5)Клиент - Сервер

// Client.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "Client.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// The one and only application object

CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;

	HMODULE hModule = ::GetModuleHandle(NULL);

	if (hModule != NULL)
	{
		// initialize MFC and print and error on failure
		if (!AfxWinInit(hModule, NULL, ::GetCommandLine(), 0))
		{
			// TODO: change error code to suit your needs
			_tprintf(_T("Fatal Error: MFC initialization failed\n"));
			nRetCode = 1;
		}
		else
		{
			WSADATA wsaData; 
			WSAStartup(MAKEWORD(2,2), &wsaData);
			if (!AfxSocketInit(&wsaData))
			{
				AfxMessageBox(CString("Error Unit"));
				return GetLastError();
			}

			CSocket ClientSocket;
			UINT port = 12345;

			ClientSocket.Create();

			SOCKADDR_IN sin;
			LPHOSTENT hostEnt;
 
			hostEnt = gethostbyname("localhost");
 
			if(!hostEnt)
			{
				printf("Unable to collect gethostbyname\n");
				WSACleanup();
				return 1;
			}

			sin.sin_family = PF_INET;
			sin.sin_port = htons(port);
			sin.sin_addr = *((LPIN_ADDR)*hostEnt->h_addr_list);
			
			ClientSocket.Connect((SOCKADDR*)(&sin), sizeof(sin));

			char MessageBuffer[1024] = {0};

			std::cout << "Input: ";
			gets_s(MessageBuffer, sizeof(char)*1024);

			ClientSocket.Send(MessageBuffer, 1024);

			char ReceiveBuffer[1024] = {0};
			ClientSocket.Receive(ReceiveBuffer, sizeof(char)*1024, 0);

			std::cout << "Message from server: " << ReceiveBuffer << std::endl;

			ClientSocket.Close();

			WSACleanup();

			_getch();
		}
	}
	else
	{
		// TODO: change error code to suit your needs
		_tprintf(_T("Fatal Error: GetModuleHandle failed\n"));
		nRetCode = 1;
	}

	return nRetCode;
}



// Server.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "Server.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

UINT __cdecl Server(LPVOID);
// The one and only application object

unsigned int ClientCount = 0;
CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;

	HMODULE hModule = ::GetModuleHandle(NULL);

	if (hModule != NULL)
	{
		// initialize MFC and print and error on failure
		if (!AfxWinInit(hModule, NULL, ::GetCommandLine(), 0))
		{
			// TODO: change error code to suit your needs
			_tprintf(_T("Fatal Error: MFC initialization failed\n"));
			nRetCode = 1;
		}
		else
		{
			WSADATA wsaData; 
			WSAStartup(MAKEWORD(2,2), &wsaData);
			if (!AfxSocketInit(&wsaData))
			{
				AfxMessageBox(CString("Error Unit"));
				return GetLastError();
			}
			
			CSocket ServerSocket;
			UINT port = 12345;

			ServerSocket.Create(port);

			SOCKADDR_IN sin;
			sin.sin_family = PF_INET;
			sin.sin_port = htons(port);
			sin.sin_addr.S_un.S_addr = INADDR_ANY;

			ServerSocket.Bind((SOCKADDR*)(&sin), sizeof(sin));

			ServerSocket.Listen(3);

			while (TRUE)
			{
				CWinThread* thread = new CWinThread();
				thread = AfxBeginThread(&Server, (LPVOID)ServerSocket.m_hSocket);
				::WaitForSingleObject(thread->m_hThread, INFINITE);
			}

			ServerSocket.Close();

			WSACleanup();
			
			_getch();
		}
	}
	else
	{
		// TODO: change error code to suit your needs
		_tprintf(_T("Fatal Error: GetModuleHandle failed\n"));
		nRetCode = 1;
	}

	return nRetCode;
}

UINT __cdecl Server(LPVOID pParam)
{
	CSocket ClientSocket;
	CSocket ServerSocket;

	ServerSocket.Attach((SOCKET)pParam);
	ServerSocket.Accept(ClientSocket, NULL, NULL);

	char MessageBuffer[1024] = {0};
	ClientSocket.Receive(MessageBuffer, sizeof(char)*1024, 0);

	std::cout << "Message from #" << ++ClientCount << " client: " << MessageBuffer << std::endl;

	ClientSocket.Send(MessageBuffer, sizeof(char)*1024, 0);

	ClientSocket.Close();
	
	AfxEndThread(0, TRUE);

	return 0;
}