通过 PeerJS 接收数据答案

【问题标题】：Receiving data through PeerJS通过 PeerJS 接收数据
【发布时间】：2017-06-07 01:18:24
【问题描述】：

我正在做一个小的 PeerJS 项目，我有点困惑。我能够打开连接并确认客户端已连接，但我无法弄清楚接收任何内容的正确方法或语法。或者也许我只是错过了一些简单的东西。我已经尝试了很多变化试图让它发挥作用。下面是JS和HTML。

JS：

var peer = new Peer({
  key: 'lwjd5qra8257b9'
// I use my own API key for testing, this is the public PeerJS key
//you'll have to generate your own if this doesn't work.
});

peer.on('open', function(id) {
  $('body').append('<br/>Your personal peer ID is: ' + id + '<br/>Be careful who you share it with.');
});
peer.on('connection', connect);

function connect(succ) {
  conn = succ;
  //input changes on successful connect
  $('#peerKeyEnter').val(conn.peer);
  $('#peerKeyEnter').prop('disabled',true);
}

$(document).ready(function() {

  $('#peerKeySubmit').on('click', function() {
    var buddy = document.getElementById('peerKeyEnter').value;
    var buddyConn = peer.connect(buddy); //send connection request
    connect(buddyConn); //connect to peer

    //sending data
    buddyConn.on('open', function() {
      buddyConn.send('this is supposed to work')
    });

    //receiving data
    buddyConn.on('connection', function(conn) {
      buddyConn.on('data', function(data) {
        console.log(data);
      });
    });
  }); //end peerKeySubmit.click
}); //end doc.ready()

HTML：

<html>
<head>
  <script
  src="https://code.jquery.com/jquery-3.2.1.js"
  integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE="
  crossorigin="anonymous"></script>
  <!--script src='peer.js'></script-->
<script src="http://cdn.peerjs.com/0.3/peer.js"></script>
  <script src='app.js'></script>
</head>
<body>

<input type='text' id='peerKeyEnter' placeholder="Enter peer's ID"></input>
<button id='peerKeySubmit' value='Send'>Select Peer</button>

</body>
</html>

【问题讨论】：

标签： javascript jquery peerjs

【解决方案1】：

实际上，你就快到了。您的buddyConn.on('data'... 应该在connect 函数中，使用该函数的参数名称进行连接。此外，对connect 的第二次调用不应在#peerKeySubmit.on 回调函数中。这是修改后的（工作）代码：

var peer = new Peer({
  key: 'lwjd5qra8257b9'
// I use my own API key for testing, this is the public PeerJS key
//you'll have to generate your own if this doesn't work.
});

peer.on('open', function(id) {
  $('body').append('<br/>Your personal peer ID is: ' + id + '<br/>Be careful who you share it with.');
});
peer.on('connection', connect);

function connect(succ) {
  conn = succ;
  conn.on('data', function (data) {
    console.log('Received from ' + conn.peer + ': ' + data);
  });

  //input changes on successful connect
  $('#peerKeyEnter').val(conn.peer);
  $('#peerKeyEnter').prop('disabled',true);
}

$(document).ready(function() {

  $('#peerKeySubmit').on('click', function() {
    var buddy = document.getElementById('peerKeyEnter').value;
    var buddyConn = peer.connect(buddy); //send connection request

    //sending data
    buddyConn.on('open', function() {
      buddyConn.send('this is supposed to work')
    });

  }); //end peerKeySubmit.click
}); //end doc.ready()

【讨论】：

非常感谢，我在那个问题上停留了一段时间。我不敢相信我从来没有注意到接收函数不应该在 peerKeySubmit.click