/
URLLoader.as
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/
URLLoader.as
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package com.pubnub.net {
import com.adobe.net.*;
import com.hurlant.crypto.tls.TLSSocket;
import com.pubnub.log.Log;
import flash.errors.IOError;
import flash.events.*;
import flash.net.Socket;
import flash.utils.*;
/**
* ...
* @author firsoff maxim, firsoffmaxim@gmail.com, icq : 235859730
*/
[Event(name="URLLoaderEvent.complete", type="com.pubnub.net.URLLoaderEvent")]
[Event(name="URLLoaderEvent.error", type="com.pubnub.net.URLLoaderEvent")]
public class URLLoader extends EventDispatcher {
public static const HTTP_PORT:uint = 80;
public static const HTTPS_PORT:uint = 443;
public static const HTTP_VERSION:String = "1.1";
public static const END_SYMBOL_CHUNKED:String = '0\r\n';
public static const END_SYMBOL:String = '\r\n';
static private const pattern:RegExp = new RegExp("(https):\/\/");
protected var socket:*;
protected var secureSocket:TLSSocket;
protected var normalSocket:Socket;
protected var uri:URI;
protected var request:URLRequest;
protected var _response:URLResponse;
protected var answer:ByteArray = new ByteArray();
protected var temp:ByteArray = new ByteArray();
protected var _destroyed:Boolean;
public function URLLoader() {
super(null);
init();
}
public function load(request:URLRequest):void {
this.request = request;
uri = new URI(request.url);
//trace(request.url);
socket = getSocket(request.url);
destroyResponce();
sendRequest(request);
Log.logURL('REQUEST: ' + unescape(request.url), Log.DEBUG);
}
private function getSocket(url:String):*{
return pattern.test(url) ? secureSocket : normalSocket;
}
private function getPort(url:String):*{
return pattern.test(url) ? HTTPS_PORT : HTTP_PORT;
}
public function connect(request:URLRequest):void {
if (!request) return;
var url:String = request.url;
var uri:URI = new URI(url);
var host:String = uri.authority;
//trace(host);
var port:int = getPort(url);
socket = getSocket(url);
//trace('connect : ' + host, port, socket);
//Security.loadPolicyFile("xmlsocket://pubsub.pubnub.com:80");
socket.connect(host, port);
}
public function close():void {
//trace('*CLOSE* ' + socket);
try {
if(normalSocket.connected) normalSocket.close();
}catch (err:IOError){
Log.log("Close: " + err, Log.WARNING);
}
try {
if (socket == secureSocket && secureSocket.connected) {
secureSocket.close();
}
}catch (err:IOError){
Log.log("Close: " + err, Log.WARNING);
}
destroyResponce();
request = null;
}
protected function init():void {
normalSocket = new Socket();
normalSocket.addEventListener(Event.CONNECT, onConnect);
normalSocket.addEventListener(Event.CLOSE, onClose);
normalSocket.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
normalSocket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
normalSocket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
secureSocket = new TLSSocket();
secureSocket.addEventListener(Event.CONNECT, onConnect);
secureSocket.addEventListener(Event.CLOSE, onClose);
secureSocket.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
secureSocket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
secureSocket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
socket = normalSocket;
}
protected function onSocketData(e:ProgressEvent):void {
//trace('------onSocketData------' + socket.bytesAvailable);
temp.clear();
while (socketHasData()) {
try {
// Load data from socket
socket.readBytes(temp);
temp.readBytes(answer, answer.bytesAvailable);
} catch (e:Error) {
Log.log("onSocketData: " + e, Log.WARNING);
break;
}
}
temp.position = 0;
var tempStr:String = temp.readUTFBytes(temp.bytesAvailable);
var endSymbol:String = getEndSymbol(tempStr);
//trace('tempStr: ' + tempStr);
if (tempStr.indexOf(endSymbol) != -1) {
onResponce(answer)
answer.clear();
}
}
protected function getEndSymbol(tcpStr:String):String {
var headers:Array = URLResponse.getHeaders(tcpStr);
if (URLResponse.isChunked(headers)) {
return END_SYMBOL_CHUNKED;
}else {
return END_SYMBOL;
}
}
protected function onResponce(bytes:ByteArray):void {
try {
if (request) {
_response = new URLResponse(bytes, request);
//trace(_response.body);
Log.log('RESPONCE: ' + _response.body, Log.DEBUG);
}
//trace('onResponce : ' + _response.body);
dispatchEvent(new URLLoaderEvent(URLLoaderEvent.COMPLETE, _response));
}catch (err:Error){
dispatchEvent(new URLLoaderEvent(URLLoaderEvent.ERROR, _response));
}
}
protected function socketHasData():Boolean {
return (socket && socket.connected && socket.bytesAvailable);
}
protected function onSecurityError(e:SecurityErrorEvent):void {
// abstract
dispatchEvent(new URLLoaderEvent(URLLoaderEvent.ERROR, request));
}
protected function onIOError(e:IOErrorEvent):void {
// abstract
dispatchEvent(new URLLoaderEvent(URLLoaderEvent.ERROR, request));
}
protected function onClose(e:Event):void {
//trace(socket, ' onClose');
dispatchEvent(e);
}
protected function onConnect(e:Event):void {
//trace(this, ' onConnect', socket);
dispatchEvent(e);
}
public function get ready():Boolean { return socket && socket.connected ; }
public function get connected():Boolean { return socket && socket.connected ; }
private function destroyResponce():void {
if (_response) {
_response.destroy();
_response = null;
}
}
public function destroy():void {
if (_destroyed) return;
_destroyed = true;
close()
normalSocket.removeEventListener(Event.CONNECT, onConnect);
normalSocket.removeEventListener(Event.CLOSE, onClose);
normalSocket.removeEventListener(IOErrorEvent.IO_ERROR, onIOError);
normalSocket.removeEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
normalSocket.removeEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
secureSocket.removeEventListener(Event.CONNECT, onConnect);
secureSocket.removeEventListener(Event.CLOSE, onClose);
secureSocket.removeEventListener(IOErrorEvent.IO_ERROR, onIOError);
secureSocket.removeEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
secureSocket.removeEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
socket = null;
temp.clear();
answer.clear();
temp = answer = null;
request = null;
}
/**
* Send request.
* @param request Request to write
*/
protected function sendRequest(request:URLRequest):void {
if (ready) {
doSendRequest(request);
}else {
connect(request);
}
}
protected function doSendRequest(request:URLRequest):void {
//trace('doSendRequest');
var requestBytes:ByteArray = request.toByteArray();
requestBytes.position = 0;
// Debug
//var hStr:String = "Header:\n" + requestBytes.readUTFBytes(requestBytes.length);
//trace('socket.connected : ' + socket.connected);
socket.writeBytes(requestBytes);
socket.flush();
}
public function get destroyed():Boolean {
return _destroyed;
}
public function get response():URLResponse {
return _response;
}
}
}