Client.cpp

#include <iostream>
#include "stdafx.h"
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
using namespace std;
int main(){
    cout<<"\n========= W11 sockets ==========\n";
    SOCKET clientSocket;
    int port = 5555;
    WSADATA wsaData;
    int wsaerr;
    WORD wVersionRequested = MAKEWORD(2,2);
    wsaerr = WSAStartup(wVersionRequested, &wsaData);
    if(wsaerr!=0){
        cout<<"The winsock dll not found"<<endl;
        return 0;
    }
    else{
        cout<<"The winsock dll found!"<<endl;
        cout<<"The status: "<<wsaData.szSystemStatus<<endl;
    }
    cout<<"\n==============CLIENT==============\n";
    clientSocket = INVALID_SOCKET;
    clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if(clientSocket==INVALID_SOCKET){
        cout<<"Error at socket(): "<<WSAGetLastError()<<endl;
        WSACleanup();
        return 0;
    }
    else{
        cout<<"socket() is OK!"<<endl;
    }
    cout<<"\n=====STEP 3 calling the connect func==========\n";
    sockaddr_in clientService;
    clientService.sin_family = AF_INET;
    InetPton(AF_INET, "127.0.0.1", &clientService.sin_addr.s_addr);
    clientService.sin_port = htons(port);
    if(connect(clientSocket, (SOCKADDR*)&clientService, sizeof(clientService))==SOCKET_ERROR){
        cout<<"Client: connect() - failed to connect"<<endl;
        WSACleanup();
        return 0;
    }
    else{
        cout<<"Client: conenct() is ok!"<<endl;
        cout<<"Client: can start sending and receiving data..."<<endl;
    }
    
    cout<<"=========Send Chat to server=======\n ";
    char buffer[200];
    cout<<"Enter your message: ";
    cin.getline(buffer, 200);

    int byteCount = send(clientSocket, buffer, strlen(buffer), 0);
    if(byteCount>0){
        cout<<"Client: send() is ok!"<<endl;
        cout<<"Client: message sent to server"<<buffer<<endl;
    } else{
        cout<<"Client: send() failed!"<<WSAGetLastError()<<endl;
        WSACleanup();
    }
    cout<<"=========Send_to=======\n ";
    cout<<"=========Recv=======\n ";
    char buffer2[200];
    int byteCount2 = recv(clientSocket, buffer2, 200, 0);
    if(byteCount2>0){
        cout<<"Client: recv() is ok!"<<endl;
        cout<<"Client: message received from server: "<<buffer2<<endl;
    } else{
        cout<<"Client: recv() failed!"<<WSAGetLastError()<<endl;
    }
    cout<<"=========Recv_from=======\n ";
    
    system("pause");
    WSACleanup();
    return 0;
}