+++ /dev/null
-document.title = "Strapp.io Host"
-
-
-const conf = {"iceServers": [{ "urls": "stun:stun.1.google.com:19302" }] }
-const clients = new Map([])
-const iceCandidates = []
-let dataChannel
-let screenStream /* TODO: Remove if can access localStreams */
-let tracks = []
-let hpk
-
-/* TODO: duplicate in both client.js and host.jhs */
-function getPublicKey() {
- return new Promise( (resolve, reject) => {
- /* Check local storage for public key */
- if (!window.localStorage.getItem('public-key')) {
- console.log('public key is undefined')
- /* 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 sendClientICE(clientPubKey, hostPubKey, iceCandidate) {
- console.log('Host: Allocating ice candidate for client')
- console.log(iceCandidate)
- iceCandidates.push(JSON.stringify({
- cmd: "< ice pubKey",
- ice: iceCandidate,
- hostPubKey: hostPubKey, /* TODO: do we need to send this? */
- clientPubKey: clientPubKey,
- iceState: "a"
- }))
-}
-
-function handleNewClientConnection(pubKey, sdpOffer) {
- /* New Client Connection*/
- hpc = new RTCPeerConnection(conf)
- console.log('handleNewClientConnections()')
- console.log(sdpOffer)
- clients.set(pubKey, hpc)
- console.log(pubKey)
- hpc.setRemoteDescription(sdpOffer)
- .then(() => {
- hpc.createAnswer().then((answer) => {
- return hpc.setLocalDescription(answer)
- })
- .then(() => {
-
- hpc.onicecandidate = (event) => {
- if (event.candidate) {
- sendClientICE(pubKey, hpk.n, event.candidate)
- }
- else {
- console.log('Host: Finished allocating ICE candidates')
- }
- }
- console.log('Host: Sending answer to Client ')
- wsock.send(JSON.stringify({
- cmd: '< sdp pubKey',
- sdp: hpc.localDescription,
- hostPubKey: hpk.n,
- clientPubKey: pubKey
- }))
-
- }).catch((err) => {
- console.log(`error in host answer ${err}`)
- })
- }).catch((error) => {
- console.log(`error in setRemoteDescription ${error}`)
- })
- hpc.oniceconnectionstatechange = () => {
- console.log('iceConnectionState = ' + hpc.iceConnectionState)
- }
- hpc.ondatachannel = (evt) => {
- dataChannel = evt.channel
- dataChannel.onmessage = (msg) => {
- let clientMessage = JSON.parse(msg.data)
- console.log(`client message is ${clientMessage}`)
- hpc.setRemoteDescription(clientMessage.sdp).then(() => {
- console.log('should be streaming now')
- })
- }
- dataChannel.onopen = () => {
- /* If !screenStream, gUM */
- screenStream.getTracks().forEach( (track) => {
- hpc.addTrack(track, screenStream)
- })
- console.log(hpc.getSenders())
- /* Create offer */
- hpc.createOffer().then((offer) => {
- return hpc.setLocalDescription(offer)
- }).then( () => {
- dataChannel.send(JSON.stringify({
- "cmd": "< screen dataChannel",
- "sdp": hpc.localDescription,
- "pubKey": hpc['hpk'].n
- }))
- })
- }
- }
- hpc.onnegotiationneeded = () => {
- console.log('negotiation needed')
- }
-
-}
-
-function handleNewIceCandidate(msg) {
- console.log('Host: Adding new ice candidate')
- const hpc = clients.get(msg.pubKey)
- let candidate = new RTCIceCandidate(msg.ice)
- hpc.addIceCandidate(candidate)
-}
-
-function handleIceRequest(msg) {
- console.log('Host: Handling ice candidate request')
- console.log(iceCandidates)
- const hpc = clients.get(msg.pubKey)
- const iceCandidate = iceCandidates.pop()
- if (iceCandidate !== undefined) {
- wsock.send(iceCandidate)
- } else {
- if (hpc.iceGatheringState.localeCompare('gathering') === 0) {
- wsock.send(`{"cmd" : "< ice pubKey", "clientPubKey":"${msg.pubKey}", "iceState": "g"}`)
- }
- else if (hpc.iceGatheringState.localeCompare('complete') === 0) {
- wsock.send(`{"cmd" : "< ice pubKey", "clientPubKey":"${msg.pubKey}", "iceState": "c"}`)
- }
-
- }
-
-}
-if ("WebSocket" in window) {
- document.addEventListener('DOMContentLoaded', (event) => {
- document.body.innerHTML = '<div>Choose options for client</div> <video autoplay></video>'
- navigator.mediaDevices.getUserMedia({
- video : { mediaSource: "screen",
- width: {max: '1920'},
- height: {max: '1080'},
- frameRate: {max: '10'}} })
- .then(function(mediaStream) {
- let video = document.querySelector('video')
- screenStream = mediaStream
- console.log(mediaStream)
- video.srcObject = mediaStream
- console.log('Grabbed media')
- video.onloadedmetadata = function(e) {
- console.log(e)
- video.play()
- }
- })
- .catch(function(err) {
- document.body.innerHTML = 'Help me help you. Reload the page and allow screen sharing!'
- console.log(err);
- }); // always check for errors at the end.
-
- getPublicKey()
- .then((hpkVal) => {
- hpk = hpkVal
- })
- wsock = new WebSocket(`${_strapp_protocol}://${window.location.hostname}:${_strapp_port}`)
- wsock.onopen = () => {
- console.log(`Strapped to ${_strapp_protocol}://${window.location.hostname}:${_strapp_port}`)
- }
-
- wsock.onmessage = (serverMsg) => {
- /* msg is either offer or ice candidate or ice candidate request*/
-
- /* What if data null? */
- console.log(`serverMsg = ${serverMsg.data}`)
-
- let msg = serverMsg.data.split(' ')
- let clientID = msg[0]
- let type = msg[1]
- let data = JSON.parse(msg.slice(2).join(' '))
-
- if (clients.has(clientID)) {
- switch (type) {
- case 'ice-candidate-submission':
- handleNewIceCandidate(msg)
- break
- case 'ice-candidate-request':
- handleIceRequest(msg)
- break
- case 'client-sdp-offer':
- //repeatedoffer shouldnt happen here
- }
- }
- else {
- switch (type) {
- case 'client-sdp-offer':
- handleNewClientConnection(clientID, data)
- break
- case 'ice-candidate-request':
- handleIceRequest()
- break
- case 'ice-candidate-submission':
- handleNewIceCandidate
- break
- }
- }
- }
-
-
-
- })
-}
-else {
- document.addEventListener('DOMContentLoaded', () => {
- document.body.innerHTML = 'Websockets not supported in your browser'
- })
-}
projects / henge / kiak.git / blobdiff