two string values for constructor using castle windsor.Resolving object with List of different implementations as constructor parameter using Castle Windsor.Registering an Object that has a string array as a parameter using Castle Windsor Fluent Registration API.Castle Windsor using wrong component to satisfy a dependency.Does Castle Windsor have a naming convention to judge lifestyle automagically?.Injecting Dependencies using Castle Windsor.public class LongLivedWebRequestHandler : WebRequestHandler So we created a WebRequestHandler that does nothing in Dispose() as below, passed that to the DelegatingHandler ctor, and then passed the DelegatingHandler to the HttpClient ctor with disposeHandler set to false. I hope this helps, I'm new to stackoverflow so can't post more than two links apparently.ġ) Just have a static/singleton HttpClient, and pass any per-call headers with HttpRequestMessage as described hereĢ) Have a static/singleton WebRequest|HttpClientHandler, and pass that to the HttpClient ctor with disposeHandler set to false.ģ) In some cases, we had a DelegatingHandler instrumentation library that needed to be disposed after each HttpClient call. Scott, here are three approaches we have used that work. If you want to have a new HttpClient instance because it's got per-call data on it, then you can have a singleton HttpClientHandler, pass it to the HttpClient ctor, and that will share the TCP connections across the HttpClient instances. I would implement this by defining a strongly-typed client class that implements an interface, and then depending on the interface in my classes (not directly on the client.) Then Windsor can create the class for an interface and maintain it as a singleton.īy default if you create a new instance of HttpClient for each call, then each call will create a new TCP connection, and this will cause latency and reduced throughput. It's highly upvoted and I don't see any dissent from experience (or otherwise) so I'm going to reference it when doing some near-term development. I did some looking and found this answer indicating that an HttpClient should be reused for a given API. Otherwise there's not much benefit over just instantiating an HttpClient directly in your class. That's one of the big benefits of using Windsor or another DI container. Even then it may make unit testing easier. It's also not a bad idea to depend on an abstraction (an interface) rather than on the HttpClient directly unless you're certain that the class would never be used apart from making HTTP requests. That's safest when you're not sure that the class can function as a singleton. I would use LifestyleTransient to create a new one for each request.
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