@seriousme/opifex/dist/server/handlers/handleUnsubscribe.js

MQTT client & server for Deno & NodeJS

import { PacketType } from "../deps.js";
/**
 * Handles MQTT unsubscribe packets by removing subscriptions and sending acknowledgement
 * @param ctx - The connection context containing client information and methods
 * @param packet - The MQTT unsubscribe packet containing topics to unsubscribe from
 * @returns Promise that resolves when unsubscribe is complete and acknowledged
 */
export async function handleUnsubscribe(ctx, packet) {
    for (const topic of packet.topicFilters) {
        if (ctx.store) {
            ctx.persistence.unsubscribe(ctx.store, topic);
        }
    }
    await ctx.send({
        type: PacketType.unsuback,
        id: packet.id,
    });
}
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