ppp_is_up

#include <rtl.h>

BOOL ppp_is_up (void);

The ppp_is_up function determines the state of PPP link between the two modems. It returns __TRUE if the PPP link state is "network" and IP frames can be exchanged.

The ppp_is_up function is in the RL-TCPnet library. The prototype is defined in rtl.h.

note

• You can call the ppp_is_up function when the PPP network daemon is either in client mode or in server mode.
• You can also use the ppp_is_up function to continuously monitor the state of the PPP link.

The ppp_is_up function returns __TRUE if the PPP link between the modems is up and functional. The function returns __FALSE if the PPP link is down.

ppp_close, ppp_connect, ppp_listen

#include <rtl.h>

void connect_soc (void) {
  /* Connect TCP socket when PPP is up. */
  if(ppp_is_up()) {
    tcp_connect (socket_tcp, remip, 1000, 0);
  }
}