学步园

今天碰见一个Case说要占掉一个端口再运行。那好，写个Socket让他一直通信，也就占用端口了：

TCP

 

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

namespace ConsoleApplication1.SocketTest
{
class SocketTCP
    {
private static void Server()
        {
int recv;
byte[] data = new byte[1024];
            IPEndPoint SerIP = new IPEndPoint(IPAddress.Any, 8888);
            Socket serSock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            serSock.Bind(SerIP);
            serSock.Listen(5);

            Console.WriteLine("Waiting the client.....");

            Socket cliSock = serSock.Accept();
            IPEndPoint CliIP = cliSock.RemoteEndPoint as IPEndPoint;
            Console.WriteLine("connect with client:" + CliIP.Address + " at port:" + CliIP.Port);
string welcome = "welcome here!";

            data = Encoding.ASCII.GetBytes(welcome);
            cliSock.Send(data, data.Length, SocketFlags.None);//发送信息
            while (true)
            {//用死循环来不断的从客户端获取信息
                data = new byte[1024];
                recv = cliSock.Receive(data);
                Console.WriteLine("recv=" + recv);
if (recv == 0)//当信息长度为0，说明客户端连接断开
                    break;
                Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
                cliSock.Send(data, recv, SocketFlags.None);
            }
            Console.WriteLine("Disconnected from" + CliIP.Address);
            cliSock.Close();
            serSock.Close();
        }

private static void client()
        {
byte[] data = new byte[1024];
            Socket Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint IP = new IPEndPoint(IPAddress.Parse("172.18.6.249"), 8888);
try
            {
                Client.Connect(IP);
            }
catch (Exception e)
            {
                Console.WriteLine("unable to connect to server");
                Console.WriteLine(e.ToString());
return;
            }

int recv = Client.Receive(data);
string strdata = Encoding.ASCII.GetString(data, 0, recv);
            Console.WriteLine(strdata);
while (true)
            {
string input = Console.ReadLine();
if (input == "exit")
break;
                Client.Send(Encoding.ASCII.GetBytes(input));
                data = new byte[1024];
                recv = Client.Receive(data);
                strdata = Encoding.ASCII.GetString(data, 0, recv);
                Console.WriteLine(strdata);
            }
            Console.WriteLine("disconnect from sercer");
            Client.Shutdown(SocketShutdown.Both);
            Client.Close();

        }
public static void Run()
        {
            Server();
new Thread(client).Start();
        }
    }
}

UDP

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace ConsoleApplication1.SocketTest
{
class SockUDP
    {
private static void client()
        {
byte[] data = new byte[1024];//定义一个数组用来做数据的缓冲区
            string input, stringData;
            IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9050);
            Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
string welcome = "Hello,are you there?";
            data = Encoding.ASCII.GetBytes(welcome);
            server.SendTo(data, data.Length, SocketFlags.None, ipep);//将数据发送到指定的终结点

            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
            EndPoint Remote = (EndPoint)sender;
            data = new byte[1024];
int recv = server.ReceiveFrom(data, ref Remote);//接受来自服务器的数据

            Console.WriteLine("Message received from{0}:", Remote.ToString());
            Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
while (true)//读取数据
            {
                input = Console.ReadLine();//从键盘读取数据
                if (input == "text")//结束标记
                {
break;
                }
                server.SendTo(Encoding.ASCII.GetBytes(input), Remote);//将数据发送到指定的终结点Remote
                data = new byte[1024];
                recv = server.ReceiveFrom(data, ref Remote);//从Remote接受数据
                stringData = Encoding.ASCII.GetString(data, 0, recv);
                Console.WriteLine(stringData);
            }
            Console.WriteLine("Stopping client");
            server.Close();

        }
private static void Server()
        {
int recv;
byte[] data = new byte[1024];
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);//定义一网络端点
            Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//定义一个Socket
            newsock.Bind(ipep);//Socket与本地的一个终结点相关联
            Console.WriteLine("Waiting for a client..");

            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);//定义要发送的计算机的地址
            EndPoint Remote = (EndPoint)(sender);//
            recv = newsock.ReceiveFrom(data, ref Remote);//接受数据           
            Console.WriteLine("Message received from{0}:", Remote.ToString());
            Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));

string welcome = "Welcome to my test server!";
            data = Encoding.ASCII.GetBytes(welcome);
            newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
while (true)
            {
                data = new byte[1024];
                recv = newsock.ReceiveFrom(data, ref Remote);
                Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
                newsock.SendTo(data, recv, SocketFlags.None, Remote);
            }
        }

public static void Run()
        {
            Server();
        }
    }
}

有时间的研究研究异步的了。。。