From d8c72fbb2f4262573a0e2a8e2aee487742931b0f Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Fri, 4 Aug 2023 12:11:21 +0200
Subject: [PATCH] modem-restart: Add connectivity checks

---
 modem-restart | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/modem-restart b/modem-restart
index 422ca54..13e73ac 100755
--- a/modem-restart
+++ b/modem-restart
@@ -18,7 +18,28 @@ is_data_available()
 	return 0
 }
 
+connectivity()
+{
+	if nmcli c show --active | grep wlan0; then
+		return 0
+	fi
+
+	if [ $COUNTER -ge 10 ]; then
+		COUNTER=0
+		if ping -q -W5 -c1 -s0 libredns.gr; then
+			return 0
+		else
+
+			return 1
+		fi
+	fi
+
+	COUNTER=$((COUNTER + 1))
+	return 0
+}
+
 TRY=0
+COUNTER=0
 while :; do
 	if ! is_modem_available ; then
 		TRY=$((TRY + 1))
@@ -30,8 +51,14 @@ while :; do
 		TRY=0
 	elif ! is_data_available; then
 		echo $(date): Restarting mobile data
-		systemd-inhibit --what=sleep --why="Restart mobile data" sleep 5
+		nmcli c down internet
 		nmcli c up internet
+		systemd-inhibit --what=sleep --why="Restart mobile data" sleep 5
+	elif ! connectivity; then
+		echo $(date): Connectivity test failed. Restaring modem...
+		systemctl restart eg25-manager
+		systemd-inhibit --what=sleep --why="modem reset" sleep 60
+		TRY=$((TRY + 1))
 	fi
 
 	sleep 5