Question

我目前正在开发一个需要使用TCP或Socket连接的项目。因为我给了一个URL让我连接到它，服务器会将数据推送给我。

指定的网址为http://member.sugacane.com/userInfo?userid=2&token=SomeToken

我通过MSDN（http://msdn.microsoft.com/en-us/library/kb5kfec7.aspx）并获取一些示例代码来处理它。

public static void StartClient(string Host, string token, int userID, int port)
        {
            Host = "member.sugacane.com";
            string Datamsg = "userid=2&token=SomeToken";
            // Data buffer for incoming data.
            byte[] bytes = new byte[1024];


            try
            {

                //  uses port 80.
                IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostEntry(Host).HostName); 
                IPAddress ipAddress = ipHostInfo.AddressList[0];
                IPEndPoint remoteEP = new IPEndPoint(ipAddress, port); 

                // Create a TCP/IP  socket.
                Socket sender = new Socket(AddressFamily.InterNetwork,
                    SocketType.Stream, ProtocolType.Tcp);

                // Connect the socket to the remote endpoint. Catch any errors.
                try
                {
                    sender.Connect(remoteEP);

                    Console.WriteLine("Socket connected to {0}",
                        sender.RemoteEndPoint.ToString());
                    string isConnect = "Socket connected to {0}" +sender.RemoteEndPoint.ToString();

                    // Encode the data string into a byte array.
                    byte[] msg = Encoding.ASCII.GetBytes(Datamsg);

                    // Send the data through the socket.
                    int bytesSent = sender.Send(msg);

                    // Receive the response from the remote device.
                    int bytesRec = sender.Receive(bytes);
                    string res = Encoding.ASCII.GetString(bytes, 0, bytesRec);
                    Console.WriteLine("Echoed test = {0}", Encoding.ASCII.GetString(bytes, 0, bytesRec));

                    // Release the socket.
                    sender.Shutdown(SocketShutdown.Both);
                    sender.Close();

                }
                catch (ArgumentNullException ane)
                {
                    Console.WriteLine("ArgumentNullException : {0}", ane.ToString());
                }
                catch (SocketException se)
                {
                    Console.WriteLine("SocketException : {0}", se.ToString());
                }
                catch (Exception e)
                {
                    Console.WriteLine("Unexpected exception : {0}", e.ToString());
                }

            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }
        }

我能够使用此代码连接到服务器，但我无法得到任何响应，字节始终为0，它应该返回一些XML数据。我想知道我发错了Datamsg

Answer 1

您应该使用http协议。检查维基百科文章中的示例会话：http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol。仅发送网址不足以让服务器做出响应。

看起来像这样：

REQUEST：

GET /index.html HTTP/1.1
Host: www.example.com

响应：

HTTP/1.1 200 OK
Date: Mon, 23 May 2005 22:38:34 GMT
Server: Apache/1.3.3.7 (Unix) (Red-Hat/Linux)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
Etag: "3f80f-1b6-3e1cb03b"
Content-Type: text/html; charset=UTF-8
Content-Length: 131
Connection: close

<html>
<head>
  <title>An Example Page</title>
</head>
<body>
  Hello World, this is a very simple HTML document.
</body>
</html>

您可以使用telnet检查您尝试发送的邮件是否正确。另一个选择是将您的链接粘贴到浏览器中，并使用Fiddler或Wireshark检查发送到服务器的内容。

<强>更新

例如，如果您更改代码的第一行，则应该从维基百科获得响应：

Host = "en.wikipedia.org";
string Datamsg = @"GET /wiki/Main_Page HTTP/1.1
Host: en.wikipedia.org

";

所以你的代码应该是这样的（我要离开你应该放置有效令牌的部分等）：

Host = "member.sugacane.com";
string Datamsg = @"GET /userInfo?userid=2&token=SomeToken HTTP/1.1
Host: member.sugacane.com

";

Answer 2

我想知道我发错了Datamsg

如果您要连接的服务器是HTTP服务器，那么是，您发送的请求不正确。为此，请使用HttpClient或HttpWebRequest等库。

如何将URL参数发送到套接字连接

2 个答案: