Question

我遇到了代理http流的问题。

首先：我正在使用VLC播放器创建http协议媒体流服务器。

第二：我正在使用HttpListener在一个端口上侦听http请求，并试图从vlc服务器端口转发响应作为第一个响应。

代理：

Client            Server(:1234)                         VLC(:2345)
       -request-> HttpListener
                  HttpWebRequest           -request->
                  HttpWebResponse         <-response-
                 Stream <=Copy= Stream
      <-response- HttpListenerResponse

一切正常。但仍有一个问题。我正在尝试将实时流复制到HttpListenerResponse。但我不能将负值附加到其属性ContentLength64。 HttpWebResponse ContentLength属性的值为-1。它应该是无限长度内容的值。

这是必要的，因为我正在转发直播。

void ProxyRequest(HttpListenerResponse httpResponse)
{
    HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create("http://localhost:2345");
    HttpWebResponse HttpWResp = (HttpWebResponse)HttpWReq.GetResponse();

    // this must be >=0. Throws ArgumentOutOfRangeException "The value specified for a set operation is less than zero."
    httpResponse.ContentLength64 = HttpWResp.ContentLength;

    byte[] buffer = new byte[32768];
    int bytesWritten = 0;
    while (true)
    {
        int read = HttpWResp.GetResponseStream().Read(buffer, 0, buffer.Length);
        if (read <= 0)
            break;
        httpResponse.OutputStream.Write(buffer, 0, read);
        bytesWritten += read;
    }
}

有没有人能解决这个问题？

Answer 1

将SendChunked属性设置为true并删除ContentLength64值分配应该是解决方案。就像你提供的链接中描述的一样。

void ProxyRequest(HttpListenerResponse httpResponse)
{
    HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create("http://localhost:2345");
    HttpWebResponse HttpWResp = (HttpWebResponse)HttpWReq.GetResponse();

    // Solution!!!
    httpResponse.SendChunked = true;

    byte[] buffer = new byte[32768];
    int bytesWritten = 0;
    while (true)
    {
        int read = HttpWResp.GetResponseStream().Read(buffer, 0, buffer.Length);
        if (read <= 0)
            break;
        httpResponse.OutputStream.Write(buffer, 0, read);
        bytesWritten += read;
    }
}

HttpListenerResponse和ContentLength64属性的无限值

1 个答案: