伺服器端:
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
namespace UDPServer
{
class Program
{
static void Main(string[] args)
{
int recv;
byte[] data = new byte[1024];
//構建TCP 伺服器
//得到本機IP,設定TCP連接埠號碼
IPEndPoint ipep = new IPEndPoint(IPAddress.Any , 8001);
Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram , ProtocolType.Udp);
//綁定網路地址
newsock.Bind(ipep);
Console.WriteLine("This is a Server, host name is {0}",Dns.GetHostName());
//等待客戶機串連
Console.WriteLine("Waiting for a client");
//得到客戶機IP
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)(sender);
recv = newsock.ReceiveFrom(data, ref Remote);
Console .WriteLine ("Message received from {0}: ", Remote.ToString ());
Console .WriteLine (Encoding .ASCII .GetString (data ,0,recv ));
//客戶機串連成功後,發送歡迎資訊
string welcome = "Welcome ! ";
//字串與位元組數組相互轉換
data = Encoding .ASCII .GetBytes (welcome );
//發送資訊
newsock .SendTo (data ,data.Length ,SocketFlags .None ,Remote );
while (true )
{
data =new byte [1024];
//發送接受資訊
recv =newsock.ReceiveFrom(data ,ref Remote);
Console .WriteLine (Encoding .ASCII .GetString (data ,0,recv));
newsock .SendTo (data ,recv ,SocketFlags .None ,Remote );
}
}
}
}
用戶端:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
namespace UDPClient
{
class Program
{
static void Main(string[] args)
{
byte[] data = new byte[1024];
string input ,stringData;
//構建TCP 伺服器
Console.WriteLine("This is a Client, host name is {0}", Dns.GetHostName());
//設定服務IP,設定TCP連接埠號碼
IPEndPoint ipep = new IPEndPoint(IPAddress .Parse ("127.0.0.1") , 8001);
//定義網路類型,資料連線類型和網路通訊協定UDP
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
string welcome = "Hello! ";
data = Encoding.ASCII.GetBytes(welcome);
server.SendTo(data, data.Length, SocketFlags.None, ipep);
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)sender;
data = new byte[1024];
//對於不存在的IP地址,加入此行代碼後,可以在指定時間內解除阻塞模式限制
//server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 100);
int recv = server.ReceiveFrom(data, ref Remote);
Console.WriteLine("Message received from {0}: ", Remote.ToString());
Console.WriteLine(Encoding .ASCII .GetString (data,0,recv));
while (true)
{
input = Console .ReadLine ();
if (input =="exit")
break ;
server .SendTo (Encoding .ASCII .GetBytes (input ),Remote );
data = new byte [1024];
recv = server.ReceiveFrom(data, ref Remote);
stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine(stringData);
}
Console .WriteLine ("Stopping Client.");
server .Close ();
}
}
}