lnbits-legend/docs/devs/websockets.md

layout	parent	title	nav_order
default	For developers	Websockets	2

Websockets

websockets are a great way to add a two way instant data channel between server and client.

LNbits has a useful in built websocket tool. With a websocket client connect to (obv change somespecificid) wss://legend.lnbits.com/api/v1/ws/somespecificid (you can use an online websocket tester). Now make a get to https://legend.lnbits.com/api/v1/ws/somespecificid/somedata. You can send data to that websocket by using from lnbits.core.services import websocketUpdater and the function websocketUpdater("somespecificid", "somdata").

Example vue-js function for listening to the websocket:

initWs: async function () {
    if (location.protocol !== 'http:') {
        localUrl =
          'wss://' +
          document.domain +
          ':' +
          location.port +
          '/api/v1/ws/' +
          self.item.id
      } else {
        localUrl =
          'ws://' +
          document.domain +
          ':' +
          location.port +
          '/api/v1/ws/' +
          self.item.id
      }
    this.ws = new WebSocket(localUrl)
    this.ws.addEventListener('message', async ({data}) => {
      const res = JSON.parse(data.toString())
      console.log(res)
    })
},