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System.Net.Http for Silverlight\n\nSilverlight 版本的 System.Net.Http ， 源自 Mono 的源代码。 使用方法参考 [http://msdn.microsoft.com/library/system.net.http.aspx](http://msdn.microsoft.com/library/system.net.http.aspx)\n\n[由于 Silverlight 平台对 HTTP 的限制](http://msdn.microsoft.com/library/cc838250.aspx)， 移除了部分功能， 例如 Proxy 、 AllowAutoRedirect 、 PreAuthenticate 以及 KeepAlive 设置等， 这些都是 Silverlight 不支持的。\n\n对于 Silverlight 的 BrowserHttp ， 仅仅支持 GET 和 POST 方法， 示例代码如下：\n\n```c#\nHttpClient client = new HttpClient {\n   BaseAddress = new Uri(\"http://localhost:8080/HttpTestWeb/api/\")\n};\n\n// Get string from server\nclient.GetStringAsync(\"browserhttp/\").ContinueWith(t =\u003e {\n   if (t.IsFaulted) {\n      // report error here\n      //Application.Current.ReportError(t.Exception.GetBaseException());\n   } else {\n      string txt = t.Result;\n      //Assert.IsFalse(string.IsNullOrEmpty(txt));\n   }\n});\n\n// Post form data to server\nvar param = new Dictionary\u003cstring, string\u003e {\n   {\"Name\", \"Client Post\"},\n   {\"Age\", \"1\"},\n   {\"Birthday\", DateTime.Today.ToString(\"s\")}\n};\nclient.PostAsync(\"browserhttp/\", new FormUrlEncodedContent(param)).ContinueWith(t =\u003e {\n   if (t.IsFaulted) {\n      // report error here\n      // Application.Current.ReportError(t.Exception.GetBaseException());\n   } else {\n      HttpResponseMessage response = t.Result;\n      //Assert.IsTrue(response.EnsureSuccessStatusCode);\n   }\n});\n```\n\n对于 ClientHttp ， 除了 GET 和 POST 之外， 还支持 PUT 和 DELETE （其它的 HTTP 方法也可能支持， 未测试）， 示例代码如下：\n\n```c#\n// PUT to update\nvar param = new Dictionary\u003cstring, string\u003e {\n   {\"Id\", \"1\" },\n   {\"Name\", \"Client Post\"},\n   {\"Age\", \"1\"},\n   {\"Birthday\", DateTime.Today.ToString(\"s\")}\n};\nclient.PutAsync(\"clienthttp/1\", new FormUrlEncodedContent(param)).ContinueWith(t =\u003e {\n   if (t.IsFaulted) {\n      // report error here\n      // Application.Current.ReportError(t.Exception.GetBaseException());\n   } else {\n      HttpResponseMessage response = t.Result;\n      //Assert.IsTrue(response.EnsureSuccessStatusCode);\n   }\n});\n\n// DELETE\nclient.DeleteAsync(\"clienthttp/1\").ContinueWith(t =\u003e {\n   if (t.IsFaulted) {\n      // report error here\n      // Application.Current.ReportError(t.Exception.GetBaseException());\n   } else {\n      HttpResponseMessage response = t.Result;\n      //Assert.IsTrue(response.EnsureSuccessStatusCode);\n   }\n});\n```\n\n支持职责链模式的 MessageProcessingHandler ， 如下面的代码所示：\n\n```c#\npublic class CustomProcessingHandler : MessageProcessingHandler {\n\n   protected override HttpRequestMessage ProcessRequest(HttpRequestMessage request, CancellationToken cancellationToken) {\n      if (request.Method != HttpMethod.Get \u0026\u0026 request.Method != HttpMethod.Post) {\n         request.Headers.TryAddWithoutValidation(\"RequestMethod\", request.Method.Method);\n         request.Method = HttpMethod.Post;\n      }\n      return request;\n   }\n\n   protected override HttpResponseMessage ProcessResponse(HttpResponseMessage response, CancellationToken cancellationToken) {\n      var request = response.RequestMessage;\n      if (request.Headers.Contains(\"RequestMethod\")) {\n         IEnumerable\u003cstring\u003e values;\n         if (request.Headers.TryGetValues(\"RequestMethod\", out values)) {\n            request.Method = new HttpMethod(values.First());\n         }\n      }\n      return response;\n   }\n}\n```\n\n使用起来也是非常简单的：\n\n```c#\nvar customHandler = new CustomProcessingHandler {\n\tInnerHandler = new HttpClientHandler()\n};\nvar client = new HttpClient(customHandler, true) {\n\tBaseAddress = new Uri(\"http://localhost:8080/HttpTestWeb/api/\")\n};\n```","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbeginor%2Fsystem_net_http","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbeginor%2Fsystem_net_http","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbeginor%2Fsystem_net_http/lists"}