Internet-detector is an application for checking the availability of the Internet. Performs periodic connections to a known public host and determines the actual Internet availability.

Features:

It can run continuously as a system service or only in an open web interface.
Checking the availability of a host using ping or by connecting via TCP to a specified port.
LED indication of Internet availability.
Performing actions when connecting and disconnecting the Internet: rebooting device, restarting network or modem (internet-detector-mod-modem-restart), executing custom shell scripts.
Sending email notification when Internet access is restored (internet-detector-mod-email).
The daemon is written entirely in Lua using the luaposix library.

OpenWrt >= 21.02.

Dependences: lua, luaposix, libuci-lua.

Installation notes:

opkg update
wget --no-check-certificate -O /tmp/internet-detector_1.5.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector_1.5.0-r1_all.ipk
opkg install /tmp/internet-detector_1.5.0-r1_all.ipk
rm /tmp/internet-detector_1.5.0-r1_all.ipk
service internet-detector start
service internet-detector enable

wget --no-check-certificate -O /tmp/luci-app-internet-detector_1.5.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-app-internet-detector_1.5.0-r1_all.ipk
opkg install /tmp/luci-app-internet-detector_1.5.0-r1_all.ipk
rm /tmp/luci-app-internet-detector_1.5.0-r1_all.ipk
service rpcd restart

i18n-ru:

wget --no-check-certificate -O /tmp/luci-i18n-internet-detector-ru_1.5.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/luci-i18n-internet-detector-ru_1.5.0-r1_all.ipk
opkg install /tmp/luci-i18n-internet-detector-ru_1.5.0-r1_all.ipk
rm /tmp/luci-i18n-internet-detector-ru_1.5.0-r1_all.ipk

Screenshots:

Modem restart module (internet-detector-mod-modem-restart):

Dependences: modemmanager.

wget --no-check-certificate -O /tmp/internet-detector-mod-modem-restart_1.5.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-modem-restart_1.5.0-r1_all.ipk
opkg install /tmp/internet-detector-mod-modem-restart_1.5.0-r1_all.ipk
rm /tmp/internet-detector-mod-modem-restart_1.5.0-r1_all.ipk
service internet-detector restart

Email notification module (internet-detector-mod-email):

Dependences: mailsend.

wget --no-check-certificate -O /tmp/internet-detector-mod-email_1.5.0-r1_all.ipk https://github.com/gSpotx2f/packages-openwrt/raw/master/current/internet-detector-mod-email_1.5.0-r1_all.ipk
opkg install /tmp/internet-detector-mod-email_1.5.0-r1_all.ipk
rm /tmp/internet-detector-mod-email_1.5.0-r1_all.ipk
service internet-detector restart