Calling a Service Bus HTTP Endpoint with Authentication using WebClient

This article demonstrates using WebClient in C# to make a client call to a secure Service Bus endpoint exposed using WebHttpRelayBinding. There are two key take-aways from this that mightn’t be covered by existing documentation and samples: (1) learn how place an Access Control STS issued token into the Authorization header, and (2) make a client call to the service without the dependency on the SB client library. The second point is particularly important because non-.NET languages (e.g. PHP, Python, Java) have an analogous to WebClient, therefore understanding this example enables you to easily build clients in other non-.NET languages.

Before getting started you’ll first need to create a WCF service exposed via WebHttpRelayBinding. Below are four files you can copy-paste into your own solution and replace the values for the issuer name, key, and service namespace. The picture below illustrates where you can get the service namespace, default issuer name, and default issuer key to use out-of-the-box with these samples. The page is a screenshot of ServiceNamespace.aspx.

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