draytek-watcher

This a small daemon to install on an Linux/Ubuntu/Windows box to check the status of the WAN connection of a Draytek router and to reenable it if it seems to be down.

DISCLAIMER

I will provide no support for this project. I'm using it personally to reboot my WAN connection when it is stuck in a dangling state.

This project is only tested with:

• a Draytek Vigor 2927ax and a Ubuntu server (systemd).
• a Draytek Vigor 2927 and a Windows 10 workstation (service).

So it might not work with a different version without some tweaking. It is using the telnet protocol to interact with the router.

Build and Install (for Linux)

Clone this repo and install .NET SDK 6.0+.

Then install dotnet-releaser:

dotnet tool install --global dotnet-releaser

Edit the configuration file in draytek-watcher/draytek-watcher.toml to update the admin password:

# -------------------------------------------------
# Router configuration
# -------------------------------------------------
# Connection settings
address = "192.168.1.1"
port = 23
type = "DrayTek"
protocol = "telnet"
username = "admin"
password = "REPLACE_WITH_YOUR_PASSWORD"  # <<<< HERE: Put your admin password
# WAN number
wan = 1
# How often do we check for the router state?
verify_delay_in_seconds = 300
# How many times do we try to reconnect the WAN in case of offline?
retry_count = 4
# How much time to wait after a retry and before checking if the WAN is back online?
sleep_in_millis_between_retry_count = 10000
# Optional HTTP(s)/GET request to be executed after the router is back online
# wan_up_request = "https://notify.me/user=me&message=Starlink%20is%20up"

Then run the command:

cd src
dotnet-releaser build --force dotnet-releaser.toml

This should generate a deb package at artifacts-dotnet-releaser\draytek-watcher.0.1.0.linux-x64.deb that you can install on an Ubuntu server

sudo apt install ./artifacts-dotnet-releaser\draytek-watcher.0.1.0.linux-x64.deb

The watcher is logging all its activity to systemd logger. You can look at the logs:

sudo journalctl -u draytek-watcher

You should see logs like this:

Jan 18 01:46:12 ak1-linux draytek-watcher[21335]: Microsoft.Hosting.Lifetime[0] Application started. Hosting environment: Production; Content root path: /
Jan 18 01:46:12 ak1-linux draytek-watcher[21335]: draytek-watcher[0] DrayTekWatcher.ConfigurationFile = /home/xoofx/code/DrayTekWatcher/src/DrayTekWatcher/bin/Release/net6.0/linux-x64/publish/draytek-watcher.toml
Jan 18 01:46:12 ak1-linux draytek-watcher[21335]: draytek-watcher[0] Configuration = Type: DrayTek, Address: 192.168.1.1, Port: 23, Protocol: telnet, Username: admin, Password: ********************************, VerifyDelayInSeconds: 300v
Jan 18 01:46:12 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - is online.
Jan 18 01:46:12 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Verifying every 300s.
Jan 18 08:42:16 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - is offline.
Jan 18 08:42:16 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Trying [1/4] to restart it.
Jan 18 08:42:16 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Stopping WAN.
Jan 18 08:42:18 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Waiting WAN for 2s before trying to start .
Jan 18 08:42:20 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Starting WAN.
Jan 18 08:42:21 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Waiting to restart for 10s.
Jan 18 08:42:31 ak1-linux draytek-watcher[21335]: draytek-watcher[0] => WAN1 - Restarted successfully.

Build and Install (for Windows)

Clone this repo and install .NET SDK 6.0+.

Then run:

dotnet build

Currently, only systemd services are supported by dotnet-releaser for deb and rpm packages. But the tool is working as well as a windows service. Here is how to use the Windows sc (Service Control) to register the executable as a service.

:: create (copy your toml configuration along with the draytek-watcher.exe file)
sc create DrayTekWatcherService DisplayName="DrayTek-Watcher Service" binPath="full\path\to\draytek-watcher.exe"

:: start
sc start DrayTekWatcherService

:: stop
sc stop DrayTekWatcherService

:: delete
sc delete DrayTekWatcherService

Once installed you can use the Event Viewer to check logs, or service.msc to control the service (like changing the startup type to Automatic).

License

This software is released under the BSD-Clause 2 license.

Author

Alexandre Mutel aka xoofx.