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/*!
* socket.io-node
* Copyright(c) 2011 LearnBoost <dev@learnboost.com>
* MIT Licensed
*/
/**
* Module requirements.
*/
var WebSocket = require('./websocket');
/**
* Export the constructor.
*/
exports = module.exports = FlashSocket;
/**
* The FlashSocket transport is just a proxy
* for WebSocket connections.
*
* @api public
*/
function FlashSocket (mng, data, req) {
return WebSocket.call(this, mng, data, req);
}
/**
* Inherits from WebSocket.
*/
FlashSocket.prototype.__proto__ = WebSocket.prototype;
/**
* Transport name
*
* @api public
*/
FlashSocket.prototype.name = 'flashsocket';
/**
* Listens for new configuration changes of the Manager
* this way we can enable and disable the flash server.
*
* @param {Manager} Manager instance.
* @api private
*/
FlashSocket.init = function (manager) {
var server;
function create () {
// Drop out immediately if the user has
// disabled the flash policy server
if (!manager.get('flash policy server')) {
return;
}
server = require('policyfile').createServer({
log: function(msg){
manager.log.info(msg);
}
}, manager.get('origins'));
server.on('close', function (e) {
server = null;
});
server.listen(manager.get('flash policy port'), manager.server);
manager.flashPolicyServer = server;
}
// listen for origin changes, so we can update the server
manager.on('set:origins', function (value, key) {
if (!server) return;
// update the origins and compile a new response buffer
server.origins = Array.isArray(value) ? value : [value];
server.compile();
});
// destory the server and create a new server
manager.on('set:flash policy port', function (value, key) {
var transports = manager.get('transports');
if (~transports.indexOf('flashsocket')) {
if (server) {
if (server.port === value) return;
// destroy the server and rebuild it on a new port
try {
server.close();
}
catch (e) { /* ignore exception. could e.g. be that the server isn't started yet */ }
}
create();
}
});
// create or destroy the server
manager.on('set:flash policy server', function (value, key) {
var transports = manager.get('transports');
if (~transports.indexOf('flashsocket')) {
if (server && !value) {
// destroy the server
try {
server.close();
}
catch (e) { /* ignore exception. could e.g. be that the server isn't started yet */ }
}
} else if (!server && value) {
// create the server
create();
}
});
// only start the server
manager.on('set:transports', function (value, key){
if (!server && ~manager.get('transports').indexOf('flashsocket')) {
create();
}
});
// check if we need to initialize at start
if (~manager.get('transports').indexOf('flashsocket')){
create();
}
};
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