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

int main(int argc, char** argv){
  if (argc != 2){
    printf("u must specifie IP addr\n");
      exit(1);
  }
  printf("target = %s\n", argv[1]);
  int domain = AF_INET;
  int type = SOCK_STREAM;
  int fd = socket(domain, type, 0);
  printf("fd = %d\n", fd);

  struct sockaddr_in dest_addr;
  memset(&dest_addr, 0, sizeof(dest_addr)); 
  dest_addr.sin_family = AF_INET;
  dest_addr.sin_port = htons(80);
  dest_addr.sin_addr.s_addr = inet_addr(argv[1]);

  socklen_t len = 0;
  int ret = getsockname(fd,(struct sockaddr*)&dest_addr, &len);
  printf("ret_getsockname = %d\n", ret);

  ret = connect(fd,(struct sockaddr*)&dest_addr, len);
  printf("ret_connect = %d\n", ret);
  return 0;
}