Question

我正在使用addon sdk创建一个firefox扩展，它有一个用于用户登录的小部件，并且在sucesful登录时，使用socket.io和node.js创建一个websocket到我控制的套接字服务器。

我不确定我是否采用正确的方法，但是，在lib / main.js中，我有以下代码：

function start_socket(){
        console.log("trying to open websocket!");
        var io = require("socket.io.js");
        socket = io.connect("https://someip:port");
        socket.on('connect', function() {
                console.log('connected to server');
        });
}

如果我运行它，我会收到以下错误：

console.log: http: trying to open websocket!
console.error: http: 
  Message: TypeError: global.location is undefined
  Stack:
    Socket.prototype.isXDomain@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/socket.io.js:1877
Socket.prototype.handshake@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/socket.io.js:1627
Socket.prototype.connect@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/socket.io.js:1699
Socket@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/socket.io.js:1551
io.connect@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/socket.io.js:94
start_socket@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/main.js:25
signin<.onComplete@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://jid1-hvkic5lw55dv0g-at-jetpack/http/lib/main.js:17
emit@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/event/core.js:94
onreadystatechange@resource://gre/modules/XPIProvider.jsm -> jar:file:///var/folders/v6/jpc7yv2123nbhl7hb8rshygh0000gn/T/tmp3gAPRS.mozrunner/extensions/jid1-HVkiC5LW55dv0g@jetpack.xpi!/bootstrap.js -> resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/request.js:98

作为一个FYI，请参阅下面我尝试使用ws，这也不起作用：

let { window } = require("sdk/addon/window");
let exampleSocket = new window.WebSocket("ws://someip:port");

我的问题是：

我采用这种方法是否正确的方向？
我应该尝试使用浏览器websockets（ww / wws）吗？我尝试使用ww / wws，但它不会连接到我的节点套接字服务器。我会从服务器收到debug - destroying non-socket.io upgrade消息，如果我将destroy upgrade设置为false，我就什么也得不到，就好像没有请求一样。
如果我以正确的方式使用socket.io，我是否正确加载？这可能是问题吗？

任何帮助都会很棒，即使它只是推动我/保持正确的方向。我目前有点亏。

Answer 1

我终于得到了socket.io工作的websockets。以下显示了如何。

我的main.js文件：

var pageWorkers = require("sdk/page-worker");
var self = require("sdk/self");

pageWorkers.Page({
  contentScriptFile: self.data.url("worker.js"),
  contentURL: self.data.url("worker.html"),
  contentScriptFileWhen: "ready",
  onMessage: function(message) {
    console.log(message);
  }
});

和worker.html文件：

<html>
<head>
<script src="https://code.jquery.com/jquery-2.1.0.min.js"></script>
<script src="http://domain:port/socket.io/socket.io.js"></script>
<script>
  var socket = io.connect("http://domain:port");
  socket.on('connect', function(){
    socket.on('event', function(data){});
    socket.on('error', function(data){console.log("error: " + error)});
    socket.on('disconnect', function(){});
  });
</script>
</head>
<body>
</body>
</html>

Firefox插件中的Socket.io

1 个答案: