diff options
Diffstat (limited to 'gatchat/gatppp.c')
-rw-r--r-- | gatchat/gatppp.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c index 2608d522..2f97d552 100644 --- a/gatchat/gatppp.c +++ b/gatchat/gatppp.c @@ -46,6 +46,8 @@ #define PPP_ADDR_FIELD 0xff #define PPP_CTRL 0x03 +#define GUARD_TIMEOUTS 1500 + enum ppp_phase { PPP_PHASE_DEAD = 0, /* Link dead */ PPP_PHASE_ESTABLISHMENT, /* LCP started */ @@ -79,6 +81,7 @@ struct _GAtPPP { GAtSuspendFunc suspend_func; gpointer suspend_data; int fd; + guint guard_timeout_src; gboolean suspended; }; @@ -509,6 +512,43 @@ void g_at_ppp_shutdown(GAtPPP *ppp) pppcp_signal_close(ppp->lcp); } +static gboolean call_suspend_cb(gpointer user_data) +{ + GAtPPP *ppp = user_data; + + ppp->guard_timeout_src = 0; + + if (ppp->suspend_func) + ppp->suspend_func(ppp->suspend_data); + + return FALSE; +} + +static gboolean send_escape_sequence(gpointer user_data) +{ + GAtPPP *ppp = user_data; + GAtIO *io = g_at_hdlc_get_io(ppp->hdlc); + + ppp->guard_timeout_src = 0; + g_at_io_write(io, "+++", 3); + ppp->guard_timeout_src = g_timeout_add(GUARD_TIMEOUTS, + call_suspend_cb, ppp); + + return FALSE; +} + +void g_at_ppp_suspend(GAtPPP *ppp) +{ + if (ppp == NULL) + return; + + ppp->suspended = TRUE; + ppp_net_suspend_interface(ppp->net); + g_at_hdlc_suspend(ppp->hdlc); + ppp->guard_timeout_src = g_timeout_add(GUARD_TIMEOUTS, + send_escape_sequence, ppp); +} + void g_at_ppp_resume(GAtPPP *ppp) { if (ppp == NULL) |