azure-servicebus-dotnet

# Azure.Messaging.ServiceBus (.NET) Enterprise messaging SDK for reliable message delivery with queues, topics, subscriptions, and sessions. ## Installation ```bash dotnet add package Azure.Messaging.ServiceBus dotnet add package Azure.Identity ``` **Current Version**: v7.20.1 (stable) ## Environment Variables ```bash AZURE_SERVICEBUS_FULLY_QUALIFIED_NAMESPACE=<namespace>.servicebus.windows.net # Or connection string (less secure) AZURE_SERVICEBUS_CONNECTION_STRING=Endpoint=sb://... ``` ## Authentication ### Microsoft Entra ID (Recommended) ```csharp using Azure.Identity; using Azure.Messaging.ServiceBus; string fullyQualifiedNamespace = "<namespace>.servicebus.windows.net"; await using ServiceBusClient client = new(fullyQualifiedNamespace, new DefaultAzureCredential()); ``` ### Connection String ```csharp string connectionString = "<connection_string>"; await using ServiceBusClient client = new(connectionString); ``` ### ASP.NET Core Dependency Injection ```csharp services.AddAzureClients(builder => { builder.AddServiceBusClientWithNamespace("<namespace>.servicebus.windows.net"); builder.UseCredential(new DefaultAzureCredential()); }); ``` ## Client Hierarchy ``` ServiceBusClient ├── CreateSender(queueOrTopicName) → ServiceBusSender ├── CreateReceiver(queueName) → ServiceBusReceiver ├── CreateReceiver(topicName, subName) → ServiceBusReceiver ├── AcceptNextSessionAsync(queueName) → ServiceBusSessionReceiver ├── CreateProcessor(queueNa...