// programa servidor4.cpp - Servidor que lê e escreve em um vetor de caracter

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

int main( )
{
   int server_sockfd, client_sockfd;
   size_t server_len, client_len;
   struct sockaddr_in server_address;
   struct sockaddr_in client_address;

   unlink("server_socket");  // remocao de socket antigo
   server_sockfd = socket(AF_INET, SOCK_STREAM, 0);  // cria um novo socket

   server_address.sin_family = AF_INET;
   server_address.sin_addr.s_addr = inet_addr("127.0.0.1");
   server_address.sin_port = 9734;
 
   //strcpy(server_address.sun_path, "server_socket");

   server_len = sizeof(server_address);
   bind(server_sockfd, (struct sockaddr *) &server_address, server_len);

   listen(server_sockfd, 5);
   while(1) {
      char vetor_ch[4];

      printf("Servidor esperando ...\n");
      client_sockfd = accept(server_sockfd, (struct sockaddr *) &client_address, &client_len);

      read(client_sockfd, vetor_ch, sizeof(vetor_ch));
      for(int i =0; i<4;i++) {
        vetor_ch[i]++;
      }
      write(client_sockfd, vetor_ch, sizeof(vetor_ch));
      close(client_sockfd);
   }
}