HttpListenerException“参数错误”

本文关键字：参数错误 错误 参数 HttpListenerException | 更新日期: 2023-09-27 18:14:14

我试图服务器一个HttpListenerResponse与一些Json数据，但不断得到一个异常时写入到HttpListenerResponse输出流。

我首先设置响应头，然后设置contentlength，最后将数据写入输出流。

      response.StatusCode = endpointResponse.Status;
      response.ContentType = endpointResponse.ContentType;
      response.ContentLength64 = endpointResponse.Payload.Length;
       //response.OutputStream.Write(endpointResponse.Payload, 0, endpointResponse.Payload.Length); // Throws same exception
        using (var output = response.OutputStream)
        {
          using (var writer = new BinaryWriter(output))
          {
            writer.Write(endpointResponse.Payload); // Throws exception here.
            writer.Flush();
          }
        }
        response.OutputStream.Close();

这会导致writer.Write(endpointResponse. payload)或response.OutputStream.Write(endpointResponse. payload)中出现异常。有效载荷，0,endpointResponse.Payload.Length)

抛出相同的HttpListenerExceptoin，消息为{"参数不正确"}和ErrorCode 87.

   at System.Net.HttpResponseStream.Write(Byte[] buffer, Int32 offset, Int32 size)
   at System.IO.BinaryWriter.Write(Byte[] buffer)
   at FarmLink.Server.Http.HttpHandler.BuildResponse(HttpListenerResponse response, EndpointResponse endpointResponse) in c:'wc'FarmLink'src'FarmLink.Server.Http'HttpHandler.cs:line 82
   at FarmLink.Server.Http.HttpHandler.<ContextCallback>d__0.MoveNext() in c:'wc'FarmLink'src'FarmLink.Server.Http'HttpHandler.cs:line 56

任何想法?

HttpListenerException“参数错误”

更改代码顺序，似乎可以工作。所以不需要在OutputStream的数据前写入头文件到

    response.ContentLength64 = endpointResponse.Payload.Length;
    response.OutputStream.Write(endpointResponse.Payload, 0, endpointResponse.Payload.Length);
    response.OutputStream.Close();
    foreach (var endpointParameter in endpointResponse.Headers)
    {
        response.AddHeader(endpointParameter.Key, endpointParameter.Value);
    }
    response.StatusCode = endpointResponse.Status;
    response.ContentType = endpointResponse.ContentType;

似乎奏效了。

知道为什么吗?

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