@seriousme/opifex/dist/client/handlers/handlePublish.js

MQTT client & server for Deno & NodeJS

import { PacketType } from "../deps.js";
/**
 * Handles incoming MQTT publish packets based on their QoS level
 * @param ctx - The MQTT connection context
 * @param packet - The incoming publish packet to handle
 * @returns Promise that resolves when packet is handled
 */
export async function handlePublish(ctx, packet) {
    const qos = packet.qos || 0;
    if (qos === 0) {
        ctx.receivePublish(packet);
        return;
    }
    if (packet.id !== undefined) {
        // qos 1
        if (qos === 1) {
            ctx.receivePublish(packet);
            await ctx.send({
                type: PacketType.puback,
                id: packet.id,
            });
            return;
        }
        // qos 2
        if (ctx.store) {
            ctx.store.pendingIncoming.set(packet.id, packet);
            await ctx.send({
                type: PacketType.pubrec,
                id: packet.id,
            });
        }
    }
}
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