// programa cliente7.cpp --> ler um vetor de caracter. Protocolo UDP


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

int main( )
{
   int sockfd;
   int len;
   socklen_t len_recv;
   struct sockaddr_in address;
   int result;
   char vetor_ch[4] = {'A','B','C','D'};

   unsigned short porta = 9734;

   sockfd  = socket(AF_INET, SOCK_DGRAM,0);  // criacao do socket

   address.sin_family = AF_INET;
   address.sin_addr.s_addr = inet_addr("127.0.0.1");
   address.sin_port = htons(porta);
  
   len = sizeof(address);
   len_recv = sizeof(address);

   sendto(sockfd,  vetor_ch,sizeof(vetor_ch),0,(struct sockaddr *) &address, len);
   recvfrom(sockfd, vetor_ch,sizeof(vetor_ch),0,(struct sockaddr *) &address,&len_recv);
  // send(sockfd,  vetor_ch,sizeof(vetor_ch),0);
  // recv(sockfd, vetor_ch,sizeof(vetor_ch),0);
  //write(sockfd,  vetor_ch,sizeof(vetor_ch));
  //read(sockfd, vetor_ch,sizeof(vetor_ch));

  printf( "Caracter vindo do servidor = %c %c %c %c\n",vetor_ch[0],vetor_ch[1],vetor_ch[2],vetor_ch[3]);
  close(sockfd);
  exit(0);
}