CODE:

/*++

UdpReceiver

--*/

#include <stdio.h>

#include "winsock2.h"



#pragma comment(lib, "ws2_32")



void main() 

{

WSADATA wsaData;

SOCKET RecvSocket;

sockaddr_in RecvAddr;

int Port = 5555;

char RecvBuf[1024];

int BufLen = 1024;

sockaddr_in SenderAddr;

int SenderAddrSize = sizeof(SenderAddr);



//-----------------------------------------------

// Initialize Winsock

WSAStartup(MAKEWORD(2,2), &wsaData);



//-----------------------------------------------

// Create a receiver socket to receive datagrams

RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);



//-----------------------------------------------

// Bind the socket to any address and the specified port.

RecvAddr.sin_family = AF_INET;

RecvAddr.sin_port = htons(Port);

RecvAddr.sin_addr.s_addr = htonl(INADDR_ANY);



bind(RecvSocket, (SOCKADDR *) &RecvAddr, sizeof(RecvAddr));



//-----------------------------------------------

// Call the recvfrom function to receive datagrams

// on the bound socket.

printf("Receiving datagrams...\n");

while(1)

{

  recvfrom(RecvSocket, 

    RecvBuf, 

    BufLen, 

    0, 

    (SOCKADDR *)&SenderAddr, 

    &SenderAddrSize);

  printf("%s\n", RecvBuf);

}



//-----------------------------------------------

// Close the socket when finished receiving datagrams

printf("Finished receiving. Closing socket.\n");

closesocket(RecvSocket);



//-----------------------------------------------

// Clean up and exit.

printf("Exiting.\n");

WSACleanup();

return;

}

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