+++ /dev/null
-const body = document.createElement('body')
-const root = document.createElement('div')
-document.title = "Strapp.io Client"
-const conf = {"iceServers": [{ "urls": "stun:stun.1.google.com:19302" }] }
-
-/* TODO: This is duplicated in both client.js and host.js */
-function getPublicKey() {
- return new Promise( (resolve, reject) => {
- /* Check local storage for public key */
- if (!window.localStorage.getItem('public-key')) {
- /* If doesn't exist, generate public and private key pair, store in
- local storage */
- crypto.subtle.generateKey(
- { name:'RSA-OAEP',
- modulusLength: 2048,
- publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
- hash: {name: "SHA-256"}
- },
- true,
- ['encrypt', 'decrypt']
- ).then((keyPair) => {
- /* TODO: Do we need to store the private key as well? */
- crypto.subtle.exportKey('jwk', keyPair.publicKey)
- .then((exportedKey) => {
- window.localStorage.setItem('publicKey', exportedKey)
- console.log('public key is' + window.localStorage.getItem('publicKey'))
- resolve(exportedKey)
- })
-
- })
- }
- else {
- resolve(window.localStorage.getItem('publicKey'))
- }
-})
-
-}
-
-function sendHost(url, data) {
- const request = new XMLHttpRequest()
- request.open('POST', url, true)
- request.setRequestHeader('Content-Type', 'application/json' )
- request.setRequestHeader('X-Strapp-Type', 'ice-candidate-submission')
- request.send(data)
-}
-
-/* Poll the server. Send get request, wait for timeout, send another request.
-Do this until...? Can be used for either reconnecting or waiting for answer*/
-function requestHostAnswer(url, data) {
- return new Promise((resolve, reject) => {
- const request = new XMLHttpRequest()
- request.open('GET', url, true)
- /* But there is no JSON? */
- request.setRequestHeader('Content-Type', 'application/json' )
- request.setRequestHeader('X-Strapp-Type', 'client-sdp-offer')
- request.setRequestHeader('X-Strapp-Pubkey', data.pubKey)
- request.setRequestHeader('X-Strapp-Offer', JSON.stringify(data.sdp))
- request.onreadystatechange = () => {
- if (request.status === 200) {
- if(request.readyState === 4) {
- console.log('Client: Recieved Answer from Host')
- console.log(request)
- resolve(request.response)
- }
- }
- else if (request.status === 504) {
- console.log('timed out, resending')
- resolve(requestHostAnswer(url, data))
- }
- else {
- reject('server unhandled response of status ' + request.status)
- }
- }
- request.send()
- })
-}
-
-/* Poll server for ice candidates until ice is complete */
-function requestHostICE(cpc, url, pubKey) {
- let intervalID = window.setInterval(() => {
- if (cpc.iceConnectionState.localeCompare('connected') !== 0
- && cpc.iceConnectionState.localeCompare('completed') !== 0) {
- console.log('Client: Polling server begin for intervalID = ' + intervalID)
- console.log('Client: Requesting ICE Candidates from server')
- const request = new XMLHttpRequest()
- request.open('GET', url, true)
- request.setRequestHeader('Content-Type', 'application/json' )
- request.setRequestHeader('X-Strapp-Type', 'ice-candidate-request')
- request.setRequestHeader('X-client-pubkey', pubKey)
- request.onreadystatechange = () => {
- if (request.status === 200) {
- if(request.readyState === 4) {
- console.log('Client: Recieved ICE response from Host')
- let response = JSON.parse(request.response)
- switch(response['iceState']) {
- case "a":
- cpc.addIceCandidate(new RTCIceCandidate(response.ice))
- break
- case "g": /* Gathering so let interval keep polling */
- break
- case "c": /* host iceState == Complete, stop bugging it */
- clearInterval(intervalID)
- clearTimeout()
- break
- default:
- console.log('Unhandled iceState in requestHostICE()' + response['iceState'])
- break
- }
- }
- }
- else {
- console.log('server unhandled response of status ' + request.status)
- clearInterval(intervalID)
- }
- }
- request.send()
- }
- else {
- clearTimeout()
- clearInterval(intervalID)
- }
- }, 5000)
-}
-
-/* Create and send offer -> Send ICE Candidates -> Poll for ICE Candidates */
-getPublicKey().then((cpk) => {
- let dataChannel
- console.log('Client: Create and send offer')
- const cpc = new RTCPeerConnection(conf)
-
- cpc.oniceconnectionstatechange = () => {
- console.log('iceConnectionState = ' + cpc.iceConnectionState)
- }
-
- cpc.onnegotiationneeded = () => {
- console.log('negotiation needed!')
- cpc.createOffer().then((offer) => {
- return cpc.setLocalDescription(offer)
- })
- .then(() => {
- console.log('Client: Sending offer to host')
- let offer = {
- cmd: '> sdp pubKey',
- sdp: cpc.localDescription,
- pubKey: cpk.n
- }
- console.log(offer)
- return requestHostAnswer(window.location, offer)
- })
- .then((serverResponse) => {
- const answer = JSON.parse(serverResponse)
- console.log('Client: Polling for ICE candidates')
- requestHostICE(cpc, window.location, cpk.n)
- cpc.setRemoteDescription(answer.sdp)
- cpc.onicecandidate = (event) => {
- if (event.candidate) {
- console.log('Client: Sending ice candidate to host')
- sendHost(window.location, JSON.stringify({
- cmd: '> ice pubkey',
- ice: event.candidate,
- pubKey: cpk.n
- }))
- }
- else {
- console.log('Client: No more Ice Candidates to send')
- }
- }
-
-
- }).catch( (err) => {
- console.log('error in sdp handshake: ' + err)
- })
- }
- /* Start data channel, triggers on negotiation needed */
- dataChannel = cpc.createDataChannel("sendChannel");
-
- /* Triggered when Host adds track to peer connection */
- cpc.ontrack = (event) => {
- let remoteRTPReceivers = cpc.getReceivers()
- let hostScreen
- let video = document.querySelector('video')
- /* TODO: Audio, video, or other track? */
- console.log(remoteRTPReceivers)
- console.log(video)
- hostScreen = new MediaStream([remoteRTPReceivers[0].track])
- if(!video.srcObject) {
- video.srcObject = hostScreen
- }
- console.log(hostScreen.getVideoTracks())
- console.log(video.srcObject)
- video.onloadedmetadata = () => {
- video.play()
- }
- }
-
- dataChannel.onmessage = (msg) => {
- /* Get mediaStream from host and add it to the video */
- let hostMessage = JSON.parse(msg.data)
- console.log('Client: Renego')
- cpc.setRemoteDescription(hostMessage.sdp).then(() => {
- cpc.createAnswer().then((answer) => {
- return cpc.setLocalDescription(answer)
- }).then(() => {
- dataChannel.send(JSON.stringify({
- "cmd": "> screen dataChannel",
- "sdp": cpc.localDescription
- }))
- })
- })
-
-
- }
- dataChannel.onopen = () => {
- document.body.innerHTML = (`<div><button> Connection with host established! </button></div> <video controls></video>`)
- }
-
-})
-document.addEventListener('DOMContentLoaded', () => {
-
- document.body.innerHTML = `<button> Setting up connection with host </button>`
-
-});
-
projects / henge / kiak.git / blobdiff