/// <summary>
/// Disconnects this client from Discord. This method must be called when you are finished with this object.
/// </summary>
public void Disconnect()
{
_heartbeater.Dispose();
_dispatcher.TearDown();
_listener.Dispose();
_heartbeater = null;
_listener = null;
_dispatcher = null;
// TODO: Disconnect
}
public GatewayHeartbeater(ResponseListener listener, SemaphoreSlim seqMutex, Func <long?> seqGetter, Func <bool, bool, Task> connect)
{
// TODO: Send heartbeat back when gateway requests a heartbeat (listen for GatewayOpCode.Heartbeat)
_listener = listener;
_seqMutex = seqMutex;
_seqGetter = seqGetter;
_aborts = 0;
_fire = false;
_ackMutex = new SemaphoreSlim(1);
_heardAck = true;
_connect = connect;
}
private async Task <Server[]> HandshakeAsync(bool reconnect, bool resumable, GatewaySocket socket, IRef <bool> loop)
{
DiscordDebug.WriteLine("Getting Hello data...");
ReceiveGatewayData data = await socket.ReadAsync();
DiscordDebug.WriteLine("Got Hello data.");
if (reconnect)
{
_listener.UpdateSocket(socket);
}
else
{
DiscordDebug.WriteLine("Initializing response listener and heartbeater...");
_listener = new ResponseListener(socket);
_heartbeater = new GatewayHeartbeater(_listener, _seqMutex, () => _lastSequence, ConnectAsync);
DiscordDebug.WriteLine("Response listener and heartbeater initialized.");
}
// Need to handle cases where heartbeat timer elapses, thus the event/semaphore model
DiscordDebug.WriteLine("Waiting for initial heartbeat ack...");
var signal = new Semaphore(0, 1);
bool success = false;
void EvtListener(object sender, bool e)
{
success = e;
signal.Release();
}
_heartbeater.Started += EvtListener;
_heartbeater.Start(data, reconnect);
signal.WaitOne();
_heartbeater.Started -= EvtListener;
if (success)
{
DiscordDebug.WriteLine("Heartbeat ack heard.");
return(await IdentAsync(reconnect, resumable));
// ReSharper disable once RedundantIfElseBlock
}
else
{
DiscordDebug.WriteLine("Heartbeat ack not heard, trying again...");
// Reconnect immediately
await _heartbeater.AbortAsync();
_heartbeater.Dispose();
_listener.Dispose();
loop.Value = true;
return(null);
}
}