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

#define BUFSZ 1024

int main(int argc, char *argv[]) {
  int s;
  struct sockaddr_in sa;
  struct in_addr ia;
  struct hostent *h;
  char *buffer = malloc(BUFSZ);

  if (argc < 3) {
    printf("usage: %s hostname port\n", argv[0]);
    return 1;
  }

  s = socket(PF_INET, SOCK_STREAM, 0);

  memset(buffer, 0, BUFSZ);
  h = gethostbyname(argv[1]);
  memcpy(&ia, h->h_addr_list[0], sizeof(struct in_addr));
  
  sa.sin_family = AF_INET;
  sa.sin_port = htons(atoi(argv[2]));
  sa.sin_addr.s_addr = ia.s_addr;

  if (!connect(s, (const struct sockaddr *)&sa, sizeof(struct sockaddr_in)))
    write(1, buffer, read(s, buffer, BUFSZ));
  else
    perror("connect");

  shutdown(s, SHUT_RDWR);
  
  return 0;
}