TcpSocket在Firefox插件上收听

时间:2015-02-04 16:22:44

标签: sockets firefox tcp firefox-addon tcplistener

我正在尝试创建一个使用TcpSocket进行通信的Firefox插件。我已使用以下代码通过tcp成功发送了消息:

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);
}

效果很好。

现在,我想收到tcp消息,而不是发送。我正在使用以下代码(基于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);
};

但是它会记录以下错误(在运行cfx run的cmd中):

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

而且,我可以说端口至少是活动的,因为如果我忽略错误并尝试向该端口发送tcp消息,则控制台会记录以下内容:

Received unexpected connection!

我在这里遗漏了什么吗?提前谢谢。

1 个答案:

答案 0 :(得分:5)

我终于让它采用了不同的方法:

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);