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