79 lines
2.4 KiB
JavaScript
79 lines
2.4 KiB
JavaScript
"use strict";
|
|
/*
|
|
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
* SPDX-License-Identifier: Apache-2.0.
|
|
*/
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.DEFAULT_RECONNECT_MIN_SEC = exports.DEFAULT_RECONNECT_MAX_SEC = exports.MqttWill = exports.QoS = void 0;
|
|
/**
|
|
* Quality of service control for mqtt publish operations
|
|
*
|
|
* @category MQTT
|
|
*/
|
|
var QoS;
|
|
(function (QoS) {
|
|
/**
|
|
* QoS 0 - At most once delivery
|
|
* The message is delivered according to the capabilities of the underlying network.
|
|
* No response is sent by the receiver and no retry is performed by the sender.
|
|
* The message arrives at the receiver either once or not at all.
|
|
*/
|
|
QoS[QoS["AtMostOnce"] = 0] = "AtMostOnce";
|
|
/**
|
|
* QoS 1 - At least once delivery
|
|
* This quality of service ensures that the message arrives at the receiver at least once.
|
|
*/
|
|
QoS[QoS["AtLeastOnce"] = 1] = "AtLeastOnce";
|
|
/**
|
|
* QoS 2 - Exactly once delivery
|
|
|
|
* This is the highest quality of service, for use when neither loss nor
|
|
* duplication of messages are acceptable. There is an increased overhead
|
|
* associated with this quality of service.
|
|
|
|
* Note that, while this client supports QoS 2, the AWS IoT Core service
|
|
* does not support QoS 2 at time of writing (May 2020).
|
|
*/
|
|
QoS[QoS["ExactlyOnce"] = 2] = "ExactlyOnce";
|
|
})(QoS = exports.QoS || (exports.QoS = {}));
|
|
/**
|
|
* A Will message is published by the server if a client is lost unexpectedly.
|
|
*
|
|
* The Will message is stored on the server when a client connects.
|
|
* It is published if the client connection is lost without the server
|
|
* receiving a DISCONNECT packet.
|
|
*
|
|
* [MQTT - 3.1.2 - 8]
|
|
*
|
|
* @category MQTT
|
|
*/
|
|
class MqttWill {
|
|
constructor(
|
|
/** Topic to publish Will message on. */
|
|
topic,
|
|
/** QoS used when publishing the Will message. */
|
|
qos,
|
|
/** Content of Will message. */
|
|
payload,
|
|
/** Whether the Will message is to be retained when it is published. */
|
|
retain = false) {
|
|
this.topic = topic;
|
|
this.qos = qos;
|
|
this.payload = payload;
|
|
this.retain = retain;
|
|
}
|
|
}
|
|
exports.MqttWill = MqttWill;
|
|
/**
|
|
* Const value for max reconnection back off time
|
|
*
|
|
* @category MQTT
|
|
*/
|
|
exports.DEFAULT_RECONNECT_MAX_SEC = 128;
|
|
/**
|
|
* Const value for min reconnection back off time
|
|
*
|
|
* @category MQTT
|
|
*/
|
|
exports.DEFAULT_RECONNECT_MIN_SEC = 1;
|
|
//# sourceMappingURL=mqtt.js.map
|