用.Net HttpClient設置'每個請求'的cookie

您好我正在嘗試使用Owin基礎設施來實現簡單的http代理服務。此代理必須使用Windows身份驗證對用戶進行身份驗證，從企業AD中提取用戶屬性，將此信息作爲cookie值添加到原始請求中，然後將請求重定向到Internet上的應用程序（稱爲「外部應用程序」）。用.Net HttpClient設置'每個請求'的cookie

我正在使用HttpClient向外部應用程序發送請求。

但是HttpClient不適合這種情況。似乎唯一允許的使用cookie的方式是將它們放入CookieContainer中，並將此CookieContainer設置爲HttpClientHandler的屬性。當你有單一用戶時沒關係，但如果是代理服務，來自不同用戶的cookie值將會混合並相互覆蓋。

是否有任何方法可以爲每個請求設置Cookie或CookieContainer？或者，也許有更好的方式來重定向請求？

P.S.下面是一些代碼：

初始化HTTP處理的：

private void RegisterRoutes(HttpConfiguration config) 
    { 
     config.Routes.MapHttpRoute(
      name: "Proxy", 
      routeTemplate: "{*path}", 
      handler: HttpClientFactory.CreatePipeline 
       (
        innerHandler: new HttpClientHandler(), 
        handlers: new DelegatingHandler[] 
        { 
         new ProxyHandler() 
        } 
       ), 
      defaults: new { path = RouteParameter.Optional }, 
      constraints: null); 
    }

ProxyHandler 內部類ProxyHandler：DelegatingHandler { 私人只讀HttpClient的_client;

public ProxyHandler() 
    { 
     var handler = new HttpClientHandler { ClientCertificateOptions = ClientCertificateOption.Automatic}; 

     _client = new HttpClient(handler); 
    } 

    protected async override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) 
    { 
     var forwardUri = new UriBuilder(request.RequestUri); 
     forwardUri.Host = "localhost"; 
     forwardUri.Port = 23016; 
     forwardUri.Scheme = Uri.UriSchemeHttp; 

     request.RequestUri = forwardUri.Uri; 
     request.Headers.Host = forwardUri.Host; 

     //Explicitly null it to avoid protocol violation 
     if (request.Method == HttpMethod.Get || request.Method == HttpMethod.Trace) 
      request.Content = null; 

     try 
     { 
      var response = await _client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken); 

      //Explicitly null it to avoid protocol violation 
      if (request.Method == HttpMethod.Head) 
       response.Content = null; 
      return response; 
     } 
     catch (Exception ex) 
     { 
      var response = request.CreateErrorResponse(HttpStatusCode.InternalServerError, ex); 
      string message = ex.Message; 
      if (ex.InnerException != null) 
       message += ':' + ex.InnerException.Message; 
      response.Content = new StringContent(message); 
      Trace.TraceError("Error:{0}", message); 
      return response; 
     } 
    } 

    private void SetCookies(HttpRequestMessage request) 
    { 
     var container = new CookieContainer(); 

     var authCookieValue = "2EF91D8FD9EDC594F2DB82"; 
     var authCookie = new Cookie("cookieByProxy", authCookieValue); 

     var targetUri = new Uri("http://localhost:23016/"); 
     container.Add(targetUri, authCookie); 

     var cookieHeader = container.GetCookieHeader(targetUri); 

     if (!string.IsNullOrEmpty(cookieHeader)) 
      request.Headers.TryAddWithoutValidation("Cookie", cookieHeader);//Overwriting cookie header with custom values. However cookie values are ignored by HttpClient (both old and new) 
    } 
}

來源

2016-11-25 Pavel Pykhtin

謝謝你的建議，但我實際上期待高流量。 –

發現這裏的解決方案：enter link description here 訣竅是在HttpClientHandler的UseCookie標誌明確設置爲假。

var handler = new HttpClientHandler { ClientCertificateOptions = ClientCertificateOption.Automatic, UseCookie = false };

來源

2016-11-28 07:10:12

用.Net HttpClient設置'每個請求'的cookie

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