MassTransit

A free, open-source distributed application framework for .NET

MassTransit is an open-source framework for building distributed systems using message-based architecture. It allows you to send and receive messages between different applications and services in a reliable and efficient way. In this article, we will discuss how to use MassTransit to send message queues using C#.

To get started, you will need to install the MassTransit package using the NuGet package manager. You can do this by running the following command in the Package Manager Console:

Install-Package MassTransit

Once the package is installed, you can start sending messages using the ISendEndpoint interface. This interface is used to send messages to a specific address or queue. Here is an example of how to send a message using the ISendEndpoint interface:

var busControl = Bus.Factory.CreateUsingRabbitMq(cfg =>
{
    cfg.Host("rabbitmq://localhost");
});

busControl.Start();

var sendEndpoint = busControl.GetSendEndpoint(new Uri("rabbitmq://localhost/myqueue")).Result;

await sendEndpoint.Send(new MyMessage { Text = "Hello, World!" });

busControl.Stop();

In the above example, we are creating a new instance of the IBusControl interface using the RabbitMQ transport. We then start the bus, get the send endpoint for the queue "myqueue" and send a message of type "MyMessage" with the text "Hello, World!". Finally, we stop the bus.

You can also receive messages using the IConsumeEndpoint interface. This interface is used to subscribe to messages on a specific queue. Here is an example of how to receive messages using the IConsumeEndpoint interface:

busControl.Start();

var consumeEndpoint = busControl.GetConsumeEndpoint(new Uri("rabbitmq://localhost/myqueue")).Result;

consumeEndpoint.Subscribe<MyMessage>(message =>
{
    Console.WriteLine(message.Text);
});

busControl.Stop();

In the above example, we start the bus, get the consume endpoint for the queue “myqueue” and subscribe to messages of type “MyMessage”. When a message is received, it will be printed to the console. Finally, we stop the bus.

You can also use the IBusControl interface to send and receive messages using the same bus instance. Here is an example of how to use the IBusControl interface to send and receive messages:

busControl.Start();

busControl.Publish(new MyMessage { Text = "Hello, World!" });

busControl.Subscribe<MyMessage>(message =>
{
    Console.WriteLine(message.Text);
});

busControl.Stop();

In the above example, we start the bus, publish a message of type “MyMessage” with the text “Hello, World!”, and subscribe to messages of type “MyMessage”. When a message is received, it will be printed to the console. Finally, we stop the bus.

There are many abracted NuGet packages available where you can use MassTransit with your favourite messaging services providers

MassTransit is a powerful framework for building distributed systems using message-based architecture. It allows you to send and receive messages in a reliable and efficient way.