public MqttClientConnectedEventArgs(MqttClientAuthenticateResult authenticateResult)
{
AuthenticateResult = authenticateResult ?? throw new ArgumentNullException(nameof(authenticateResult));
}
public async Task <MQTTnet.Client.Connecting.MqttClientAuthenticateResult> ConnectAsync(CancellationToken cancellationToken)
{
var cancelToken = cancellationToken != null ? cancellationToken : CancellationToken.None;
MQTTnet.Client.Connecting.MqttClientAuthenticateResult connectPrimary = null;
if (!LocalClient.IsConnected)
{
LocalClient.UseConnectedHandler(async e =>
{
var primaryFilters = Options.LocalFilters != null && Options.LocalFilters.Any()
? Options.LocalFilters
: new TopicFilter[] { new TopicFilterBuilder().WithTopic("#").Build() };
await LocalClient.SubscribeAsync(primaryFilters);
});
connectPrimary = await LocalClient.ConnectAsync(Options.LocalOptions, cancelToken);
if (connectPrimary.ResultCode != MqttClientConnectResultCode.Success)
{
throw new ArgumentException("LocalOptions, could not connect to primary server.");
}
}
LocalClient.UseDisconnectedHandler(async e =>
{
var connectRetry = Policy
.Handle <Exception>()
.WaitAndRetryForeverAsync(
retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(exception, timespan) =>
{
Console.WriteLine("### DISCONNECTED FROM SERVER ###");
});
await connectRetry.ExecuteAsync(async() => {
var response = await LocalClient.ConnectAsync(Options.LocalOptions, cancelToken);
Console.Write($"{response.ResultCode} {response.ReasonString}");
});
});
LocalClient.UseApplicationMessageReceivedHandler(e =>
{
var message = new MqttApplicationMessageBuilder()
.WithTopic(e.ApplicationMessage.Topic)
.WithPayload(e.ApplicationMessage.Payload);
if (e.ApplicationMessage.Retain)
{
message = message.WithRetainFlag();
}
switch (e.ApplicationMessage.QualityOfServiceLevel)
{
case MqttQualityOfServiceLevel.ExactlyOnce:
message = message.WithExactlyOnceQoS();
break;
case MqttQualityOfServiceLevel.AtLeastOnce:
message = message.WithAtLeastOnceQoS();
break;
case MqttQualityOfServiceLevel.AtMostOnce:
message = message.WithAtMostOnceQoS();
break;
default:
throw new ArgumentOutOfRangeException();
}
Task.Run(async() => await SendHubEventAsync(e.ClientId, message.Build()), cancelToken);
});
await ReceiveHubMessagesAsync().ConfigureAwait(false);
return(connectPrimary);
}
