#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int panic(char *where)
{
  fprintf(stderr, "error at %s '%s'\n", where, strerror(errno));
  exit(127);
}

int main(void) {

  int sd;
  struct sockaddr_in local_addr;
  int local_addr_len = sizeof(local_addr);
  
  if ((sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
    panic("socket");
  
  bzero((void *) &local_addr, local_addr_len);
  local_addr.sin_family = AF_INET;
  local_addr.sin_port = htons(8005);
  local_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
  
  if (bind(sd, (struct sockaddr *) &local_addr, local_addr_len) < 0)
    panic("bind");

  if (listen(sd, SOMAXCONN) < 0)
    panic("listen");
  
  while (1) {
    int new_sd;
    struct sockaddr_in client_addr;
    unsigned int client_addr_len = sizeof(struct sockaddr);

    new_sd = accept(sd, (struct sockaddr*) &client_addr, &client_addr_len);
    
    if (new_sd < 0)
      panic("accept");

    printf("New connection on socket descriptor %d\n", new_sd);
    close (new_sd);
  }

  close(sd);
  return 0;
}