/// <summary>
/// Occurs when a message is received.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private Task OnMessageReceived(MqttApplicationMessageReceivedEventArgs e)
{
return(Task.Run(() =>
{
try
{
if (!e.ApplicationMessage.Topic.StartsWith("emitter"))
{
var handlers = this.Trie.Match(e.ApplicationMessage.Topic);
// Invoke every handler matching the channel
foreach (MessageHandler handler in handlers)
{
handler(e.ApplicationMessage.Topic, e.ApplicationMessage.Payload);
}
if (handlers.Count == 0)
{
DefaultMessageHandler?.Invoke(e.ApplicationMessage.Topic, e.ApplicationMessage.Payload);
}
return;
}
// Did we receive a keygen response?
if (e.ApplicationMessage.Topic == "emitter/keygen/")
{
// Deserialize the response
var response = KeygenResponse.FromBinary(e.ApplicationMessage.Payload);
if (response == null || response.Status != 200)
{
this.InvokeError(response.Status);
return;
}
// Call the response handler we have registered previously
// TODO: get rid of the handler afterwards, or refac keygen
if (this.KeygenHandlers.ContainsKey(response.Channel))
{
((KeygenHandler)this.KeygenHandlers[response.Channel])(response);
}
return;
}
if (e.ApplicationMessage.Topic == "emitter/presence/")
{
var presenceEvent = PresenceEvent.FromBinary(e.ApplicationMessage.Payload);
var handlers = this.PresenceTrie.Match(presenceEvent.Channel);
// Invoke every handler matching the channel
foreach (PresenceHandler handler in handlers)
{
handler(presenceEvent);
}
if (handlers.Count == 0)
{
DefaultPresenceHandler?.Invoke(presenceEvent);
}
return;
}
if (e.ApplicationMessage.Topic == "emitter/error/")
{
var errorEvent = ErrorEvent.FromBinary(e.ApplicationMessage.Payload);
var emitterException = new EmitterException((EmitterEventCode)errorEvent.Status, errorEvent.Message);
InvokeError(emitterException);
return;
}
if (e.ApplicationMessage.Topic == "emitter/me/")
{
var meResponse = MeResponse.FromBinary(e.ApplicationMessage.Payload);
Me?.Invoke(meResponse);
return;
}
return;
}
catch (Exception ex)
{
this.InvokeError(ex);
return;
}
}));
}