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 ${url} with`)
12 const request
= new XMLHttpRequest()
13 request
.open('GET', url
, true)
14 request
.setRequestHeader('Content-Type', 'application/json' )
15 request
.setRequestHeader('X-Strapp-Type', JSON
.stringify(data
))
16 request
.onreadystatechange
= () => {
17 if (request
.status
=== 200) {
18 console
.log(request
.response
)
19 resolve(request
.response
)
21 else if (request
.status
=== 504) {
22 console
.log('timed out, resending')
23 pollServerTimeout(url
, data
, resolve
, reject
)
26 reject('server unhandled response of status ' + request
.status
)
33 /* TODO: All this does is wrap a function in a promise */
34 function pollServer(url
, clientPubKey
, func
) {
35 return new Promise((resolve
, reject
) => {
36 func(url
, clientPubKey
, resolve
, reject
)
40 /* TODO: duplicate in both client.js and host.js */
41 function getPublicKey() {
42 return new Promise( (resolve
, reject
) => {
43 /* Check local storage for public key */
44 if (!window
.localStorage
.getItem('public-key')) {
45 console
.log('public key is undefined')
46 /* If doesn't exist, generate public and private key pair, store in
48 crypto
.subtle
.generateKey(
51 publicExponent
: new Uint8Array([0x01, 0x00, 0x01]),
52 hash
: {name
: "SHA-256"}
55 ['encrypt', 'decrypt']
57 /* TODO: Do we need to store the private key as well? */
58 crypto
.subtle
.exportKey('jwk', keyPair
.publicKey
)
59 .then((exportedKey
) => {
60 window
.localStorage
.setItem('publicKey', exportedKey
)
61 console
.log('public key is' + window
.localStorage
.getItem('publicKey'))
68 resolve(window
.localStorage
.getItem('publicKey'))
74 /* Create, set, and get client Offer. Poll server for host answer.
75 Set host answer as client remoteDescription */
76 const cpc
= new RTCPeerConnection()
77 console
.log('creating offer')
78 cpc
.createOffer().then((offer
) => {
79 return cpc
.setLocalDescription(offer
)
82 console
.log('sessionDescriptionInit = ' + cpc
.localDescription
)
83 getPublicKey().then((cpk
) => {
84 console
.log('cpk is' + cpk
)
87 sdp
: cpc
.localDescription
,
91 return pollServer(window
.location
, offer
, pollServerTimeout
)
94 /* TODO: State machine to parse answer */
95 cpc
.setRemoteDescription(answer
.sdp
)
97 console
.log('error in sdp handshake: ' + err
)