2017-02-06 12:40:24 +00:00

132 lines
4.3 KiB
JavaScript

/**
* V8Debugger
*
* Copyright (c) 2010 Ajax.org B.V.
*
* The MIT License (MIT)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
define(function(require, exports, module) {
"use strict";
var net = require("net");
var EventEmitter = require("events").EventEmitter;
var NodeSocket = module.exports = function(ip, port) {
EventEmitter.call(this);
var _self = this;
// connection status flag
var connected = false;
// the number of left connect retries
// TODO: retrieve retry count from configuration
var connectRetryCount = 30;
// the amount of interval in msec between each retry
// TODO: retrieve retry count from configuration
var connectRetryInterval = 50; // 50 msec
// note: total time for retry: 50msc * 30 = 1.5 sec
function initStream() {
_self.$stream = new net.Stream();
_self.$stream.setEncoding("utf8");
_self.$stream.addListener("data", function(data) {
_self.$onData(data);
});
_self.$stream.addListener("end", onEnd);
_self.$stream.addListener("error", onError);
_self.$stream.addListener("connect", function () {
// set connection flag to true (connected)
connected = true;
_self.emit("connect");
});
}
// create the initial connection object
initStream();
function onEnd(errorInfo) {
// set connection flag to false (not connected)
connected = false;
_self.$stream.end();
_self.state = "initialized";
_self.emit("end", errorInfo);
}
function onError() {
// if currently not connected and there re-tries left to perform
if (!connected && connectRetryCount > 0) {
// decrease number of re-tries
connectRetryCount--;
// since the connection has failed the entire connection object is dead.
// close the existing connection object
_self.$stream.end();
// create a new connection object.
initStream();
// sleep and afterward try to connect again
setTimeout(function() {
//console.log("retrying. " + ( connectRetryCount + 1 ) + " attempts left");
_self.connect();
}, connectRetryInterval);
}
else {
// TODO: replace error message with exception instance.
onEnd("Could not connect to the debugger");
}
}
this.$ip = ip;
this.$port = port;
};
require("./util").inherits(NodeSocket, EventEmitter);
(function() {
this.receivedText = "";
this.close = function() {
this.$stream.end();
};
this.clearBuffer = function() { };
this.send = function(msg) {
//console.log("> sent to socket:\n", msg)
this.$stream.write(msg, "utf8");
};
this.setMinReceiveSize = function(minSize) { };
this.$onData = function(data) {
this.receivedText = data;
//console.log("> received from socket:\n", this.receivedText, this.receivedText.length)
this.emit("data", this.receivedText);
};
this.connect = function() {
//console.log("Connecting to: " + this.$ip + ":" + this.$port);
this.$stream.connect(this.$port, this.$ip);
};
}).call(NodeSocket.prototype);
});