//
//?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?serv_sock?clnt_sock;
????char?message[BUF_SIZE];
????int?str_len?i;

????struct?sockaddr_in?serv_adr?clnt_adr;
????socklen_t?clnt_adr_sz;

????if?（argc?!=?2）?{
????????printf（“Usage:?%s??\n“?argv[0]）;
????????exit（1）;
????}

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

????memset（&serv_adr?0?sizeof（serv_adr））;
????serv_adr.sin_family?=?AF_INET;
????serv_adr.sin_addr.s_addr?=?htonl（INADDR_ANY）;
????serv_adr.sin_port?=?htons（atoi（argv[1]））;