Proxy with HTTP Requests

问题

Would it be possible to route a GET request through a proxy by specifying the host as the proxy? Or would you have to set the destination of the packet?

I am trying to generate an HTTPRequestMessage and route it through a proxy. However, I do not have fine level control of setting the destination of the request being sent out.

回答1:

I was able to add a proxy to HttpClient, HttpWebRequest and HttpRequestMessage. They do not have to be used together, but I just found two ways of making HTTP Requests with proxy. To do this in windows store/metro applications, you would have to implement IWebProxy.

Take a look at this for implementing IWebProxy: http://social.msdn.microsoft.com/Forums/windowsapps/en-US/6e20c2c0-105c-4d66-8535-3ddb9a048b69/bug-missing-type-webproxy-cant-set-proxy-then-where-is-the-appconfig

Then all you need to do is set the proxy for HttpClient or HttpWebRequest:

HttpClient:

HttpClientHandler aHandler = new HttpClientHandler();
IWebProxy proxy = new MyProxy(new Uri("http://xx.xx.xx.xxx:xxxx"));
proxy.Credentials = new NetworkCredential("xxxx", "xxxx");
aHandler.Proxy = proxy;
HttpClient client = new HttpClient(aHandler);

HttpWebRequest:

HttpWebRequest webrequest = (HttpWebRequest)WebRequest.CreateHttp(uri);
IWebProxy proxy = new MyProxy(new Uri("http://xx.xx.xx.xxx:xxxx"));
proxy.Credentials = new NetworkCredential("xxxx", "xxxx");
webrequest.Proxy = proxy;

HttpRequestMessage

Once you construct an HttpRequestMessage, you can use the method above (HttpClient) to send this request message and it will be routed through the proxy without any additional work.

来源：https://stackoverflow.com/questions/17367219/proxy-with-http-requests