Question

I’ve implemented a simple Flex application that tries to connect to a server via the WebSocket protocol. Running the app in the Flash Builder 4.6 debugger everything works fine. So I installed the application on my server and now I get Error #2048 after a while. #2048 seems to be an error concerning security.

The server provides this crossdomain.xml:

Updated

<?xml version="1.0" encoding="UTF-8" ?>
  <cross-domain-policy xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.adobe.com/xml/schemas/PolicyFileSocket.xsd">
  <allow-access-from domain="*" to-ports="*"  />
  <site-control permitted-cross-domain-policies="master-only" />
</cross-domain-policy>

Edit: It’s provided by calling

Security.loadPolicyFile('http://myserver:8081/crossdomain.xml');

I can see in the web server logs that the client loads it.

I’m using AS3WebSocket as the WebSocket implementation for Flex.

This is how I set up the WebSocket object:

websocket = new WebSocket(url, "*", 'dummy', 5000);
// adding several event handler ...
websocket.connect();

The browser connects to the server with

http://myserver:8081

The url parameter holds

ws://myserver:8081/data

Why does it work locally with the Flash Builder and not on my server? What am I missing?

Answer 1

I got this working. I somehow missed the information that I needed a special policy server running for socket policies on port 843 providing the policy file via TCP.