UDPでデータの受信を行う方法

作って覚えるVisual C# 2013 デスクトップアプリ入門

UDPでデータの送受信を行う方法
【データ受信方法】
VB.NET

Public Class UdpReceiver
    Public Shared Sub Main()
        Dim localIpString As String = "127.0.0.1"
        Dim localAddress As System.Net.IPAddress = _
            System.Net.IPAddress.Parse(localIpString)
        Dim localPort As Integer = 8001

        Dim localEP As New System.Net.IPEndPoint(localAddress, localPort)
        Dim udp As New System.Net.Sockets.UdpClient(localEP)

        While True
            Dim remoteEP As System.Net.IPEndPoint = Nothing
            Dim rcvBytes As Byte() = udp.Receive(remoteEP)

            Dim rcvMsg As String = System.Text.Encoding.UTF8.GetString(rcvBytes)

            Console.WriteLine("受信したデータ:{0}", rcvMsg)
            Console.WriteLine("送信元アドレス:{0}/ポート番号:{1}", _
                              remoteEP.Address, remoteEP.Port)

            If rcvMsg.Equals("exit") Then
                Exit While
            End If
        End While

        udp.Close()

        Console.WriteLine("終了しました。")
        Console.ReadLine()
    End Sub
End Class

作って覚えるVisual C# 2013 デスクトップアプリ入門

C#

using System;

public class UdpReceiver
{
    static void Main()
    {
        string localIpString = "127.0.0.1";
        System.Net.IPAddress localAddress =
            System.Net.IPAddress.Parse(localIpString);
        int localPort = 8001;

        System.Net.IPEndPoint localEP =
            new System.Net.IPEndPoint(localAddress, localPort);
        System.Net.Sockets.UdpClient udp =
            new System.Net.Sockets.UdpClient(localEP);

        for (; ; )
        {
            System.Net.IPEndPoint remoteEP = null;
            byte[] rcvBytes = udp.Receive(ref remoteEP);

            string rcvMsg = System.Text.Encoding.UTF8.GetString(rcvBytes);

            Console.WriteLine("受信したデータ:{0}", rcvMsg);
            Console.WriteLine("送信元アドレス:{0}/ポート番号:{1}",
                remoteEP.Address, remoteEP.Port);

            if (rcvMsg.Equals("exit"))
            {
                break;
            }
        }

        udp.Close();

        Console.WriteLine("終了しました。");
        Console.ReadLine();
    }
}

作って覚えるVisual C# 2013 デスクトップアプリ入門