유닉스 소켓 프로그래밍

  static int sockfd;
  static struct sockaddr_in server;
  struct hostent *host;
 
  server.sin_family = AF_INET;
  server.sin_port = htons(PORT);
  memset((char *)&server, '\0', sizeof(server));
 
  sockfd = socket(AF_INET, SOCK_STREAM, 0);
  if(sockfd == -1){
    perror("socket");
    exit(1);
  }
  host = gethostbyname(resource);
  if(host == NULL){
    perror("gethostbyname");
    exit(1);
  }
  memcpy((char *)&server.sin_addr, host->h_addr, host->h_length);
  if(connect(sockfd, (struct sockaddr *)&server, sizeof(struct sockaddr_in)) == -1){
    perror("connect");
    exit(1);
  }