glassechidna 

Middleware facilitation for outbound HttpClient requests that is a mirror image of the functionality provided by ASP.Net Core (and OWIN) inbound request middleware.

HttpClient middleware adapter that enables reuse of existing DelegatingHandlers and HttpMessageHandlers in a middleware pipeline

Asp.Net Core middleware to wrap every request in a HttpClientMiddleware pipeline.

Asp.Net Core and HttpClient middleware to pass through inbound request headers to downstream services