bug: Data corruption when sending binary

[DomNomNom]

Hi, I was sending icons over websocket OSC and some of them got corrupted. It seemed like larger ones were fine but smaller ones have trouble.

I've made a minimal example that shows the problem clearly:

const http = require('node:http');
const WebSocket = require("ws");
const osc = require('osc');

// The data we want to send
const bytes = new Uint8Array([ 4,4,4,4,4,4 ]);

// server
const hostname = '127.0.0.1';
const port = 7000;
const server = http.createServer(async (req, res) => {});
server.listen(port, hostname, () => {
    // console.log(`Server running at http://${hostname}:${port}/`);
});
const wss = new WebSocket.Server({ server });
wss.on("connection", function(socket) {
    const osc_port = new osc.WebSocketPort({
        socket: socket,
        metadata: true
    });
    osc_port.on("message", (osc_msg) => {
        // console.log('rx osc_msg=', osc_msg)
        console.log("rx osc_msg.args[0].value=", osc_msg.args[0].value)
        console.log();
        process.exit();
    });
});

// client
const ui_url = `ws://${hostname}:${port}/`;
ui_port = new osc.WebSocketPort({
    // url: ui_url,
    metadata: true,
    socket: new WebSocket(ui_url),
});
ui_port.on("ready", function () {
    const osc_msg = {
      address: '/foo',
      args: [
        { type: 'b', value: bytes }
      ]
    };
    // console.log('tx osc_msg=', osc_msg)
    console.log('tx osc_msg.args[0].value=', osc_msg.args[0].value)
    ui_port.send(osc_msg);
});

want:

tx osc_msg.args[0].value= Uint8Array(6) [ 4, 4, 4, 4, 4, 4 ]
rx osc_msg.args[0].value= Uint8Array(6) [ 4, 4, 4, 4, 4, 4 ]

got:

tx osc_msg.args[0].value= Uint8Array(6) [ 4, 4, 4, 4, 4, 4 ]
rx osc_msg.args[0].value= Uint8Array(6) [ 0, 0, 0, 0, 0, 6 ]