无法接收/发送peerjs数据

Question

试图构建简单的发送器/接收器，但它们不发送/接收任何东西。

代码发送者：

const peer = new Peer('sender', {key: 'testK', host: '127.0.0.1', port: 9000, debug: 2});

peer.on('open', function(id) {
    console.log('My peer ID is: ' + id);
});


var conn = peer.connect('receiver');
console.log(conn);
conn.on('open', function() {
    console.log('on open');
    conn.send('Hello from sender!');
    // Receive messages
    conn.on('data', function (data) {
        console.log('Received', data);
    });
});

代码接收器：

var peer = new Peer('receiver', {key: 'testK', host: '127.0.0.1', port: 9000, debug: 3});

peer.on('open', function(id) {
    console.log('My peer ID is: ' + id);
});

//receiving data
peer.on('connection', function(conn) {
    console.log('on connection');
    conn.on('open', function() {
        conn.on('data', function(data) {
            console.log(data);
        });
    });
});

在对等服务器中，我看到消息

Client connected: receiver
Client disconnected: sender

在浏览器控制台中，我看到消息

My peer ID is: sender
My peer ID is: receiver

但没有别的！