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我正在使用简单的客户端服务器应用程序,它就像聊天信使。 我正在使用客户端服务器方法。我的应用程序在LAN局域网上工作正常,但是当它尝试通信以切断局域网时。然后对客户没有回应。而我知道服务器IP地址(通过外部方式),它使用宽带连接并驻留在WAN上。 我想我无法解析IP地址,或发生代理问题。 任何人都可以帮我吗? 关心! Sm.Abdullah无法使用客户端服务器方法通过广域网与服务器连接?
//
/* Server Program */
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
public class serv {
public static void Main() {
try {
IPAddress ipAd = IPAddress.Parse("172.21.5.99");
// use local m/c IP address, and
// use the same in the client
/* Initializes the Listener */
TcpListener myList=new TcpListener(ipAd,8001);
/* Start Listeneting at the specified port */
myList.Start();
Console.WriteLine("The server is running at port 8001...");
Console.WriteLine("The local End point is :" +
myList.LocalEndpoint);
Console.WriteLine("Waiting for a connection.....");
Socket s=myList.AcceptSocket();
Console.WriteLine("Connection accepted from " + s.RemoteEndPoint);
byte[] b=new byte[100];
int k=s.Receive(b);
Console.WriteLine("Recieved...");
for (int i=0;i<k;i++)
Console.Write(Convert.ToChar(b[i]));
ASCIIEncoding asen=new ASCIIEncoding();
s.Send(asen.GetBytes("The string was recieved by the server."));
Console.WriteLine("\nSent Acknowledgement");
/* clean up */
s.Close();
myList.Stop();
}
catch (Exception e) {
Console.WriteLine("Error..... " + e.StackTrace);
}
}
}
---------------------------------------------------------------------------
/* Client Program */
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Sockets;
public class clnt {
public static void Main() {
try {
TcpClient tcpclnt = new TcpClient();
Console.WriteLine("Connecting.....");
// here is local ip..
// if i replace it with WAN IP it does not communicate.
tcpclnt.Connect("172.21.5.99",8001);
// use the ipaddress as in the server program
Console.WriteLine("Connected");
Console.Write("Enter the string to be transmitted : ");
String str=Console.ReadLine();
Stream stm = tcpclnt.GetStream();
ASCIIEncoding asen= new ASCIIEncoding();
byte[] ba=asen.GetBytes(str);
Console.WriteLine("Transmitting.....");
stm.Write(ba,0,ba.Length);
byte[] bb=new byte[100];
int k=stm.Read(bb,0,100);
for (int i=0;i<k;i++)
Console.Write(Convert.ToChar(bb[i]));
tcpclnt.Close();
}
catch (Exception e) {
Console.WriteLine("Error..... " + e.StackTrace);
}
}
}
也许您的服务器端口被防火墙阻止。 – alex 2013-04-05 13:26:17
不是。让我更具体。 服务器驻留在具有相同公用IP或WAN IP的所有计算机的LAN上,因为它们与同一调制解调器连接。在这种情况下,客户端将如何与服务器进行通信? – 2013-04-05 13:32:58