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server_mockup.js
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server_mockup.js
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/* globals require, console, global */
/* eslint-disable no-console */
const { Server } = require('ws')
const { stdin } = require('process')
const TIME_BEFORE_PICKING_UP = 4000 // ms
const wss = new Server({
port: 8001,
perMessageDeflate: {
zlibDeflateOptions: {
// See zlib defaults.
chunkSize: 1024,
memLevel: 7,
level: 3
},
zlibInflateOptions: {
chunkSize: 10 * 1024
},
// Other options settable:
clientNoContextTakeover: true, // Defaults to negotiated value.
serverNoContextTakeover: true, // Defaults to negotiated value.
serverMaxWindowBits: 10, // Defaults to negotiated value.
// Below options specified as default values.
concurrencyLimit: 10, // Limits zlib concurrency for perf.
threshold: 1024 // Size (in bytes) below which messages
// should not be compressed.
}
})
const STATUS = {
OFFHOOK: 'offhook',
CALLOUT: 'callout',
INCOMING: 'incomming_call',
ANSWERED: 'answered',
}
wss.on('connection', ws => {
let callEndingTimeout
let callingTimeout
let status
let registeredIdentity
function messageFromStatus() {
let message
switch (status) {
case STATUS.OFFHOOK:
message = { "status" : STATUS.OFFHOOK , "reference" : "SM-02" }
break
case STATUS.ANSWERED:
case STATUS.CALLOUT:
message = { "action" : "call" , "response" : "call started by daemon" , "caller" : "'DEPANNAGE TV' <sip:[email protected]>" , "call_number" : "%s" , "reference" : "SM-16" }
break
case STATUS.INCOMING:
message = { "status" : "incomming_call" , "caller" : "'DEPANNAGE TV' <sip:[email protected]>" , "reference" : "SM-18" }
break
}
return message
}
function statusChangedMessage(from, to) {
return { "callback" : "statuschange" , from, to, "reference" : "SM-17" }
}
function sendStatusChangedMessage(to) {
const nextStatus = to
send(statusChangedMessage(status , nextStatus))
status = nextStatus
}
function send(mess) {
console.log('sending', mess)
ws.send(JSON.stringify(mess))
}
function setStatus(state) {
global.clearTimeout(callingTimeout)
global.clearTimeout(callEndingTimeout)
status = state
}
ws.on('message', function incoming(message) {
const parsed = JSON.parse(message)
console.log('received', parsed)
switch (parsed.action) {
case 'status':
send(messageFromStatus())
break
case 'status_register':
if (!registeredIdentity) {
send({ "status" : "unregistered", "refrence" : "SM-10" })
} else {
send({ "status" : "registered" , "identity" : registeredIdentity , "duration" : "500" , "refrence" : "SM-04" })
}
break
case 'call':
callingTimeout = global.setTimeout(() => {
sendStatusChangedMessage(STATUS.CALLOUT)
global.clearTimeout(callEndingTimeout)
callEndingTimeout = global.setTimeout(() => {
setStatus(STATUS.OFFHOOK)
send(messageFromStatus())
}, parsed.number)
}, TIME_BEFORE_PICKING_UP)
break
case 'terminate':
setStatus(STATUS.OFFHOOK)
send(messageFromStatus())
break
case 'answer':
if (status === STATUS.INCOMING) {
sendStatusChangedMessage(STATUS.ANSWERED)
send({ "action" : "answer" , "response" : "Call answered", "call_number" : "%s" , "caller" : "me", "reference" : "SM-06"})
} else {
send({ "action" : "answer" , "response" : "There are no calls to answer." , "reference" : "SM-05" })
}
break
case 'callme':
sendStatusChangedMessage(STATUS.INCOMING)
break
case 'register':
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
registeredIdentity = `sip:${parsed.username}@${parsed.host}`
send({ "status" : "registered" , "identity" : registeredIdentity, "duration" : "0" , "refrence" : "SM-04" })
break
case 'unregister':
registeredIdentity = undefined
send({ "action" : "unregister" , "response" : "signal send to daemon" , "reference" : "SM-15" })
break
}
})
setStatus(STATUS.OFFHOOK)
ws.send(JSON.stringify({ "message" : "Your are connected!" , "reference" : "SM-01" }))
stdin.on('data', (data) => {
if (data.toString().trim() === 'callme') {
sendStatusChangedMessage(STATUS.INCOMING)
}
})
})