ws-client.js

var ws = require("ws")

var c = new ws("ws://localhost:3333/rpc/1.0")

c.on("open", function() {
  console.log("opened")

  c.send(JSON.stringify({
    jsonrpc: "2.0",
    method: "authorize",
    params: { uid: "scr01" },
    id: 1
  }))
})

c.on("message", function(message) {
  console.log(message)
})

c.on("error", function(error) {
  console.log("error,", error)
})

c.on("closed", function() {
  console.log("closed")
})