无法使用带有GET请求的动词类型发送内容正文

我目前正通过WebApi收到请求，并试图将其重新发送到另一个站点。

目标是通过示例接收请求： http：// localhost：9999 / #q = test 。 然后将其转发到真实网站:(我的测试我设置了google.com） http://google.com/#q=test

我有以下代码：

protected override async Task SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) { string url = request.RequestUri.PathAndQuery; UriBuilder forwardUri = new UriBuilder(_otherWebSiteBase); forwardUri.Path = url; if (request.Method == HttpMethod.Get) { //request.Method = HttpMethod.Post; } request.RequestUri = forwardUri.Uri; request.Headers.Host = forwardUri.Host; return await _client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);//_client is an HttpClient } 

目前我收到了一个System.Net.ProtocolViolationException ，它声明： Cannot send a content-body with this verb-type.

但我的输入请求是GET请求（应该是GET请求）。 如果我发出POST请求，我就不再有例外了，但Google表示他们不希望发出POST请求。

那么为什么这个例外会来呢？ 有关如何解决它的任何想法？

Answer 1

我最后创建了初始请求的副本，然后再次发送：

 protected override async Task SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) { string url = request.RequestUri.PathAndQuery; UriBuilder forwardUri = new UriBuilder(_otherWebSiteBase); forwardUri.Path = url; HttpRequestMessage newRequest = request.Clone(forwardUri.Uri.ToString()); HttpResponseMessage responseMessage = await _client.SendAsync(newRequest); return responseMessage; } 

克隆方法如下，主要来自这个问题： 如何将HttpRequestMessage转发到另一台服务器

  public static HttpRequestMessage Clone(this HttpRequestMessage req, string newUri) { HttpRequestMessage clone = new HttpRequestMessage(req.Method, newUri); if (req.Method != HttpMethod.Get) { clone.Content = req.Content; } clone.Version = req.Version; foreach (KeyValuePair prop in req.Properties) { clone.Properties.Add(prop); } foreach (KeyValuePair> header in req.Headers) { clone.Headers.TryAddWithoutValidation(header.Key, header.Value); } clone.Headers.Host = new Uri(newUri).Authority; return clone; }