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October 20, 2018 16:17
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// only for Angular2 dist | |
// | |
// # SimpleServer | |
// | |
// A simple chat server using Socket.IO, Express, and Async. | |
// | |
var http = require('http'); | |
var path = require('path'); | |
var async = require('async'); | |
var socketio = require('socket.io'); | |
var express = require('express'); | |
// | |
// ## SimpleServer `SimpleServer(obj)` | |
// | |
// Creates a new instance of SimpleServer with the following options: | |
// * `port` - The HTTP port to listen on. If `process.env.PORT` is set, _it overrides this value_. | |
// | |
var router = express(); | |
var server = http.createServer(router); | |
var io = socketio.listen(server); | |
router.use(express.static(path.resolve(__dirname, 'dist'))); | |
var messages = []; | |
var sockets = []; | |
io.on('connection', function (socket) { | |
messages.forEach(function (data) { | |
socket.emit('message', data); | |
}); | |
sockets.push(socket); | |
socket.on('disconnect', function () { | |
sockets.splice(sockets.indexOf(socket), 1); | |
updateRoster(); | |
}); | |
socket.on('message', function (msg) { | |
var text = String(msg || ''); | |
if (!text) | |
return; | |
socket.get('name', function (err, name) { | |
var data = { | |
name: name, | |
text: text | |
}; | |
broadcast('message', data); | |
messages.push(data); | |
}); | |
}); | |
socket.on('identify', function (name) { | |
socket.set('name', String(name || 'Anonymous'), function (err) { | |
updateRoster(); | |
}); | |
}); | |
}); | |
function updateRoster() { | |
async.map( | |
sockets, | |
function (socket, callback) { | |
socket.get('name', callback); | |
}, | |
function (err, names) { | |
broadcast('roster', names); | |
} | |
); | |
} | |
function broadcast(event, data) { | |
sockets.forEach(function (socket) { | |
socket.emit(event, data); | |
}); | |
} | |
server.listen(process.env.PORT || 3000, process.env.IP || "0.0.0.0", function(){ | |
var addr = server.address(); | |
console.log("Chat server listening at", addr.address + ":" + addr.port); | |
}); |
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