TcpSocket监听Firefox插件 [英] TcpSocket listen on Firefox addon

问题描述

我正在尝试创建一个使用TcpSocket进行通信的Firefox插件。我使用下面的代码成功地通过tcp发送了消息：
$ b $ $ $ $ $ $ $ c $ var tcpSocket = Cc [@ mozilla.org/tcp-插座; 1\" ]的createInstance（Ci.nsIDOMTCPSocket）。
var socket = tcpSocket.open（127.0.0.1，3000）;
socket.onopen = function（）{
socket.send（sendText）;

$ / code>

效果很好。

现在，我不想发送，而是希望收到tcp消息。我正在使用以下代码（基于 MDN的TCP套接字文章
$ b

  var tcpSocket = Cc [@ mozilla.org/tcp-socket;1 ] .createInstance（Ci.nsIDOMTCPSocket）; 
 var socket = tcpSocket.listen（3000）; 
 socket.ondata = function（event）{
 console.log（event）; 
}; 
  

但是它记录下面的错误（在运行 cfx run < code $）
$ b $ $ $ $ $ $ $ $ $ code $ console $ error $ my $ add
$ b $ message $ =无法修改WrappedNative的属性
--fileName = undefined
- lineNumber = 6
...


而且，我可以说端口至少是活动的，因为如果我忽略这个错误并尝试发送一个tcp消息给那个端口，那么控制台会记录以下内容：

 收到意外连接！ 
  

我在这里错过了什么吗？提前致谢。

解决方案

我终于找到了一个不同的方法：

  var port = 3000; //不管你的端口是什么
 const {Cc，Ci} = require（chrome）; 
 var serverSocket = Cc [@ mozilla.org/network/server-socket;1\"].createInstance(Ci.nsIServerSocket）; 
 serverSocket.init（port，true，-1）; 
 var listener = {
 onSocketAccepted：function（socket，transport）{
 var input = transport.openInputStream（Ci.nsITransport.OPEN_BLOCKING，0,0）; 
 var output = transport.openOutputStream（Ci.nsITransport.OPEN_BLOCKING，0，0）; 
 var tm = Cc [@ mozilla.org/thread-manager;1]。getService（）; 
 input.asyncWait（{
 onInputStreamReady：function（inp）{
 try 
 {
 var sin = Cc [@ mozilla.org/scriptableinputstream;1] （）; 
 sin.init（inp）; 
 sin.available（）; 
 
 //获取请求消息
 var request =' '; 
 while（sin.available（））{request = request + sin.read（5120）;} 
 var reqObj = {type：null，info：[]}; 
 if （request！= null&&& request.trim（）！=）{
 
 //这里是消息文本
 console.log（request）; 
 
 
 $ b catch（ex）{} 
 finally 
 {
 sin.close（）; 
i nput.close（）; 
 output.close（）; 
} 
} 
}，0，0，tm.mainThread）; 
}，
 onStopListening：function（socket，status）{
} 
}; 
 serverSocket.asyncListen（listener）; 
  

I'm trying to create a Firefox addon that uses a TcpSocket for communication. I've successfully sent messages through tcp using the following code:

var tcpSocket = Cc["@mozilla.org/tcp-socket;1"].createInstance(Ci.nsIDOMTCPSocket);
var socket = tcpSocket.open("127.0.0.1", 3000);
socket.onopen = function() {
    socket.send(sendText);
}

That works beautifully.

Now, instead of sending, I want to receive tcp messages. I'm using the following code (based on MDN's TCP Socket article)

var tcpSocket = Cc["@mozilla.org/tcp-socket;1"].createInstance(Ci.nsIDOMTCPSocket);
var socket = tcpSocket.listen(3000);
socket.ondata = function (event) {
    console.log(event);
};

But it logs the following error (in the cmd running cfx run):

console.error: my-addon:
Object
    - message = Cannot modify properties of a WrappedNative
    - fileName = undefined
    - lineNumber = 6
    ...

And, I can say that the port is at least active, because if I ignore the error and try to send a tcp message to that port, the console logs the following:

Received unexpected connection!

Am I missing something here? Thanks in advance.

解决方案

I've finally got it working with a different approach:

var port = 3000; //whatever is your port
const {Cc, Ci} = require("chrome");
var serverSocket = Cc["@mozilla.org/network/server-socket;1"].createInstance(Ci.nsIServerSocket);
serverSocket.init(port, true, -1);
var listener = {
    onSocketAccepted: function(socket, transport) {
        var input = transport.openInputStream(Ci.nsITransport.OPEN_BLOCKING,0,0);
        var output = transport.openOutputStream(Ci.nsITransport.OPEN_BLOCKING, 0, 0);
        var tm = Cc["@mozilla.org/thread-manager;1"].getService();
        input.asyncWait({
            onInputStreamReady: function(inp) {
                try
                {
                    var sin = Cc["@mozilla.org/scriptableinputstream;1"].createInstance(Ci.nsIScriptableInputStream);
                    sin.init(inp);
                    sin.available();

                    //Get request message
                    var request = '';
                    while (sin.available()) { request = request + sin.read(5120); }
                    var reqObj = { type: null, info: [] };
                    if(request != null && request.trim() != "") {

                        //Here is the message text
                        console.log(request);

                    }
                }
                catch(ex) { }           
                finally
                {
                    sin.close();
                    input.close();
                    output.close();
                }
            }
        }, 0, 0, tm.mainThread);
    },
    onStopListening: function(socket, status) {
    }
};
serverSocket.asyncListen(listener);

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