服务器端口号

Question

我现在使用默认端口号TcpListener serverSocket = new TcpListener(9999); ，但因为在我的客户端，我已经把一个文本框，以允许用户手动键入端口号。那么，如何让我的服务器端，允许端口号从端口1至9999，而不是

using System; 
using System.Threading; 
using System.Net.Sockets; 
using System.Text; 
using System.Collections; 

namespace ConsoleApplication1 
{ 
    class Program 
    { 
    public static Hashtable clientsList = new Hashtable(); 

    static void Main(string[] args) 
    { 
     TcpListener serverSocket = new TcpListener(9999); 
     TcpClient clientSocket = default(TcpClient); 
     int counter = 0; 

     serverSocket.Start(); 
     Console.WriteLine("Welcome to NYP Chat Server "); 
     counter = 0; 
     while ((true)) 
     { 
      counter += 1; 
      clientSocket = serverSocket.AcceptTcpClient(); 

      byte[] bytesFrom = new byte[10025]; 
      string dataFromClient = null; 

      NetworkStream networkStream = clientSocket.GetStream(); 
      networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize); 
      dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom); 
      dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("$")); 

      clientsList.Add(dataFromClient, clientSocket); 

      broadcast(dataFromClient + " Connected ", dataFromClient, false); 

      Console.WriteLine(dataFromClient + " has join the chat room "); 
      handleClinet client = new handleClinet(); 
      client.startClient(clientSocket, dataFromClient, clientsList); 
     } 

     clientSocket.Close(); 
     serverSocket.Stop(); 
     Console.WriteLine("exit"); 
     Console.ReadLine(); 
    } 

    public static void broadcast(string msg, string uName, bool flag) 
    { 
     foreach (DictionaryEntry Item in clientsList) 
     { 
      TcpClient broadcastSocket; 
      broadcastSocket = (TcpClient)Item.Value; 
      NetworkStream broadcastStream = broadcastSocket.GetStream(); 
      Byte[] broadcastBytes = null; 

      if (flag == true) 
      { 
       broadcastBytes = Encoding.ASCII.GetBytes(uName + " says : " + msg); 
      } 
      else 
      { 
       broadcastBytes = Encoding.ASCII.GetBytes(msg); 
      } 

      broadcastStream.Write(broadcastBytes, 0, broadcastBytes.Length); 
      broadcastStream.Flush(); 
     } 
    } //end broadcast function 
}//end Main class 


public class handleClinet 
{ 
    TcpClient clientSocket; 
    string clNo; 
    Hashtable clientsList; 

    public void startClient(TcpClient inClientSocket, string clineNo, Hashtable cList) 
    { 
     this.clientSocket = inClientSocket; 
     this.clNo = clineNo; 
     this.clientsList = cList; 
     Thread ctThread = new Thread(doChat); 
     ctThread.Start(); 
    } 

    private void doChat() 
    { 
     int requestCount = 0; 
     byte[] bytesFrom = new byte[10025]; 
     string dataFromClient = null; 
     Byte[] sendBytes = null; 
     string serverResponse = null; 
     string rCount = null; 
     requestCount = 0; 

     while ((true)) 
     { 
      try 
      { 
       requestCount = requestCount + 1; 
       NetworkStream networkStream = clientSocket.GetStream(); 
       networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize); 
       dataFromClient = System.Text.Encoding.ASCII.GetString(bytesFrom); 
       dataFromClient = dataFromClient.Substring(0, dataFromClient.IndexOf("$")); 
       Console.WriteLine("From client - " + clNo + " : " + dataFromClient); 
       rCount = Convert.ToString(requestCount); 

       Program.broadcast(dataFromClient, clNo, true); 
      } 
      catch (Exception ex) 
      { 
       Console.WriteLine(ex.ToString()); 
      } 
     }//end while 
    }//end doChat 
    } //end class handleClinet 
}//end namespace 

Answer 1

设置添加到您的程序，这样就可以更改端口...

项目属性 - >设置选项卡 - >创建一个名为PORTNUMBER Int32类型的设置，与9999

默认值在代码中，有Properties.Settings.Default.PortNumber

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编辑检索值：我误解了这个问题。你想同时听1到9999的所有端口吗？它没有任何意义，因为

1. 在这个范围内许多港口都已经被其他进程
2. 你不需要听这么多的端口上，...

如果你担心有多个用户同时连接，这不是一个问题：只使用一个新的线程来处理每个传入的连接，并在主线程上的听众再次呼吁AcceptTcpClient。

Answer 2

你通常没有一个单一的服务器侦听多个端口;这很奇怪。你所做的是接受连接，然后将它们传递给另一个线程进行处理，然后返回到接受更多连接。

Answer 3

最好的办法是使通过application configuration file自定义的端口号。 这将允许服务器更改端口而无需重新编译。

至于代码的话，你只需要设置的端口用在这里：

TcpListener serverSocket = new TcpListener(portFromAppConfig); 

而且，你不应该使用的端口低于1024 - 这些被保留端口的系统服务。你应该坚持更高范围的数字（一般来说）端口。