2022-09-13 14:12:39 +00:00
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<!DOCTYPE html>
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2022-12-12 04:59:35 +00:00
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta content="width=device-width, initial-scale=1.0" name="viewport" />
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2022-09-13 14:12:39 +00:00
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<title>JS-Waku light node example</title>
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2023-01-04 20:15:56 +00:00
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<link rel="apple-touch-icon" href="./favicon.png" />
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<link rel="manifest" href="./manifest.json" />
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<link rel="icon" href="./favicon.ico" />
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2022-12-12 04:59:35 +00:00
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</head>
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<body>
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<div><h2>Status</h2></div>
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<div id="status"></div>
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<div><h2>Local Peer Id</h2></div>
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<div id="peer-id"></div>
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<div><h2>Remote Peer Id</h2></div>
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<div id="remote-peer-id"></div>
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<label for="remote-multiaddr">Remote peer's multiaddr</label>
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2023-07-10 22:33:47 +00:00
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<input id="remote-multiaddr" type="text" value="" />
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2022-12-12 04:59:35 +00:00
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<button disabled id="dial" type="button">Dial</button>
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<br />
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<button disabled id="subscribe" type="button">Subscribe with Filter</button>
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<button disabled id="unsubscribe" type="button">
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Unsubscribe with Filter
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</button>
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<br />
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<label for="textInput">Message text</label>
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<input id="textInput" placeholder="Type your message here" type="text" />
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<button disabled id="sendButton" type="button">
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Send message using Light Push
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</button>
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<br />
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<div id="messages"></div>
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2023-04-17 18:22:24 +00:00
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<script src="https://unpkg.com/@multiformats/multiaddr@12.1.1/dist/index.min.js"></script>
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<script type="module">
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import {
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createLightNode,
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2022-12-16 04:02:23 +00:00
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waitForRemotePeer,
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createEncoder,
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createDecoder,
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2023-06-20 22:27:04 +00:00
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utf8ToBytes,
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bytesToUtf8,
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2023-08-07 11:16:49 +00:00
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} from "https://unpkg.com/@waku/sdk@0.0.18/bundle/index.js";
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2023-07-10 22:33:47 +00:00
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import {
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enrTree,
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DnsNodeDiscovery,
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2023-08-07 11:16:49 +00:00
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} from "https://unpkg.com/@waku/dns-discovery@0.0.16/bundle/index.js";
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const peerIdDiv = document.getElementById("peer-id");
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const remotePeerIdDiv = document.getElementById("remote-peer-id");
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const statusDiv = document.getElementById("status");
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const remoteMultiAddrDiv = document.getElementById("remote-multiaddr");
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const dialButton = document.getElementById("dial");
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const subscribeButton = document.getElementById("subscribe");
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const unsubscribeButton = document.getElementById("unsubscribe");
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const messagesDiv = document.getElementById("messages");
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const textInput = document.getElementById("textInput");
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const sendButton = document.getElementById("sendButton");
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const ContentTopic = "/js-waku-examples/1/chat/utf8";
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const decoder = createDecoder(ContentTopic);
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const encoder = createEncoder({ contentTopic: ContentTopic });
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let messages = [];
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let unsubscribe;
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const updateMessages = (msgs, div) => {
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div.innerHTML = "<ul>";
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messages.forEach((msg) => (div.innerHTML += "<li>" + msg + "</li>"));
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div.innerHTML += "</ul>";
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};
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2023-07-10 22:33:47 +00:00
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try {
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await searchForPeer(statusDiv, remoteMultiAddrDiv);
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} catch (e) {
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console.log("Failed to find a peer", e);
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remoteMultiAddrDiv.value =
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"/dns4/node-01.ac-cn-hongkong-c.wakuv2.test.statusim.net/tcp/8000/wss/p2p/16Uiu2HAkvWiyFsgRhuJEb9JfjYxEkoHLgnUQmr1N5mKWnYjxYRVm";
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}
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2022-12-12 04:59:35 +00:00
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statusDiv.innerHTML = "<p>Creating Waku node.</p>";
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const node = await createLightNode();
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statusDiv.innerHTML = "<p>Starting Waku node.</p>";
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await node.start();
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statusDiv.innerHTML = "<p>Waku node started.</p>";
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peerIdDiv.innerHTML = "<p>" + node.libp2p.peerId.toString() + "</p>";
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dialButton.disabled = false;
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dialButton.onclick = async () => {
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const ma = remoteMultiAddrDiv.value;
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if (!ma) {
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statusDiv.innerHTML = "<p>Error: No multiaddr provided.</p>";
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return;
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}
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statusDiv.innerHTML = "<p>Dialing peer.</p>";
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2023-04-17 18:22:24 +00:00
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const multiaddr = MultiformatsMultiaddr.multiaddr(ma);
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await node.dial(multiaddr, ["filter", "lightpush"]);
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await waitForRemotePeer(node, ["filter", "lightpush"]);
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const peers = await node.libp2p.peerStore.all();
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2022-12-12 04:59:35 +00:00
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statusDiv.innerHTML = "<p>Peer dialed.</p>";
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remotePeerIdDiv.innerHTML = "<p>" + peers[0].id.toString() + "</p>";
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textInput.disabled = false;
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sendButton.disabled = false;
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subscribeButton.disabled = false;
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};
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2022-09-13 14:12:39 +00:00
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2022-12-12 04:59:35 +00:00
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const callback = (wakuMessage) => {
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2023-06-20 22:27:04 +00:00
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const text = bytesToUtf8(wakuMessage.payload);
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2022-12-12 04:59:35 +00:00
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const timestamp = wakuMessage.timestamp.toString();
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messages.push(text + " - " + timestamp);
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updateMessages(messages, messagesDiv);
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};
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2022-09-13 14:12:39 +00:00
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2022-12-12 04:59:35 +00:00
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subscribeButton.onclick = async () => {
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unsubscribe = await node.filter.subscribe([decoder], callback);
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unsubscribeButton.disabled = false;
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2022-09-20 01:27:08 +00:00
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subscribeButton.disabled = true;
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};
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2022-12-12 04:59:35 +00:00
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unsubscribeButton.onclick = async () => {
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await unsubscribe();
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unsubscribe = undefined;
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unsubscribeButton.disabled = true;
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2022-09-20 01:27:08 +00:00
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subscribeButton.disabled = false;
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2022-12-12 04:59:35 +00:00
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};
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2022-12-12 04:59:35 +00:00
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sendButton.onclick = async () => {
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2022-09-13 14:12:39 +00:00
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const text = textInput.value;
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2023-04-17 18:22:24 +00:00
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await node.lightPush.send(encoder, {
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2023-06-20 22:27:04 +00:00
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payload: utf8ToBytes(text),
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});
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console.log("Message sent!");
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textInput.value = null;
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2022-12-12 04:59:35 +00:00
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};
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2023-07-10 22:33:47 +00:00
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async function searchForPeer(statusNode, multiaddrNode) {
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statusDiv.innerHTML = "<p>Discovering peer</p>";
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const dnsDiscovery = await DnsNodeDiscovery.dnsOverHttp();
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const peersIterator = await dnsDiscovery.getNextPeer(
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[enrTree["TEST"]],
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{ lightPush: 1, filter: 1 }
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);
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const peerEnr = await peersIterator.next();
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const ma = peerEnr.value.multiaddrs.map((v) => v.toString())[1];
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const peerId = peerEnr.value.peerId.toString();
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multiaddrNode.value = `${ma}/p2p/${peerId}`;
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}
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2022-12-12 04:59:35 +00:00
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</script>
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</body>
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2022-09-13 14:12:39 +00:00
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</html>
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