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'use strict'
function Udp (client) {
const dgram = require('dgram')
this.stack = []
this.port = null
this.socket = dgram ? dgram.createSocket('udp4') : null
this.listener = dgram ? dgram.createSocket('udp4') : null
this.start = function () {
if (!dgram || !this.socket || !this.listener) { console.warn('UDP', 'Could not start.'); return }
console.info('UDP', 'Starting..')
this.selectInput()
this.selectOutput()
}
this.clear = function () {
this.stack = []
}
this.run = function () {
for (const item of this.stack) {
this.play(item)
}
}
this.push = function (msg) {
this.stack.push(msg)
}
this.play = function (data) {
if (!this.socket) { return }
this.socket.send(Buffer.from(`${data}`), this.port, client.io.ip, (err) => {
if (err) { console.warn(err) }
})
}
this.selectOutput = function (port = 49161) {
if (!dgram) { console.warn('UDP', 'Unavailable.'); return }
if (parseInt(port) === this.port) { console.warn('UDP', 'Already selected'); return }
if (isNaN(port) || port < 1000) { console.warn('UDP', 'Unavailable port'); return }
console.log('UDP', `Output: ${port}`)
this.port = parseInt(port)
}
this.selectInput = (port = 49160) => {
if (!dgram) { console.warn('UDP', 'Unavailable.'); return }
if (this.listener) { this.listener.close() }
console.log('UDP', `Input: ${port}`)
this.listener = dgram.createSocket('udp4')
this.listener.on('message', (msg, rinfo) => {
client.commander.trigger(`${msg}`)
})
this.listener.on('listening', () => {
const address = this.listener.address()
console.info('UDP', `Started socket at ${address.address}:${address.port}`)
})
this.listener.on('error', (err) => {
console.warn('UDP', `Server error:\n ${err.stack}`)
this.listener.close()
})
this.listener.bind(port)
}
}
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