// programa servidor6.cpp - Servidor utilizando o hostname


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

int main( )
{
   int server_sockfd, client_sockfd;
   size_t server_len, client_len;
   struct sockaddr_in server_address;
   struct sockaddr_in client_address;
   
   unsigned short porta = 9734;
 

   unlink("server_socket");  // remocao de socket antigo
   if ( (server_sockfd = socket(AF_INET, SOCK_STREAM, 0) )  < 0  )  // cria um novo socket
     {
       printf(" Houve erro na ebertura do socket ");
       exit(1);
     }
   server_address.sin_family = AF_INET;
   server_address.sin_addr.s_addr = INADDR_ANY;
   server_address.sin_port = htons(porta);
 
   

   server_len = sizeof(server_address);
  
   if(  bind(server_sockfd, (struct sockaddr *) &server_address, server_len) < 0 )
    {
      perror("Houve error no Bind");
      exit(1);
    }

   if (listen(server_sockfd, 5) != 0)
    {
      perror("Houve error no Listen");
      exit(1);
    }

   while(1) {
        
     struct dado { 
        int idade;
        char nome[34];
        };

     dado aluno;
     aluno.idade = 38;
     strcpy(aluno.nome, "Jose Silva");

      printf("Servidor esperando ...\n");

      if( client_sockfd = accept(server_sockfd, (struct sockaddr *) &client_address, &client_len) < 0)
	{
	  perror("Houve erro no Accept");
          exit(2);
	}

      printf(" O Cliente %d se conectou ao servidor \n", client_sockfd);

      if( write(client_sockfd, &aluno, sizeof(aluno)) < 0 )
	{
          perror("Houve erro na escrita WRITE()");
          exit(3);
        }

      printf(" O Servidor executou o WRITE\n" );
      close(client_sockfd);
   }
}