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feat(light-js): add discovery of a peer #250

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merged 2 commits into from
Jul 10, 2023
Merged

feat(light-js): add discovery of a peer #250

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d4f45a9
add discovery of a peer
weboko Jul 10, 2023
23756c1
rename
weboko Jul 10, 2023
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33 changes: 28 additions & 5 deletions examples/light-js/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,7 @@
<div id="remote-peer-id"></div>

<label for="remote-multiaddr">Remote peer's multiaddr</label>
<input
id="remote-multiaddr"
type="text"
value="/dns4/node-01.ac-cn-hongkong-c.wakuv2.test.statusim.net/tcp/8000/wss/p2p/16Uiu2HAkvWiyFsgRhuJEb9JfjYxEkoHLgnUQmr1N5mKWnYjxYRVm"
/>
<input id="remote-multiaddr" type="text" value="" />
<button disabled id="dial" type="button">Dial</button>
<br />
<button disabled id="subscribe" type="button">Subscribe with Filter</button>
Expand All @@ -50,6 +46,10 @@
utf8ToBytes,
bytesToUtf8,
} from "https://unpkg.com/@waku/sdk@0.0.16/bundle/index.js";
import {
enrTree,
DnsNodeDiscovery,
} from "https://unpkg.com/@waku/dns-discovery@0.0.14/bundle/index.js";

const peerIdDiv = document.getElementById("peer-id");
const remotePeerIdDiv = document.getElementById("remote-peer-id");
Expand All @@ -74,6 +74,14 @@
div.innerHTML += "</ul>";
};

try {
await searchForPeer(statusDiv, remoteMultiAddrDiv);
} catch (e) {
console.log("Failed to find a peer", e);
remoteMultiAddrDiv.value =
"/dns4/node-01.ac-cn-hongkong-c.wakuv2.test.statusim.net/tcp/8000/wss/p2p/16Uiu2HAkvWiyFsgRhuJEb9JfjYxEkoHLgnUQmr1N5mKWnYjxYRVm";
}

statusDiv.innerHTML = "<p>Creating Waku node.</p>";
const node = await createLightNode();

Expand Down Expand Up @@ -130,6 +138,21 @@
console.log("Message sent!");
textInput.value = null;
};

async function searchForPeer(statusNode, multiaddrNode) {
statusDiv.innerHTML = "<p>Discovering peer</p>";

const dnsDiscovery = await DnsNodeDiscovery.dnsOverHttp();
const peersIterator = await dnsDiscovery.getNextPeer(
[enrTree["TEST"]],
{ lightPush: 1, filter: 1 }
);
const peerEnr = await peersIterator.next();
const ma = peerEnr.value.multiaddrs.map((v) => v.toString())[1];
const peerId = peerEnr.value.peerId.toString();

multiaddrNode.value = `${ma}/p2p/${peerId}`;
}
</script>
</body>
</html>