c# socket編程實現udp用戶端

c# socket編程實現udp用戶端

 這篇文章主要介紹了c# socket編程實現udp用戶端，大家參考使用吧

代碼如下:

Console.WriteLine("This is a Client, host name is {0}", Dns.GetHostName());

//設定服務端終結點

IPEndPoint ipe = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8001);

//建立與服務端串連的通訊端，指定網路類型，資料連線類型和網路通訊協定

Socket ConnSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

string welcome = "Client Message:Hello!!!";

byte[] data = new byte[1024];

data = Encoding.ASCII.GetBytes(welcome);

//給服務端發送測試訊息

ConnSocket.SendTo(data, data.Length, SocketFlags.None, ipe);

IPEndPoint server = new IPEndPoint(IPAddress.Any, 0);

//服務端終結點

EndPoint Remote = (EndPoint)server;

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 = ConnSocket.ReceiveFrom(data, ref Remote);

//列印從服務端發回的資訊

Console.WriteLine("Message received from {0}: ", Remote.ToString());

Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));

while (true) //可以即時給服務端發送訊息

{

    string input = Console.ReadLine();

    if (input == "exit") //中斷串連

    {

        ConnSocket.SendTo(Encoding.ASCII.GetBytes(input), Remote);

        data = new byte[1024];

        recv = ConnSocket.ReceiveFrom(data, ref Remote);

        Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));

        break;

    }

    else

    {

        ConnSocket.SendTo(Encoding.ASCII.GetBytes("Client Message:" + input), Remote);

        data = new byte[1024];

        recv = ConnSocket.ReceiveFrom(data, ref Remote);

        Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));

    }

}

Console.WriteLine("Stopping Client.");

ConnSocket.Close();