Hi

Whenever I create a futures stream like this: wss://stream.binancefuture.com/stream?streams= ...
the data that I get from open, close etc. differs slightly with what I can see while having Binance open in the web browser. Some times by as much as ~3 to 5 units.

And when I open a normal stream like this: wss://stream.binance.com:9443/stream?streams= ...
the data is very accurate and even has more decimal places.

How can I solve this issue so that the data from the futures stream is just as accurate as the normal streams?

I tested on ETHUSDT perpetual on Futures and ETHUSDT on the FIAT markets

src/lib/socketClient.js line 38: const message = JSON.parse(msg.data);

returns the whole message payload, not the data part of the payload. So when you run it, on each message received you get an “Unprocessed method” error.
It should be something like:

const payload = JSON.parse(msg.data);
const message = payload.data;

I also suggest to change the error message text on line 48 to “Unknown method” to distinguish it from the message on line 45.

Best,
Peter

When I subscribe to several user data streams (get listenkey for each account data stream for futures) and get message from one of the stream I can't find out which data stream send me that update message (there's no field like account id... ). Do you have any ideas?

{
  "e": "ACCOUNT_UPDATE",                // Event Type
  "E": 1564745798939,                   // Event Time
  "T": 1564745798938 ,                  // Transaction
  "a":                                  // Update Data
    {
      "m":"ORDER",                      // Event reason type
      "B":[                             // Balances
        {
          "a":"USDT",                   // Asset
          "wb":"122624.12345678",       // Wallet Balance
          "cw":"100.12345678"           // Cross Wallet Balance
        },
        {
          "a":"BNB",           
          "wb":"1.00000000",
          "cw":"0.00000000"         
        }
      ],