#include <sys/types.h>
#include <sys/socket.h>  //for connection and various
#include <netdb.h>
#include <string.h>//for memset
#include <stdio.h>//perror
#include <unistd.h>
#include<arpa/inet.h> //inet_pton and ntop









int main()
{
  char hostname[] = "127.0.0.1"; //this means local host
  sockaddr_in addr;
  int s = socket(AF_INET, SOCK_STREAM, 0);
  bzero(&addr, sizeof(addr));
  addr.sin_family = AF_INET;
  addr.sin_addr.s_addr = htonl(INADDR_ANY);
  addr.sin_port = htons(23000); //host to network byte ordering (short)

  printf("binding\n");
  int e = bind(s, (sockaddr *)&addr, sizeof(addr));
  if(e < 0 ) { perror("binding error: "); return 0; }

  printf("listening\n");
  e = listen(s,1);
  if(e < 0 ) perror("listen error: ");

  while(1) {
    printf("accepting?");
    sockaddr_in client;
    socklen_t len = sizeof(addr);
    //    int c = accept(s, NULL, NULL);
    int c = accept(s, (sockaddr *)&client, &len);
    char c2[256];
    inet_ntop(AF_INET,& (client.sin_addr),c2,256);
    printf("Client is: %s : %d \n",c2, ntohs(client.sin_port) );
    
    
    char msg[] = "hi client";
    printf("Sending: %s\n",msg);
    int s =send(c,msg,strlen(msg),0);
    if(s < 0) perror("Send: ");
    printf("Sent %d, now sleeping\n",s);
    sleep(10); //take a brief nap
    shutdown(c,2);
    close(c);
  }
}