Creating a proxy with ApiController

Posted by Phil in ASP.NET MVC on Sep 6th, 2012 | Comments Off

I’ve recently moved to MVC 4, and as part of the clean up work I’ve moved a lot of methods I use for AJAX operations to the new ASP.NET Web API, on controllers that inherit from ApiController.

When it came to migrate a proxy action, I was amazed to find how much easier it is to build a proxy, with the method only taking a couple of lines.

using System; using System.Net.Http; using System.Threading.Tasks; using System.Web.Http; using Http = System.Net.WebRequestMethods.Http; namespace PhilsVersion { public class ProxyController : ApiController { [AcceptVerbs(Http.Get, Http.Head, Http.MkCol, Http.Post, Http.Put)] public async Task<HttpResponseMessage> Proxy(string url) { using (HttpClient http = new HttpClient()) { this.Request.RequestUri = new Uri(url); if (this.Request.Method == HttpMethod.Get) { this.Request.Content = null; } return await http.SendAsync(this.Request); } } } }

A couple of notes on what’s in here:

Ideally I wouldn’t be modifying the original Request object, I’d really like to copy it into a new instance, but I couldn’t find a way to easily do it.
I’m not 100% sure why, but for GET requests the Content property is not null which causes HttpClient to error with a protocol violation exception.

– Phil

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Creating a proxy with ApiController

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