Sending Messages to Hop Channels

Messages can be sent to channels from your backend (e.g. an API, a serverless function, etc) and be received by Channel subscribers (on your frontend app, for example).

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Message Structure

When sending a message to a channel, you must specify 2 fields:

• an event name, and
• message data

The event name can be an arbritrary string of your choosing - for example, if we were making a group chat application and wanted to send a channel message when someone sends a chat message, we might call that event MESSAGE_CREATE.

The data field can be any object. In the case of our group chat example, we might include the message content and author in the data object.

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Publish a Message to a Channel

// Import your Hop SDK instance
import { hop } from ".";

const channelId = "channel_xxx"; // the channel we want to send a message to

await hop.channels.publishMessage(
  channelId,
  // event name of your choosing
  "MESSAGE_CREATE",
  // event data, this can be any object you want it to be
  {
    content: "Hello Hop Channels!",
    author_name: "Vanilla",
  }
);