udp_close

#include <rtl.h>

BOOL udp_close (
    U8 socket);    /* Socket handle to close. */

The udp_close function closes the UDP socket identified in the function argument. After calling the udp_close function, the UDP socket cannot send or receive any data packet.

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

note

• After closing the UDP socket, you can reopen it using the udp_open function.
• The UDP socket still reserves memory after calling the udp_close function. Hence, if you do not need the socket, you must release the memory using the udp_release_socket function after calling udp_close.

The udp_close function returns __TRUE if the UDP socket is successfully closed. Otherwise, the function returns __FALSE.

udp_open, udp_release_socket

#include <rtl.h>

void disconnect_udp (U8 udp_soc) {
   ..
  /* This UDP connection is no longer needed */
  udp_close (udp_soc);
  udp_release_socket (udp_soc);
}