Client

#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif

#include <iostream>
#include <fstream>
#include <Windows.h>

#include <WinSock2.h>
#include <WS2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>

using namespace std;

#pragma comment(lib, "Ws2_32.lib")


#define PORT_NUMBER 1337

#define SERVER_ADDRESS "localhost"
#define BUFFER_LENGTH 500

int ShowError();

int main()
{

	WSADATA wsaData;

	int Result;

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

	if (Result != 0)
	{
		WSACleanup();
		return ShowError();
	}

	SOCKET ClientSocket = INVALID_SOCKET;

	ClientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	if (ClientSocket == INVALID_SOCKET)
	{
		WSACleanup();
		return ShowError();
	}

	struct hostent* host;

	host = gethostbyname(SERVER_ADDRESS);

	if (host == 0)
	{
		WSACleanup();
		return ShowError();
	}

	SOCKADDR_IN SockAddr;

	SockAddr.sin_family = AF_INET;
	SockAddr.sin_port = htons(PORT_NUMBER);

	unsigned long* address = (unsigned long*)host->h_addr;

	SockAddr.sin_addr.s_addr = *address;



	Result = connect(ClientSocket, (SOCKADDR*)&SockAddr, sizeof(SockAddr));

	if (Result == SOCKET_ERROR)
	{
		WSACleanup();
		return ShowError();
	}


	char ReceiveBuffer[BUFFER_LENGTH];
    memset(ReceiveBuffer, 0, BUFFER_LENGTH-1);

	int length = BUFFER_LENGTH;

	int bReceived = 0; //bytes received

	do
	{
		bReceived = recv(ClientSocket, ReceiveBuffer, length, 0);

		if (bReceived > 0)
		{
		    printf("\n\nBytes Received: %d\n", bReceived);
	        printf("Received Buffer: %s\n", ReceiveBuffer);
		}

	} while (bReceived > 0);


	printf("Closing connection...\n\n");

	shutdown(ClientSocket, SD_SEND);

	closesocket(ClientSocket);

	WSACleanup();

	system("PAUSE > NUL");

	return 0;
}


int ShowError()
{
	MessageBox(NULL, "An error occured.", 0, 0);
	return 1;
}