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TwoWayStreetAsync.js
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TwoWayStreetAsync.js
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/**
* Self-contained HelloWorld example.
*/
"use strict";
// ##########################################################################
// Define TwoWayStreetAsync component
var NoGapDef = require('nogap').Def;
NoGapDef.component({
Host: NoGapDef.defHost(function(Tools, Instance, Context) {
var iAttempt = 0;
return {
initHost: function() {
console.log('Host has initialized!');
},
Public: {
tellClientSomething: function(sender) {
// signal that the client needs to wait for an asynchronous operation
this.Tools.keepOpen();
// wait 500 milliseconds before replying
setTimeout(function() {
this.client.showHostMessage('We have exchanged ' + ++iAttempt + ' messages.');
// signal that the client does not have to wait anymore for this operation
this.Tools.flush();
}.bind(this), 500);
}
}
};
}),
Client: NoGapDef.defClient(function(Tools, Instance, Context) {
return {
initClient: function() {
window.clickMe = function() {
document.body.innerHTML +='Button was clicked.<br />';
this.host.tellClientSomething();
}.bind(this);
document.body.innerHTML += '<button onclick="window.clickMe();">Click Me!</button><br />';
},
Public: {
showHostMessage: function(msg) {
document.body.innerHTML +='Server said: ' + msg + '<br />';
}
}
};
})
});
// ###########################################################################
// setup & start express
// load express
var express = require('express');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var expressApp;
(function setupExpress() {
// start express
expressApp = express();
expressApp.use(cookieParser()); // required for `express-session` module
expressApp.set('title', 'samples/HelloWorld'); // set title
// install session manager:
expressApp.use(session({
// secret token
secret: 'mySuperCoolSecret123qwerty',
resave: true,
saveUninitialized: true,
// default cookie settings
cookie: {
path: '/',
httpOnly: true
},
// We are not using a store, so our session won't persist through server re-starts.
// store: ????
}));
})();
// ##########################################################################
// Start NoGap
(function startNoGap() {
var NoGapLoader = require('nogap').Loader;
// use an inline configuration (instead of writing it to an extra file)
NoGapLoader.start(expressApp, {
baseFolder: '.'
});
})();
// ##########################################################################
// Start HTTP Server
(function startServer() {
expressApp.set('port', 1234);
try {
expressApp.serverInstance = expressApp.listen(expressApp.get('port'), function() {
console.log('NoGap Sample App is now up and running at port ' + expressApp.serverInstance.address().port);
});
}
catch (err) {
// exit on error
process.exit(err);
}
})();