#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

main(int argc, char *argv[]) 
{
	//Handle za socket
	int mySocket;

	//struktura z IP naslovom, ipd
	struct sockaddr_in remoteAddress;

	//Bufferji
	char transmitBuffer[4096];
	char recieveBuffer[4096];

	//DNS resolve hosto iz command lina v IP
	struct hostent *hostEntry = gethostbyname(argv[1]);
		
	//Naredi socket
	mySocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
	if(mySocket == -1) exit(1); //ce ni uspelo, umri z kodo 1

	//Vnesi v naslov za socket protokol, IP naslov in port
	remoteAddress.sin_family = AF_INET;
	bcopy(hostEntry->h_addr, &(remoteAddress.sin_addr.s_addr), hostEntry->h_length);
	remoteAddress.sin_port = htons(80);
 
	//Povezi se, ali umri z kodo 2
	if(connect(mySocket, &remoteAddress, sizeof(remoteAddress)) != 0) exit(2);

	//vnesi request v buffer
	strcpy(transmitBuffer, "GET / HTTP/1.0\r\n\r\n");

	//zacasna spremenljivka za dolzino
	int len;

	//Poslji in ujemi poslano dolzino
	len = send(mySocket, transmitBuffer, strlen(transmitBuffer), 0);
	if(len == -1) exit (3); //Ce nisi poslal nic, umri z kodo 3

	//Preberi odgovor z socketa (opomba: ta stvar fizicno caka da server odgovori)
	len = recv(mySocket, recieveBuffer, sizeof(recieveBuffer), 0);
	if(len == -1) exit (4); //Ce si dobil nekaj kar nima dolzine (napako), umri z kodo 4

	//Zapri socket
	close (mySocket);

	//Se ena zacasna
	int i;
	
	//spremeni \n\n (konec headerja) v konec stringa
	for(i=2;i<len;i++) {
		if(recieveBuffer[i-1]=='\n' && recieveBuffer[i]=='\n')
			recieveBuffer[i]=0;
		if(recieveBuffer[i-2]=='\n' && recieveBuffer[i]=='\n')
		        recieveBuffer[i]=0;		
		}		
	//Izpiši rezultat (header)
	printf("%s",recieveBuffer);
}