Simple WebAPI Proxy

using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace Routing.Modules
{
	public class WebAPIBridgeModule : IHttpModule
	{
		protected HttpApplication App;

		public WebAPIBridgeModule()
		{
		}

		public void Dispose()
		{

		}

		public void Init(HttpApplication context)
		{
			this.App = context;
			context.BeginRequest += context_BeginRequest;
		}

		void context_BeginRequest(object sender, EventArgs e)
		{
			if (!this.App.Request.RawUrl.StartsWith("/webapi-proxy"))
			{
				return;
			}
			
			var request = (HttpWebRequest)WebRequest.Create("https://www.example.com/API/" + this.App.Request.RawUrl.Replace("/webapi-proxy", string.Empty));

			request.ContentType = this.App.Request.ContentType;
			request.Method = this.App.Request.HttpMethod;
			request.UserAgent = this.App.Request.UserAgent;

			if (request.Method.ToLower() == "post" || request.Method.ToLower() == "push")
			{
				var origReqStream = new StreamReader(this.App.Request.InputStream);
				var outReqStreamWriter = new StreamWriter(request.GetRequestStream());
				outReqStreamWriter.Write(origReqStream.ReadToEnd());
				this.App.Request.Headers.AllKeys.ForEach(k =>
				{
					if (request.Headers.AllKeys.Contains(k))
					{
						request.Headers[k] = this.App.Request.Headers[k];
					}
					else
					{
						request.Headers.Add(k, this.App.Request.Headers[k]);
					}
				});
			}

			HttpWebResponse response = null;
			try
			{
				response = (HttpWebResponse)request.GetResponse();
			}
			catch (WebException we)
			{
				response = we.Response as HttpWebResponse;
			}
			
			this.App.Response.ContentEncoding = Encoding.UTF8;
			this.App.Response.ContentType = response.ContentType;
			this.App.Response.Write(new StreamReader(response.GetResponseStream()).ReadToEnd());
			this.App.Response.StatusCode = (int)response.StatusCode;
			this.App.Response.StatusDescription = response.StatusDescription;
			response.Headers.AllKeys.ForEach(k =>
			{
				if (this.App.Response.Headers.AllKeys.Contains(k))
				{
					this.App.Response.Headers[k] = response.Headers[k];
				}
				else
				{
					this.App.Response.Headers.Add(k, response.Headers[k]);
				}
			});
			this.App.CompleteRequest();
		}
	}
}