1 const body
= document
.createElement('body')
2 const root
= document
.createElement('div')
3 document
.title
= "Strapp.io Client"
7 /* Poll the server. Send get request, wait for timeout, send another request.
8 Do this until...? Can be used for either reconnecting or waiting for answer*/
9 function pollServerTimeout(url
, data
, resolve
, reject
) {
10 console
.log('Polling server with offer ' + data
)
11 const request
= new XMLHttpRequest()
12 request
.open('GET', url
)
13 request
.setRequestHeader('Content-Type', 'application/json' )
14 request
.setRequestHeader('X-Strapp-Type', 'o' )
15 request
.onreadystatechange
= () => {
16 if (request
.status
=== 200) {
17 console
.log(request
.response
)
18 resolve(request
.response
)
20 else if (request
.status
=== 504) {
21 console
.log('timed out, resending')
22 pollServerTimeout(url
, data
, resolve
, reject
)
25 reject('server unhandled response of status ' + request
.status
)
29 request
.send('data in stufff and stuff in data')
32 /* TODO: All this does is wrap a function in a promise */
33 function pollServer(url
, clientPubKey
, func
) {
34 return new Promise((resolve
, reject
) => {
35 func(url
, clientPubKey
, resolve
, reject
)
39 /* TODO: duplicate in both client.js and host.js */
40 function getPublicKey() {
41 return new Promise( (resolve
, reject
) => {
42 /* Check local storage for public key */
43 if (!window
.localStorage
.getItem('public-key')) {
44 console
.log('public key is undefined')
45 /* If doesn't exist, generate public and private key pair, store in
47 crypto
.subtle
.generateKey(
50 publicExponent
: new Uint8Array([0x01, 0x00, 0x01]),
51 hash
: {name
: "SHA-256"}
54 ['encrypt', 'decrypt']
56 /* TODO: Do we need to store the private key as well? */
57 crypto
.subtle
.exportKey('jwk', keyPair
.publicKey
)
58 .then((exportedKey
) => {
59 window
.localStorage
.setItem('publicKey', exportedKey
)
60 console
.log('public key is' + window
.localStorage
.getItem('publicKey'))
67 resolve(window
.localStorage
.getItem('publicKey'))
73 /* Create, set, and get client Offer. Poll server for host answer.
74 Set host answer as client remoteDescription */
75 const cpc
= new RTCPeerConnection()
76 console
.log('creating offer')
77 cpc
.createOffer().then((offer
) => {
78 return cpc
.setLocalDescription(offer
)
80 console
.log('sessionDescriptionInit = ' + cpc
.localDescription
)
81 getPublicKey().then((cpk
) => {
82 console
.log('cpk is' + cpk
)
85 sdp
: cpc
.localDescription
,
89 return pollServer(window
.location
, offer
, pollServerTimeout
)
92 /* TODO: State machine to parse answer */
93 cpc
.setRemoteDescription(answer
.sdp
)
95 console
.log('error in sdp handshake: ' + err
)