/** Keepalive timer. */
void tport_keepalive_timer(tport_t *self, su_time_t now)
{
unsigned timeout = self->tp_params->tpp_pingpong;
if (timeout != 0) {
if (self->tp_ptime.tv_sec && !self->tp_recv_close &&
su_time_cmp(su_time_add(self->tp_ptime, timeout), now) < 0) {
SU_DEBUG_3(("%s(%p): %s to " TPN_FORMAT "%s\n",
__func__, (void *)self,
"closing connection", TPN_ARGS(self->tp_name),
" because of PONG timeout"));
tport_error_report(self, EPIPE, NULL);
if (!self->tp_closed)
tport_close(self);
return;
}
}
timeout = self->tp_params->tpp_keepalive;
if (timeout != 0 && timeout != UINT_MAX) {
if (su_time_cmp(su_time_add(self->tp_ktime, timeout), now) < 0) {
tport_tcp_ping(self, now);
}
}
}
/** Send pong */
int tport_ws_pong(tport_t *self)
{
self->tp_ping = 0;
if (tport_has_queued(self) || !self->tp_params->tpp_pong2ping)
return 0;
SU_DEBUG_7(("%s(%p): %s to " TPN_FORMAT "%s\n",
__func__, (void *)self,
"sending PONG", TPN_ARGS(self->tp_name), ""));
return send(self->tp_socket, "\r\n", 2, 0);
}
/** Send PING */
int tport_ws_ping(tport_t *self, su_time_t now)
{
ssize_t n;
char *why = "";
if (tport_has_queued(self))
return 0;
n = send(self->tp_socket, "\r\n\r\n", 4, 0);
if (n > 0)
self->tp_ktime = now;
if (n == 4) {
if (self->tp_ptime.tv_sec == 0)
self->tp_ptime = now;
}
else if (n == -1) {
int error = su_errno();
why = " failed";
if (!su_is_blocking(error))
tport_error_report(self, error, NULL);
else
why = " blocking";
return -1;
}
SU_DEBUG_7(("%s(%p): %s to " TPN_FORMAT "%s\n",
__func__, (void *)self,
"sending PING", TPN_ARGS(self->tp_name), why));
return n == -1 ? -1 : 0;
}
