js-waku/guides/relay-receive-send-messages.md

Received and Send messages using Waku Relay

Waku Relay is a gossip protocol that enables you to send and receive messages. You can find Waku Relay's specifications on Vac RFC.

Before starting, you need to choose a Content Topic for your dApp. Check out the choose a content topic guide to learn more about content topics.

For the purpose of this guide, we are using a unique content topic: /relay-guide/1/chat/proto.

Installation

You can install js-waku using your favorite package manager:

npm install js-waku

Create Waku instance

In order to interact with the Waku network, you first need a Waku instance:

import { Waku } from 'js-waku';

const wakuNode = await Waku.create();

Connect to other peers

The Waku instance needs to connect to other peers to communicate with the network. You are free to choose any method to bootstrap and DappConnect will ship with new methods in the future.

For now, the easiest way is to connect to Status' Waku fleet:

import { getStatusFleetNodes } from 'js-waku';

const nodes = await getStatusFleetNodes();
await Promise.all(nodes.map((addr) => waku.dial(addr)));