基于Udp协议是无连接模式通讯,占用资源少,响应速度快,延时低。至于可靠性,可通过应用层的控制来满足。(不可靠连接)
(1).建立一个套接字(Socket)
(2).绑定服务器端IP地址及端口号--服务器端
(3).通过SendTo()方法向指定主机发送消息
(需提供主机IP地址及端口)
(4).通过ReciveFrom()方法接收指定主机发送的消息
(需提供主机IP地址及端口)
服务端:
class Program
{
private static Socket udpServer;
static void Main(string[] args)
{
//1,创建socket
udpServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
//2,绑定ip跟端口号
udpServer.Bind(new IPEndPoint(IPAddress.Parse("192.168.0.101"), 7788));
//3,接收数据
new Thread(ReceiveMessage) { IsBackground = true }.Start();
//udpServer.Close();
Console.ReadKey();
}
static void ReceiveMessage()
{
while (true)
{
EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
byte[] data = new byte[1024];
int length = udpServer.ReceiveFrom(data, ref remoteEndPoint);//这个方法会把数据的来源(ip:port)放到第二个参数上
string message = Encoding.UTF8.GetString(data, 0, length);
Console.WriteLine("从ip:" + (remoteEndPoint as IPEndPoint).Address.ToString() + ":" + (remoteEndPoint as IPEndPoint).Port + "收到了数据:" + message);
}
}
}
客户端:
class Program
{
static void Main(string[] args)
{
//创建socket
Socket udpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
while (true)
{
//发送数据
EndPoint serverPoint = new IPEndPoint(IPAddress.Parse("192.168.0.101"), 7788);
string message = Console.ReadLine();
byte[] data = Encoding.UTF8.GetBytes(message);
udpClient.SendTo(data, serverPoint);
}
udpClient.Close();
Console.ReadKey();
}
}