I'm simply trying to log messages from a websocket server but I seem to only receive Buffer data. The below example is trying to connect to https://www.piesocket.com/websocket-tester

What am I doing wrong?

import WebSocket from 'ws'
const demoStreamer = new WebSocket('wss://demo.piesocket.com/v3/channel_1? 
api_key=oCdCMcMPQpbvNjUIzqtvF1d2X2okWpDQj4AwARJuAgtjhzKxVEjQU6IdCjwm&notify_self')

demoStreamer.on('message', (data) => {
  console.log(data);
});

// OUTPUT: 
// <Buffer 7b 22 69 6e 66 6f 22 3a 22 59 6f 75 20 61 72 65 20 75 73 69 6e 67 20 61 20 74 65 73 
// 74 20 61 70 69 20 6b 65 79 22 7d>
// <Buffer 54 65 73 74 20 6d 65 73 73 61 67 65>
// <Buffer 54 65 73 74 20 6d 65 73 73 61 67 65>

CodePudding user response：

7b 22 69 6e 66 6f 22 3a 22 59 6f 75 20 61 72 65 20 75 73 69 6e 67 20 61 20 74 65 73 74 20 61 70 69 20 6b 65 79 22 7d is a hexadecimal representation of {"info":"You are using a test api key"}

Just convert the buffer to string:

demoStreamer.on('message', (data) => {
  console.log(data.toString()); // "{\"info\":\"You are using a test api key\"}"
  // Retrieve the info message:
  console.log(JSON.parse(data).info); // "You are using a test api key"
});