public static AspNetMqttServerOptionsBuilder WithAttributeRouting(this AspNetMqttServerOptionsBuilder options)
{
var router = options.ServiceProvider.GetRequiredService <MqttRouter>();
var interceptor = new MqttServerApplicationMessageInterceptorDelegate(context => router.OnIncomingApplicationMessage(options, context));
options.WithApplicationMessageInterceptor(interceptor);
return(options);
}
public MqttConsumer()
{
/*
* MqttServerOptions validator = new MqttServerOptions();
* validator.ConnectionValidator = new IMqttServerConnectionValidator(
* {
*
* c.ReturnCode = MqttConnectReturnCode.ConnectionAccepted;
* Console.WriteLine("Connexion OK");
* }
*
*
* MqttServerOptions subValidator = new MqttServerOptions();
* subValidator.SubscriptionInterceptor = context =>
* {
* context.AcceptSubscription = true;
* Console.WriteLine("Subscribe OK");
*
* };
*
*/
//var certificate = new X509Certificate(@"C:\Users\StreamX\Desktop\TestCa.crt", "");
//MqttServerOptions certifOption = new MqttServerOptions();
//certifOption.TlsEndpointOptions.Certificate = certificate.Export(X509ContentType.Cert);
//certifOption.TlsEndpointOptions.IsEnabled = true;
var conUserValidator = new MqttServerOptions
{
ConnectionValidator = new MqttServerConnectionValidatorDelegate(p =>
{
//if (p.ClientId != "SpecialClient") return;
if (p.Username != "test" || p.Password != "test")
{
p.ReasonCode = MqttConnectReasonCode.BadUserNameOrPassword;
}
if (string.IsNullOrEmpty(p.ClientId))
{
return;
}
}),
ApplicationMessageInterceptor = new MqttServerApplicationMessageInterceptorDelegate(context =>
{
/*
* if (!MqttTopicFilterComparer.IsMatch(context.ApplicationMessage.Topic, "platooning"))
* {
* // Replace the payload with the timestamp. But also extending a JSON
* // based payload with the timestamp is a suitable use case.
* context.ApplicationMessage.Payload = Encoding.UTF8.GetBytes(DateTime.Now.ToString("O"));
* }*/
if (!context.ApplicationMessage.Topic.StartsWith("platooning/"))
{
context.AcceptPublish = false;
context.CloseConnection = true;
}
}),
SubscriptionInterceptor = new MqttServerSubscriptionInterceptorDelegate(context =>
{
if (context.TopicFilter.Topic.StartsWith("platooning/broadcast/"))
{
var plotooningId = context.TopicFilter.Topic.Replace("platooning/broadcast/", "");
using var dbcontext = new MqttBrokerDbContext();
try
{
var followvehicleEnable = dbcontext.Platoon.FirstOrDefault(f => f.Enable &&
f.IsFollower &&
f.ClientId == context.ClientId && f.PlatoonRealId == plotooningId);
if (followvehicleEnable == null)
{
context.AcceptSubscription = false;
context.CloseConnection = true;
}
}
catch (Exception exception)
{
var log = new Log
{
Exception = exception.StackTrace
};
dbcontext.Log.AddAsync(log);
dbcontext.SaveChanges();
Console.WriteLine(exception);
}
//context.AcceptSubscription = false;
//context.CloseConnection = true;
}
if (context.TopicFilter.Topic.StartsWith("admin/foo/bar") && context.ClientId != "theAdmin")
{
//context.AcceptSubscription = false;
}
if (context.TopicFilter.Topic.StartsWith("the/secret/stuff") && context.ClientId != "Imperator")
{
//context.AcceptSubscription = false;
//context.CloseConnection = true;
}
})
};
OptionsBuilder = new MqttServerOptionsBuilder()
.WithClientCertificate()
.WithConnectionBacklog(100)
.WithDefaultEndpointPort(1883)
.WithConnectionValidator(conUserValidator.ConnectionValidator)
.WithApplicationMessageInterceptor(conUserValidator.ApplicationMessageInterceptor)
.WithSubscriptionInterceptor(conUserValidator.SubscriptionInterceptor)
.WithPersistentSessions()
// .WithEncryptionCertificate(certifOption.TlsEndpointOptions.Certificate)
//.WithEncryptedEndpoint()
.Build();
Server = new MqttFactory().CreateMqttServer();
}
