Question

我正在用C＃做一个嵌入式项目，我已经编写了一个基于套接字的Web服务器。一切都运作良好，除了我不能为我的生活得到请求的身体。 Content-Length表示有12个字符，但socket.Recieve方法只获取标题。

while (true)
{

    using (Socket clientSocket = listeningSocket.Accept())
    {
        IPEndPoint clientIP = clientSocket.RemoteEndPoint as IPEndPoint;
        Debug.Print("Received request from " + clientIP.ToString());
        var x = clientSocket.RemoteEndPoint;

        int availableBytes = clientSocket.Available;

        Debug.Print(DateTime.Now.ToString() + " " + availableBytes.ToString() + " request bytes available");

        int bytesReceived = (availableBytes > maxRequestSize ? maxRequestSize : availableBytes);
        if (bytesReceived > 0)
        {
            byte[] buffer = new byte[bytesReceived]; // Buffer probably should be larger than this.
            int readByteCount = clientSocket.Receive(buffer, bytesReceived, SocketFlags.None);

            using (Request r = new Request(clientSocket, Encoding.UTF8.GetChars(buffer)))
            {
                Debug.Print(DateTime.Now.ToString() + " " + r.URL);
                if (requestReceived != null) requestReceived(r);

            }


        }
    }
    Thread.Sleep(10);
}

availableBytes = 499

bytesReceived = 499

readByteCount = 487（短12个字符）

我在这里缺少什么？如果有任何不同，正文是多部分表单数据。

Answer 1

int bytesReceived = (availableBytes > maxRequestSize ? maxRequestSize : availableBytes);

如果maxRequestSize为487，那么您将获得您描述的结果。

还要记住Content-Length不是字节 - 它是八位字节：What's the "Content-Length" field in HTTP header?（好的我是迂腐的 - 八位字节是8位;）

Answer 2

我想知道Available属性有多可靠。它看起来只对非阻塞套接字有用，然后只作为一个布尔标志表示某些东西可用。

为什么不在循环中读取流来解析消息呢？

.NET套接字Web服务器HTTP POST请求正文

2 个答案: