AllowAutoRedirect在WindowsPhone的

Question

在HttpClientHandler已經propertie AllowAutoRedirect，但對WindowsPhone的拋出異常構建應用程序：

HttpClientHandler.AllowAutoRedirect不支持此平臺上。在使用HttpClientHandler.AllowAutoRedirect之前，請檢查HttpClientHandler.SupportsRedirectConfiguration。

我真的想要防止autoredirect。 我試圖用HttpWebRequest的：

var client = (HttpWebRequest) WebRequest.Create(connectionUrl); 
client.Headers["AllowAutoRedirect"] = "false"; 
client.Method = "GET"; 
client.Headers["UserAgent"] = @"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31"; 
client.ContentType = "application/json"; 
client.Headers["ContentLength"] = client.ToString().Length.ToString(); 
client.BeginGetResponse(Callback, client); 
private void Callback(IAsyncResult ar) 
{ 
var requestState =(HttpWebRequest) ar.AsyncState; 
using (var postStream = requestState.EndGetRequestStream(ar)) 
{} 
} 

這個代碼拋出異常的EndGetRequestStream：「值沒有在預期範圍內」 我期待着您的幫助。

Answer 1

我認爲你收到的ArgumentException: Value does not fall within the expected range，因爲你是在客戶端上發起BeginGetResponse()但後來做了EndGetRequestStream()在你的回調，而不是在那裏，你應該叫EndGetResponse()。設置AllowAutoRedirect工作正常，你只需要修復你的代碼。試試這個：

var client = (HttpWebRequest)WebRequest.Create(connectionUrl); 
    client.AllowAutoRedirect = false; 
    client.Method = "GET"; 
    client.BeginGetResponse(Callback, client); 

    private void Callback(IAsyncResult ar) { 
     var state = (HttpWebRequest)ar.AsyncState; 
     using (var response = state.EndGetResponse(ar)) { 
      var streamResponse = response.GetResponseStream(); 
      var streamRead = new StreamReader(streamResponse); 
      var responseString = streamRead.ReadToEnd(); 
     } 
    } 

Answer 2

爲什麼不使用HttpClient和HttpClientHandler？

HttpClientHandler clientHandler = new HttpClientHandler(); 
clientHandler.AllowAutoRedirect = false; 

// Create an HttpClient using the HttpClientHandler 
HttpClient client = new HttpClient(clientHandler); 

更多信息：http://blogs.msdn.com/b/henrikn/archive/2012/08/07/httpclient-httpclienthandler-and-httpwebrequesthandler.aspx