000ms.</param>
/// <param name="timeoutAction">The action that should happen when the connection times out.</param>
/// <paramref name="networkTimeout">Time in milliseconds that the network availability checker should repeatedly check for network availability. Recommended is 20000ms.</paramref>
/// <paramref name="networkUnavailableAction">The action that should happen when when the network is unavailable.</paramref>
/// </summary>
public Task ConnectAsync(long connectionTimeout = -1, ConnectionTimeoutAction timeoutAction = ConnectionTimeoutAction.Ignore, long networkTimeout = -1, NetworkUnavailableAction networkUnavailableAction = NetworkUnavailableAction.Ignore)
{
// Prevent multiple concurrent connections
lock (_lockingObject)
{
return(Task.Run(() =>
{
// Ensure we only ever attempt to connect once
if (_connection != null)
{
Log.Warn(Constants.LOG_NAME, ErrorConstants.ConnectionAlreadyConnected);
return;
}
var scheme = _options.Encrypted ? Constants.SECURE_SCHEMA : Constants.INSECURE_SCHEMA;
// TODO: Fallback to secure?
var url = $"{scheme}{_options.Host}/app/{_applicationKey}?protocol={Settings.ProtocolVersion}&client={Settings.ClientName}&version={Settings.VersionNumber}";
_connection = new Connection(this, url);
_connection.Connect(connectionTimeout, timeoutAction, networkTimeout, networkUnavailableAction);
}));
}
}
//private void StartTimer()
//{
// timer = new DispatcherTimer();
// timer.Interval = TimeSpan.FromSeconds(Timeout);
// timer.Tick += Timer_Tick;
// timer.Start();
//}
private void Timer_Tick(object sender, object e)
{
if (_stopTimer == true) // 计时器停止
{
return;
}
//timer.Stop();
this.Request.Abort();
ConnectionTimeoutAction?.Invoke(this);
}
internal void Connect(long connectionTimeout, ConnectionTimeoutAction timeoutAction, long networkTimeout, NetworkUnavailableAction networkUnavailableAction)
{
try
{
// TODO: Add 'connecting_in' event
Log.Info(Constants.LOG_NAME, $"Connecting to: {_url}");
ChangeState(ConnectionState.Initialized);
_allowReconnect = true;
this.connectionTimeout = connectionTimeout;
this.connectionTimeoutAction = timeoutAction;
this.networkTimeout = networkTimeout;
this.networkUnavailableAction = networkUnavailableAction;
timeoutTimer = new System.Timers.Timer(connectionTimeout);
networkTimer = new System.Timers.Timer(networkTimeout);
_websocket = new WebSocket(_url)
{
EnableAutoSendPing = true,
AutoSendPingInterval = 8
};
_websocket.Opened += websocket_Opened;
_websocket.Error += websocket_Error;
_websocket.Closed += websocket_Closed;
_websocket.MessageReceived += websocket_MessageReceived;
ChangeState(ConnectionState.Connecting);
if (connectionTimeout != -1) // If the user provided a timeout value
{
StartTimeoutCountdown();
}
// Websocket does not notice when the internet dies, this is a temp workaround until there's a fix
if (networkTimeout != -1)
{
StartCheckForInternetConnection();
}
_websocket.Open();
reconnectAlreadyInProgress = false;
}
catch (Exception e)
{
Log.Error(Constants.LOG_NAME, $"{e.Message}");
}
}