#include<iostream>
#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<unistd.h>
#include <thread>
#include <mutex>
#include<netdb.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<cstring>


using namespace std;

int main(int argc,char **argv){

   char serverip[] = "127.0.0.1";
   const int port = 9999;
   struct sockaddr_in ser_sock,client_sock;
   socklen_t client_socket_len;
   char clientIP[64];

   int sfd = socket(AF_INET,SOCK_STREAM,0);
   ser_sock.sin_family = AF_INET;
   ser_sock.sin_port = htons(port);
   ser_sock.sin_addr.s_addr = inet_addr(serverip);
   bind(sfd,(struct sockaddr *)&ser_sock,sizeof(ser_sock));
   listen(sfd,1024);
   client_socket_len = sizeof(client_sock);
   int afd = accept(sfd,(struct sockaddr *)&client_sock,&client_socket_len);
      printf("client ip %s\n",inet_ntop(AF_INET,&client_sock.sin_addr.s_addr,clientIP,sizeof(clientIP)));

   close(sfd);



   return 0;
}