Flash WebSocket Disconnect - actionscript-3

Question

I'm using AS3WebSocket module to connect web sockets. It works well when I launch flash locally (flash file is marked as trusted in global settings).
But when I open server page with flash, it doesn't work. I've no error messages, just "disconnect" in log.
WinServer2012, IIS, ASP.NET MVC4
Here are logs:
ws init begin: ws://www.sample.biz/WsHandler.ashx?userId=5
Disconnected null[object WebSocket]
And code:
function SYS_wsInit_begin():void
{
writeLog("ws init begin: " + ws_init_url);
trace(ws_init_url);
try
{
websocket = new WebSocket(ws_init_url,"*");
websocket.addEventListener(WebSocketEvent.CLOSED, handleWebSocketClosed);
websocket.addEventListener(WebSocketEvent.OPEN, handleWebSocketOpen);
websocket.addEventListener(WebSocketEvent.MESSAGE, handleWebSocketMessage);
websocket.addEventListener(WebSocketErrorEvent.CONNECTION_FAIL, handleConnectionFail);
websocket.connect();
}
catch (err:Error)
{
writeLog("ws init failed: " + err.message + err.name);
}
}
function handleWebSocketClosed(event:WebSocketEvent):void
{
writeLog("Disconnected " + event.message + event.target);
trace("Disconnected");
}
function handleWebSocketOpen(event:WebSocketEvent):void
{
writeLog("Connected");
trace("Connected");
}
function handleConnectionFail(event:WebSocketErrorEvent):void
{
writeLog("Connection Failure: " + event.text);
trace("Connection Failure: " + event.text);
}
crossdomain.xml:
<?xml version="1.0" encoding="utf-8" ?>
<cross-domain-policy>
<site-control permitted-cross-domain-policies="all"/>
<allow-access-from domain="*"/>
<allow-http-request-headers-from domain="*" headers="*"/>
</cross-domain-policy>
I've also installed Socket Policy File Server with file:
<?xml version="1.0"?>
<cross-domain-policy xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://www.adobe.com/xml/schemas/PolicyFileSocket.xsd">
<site-control permitted-cross-domain-policies="*" />
<allow-access-from domain="*" to-ports="*" />
</cross-domain-policy>
What can I do?

Answer 1

Oh, I've resolved the problem.
After reading, http://forums.adobe.com/message/5297747 I've tried to check 843 port with fiddler, but I got only a redirection to index page.
I checked my IIS configuration. There was a binding on 843 port. After the binding was deleted and socket policy file server restarted the Web-socket connection was established!