/media/sda-magnetic/david/Dokumente-15/fernuni-hagen/cs-i-ii/fsm/fsm/src-2020-06-28/client.c

/* client.c */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define BUF 1024
int main (int argc, char **argv) {
  int create_socket;
  char *buffer = malloc (BUF);
  struct sockaddr_in address;
  int size;
  if( argc < 2 ){
     printf("Usage: %s ServerAdresse\n", *argv);
     exit(EXIT_FAILURE);
  }
  printf ("\e[2J");
  if ((create_socket=socket (AF_INET, SOCK_STREAM, 0)) > 0)
    printf ("Socket wurde angelegt\n");
  address.sin_family = AF_INET;
  address.sin_port = htons (15000);
  inet_aton (argv[1], &address.sin_addr);
  if (connect ( create_socket,
                (struct sockaddr *) &address,
                sizeof (address)) == 0)
    printf ("Verbindung mit dem Server (%s) hergestellt\n",
       inet_ntoa (address.sin_addr));
  do {
      size = recv(create_socket, buffer, BUF-1, 0);
      if( size > 0)
         buffer[size] = '\0';
      printf ("Nachricht erhalten: %s\n", buffer);
      if (strcmp (buffer, "quit\n")) {
         printf ("Nachricht zum Versenden: ");
         fgets (buffer, BUF, stdin);
         send(create_socket, buffer, strlen (buffer), 0);
       }
  } while (strcmp (buffer, "quit\n") != 0);
  close (create_socket);
  return EXIT_SUCCESS;
}