#include<stdio.h>
#include<string.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<iostream>
#include <unistd.h>
#include<stdlib.h>
using namespace std;

int main(int argc, char *argv[]) {
  struct addrinfo hints, *res;
  int status;
  char ipstr[INET6_ADDRSTRLEN];



  memset(&hints, 0, sizeof hints);
  hints.ai_family = AF_UNSPEC;
  hints.ai_socktype = SOCK_STREAM;

  getaddrinfo("vortex.labs.overthewire.org", "5842", &hints, &res);


  int sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);

  connect(sockfd, res->ai_addr, res->ai_addrlen);

  if(sockfd != -1)
    std::cout<<"Connessione riuscita"<<std::endl;
  else
    std::cout<<"Connessione rifiutata"<<std::endl;

  char *msg1, *msg2, *msg3, *msg4;



  int bytes_rec1 = recv(sockfd, msg1, 4, 0);
  cout<<"Bytes ricevuti = "<<bytes_rec1<<endl;
  unsigned long  int m1 = ntohl(*msg1);
  cout<<"Primo intero letto = "<<m1<<endl;
  bytes_rec1 = recv(sockfd, msg1, 4, 0);
  unsigned long  int m2 = ntohl(*msg1);
  cout<<"Bytes ricevuti = "<<bytes_rec1<<endl;
  cout<<"Secondo intero letto = "<<m2<<endl;
  bytes_rec1 = recv(sockfd, msg1, 4 , 0);
  unsigned long  int m3 = ntohl(*msg1);
  cout<<"Bytes ricevuti = "<<bytes_rec1<<endl;
  cout<<"Terzo intero letto = "<<m3<<endl;
  bytes_rec1 = recv(sockfd,msg1, 4, 0 );
  cout<<"Bytes ricevuti = "<<bytes_rec1<<endl;
  unsigned long  int m4 = ntohl(*msg1);
  cout<<"Quarto intero letto = "<<m4<<endl;

  unsigned long  int sum = m1 + m2 + m3 + m4;

  cout<<"La somma è "<<sum<<endl;

  unsigned long int converted_sum = htonl(sum) ;

  int bytes_sent = write(sockfd, &converted_sum , 4);
  cout<<"Bytes trasmessi = "<<bytes_sent<<endl;
  bytes_rec1 = recv(sockfd, msg1, 1024, 0);

  cout<<"Bytes ricevuti = "<<bytes_rec1<<endl;


  cout<<msg1<<endl;
  close(sockfd);

}