getcanoe/canoed

Daemon for the Canoe Nano wallet, written in Nodejs

NOT MAINTAINED ANYMORE

Canoe is not maintained, the Canoe website with the binary downloads is not live anymore and this wallet backend is not running. The domain "getcanoe.io" will not be renewed at end of 2021. This means Canoe can no longer be used but if you used Canoe earlier you can easily import your seed to another wallet, no funds are lost. Canoe is fully Open Source and anyone could revive it, rebrand and start their own server. If anyone is interested in doing that, feel free to contact me.

regards, Göran and the rest of the developers of Canoe

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Canoed

Canoed is a backend for the Canoe Nano wallet. It uses a rai_node and creates a middle layer for mediating RPC calls, holding external state, forwarding blocks over MQTT and various other things Canoe needs to be done on the server. It uses a runing rai_node, Redis, PostgreSQL and VerneMQ.

Nodejs

Canoed was first written in Nim, a modern high performance language that produces small and fast binaries by compiling via C. I love Nim, but we switched to Nodejs because there is no properly working MQTT library in Nim. The code style is fairly plain vanilla.

Running Canoed

It's the standard:

npm install
./canoed

See source code to find the default canoed.conf JSON configuration.

Adding a systemd service

This presumes you already have a rai_node.service defined according to the wiki page.

Create /etc/systemd/system/canoed.service:

[Unit]
Description=Canoed
Documentation=https://github.com/gokr/canoed
After=network.target httpd.service rai_node.service

[Service]
User=canoed
WorkingDirectory=/home/canoed
ExecStart=/home/canoed/canoed/canoed
KillMode=mixed
KillSignal=SIGTERM
Restart=always
RestartSec=2s
NoNewPrivileges=yes
StandardOutput=syslog+console
StandardError=syslog+console

[Install]
WantedBy=multi-user.target

Then enable it:

systemctl daemon-reload
systemctl enable canoed
systemctl start canoed

canoed's Issues

Set a default representative via the config

Setting a default representative via the backend config would be desireable to help dencetralise the network even more. Right now the default rep is hard coded in the client correct?

Banning IPs to prevent continuous work requests

It might be interesting to add some kind of IP banning to be able to ban people trying to DoS by requesting work over and over again. Maybe some fail2ban setup could also work and automatically ban clients that request too much work.

Possibility to add a password authentication

Some kind of authentication would be great to be able to control who has access to your backend. Maybe just some basic http auth would be enough.

error: Error: Connection refused: Not authorized

Error when initialising the canoed

[error: Error: Connection refused: Not authorized
    at MqttClient._handleConnack (/root/canoed/node_modules/mqtt/lib/client.js:893:15)
    at MqttClient._handlePacket (/root/canoed/node_modules/mqtt/lib/client.js:329:12)
    at work (/root/canoed/node_modules/mqtt/lib/client.js:271:12)
    at Writable.writable._write (/root/canoed/node_modules/mqtt/lib/client.js:281:5)
    at doWrite (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:428:64)
    at writeOrBuffer (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:417:5)
    at Writable.write (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:334:11)
    at Socket.ondata (_stream_readable.js:693:20)
    at Socket.emit (events.js:197:13)
    at addChunk (_stream_readable.js:288:12) ](url)

Here is terminal Script

root@acvd:~/canoed# canoed
info: Connected to Postgres
info: Connecting to Redis ...
info: Http server started on port 8180
info: Connected to Redis
error: Error: Connection refused: Not authorized
    at MqttClient._handleConnack (/root/canoed/node_modules/mqtt/lib/client.js:893:15)
    at MqttClient._handlePacket (/root/canoed/node_modules/mqtt/lib/client.js:329:12)
    at work (/root/canoed/node_modules/mqtt/lib/client.js:271:12)
    at Writable.writable._write (/root/canoed/node_modules/mqtt/lib/client.js:281:5)
    at doWrite (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:428:64)
    at writeOrBuffer (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:417:5)
    at Writable.write (/root/canoed/node_modules/readable-stream/lib/_stream_writable.js:334:11)
    at Socket.ondata (_stream_readable.js:693:20)
    at Socket.emit (events.js:197:13)
    at addChunk (_stream_readable.js:288:12)
info: Calling exit...
info: Cleaning up...