po cw 8

//**********************************************
//* client_main.cpp
//**********************************************
#include <iostream>
#include "Client.h"
#include <string>

//CLIENrt
using namespace std;

int main()
{

    Client c("localhost");

    char bufor[DEFAULT_BUFLEN];

    string stuff = "";
    do {
        cout << "send stuff: ";
        cin >> stuff;

        memcpy(bufor, stuff.c_str(), stuff.size() + 1); // overflow

        c.sen(bufor);

        memcpy(bufor, "deadbeefdeadbeef", strlen("deadbeefdeadbeef") + 1);

        int btz = c.rec(bufor);
        cout << "\n[receiving " << btz << "bytes.] : " << bufor << endl;




    } while (stuff != "Q");



    //cout << "Listening for client ... " <<endl;
    //cout << "Ret Code: " << s.acc() << endl;


    cout << "KONIETZ";

    system("pause");

    return 0;

}




//**********************************************
//* Client.h
//**********************************************
#pragma once

#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iostream>

#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "Mswsock.lib")
#pragma comment (lib, "AdvApi32.lib")

#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "6666"


using namespace std;

class Client
{
protected:
    WSADATA wsaData;
    SOCKET ConnectSocket;
    int iResult;

public:
    Client(const char * addr);
    ~Client(void);

    int sen(char * sendbuf);
    int rec(char * recvbuf);
};







//**********************************************
//* Client.cpp
//**********************************************
#include "Client.h"

Client::Client(const char * addr)
{

    iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
    if (iResult != 0) {
        cout << "wsastartup failed" << endl;
    }

    struct addrinfo *result = NULL,
                    *ptr = NULL,
                    hints;
    ZeroMemory( &hints, sizeof(hints) );
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_protocol = IPPROTO_TCP;

    iResult = getaddrinfo(addr, DEFAULT_PORT, &hints, &result);
    if ( iResult != 0 ) {
        WSACleanup();
        cout << "getaddrinfo failed" << endl;
    }


   // Attempt to connect to an address until one succeeds
    for(ptr=result; ptr != NULL ;ptr=ptr->ai_next) {

        // Create a SOCKET for connecting to server
        ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype,
            ptr->ai_protocol);
        if (ConnectSocket == INVALID_SOCKET) {

            WSACleanup();
            cout << "connect socket create failed" << endl;
        }

        // Connect to server.
        iResult = connect( ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
        if (iResult == SOCKET_ERROR) {
            closesocket(ConnectSocket);
            ConnectSocket = INVALID_SOCKET;
            continue;
        }
        break;
    }

    freeaddrinfo(result);

    if (ConnectSocket == INVALID_SOCKET) {
        WSACleanup();
        cout << "connect failed" << endl;
    }

}

Client::~Client(void)
{
        // shutdown the connection since no more data will be sent
    iResult = shutdown(ConnectSocket, SD_SEND);
    if (iResult == SOCKET_ERROR) {
        cout << "shutdown failed with error: "<< WSAGetLastError()<< endl;
        closesocket(ConnectSocket);
        WSACleanup();

    }
}



int Client::sen(char * sendbuf)
{

    // Send an initial buffer
    iResult = send( ConnectSocket, sendbuf, (int)strlen(sendbuf) + 1, 0 );
    if (iResult == SOCKET_ERROR) {
        cout << "send failed with error: " <<WSAGetLastError() << endl;
        closesocket(ConnectSocket);
        WSACleanup();
        return -1;
    }

    cout << "Bytes Sent: " <<  iResult;





    return 0;
}

int Client::rec(char * recvbuf)
{


    return recv(ConnectSocket, recvbuf, DEFAULT_BUFLEN, 0);


    return 0;
}






//**********************************************
//* server_main.cpp
//**********************************************
#include <iostream>
#include "Server.h"
//SERVER
using namespace std;

int main()
{

    Server s;

    s.run();

    system("pause");

    return 0;

}




//**********************************************
//* Server.h
//**********************************************
#pragma once

#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iostream>

#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "Mswsock.lib")
#pragma comment (lib, "AdvApi32.lib")

#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "6666"

using namespace std;

class Server
{
protected:
    WSADATA wsaData;
    int iResult;

    SOCKET ListenSocket;
    SOCKET ClientSocket;
    struct addrinfo *result;

public:
    Server(void);
    ~Server(void);
    int acc(void); // accept
    int echo();
    void shtd(); // shutdown
    void run();

};





//**********************************************
//* Server.cpp
//**********************************************
#include "Server.h"




Server::Server(void)
{
    ListenSocket = INVALID_SOCKET;
    ClientSocket = INVALID_SOCKET;


    result = NULL;
    struct addrinfo hints;


    // Initialize Winsock
    iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
    if (iResult != 0) {
        cout << "wsa startup failed" <<endl;
    }

    ZeroMemory(&hints, sizeof(hints));
    hints.ai_family = AF_INET;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_protocol = IPPROTO_TCP;
    hints.ai_flags = AI_PASSIVE;

    // Resolve the server address and port
    iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
    if ( iResult != 0 ) {
        WSACleanup();
        cout << "getaddr info failed" <<endl;
    }

    // Create a SOCKET for connecting to server
    ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
    if (ListenSocket == INVALID_SOCKET) {
        freeaddrinfo(result);
        WSACleanup();
        cout << "listen socket create failed" <<endl;
    }

    // Setup the TCP listening socket
    iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen);
    if (iResult == SOCKET_ERROR) {
        freeaddrinfo(result);
        closesocket(ListenSocket);
        WSACleanup();
        cout << "bind failed" <<endl;
    }

    freeaddrinfo(result);

}

Server::~Server(void)
{

    closesocket(ListenSocket);
    closesocket(ClientSocket);
    WSACleanup();

}


int Server::acc(void)
{

    iResult = listen(ListenSocket, SOMAXCONN);
    if (iResult == SOCKET_ERROR) {
        closesocket(ListenSocket);
        WSACleanup();
        return -5;
    }

    // Accept a client socket
    ClientSocket = accept(ListenSocket, NULL, NULL);
    if (ClientSocket == INVALID_SOCKET) {
        closesocket(ListenSocket);
        WSACleanup();
        return -6;
    }

    return 0;

}

void Server::run()
{

    int echoRet = 1;
    do {
        cout << "Listening for client ... " <<endl;
        cout << "Client connect ret code: " << acc() << endl;
        do {
            echoRet = echo();
            cout << "Echoing " << echoRet << "bytes"<<endl;
        } while(echoRet > 0);

    } while(echoRet >= 0);

    cout << "shutting down";
    shtd();



}

int Server::echo() // 0 - rozlaczenie klienta -1 - shutdown >0 - ilosc przeslanych bajtow
{
    int iSendResult;
    char recvbuf[DEFAULT_BUFLEN];

    iResult = recv(ClientSocket, recvbuf, DEFAULT_BUFLEN, 0);
    if (iResult > 0) {
        //cout << "Bytes received: %d\n"<<iResult;

        if (strcmp(recvbuf, "shutdown") == 0) {
            return -1;
        }


    // Echo the buffer back to the sender
        iSendResult = send( ClientSocket, recvbuf, iResult, 0 );
        if (iSendResult == SOCKET_ERROR) {
            return 0;
        }
        return iResult;
    }
    else if (iResult == 0)
        return 0;
    else  {
        return 0;
    }




}

void Server::shtd()
{
    iResult = shutdown(ClientSocket, SD_SEND);
    if (iResult == SOCKET_ERROR) {
        cout << "shutdown failed with error: " << WSAGetLastError() << endl;
        closesocket(ClientSocket);
        WSACleanup();
    }

}