//
//?Created?by?Administrator?on?2018/12/28.
//

#include?
#include?
#include?
#include?
#include?
#include?
#define?BUF_SIZE?1024
void?error_handling（char?*message）;

int?main（int?argc?char?*argv[]）?{
????int?sock;
????struct?sockaddr_in?serv_addr;
????char?message[BUF_SIZE];
????int?str_len=0;
????int?idx?=?0?read_len?=?0;


????if?（argc?!=?3）?{
????????printf（“Usage:?%s??\n“?argv[0]）;
????????exit（1）;
????}

????sock?=?socket（PF_INET?SOCK_STREAM?0）;
????if?（sock?==?-1）?{
????????error_handling（“socket（）?error“）;
????}

????memset（&serv_addr?0?sizeof（serv_addr））;
????serv_addr.sin_family?=?AF_INET;
????serv_addr.sin_addr.s_addr?=?inet_addr（argv[1]）;
??