Crappy IRC bouncer

pc.cpp

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/ioctl.h>

using namespace std;
int ircSock, bncSock;

int sendCMD( string command, int socket ){
	return( send( socket, (void*)command.c_str(), command.length(), 0 ) );
}
// Tests, is data available on socket
int isData( int socket ){
	int count;
	int res = ioctl( socket, FIONREAD, &count );
	return count;
}
int main()
{
    cout << "Hello world!" << endl;
    int clientSock = 0;
	bool clientConnected = false;
	printf( "Starting IRC client...\n" );
	struct sockaddr_in ircAddr, bncAddr, clientAddr;
	char buffer[500];
	// TODO Replace this IP with gethostbyname() DNS
	ircSock = socket( AF_INET, SOCK_STREAM, 0 );
	bncSock = socket( AF_INET, SOCK_STREAM, 0 );

	ircAddr.sin_addr.s_addr = inet_addr("149.56.134.238");
	ircAddr.sin_family = AF_INET;
	ircAddr.sin_port = htons( 6667 );

	bncAddr.sin_addr.s_addr = INADDR_ANY;
	bncAddr.sin_family = AF_INET;
	bncAddr.sin_port = htons( 1337 );
	bzero( &(bncAddr.sin_zero), 8 ); // empty it
	int clientSCK = 0;
	bind( bncSock, (sockaddr *)&bncAddr, sizeof(struct sockaddr) );
	listen( bncSock, 1 );
	// We don't want to block server socket
	fcntl( bncSock, F_SETFL, O_NONBLOCK );

	connect( ircSock, (sockaddr*)&ircAddr, sizeof( ircAddr ) );

	// empty buffer, and send needed auth messages
	bzero( buffer, 500 );
	sendCMD( "USER esp32 8 * ESP32 test\n", ircSock );
	sendCMD( "NICK esp32\n", ircSock );
	while(1){
		// Client socket have data.
		if(isData(ircSock)){

			bzero( buffer, 500 );
			recv( ircSock, buffer, sizeof(buffer), 0 );
			string line = buffer;
			// handle PING command
			if(line.substr(0, 4)=="PING"){
				line[1] ='O';
				sendCMD( line, ircSock );
			}
			if( clientConnected ){
				sendCMD( line, clientSCK );
				//printf("Sending message to client, ID %i \n", clientSCK);
			}
            cout << line;
			// TODO Add logging, basic bouncer functionality
		}
		socklen_t socklen = sizeof(struct sockaddr_in);
		if( (clientSock = accept( bncSock, (sockaddr *)&clientAddr, &socklen ) ) > 0){
			clientConnected = true;
			clientSCK = clientSock;
			cout<< "Client connected :) "+clientSCK<<endl;
			sendCMD( "HI! \n", clientSCK );
		}
		if(clientConnected){
			if(isData(clientSCK)){
				bzero( buffer, 500 );
				recv( clientSCK, buffer, sizeof(buffer), 0 );
				string line = buffer;
				sendCMD( line, ircSock );
				//printf("Got message from client, sending it to freenode. Whoo!\n");
			}
		//if(clientSock<1){
		//	clientConnected = false;
		//}
		}
	}
    return 0;
}