I have not promised that my server is always running 24/7

There is a bug in Openfire. It does not return port 5223 as a permitted port to Flash Player> make the changes below and rebuild openfire.jar

See src\java\org\jivesoftware\openfire\net\StanzaHandler.java

Line 115

 

          if (stanza.startsWith("<policy-file-request/>")) {
                    String crossDomainText = FlashCrossDomainServlet.CROSS_DOMAIN_TEXT +
                           XMPPServer.getInstance().getConnectionManager().getClientListenerPort()  + "," +
                            XMPPServer.getInstance().getConnectionManager().getClientSSLListenerPort()  +
                            FlashCrossDomainServlet.CROSS_DOMAIN_END_TEXT + '\0';
                    connection.deliverRawText(crossDomainText);
                    return;
                }

See src\java\org\jivesoftware\openfire\FlashCrossDomainHandler

Line 121

             if (request.contains("<policy-file-request/>") || request.contains("GET /crossdomain.xml")) {
                 out.write(CROSS_DOMAIN_TEXT +
                         XMPPServer.getInstance().getConnectionManager().getClientListenerPort()  + "," +
                         XMPPServer.getInstance().getConnectionManager().getClientSSLListenerPort()  +
                         CROSS_DOMAIN_END_TEXT+"\u0000");
             }