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app.js
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app.js
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const app = require('express')()
const server = require('http').Server(app)
const helmet = require('helmet')
app.use((req, res, next) => {
// Set CORS headers
res.header('Access-Control-Allow-Origin', '*')
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept")
res.header('Access-Control-Request-Method', '*')
res.header('Access-Control-Allow-Methods', '*')
next()
})
// Sets "Referrer-Policy: same-origin".
app.use(helmet.referrerPolicy({ policy: 'same-origin' }))
const io = require('socket.io')(server)
const process = require('process')
const logger = require('log4js').getLogger('Main App')
let programArgs = require('commander')
programArgs
.version('0.0.1')
.option('-e, --environment [String]', 'Environment option ["dev", "prod"]("prod" is the default and fallback configuration)')
.parse(process.argv)
let configFileName = ''
switch (programArgs.environment) {
case 'dev':
configFileName = 'dev'
logger.info('Building development config...')
break;
default:
configFileName = 'prod'
logger.info('Building production config...')
}
const config = require(`./config/config.${configFileName}`)
logger.info('Configuration read:')
logger.info(JSON.stringify(config))
logger.info('Starting App...')
require('./src/handler/init.js')(io, config)
server.listen(
config.port,
() => {
logger.info(`Listening with PID ${process.pid} on ${config.hostName} on port ${config.port}`)
logger.info(`This platform is ${process.platform}`)
}
);