How to connect to a IRC channel

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C++

Windows

Hi Code project,

I am coding a simple program which connects to a IRC channel and reads out messages. Please explain how i can do that ?

I can code a program which connects to a host but not to web servers or IRC servers o you see the problem.
Thanks in advance.

#include <iostream>
#include <winsock2.h>
#include <string>
#include <cstring>
#include <fstream>

#pragma comment(lib, "ws2_32.lib")

using namespace std;
unsigned long resolveHost(const string &host){
    LPHOSTENT entryHost = gethostbyname(host.c_str());

    if(!entryHost){
        unsigned int addr = inet_addr(host.c_str());
        entryHost = gethostbyaddr((char*)&addr, 4, AF_INET);
        if(!entryHost)  return 0;
    }
    return *((int*)*entryHost->h_addr_list);
}

int main(){
    WSADATA         wsaData;
    SOCKADDR_IN     saddr;
    SOCKET          sock;
    char            buffer[1024*8] = {"0"};
    string          adres_hosta = "irc.example.com";
    string          sbuffer;
    string          nick = "johnsmith";
    string          kanal = "#channel";
    string          password = "p@55w0rd";
    string          auth = "/AuthServ auth johnsmith p@55w0rd";
    WSAStartup(MAKEWORD(2, 2), &wsaData);
    sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    saddr.sin_addr.S_un.S_addr = resolveHost(adres_hosta);
    saddr.sin_port =  htons(6667);
    saddr.sin_family = AF_INET;
    if(connect(sock, (sockaddr*)&saddr, sizeof(sockaddr)) == SOCKET_ERROR){
        cout << "Failed" << adres_hosta << ".";
        return 0;
    }
    recv(sock, buffer, 1024*8, 0);
    cout << buffer << endl << endl << flush;
    /*
           1. Pass message
           2. Nick message
           3. User message
    */
    sbuffer ="PASS " + password + "\r\n";
    send(sock, sbuffer.c_str(), strlen(sbuffer.c_str()), 0);
    recv(sock, buffer, 1024*8, 0);
    cout << sbuffer.c_str() << endl << buffer << endl << endl;

    sbuffer = "NICK " + nick + "\r\n";
    send(sock, sbuffer.c_str(), strlen(sbuffer.c_str()), 0);
    recv(sock, buffer, 1024*8, 0);
    cout << sbuffer.c_str() << endl << buffer << endl << endl;

    sbuffer = "USER " + nick + " " + adres_hosta + " " + nick + " :" + nick + "\r\n";
    send(sock, sbuffer.c_str(), strlen(sbuffer.c_str()), 0);
    recv(sock, buffer, 1024*8, 0);
    cout << sbuffer.c_str() << endl << buffer << endl << endl;

    sbuffer = "JOIN " + kanal + "\r\n";
    send(sock, sbuffer.c_str(), strlen(sbuffer.c_str()), 0);
    recv(sock, buffer, 1024*8, 0);
    cout << sbuffer.c_str() << endl << buffer << endl << endl;

    while(true){
        recv(sock, buffer, 1024*8, 0);
        cout << buffer << endl << endl;
        if(buffer[0] == 'PING'){
            sbuffer = "PONG :" + adres_hosta + "\r\n";
            send(sock, sbuffer.c_str(), strlen(sbuffer.c_str()), 0);
            cout << sbuffer.c_str() << endl << buffer << endl << endl;
        }
    }
    return 1;
}