111 lines
2.4 KiB
Swift
111 lines
2.4 KiB
Swift
//
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// FrameConnack.swift
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// CocoaMQTT
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//
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// Created by JianBo on 2019/8/7.
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// Copyright © 2019 emqx.io. All rights reserved.
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//
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import Foundation
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struct FrameConnAck: Frame {
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var packetFixedHeaderType: UInt8 = FrameType.connack.rawValue
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// --- Attributes
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/// MQTT 3.1.1
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var returnCode: CocoaMQTTConnAck?
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/// MQTT 5.0
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var reasonCode: CocoaMQTTCONNACKReasonCode?
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// 3.2.2.1.1 Session Present
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var sessPresent: Bool = false
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// --- Attributes End
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// 3.2.2.3 CONNACK Properties
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var connackProperties: MqttDecodeConnAck?
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var propertiesBytes: [UInt8]?
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// 3.2.3 CONNACK Payload
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// The CONNACK packet has no Payload.
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/// MQTT 3.1.1
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init(returnCode: CocoaMQTTConnAck) {
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self.returnCode = returnCode
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}
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/// MQTT 5.0
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init(code: CocoaMQTTCONNACKReasonCode) {
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reasonCode = code
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}
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}
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extension FrameConnAck {
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func fixedHeader() -> [UInt8] {
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var header = [UInt8]()
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header += [FrameType.connack.rawValue]
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return header
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}
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func variableHeader5() -> [UInt8] {
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return [sessPresent.bit, reasonCode!.rawValue]
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}
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func payload5() -> [UInt8] { return [] }
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func properties() -> [UInt8] { return propertiesBytes ?? [] }
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func allData() -> [UInt8] {
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var allData = [UInt8]()
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allData += fixedHeader()
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allData += variableHeader5()
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allData += properties()
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allData += payload5()
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return allData
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}
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func variableHeader() -> [UInt8] {
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return [sessPresent.bit, returnCode!.rawValue]
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}
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func payload() -> [UInt8] { return [] }
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}
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extension FrameConnAck: InitialWithBytes {
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init?(packetFixedHeaderType: UInt8, bytes: [UInt8]) {
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guard packetFixedHeaderType == FrameType.connack.rawValue else {
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return nil
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}
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guard bytes.count >= 2 else {
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return nil
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}
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sessPresent = Bool(bit: bytes[0] & 0x01)
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let mqtt5ack = CocoaMQTTCONNACKReasonCode(rawValue: bytes[1])
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reasonCode = mqtt5ack
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let ack = CocoaMQTTConnAck(byte: bytes[1])
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returnCode = ack
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propertiesBytes = bytes
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self.connackProperties = MqttDecodeConnAck()
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self.connackProperties!.properties(connackData: bytes)
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}
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}
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extension FrameConnAck: CustomStringConvertible {
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var description: String {
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return "CONNACK(code: \(String(describing: reasonCode)), sp: \(sessPresent))"
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}
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}
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