SERVER SOCKET - NDDCoder

Fork

int kt;
Socket sk = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint serverInfo = new IPEndPoint(IPAddress.Any, 9000);
sk.Bind(serverInfo);

IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)(sender);

byte[] dl = new byte[1024];
Console.WriteLine("Waiting");
kt = sk.ReceiveFrom(dl, ref Remote);
Console.WriteLine(getString(dl, 0, kt));

string s = "Connected";
dl = getByte(s);
sk.SendTo(dl, dl.Length, SocketFlags.None, Remote);

while (true)
{
    //nhan du lieu
    try
    {
        dl = new byte[1024];
        kt = sk.ReceiveFrom(dl, ref Remote);
    }
    catch (IOException e)
    {
        Console.WriteLine("CANNOT RECEIVE DATA");
        Console.ReadLine();
        break;
    }
    s = getString(dl, 0, kt);
    if (s.Length == 0)
    {
        break;
    }
    //convert
    string[] arr = s.Split(' ');
    float sum = 0;
    foreach(string a in arr)
    {
        float f = float.Parse(a);
        sum += f;
    }
    dl = getByte("Length: " + arr.Length + ", Sum: " + sum);
    sk.SendTo(dl, dl.Length, SocketFlags.None, Remote);
    log(s);
}

public static string getString(byte[] b, int offset, int length)
        {
            return Encoding.ASCII.GetString(b, offset, length);
        }

public static byte[] getByte(string s)
        {
            return Encoding.ASCII.GetBytes(s);
        }