ngrok + telegram: Access to NR across the internet.
This flow allows to generate a ngrok tunnel and recieve the generated URL via Telegram. (thus you can access your Node-RED instance from a different WiFi network).
Sending the command to a telegram bot triggers a switch and ask which port you want to use and at selection it sends back the url you have to access. In this example the options are set up to access the Node-RED Editor (your.IP:1880), UI (your.IP:1880/ui) and even an Octoprint server(your.IP:5000) running in the same PC. Just remember, by default the tunnel only lasts 8hrs.
Load the flow, install the nodes, configure the bot, Chat ID and deploy.
Nodes used:
[{"id":"5c1dea62.8c0a64","type":"tab","label":"Ngrok","disabled":false,"info":""},{"id":"ced6bcd4.c64f","type":"tab","label":"Telegram","disabled":false,"info":""},{"id":"ca760302.49831","type":"ngrokauth","z":"5c1dea62.8c0a64"},{"id":"58333c09.3422f4","type":"link out","z":"5c1dea62.8c0a64","name":"ToTelegram","links":["877a9989.47e388"],"x":1055,"y":220,"wires":[]},{"id":"c0529703.691278","type":"function","z":"5c1dea62.8c0a64","name":"Formato ui","func":"var text = msg.payload;\nmsg.payload='Tu nuevo acceso remoto ngrok es: '+ text + '/ui';\nreturn msg;","outputs":1,"noerr":0,"x":890,"y":200,"wires":[["58333c09.3422f4"]]},{"id":"cef7aead.5d9b9","type":"switch","z":"5c1dea62.8c0a64","name":"filtro \"null\"","property":"payload","propertyType":"msg","rules":[{"t":"nnull"},{"t":"null"}],"checkall":"true","repair":false,"outputs":2,"x":550,"y":160,"wires":[["94bbe551.69f0c8"],["6b095d1a.04ede4"]]},{"id":"f23303f9.3a476","type":"function","z":"5c1dea62.8c0a64","name":"Formato editor","func":"var text = msg.payload;\nmsg.payload='Tu nuevo acceso remoto ngrok es: '+ text + '';\nreturn msg;","outputs":1,"noerr":0,"x":880,"y":160,"wires":[["58333c09.3422f4"]]},{"id":"94bbe551.69f0c8","type":"switch","z":"5c1dea62.8c0a64","name":"topic","property":"topic","propertyType":"msg","rules":[{"t":"eq","v":"editor","vt":"str"},{"t":"eq","v":"ui","vt":"str"}],"checkall":"true","repair":false,"outputs":2,"x":710,"y":160,"wires":[["f23303f9.3a476"],["c0529703.691278"]]},{"id":"7305302b.a8c69","type":"link in","z":"5c1dea62.8c0a64","name":"toNgrok","links":["c2d8214f.5720c"],"x":115,"y":220,"wires":[["dc4cf05.efb811"]]},{"id":"6b095d1a.04ede4","type":"change","z":"5c1dea62.8c0a64","name":"Off noti","rules":[{"t":"set","p":"payload","pt":"msg","to":"Acceso ngrok apagado.","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":900,"y":240,"wires":[["58333c09.3422f4"]]},{"id":"af4c9f6e.d2afe","type":"ngrok","z":"5c1dea62.8c0a64","port":"1880","creds":"ca760302.49831","region":"us","subdomain":"","name":"ngrok:1880","auth":"","x":370,"y":180,"wires":[["cef7aead.5d9b9"]]},{"id":"20f6a9ca.451cb6","type":"ngrok","z":"5c1dea62.8c0a64","port":"5000","creds":"ca760302.49831","region":"us","subdomain":"","name":"ngrok:5000","auth":"","x":370,"y":260,"wires":[["ec100b82.58e798"]]},{"id":"dc4cf05.efb811","type":"switch","z":"5c1dea62.8c0a64","name":"topic","property":"topic","propertyType":"msg","rules":[{"t":"eq","v":"ui","vt":"str"},{"t":"eq","v":"editor","vt":"str"},{"t":"eq","v":"octoprint","vt":"str"}],"checkall":"true","repair":false,"outputs":3,"x":210,"y":220,"wires":[["af4c9f6e.d2afe"],["af4c9f6e.d2afe"],["20f6a9ca.451cb6"]]},{"id":"ec100b82.58e798","type":"switch","z":"5c1dea62.8c0a64","name":"filtro \"null\"","property":"payload","propertyType":"msg","rules":[{"t":"null"},{"t":"nnull"}],"checkall":"true","repair":false,"outputs":2,"x":550,"y":280,"wires":[["6b095d1a.04ede4"],["5f33e57e.6f6e6c"]]},{"id":"5f33e57e.6f6e6c","type":"function","z":"5c1dea62.8c0a64","name":"Formato Octoprint","func":"var text = msg.payload;\nmsg.payload='Tu nuevo acceso remoto ngrok es: '+ text + '';\nreturn msg;","outputs":1,"noerr":0,"x":870,"y":280,"wires":[["58333c09.3422f4"]]},{"id":"144c3f4f.cac421","type":"comment","z":"5c1dea62.8c0a64","name":"Añade el \"/xxx\" si aplica","info":"","x":880,"y":120,"wires":[]},{"id":"7ff5c239.1fe57c","type":"debug","z":"ced6bcd4.c64f","name":"Telegram","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":1280,"y":200,"wires":[]},{"id":"3ce8d526.48159a","type":"function","z":"ced6bcd4.c64f","name":"Formato para Telegram","func":"var text = msg.payload;\nmsg.payload='{\\n\"text\": \"'+ text + '\"\\n}'\n//',\\n\"parse_mode\": \"Markdown\"\nreturn msg;","outputs":1,"noerr":0,"x":1070,"y":220,"wires":[["9cff571.6dca7a8","7ff5c239.1fe57c"]]},{"id":"877a9989.47e388","type":"link in","z":"ced6bcd4.c64f","name":"toTelegram","links":["2ee2f44.af4b60c","d6c75b00.d39148","592da6a.2e70a58","9d675fa0.f90c","ec254b84.b17bc8","a3fe156e.ad71d8","73af0803.c282c8","2c8ae8da.bf31f8","dc5307d8.6fd2e8","4905f533.8fc32c","58333c09.3422f4"],"x":915,"y":220,"wires":[["3ce8d526.48159a"]]},{"id":"254fc33e.96552c","type":"change","z":"ced6bcd4.c64f","name":"on","rules":[{"t":"set","p":"payload","pt":"msg","to":"on","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":650,"y":180,"wires":[["c2d8214f.5720c"]]},{"id":"20cd6706.d00bd8","type":"change","z":"ced6bcd4.c64f","name":"ui","rules":[{"t":"set","p":"topic","pt":"msg","to":"ui","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":490,"y":140,"wires":[["254fc33e.96552c"]]},{"id":"45998880.f0c358","type":"change","z":"ced6bcd4.c64f","name":"editor","rules":[{"t":"set","p":"topic","pt":"msg","to":"editor","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":490,"y":180,"wires":[["254fc33e.96552c"]]},{"id":"c2d8214f.5720c","type":"link out","z":"ced6bcd4.c64f","name":"ToNgrok","links":["7c697255.b465fc","1e91adea.262222","7305302b.a8c69"],"x":775,"y":220,"wires":[]},{"id":"51f32bae.1390b4","type":"change","z":"ced6bcd4.c64f","name":"off","rules":[{"t":"set","p":"payload","pt":"msg","to":"off","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":650,"y":260,"wires":[["c2d8214f.5720c"]]},{"id":"2de2c37e.651d6c","type":"change","z":"ced6bcd4.c64f","name":"editor","rules":[{"t":"set","p":"topic","pt":"msg","to":"editor","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":490,"y":260,"wires":[["51f32bae.1390b4"]]},{"id":"5eb4f8bd.28f818","type":"change","z":"ced6bcd4.c64f","name":"octoprint","rules":[{"t":"set","p":"topic","pt":"msg","to":"octoprint","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":500,"y":220,"wires":[["254fc33e.96552c"]]},{"id":"b8ccbb8a.020df8","type":"telegrambot-command","z":"ced6bcd4.c64f","name":"/ngrok","bot":"d87880d3.ec76","command":"/ngrok","commandType":"str","commandCase":false,"x":170,"y":200,"wires":[["938db39.249a05"]]},{"id":"938db39.249a05","type":"telegrambot-switch","z":"ced6bcd4.c64f","name":"","bot":"","chatId":"","question":"ui or editor?","answers":["ui","editor","octoprint","off"],"outputs":4,"autoAnswerCallback":true,"timeoutValue":"","timeoutUnits":"","x":320,"y":200,"wires":[["20cd6706.d00bd8"],["45998880.f0c358"],["5eb4f8bd.28f818"],["2de2c37e.651d6c"]]},{"id":"9cff571.6dca7a8","type":"telegrambot-payload","z":"ced6bcd4.c64f","name":"Send","bot":"","chatId":"","sendMethod":"sendMessage","payload":"","x":1270,"y":240,"wires":[[]]}]
