#include "stdafx.h"
using namespace System;
using namespace System::Net;
using namespace System::Net::Sockets;
using namespace System::Text;
void main()
{
Socket^ socket = gcnew Socket(AddressFamily::InterNetwork, SocketType::Dgram, ProtocolType::Udp);
IPEndPoint^ ipep = gcnew IPEndPoint(IPAddress::Any, 54321);
socket->Bind(ipep);
while(true)
{
array^ message = gcnew array(1024);
EndPoint^ Remote = (EndPoint^) gcnew IPEndPoint(IPAddress::Any, 0);
int recv = socket->ReceiveFrom(message, Remote);
Console::WriteLine("[{0}] {1}",
Remote->ToString(), Encoding::ASCII->GetString(message, 0, recv));
socket->SendTo(message, recv, SocketFlags::None, Remote);
}
}