slip_is_up

#include <rtl.h>

BOOL slip_is_up (void);

The slip_is_up function determines the state of SLIP link between the two modems. It returns __TRUE if IP frames can be exchanged over the SLIP link.

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

note

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

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

slip_close, slip_connect, slip_listen

#include <rtl.h>

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