如何配置HttpClient在收到301 HTTP狀態碼時不自動重定向？

Question

考慮到重定向

public class ThisController : ApiController 
{ 
    /* more methods */ 

    public override HttpResponseMessage Post() 
    { 
     var result = new HttpResponseMessage(HttpStatusCode.MovedPermanently); 
     // Post requests should be made to "ThatController" instead. 
     string uri = Url.Route("That", null); 
     result.Headers.Location = new Uri(uri, UriKind.Relative); 
     return result; 
    } 
} 

試圖驗證POST'ing數據「API/this」將重定向的ASP.NET Web API服務你「API /那」，我有以下的測試方法：

[TestMethod] 
public void PostRedirects() 
{ 
    using (var client = CreateHttpClient("application/json")) 
    { 
     var content = CreateContent(expected, "application/json"); 
     using (var responseMessage = client.PostAsync("api/this", content).Result) 
     { 
      Assert.AreEqual(HttpStatusCode.MovedPermanently, responseMessage.StatusCode); 
      Assert.AreEqual(new Uri("https://api.example.com/api/that"), responseMessage.Headers.Location); 
     } 
    } 
} 

protected HttpClient CreateHttpClient(string mediaType) 
{ 
    var client = new HttpClient(); 
    client.BaseAddress = new Uri("http://api.example.com/"); 
    MediaTypeWithQualityHeaderValue headerValue = MediaTypeWithQualityHeaderValue.Parse(mediaType); 
    client.DefaultRequestHeaders.Accept.Add(headerValue); 
    client.DefaultRequestHeaders.AcceptEncoding.Add(StringWithQualityHeaderValue.Parse("gzip")); 
    client.DefaultRequestHeaders.AcceptEncoding.Add(StringWithQualityHeaderValue.Parse("deflate")); 
    client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue(new ProductHeaderValue("MyProduct", "1.0"))); 
    client.MaxResponseContentBufferSize = 1024*1024*8; 
    return client; 
} 

protected ObjectContent CreateContent(T model, string mediaType) 
{ 
    var requestMessage = new HttpRequestMessage(); 
    MediaTypeFormatter mediaTypeFormatter = null; 
    switch (mediaType) 
    { 
     case "application/json": 
      mediaTypeFormatter = new JsonMediaTypeFormatter(); 
      break; 

     case "application/xml": 
     case "text/xml": 
      mediaTypeFormatter = new XmlMediaTypeFormatter(); 
      break; 

     default: 
      Assert.Fail(); 
      break; 
    } 

    return requestMessage.CreateContent(
     model, 
     new[] { mediaTypeFormatter }, 
     new FormatterSelector()); 
} 

真正發生的是一個HTTP狀態代碼發送到客戶端的正確位置標頭和HttpClient的然後自動執行對URI一個GET。結果，我的測試永遠不會通過。

如何配置HttpClient在收到301時不自動重定向，以便我可以驗證我的服務器響應？

Answer 1

嘗試：

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