Testing Azure Service Bus Locally: A Guide to Using the Emulator without Subscription or Login

To test Azure Service Bus locally without any subscription or login, you can use the Azure Service Bus Emulator. The emulator provides a local environment that simulates the Azure Service Bus functionality, allowing you to develop and test your applications without requiring an actual Azure subscription.

Here's how you can set up and use the Azure Service Bus Emulator:

Download and install the Azure Service Bus Emulator from the Microsoft Download Center. Make sure you select the appropriate version for your operating system.
After installation, open the Azure Service Bus Emulator from the Start menu or the installation directory.
The emulator runs locally on your machine and listens on localhost. By default, it uses the following ports:
- Port 9354: Service Bus Messaging
- Port 5671: AMQP over SSL
- Port 5672: AMQP
- Port 9355: HTTPS
- Port 9327: REST
To use the emulator in your application, you need to update the connection string to point to the emulator instead of the Azure cloud. The connection string should be in the following format:
```
Endpoint=sb://localhost/;SharedAccessKeyName=RootManageSharedAccessKey;SharedAccessKey=MyAccessKey
```
Replace MyAccessKey in the connection string with the actual access key you want to use for authentication. The emulator uses a default key, DZkuJtT2YjVXZJ0b07ZmkKFtN4e/tAtj/3K7vAOX94A=, but you can change it if desired.
In your application code, use the updated connection string to connect to the Azure Service Bus Emulator.

With the Azure Service Bus Emulator set up, you can now develop and test your application locally without the need for an Azure subscription or login. The emulator provides a local environment that mimics the behavior of the actual Azure Service Bus, allowing you to send and receive messages, create topics and subscriptions, and perform other operations just as you would with the real service.

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