protected void WebSocketOnMessageReceived(object sender, MessageReceivedEventArgs messageReceivedEventArgs)
{
OnRawMessageReceived(messageReceivedEventArgs.Message);
RealtimeChannelResponse response;
RealtimeMessage message;
if ((response = RealtimeChannelResponse.Deserialize(messageReceivedEventArgs.Message)) != null)
{
IRealtimeChannel realtimeChannel = null;
lock (this)
{
if (Channels.ContainsKey(response.ChannelId))
{
realtimeChannel = Channels[response.ChannelId];
}
}
realtimeChannel?.OnChannelResponse(response);
OnChannelUpdated(realtimeChannel);
}
else if ((message = RealtimeMessage.Deserialize(messageReceivedEventArgs.Message)) != null)
{
OnMessageReceived(message);
}
}
public async Task OpenChannelAsync(IRealtimeChannel channel, CancellationToken cancellationToken)
{
var subscriptionMessage = channel.GetSubscriptionMessage();
var myTask = new TaskCompletionSource <SubscribedMessage>();
while (!cancellationToken.IsCancellationRequested)
{
Task <SubscribedMessage> task;
lock (this)
{
if (OpenChannelCompletionSource == null)
{
OpenChannelCompletionSource = myTask;
break;
}
task = OpenChannelCompletionSource.Task;
}
try
{
await task;
}
catch
{
// ignore
}
}
// SubscribeMessage to the event
EventHandler <MessageReceivedEventArgs> messagEventHandler = null;
messagEventHandler = (sender, args) =>
{
RealtimeMessage message;
if ((message = RealtimeMessage.Deserialize(args.Message)) != null)
{
if (message is SubscribedMessage)
{
WebSocket.MessageReceived -= messagEventHandler;
lock (this)
{
myTask.TrySetResult(message as SubscribedMessage);
}
}
else if (message is ErrorMessage)
{
WebSocket.MessageReceived -= messagEventHandler;
lock (this)
{
myTask.TrySetException(new Exception((message as ErrorMessage).Message));
}
}
}
};
WebSocket.MessageReceived += messagEventHandler;
// Cancellation token
cancellationToken.Register(() =>
{
lock (this)
{
myTask.TrySetCanceled();
}
});
// Send subscription message
WebSocket.Send(subscriptionMessage.Serialize());
channel.OnChannelSubscribed(await myTask.Task);
lock (this)
{
OpenChannelCompletionSource = null;
if (Channels.ContainsKey(channel.ChannelId))
{
Channels[channel.ChannelId] = channel;
}
else
{
Channels.Add(channel.ChannelId, channel);
}
}
}