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import Foundation
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import CocoaMQTT
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import DCloudUTSFoundation
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// 证书加载工具预计由同目录的 xMqttCerHelp.swift 提供
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// getClientCertFromP12File(resourcePath: String, certPassword: String) -> [String: Any]?
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// getClientCertFromCrtFile(resourcePath: String) -> [String: Any]?
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@objc public class XMqttHelp: NSObject {
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@objc public enum ConnectStatus: Int {
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case wait
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case opening
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case open
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case error
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case dissconnect
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case message
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}
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public typealias EventType = String // 'open' | 'error' | 'dissconnect' | 'message'
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public typealias MQTTEventCallback = @convention(block) (_ type: EventType, _ topic: String?, _ payload: String) -> Void
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public typealias VoidCallback = @convention(block) () -> Void
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private var mqtt: CocoaMQTT?
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@objc public private(set) var connectStatus: ConnectStatus = .wait
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private var anyStateCallback: VoidCallback?
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private struct EventItem {
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let type: EventType
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let callback: MQTTEventCallback
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}
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private var events = [String: EventItem]()
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private var pendingSubs = [(topic: String, qos: CocoaMQTTQoS)]()
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@objc public override init() {
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super.init()
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}
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// opts keys 对齐 index.uts: protocol, server, port, path, clientId, userName, passWord, keepAliveInterval, reconnect, useSSL, certName, certPassword
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@objc public func create(_ opts: NSDictionary) -> XMqttHelp {
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let proto = ((opts["protocol"] as? String) ?? "wss").lowercased() // ws | wss
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let server = (opts["server"] as? String) ?? ""
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let port = (opts["port"] as? NSNumber)?.uint16Value ?? 0
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let path = (opts["path"] as? String) ?? "/mqtt"
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let clientId = (opts["clientId"] as? String) ?? ("iOS-" + UUID().uuidString)
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let userName = opts["userName"] as? String
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let passWord = opts["passWord"] as? String
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let keepAlive = (opts["keepAliveInterval"] as? NSNumber)?.uint16Value ?? 60
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let reconnect = (opts["reconnect"] as? NSNumber)?.boolValue ?? true
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var useSSL = (opts["useSSL"] as? NSNumber)?.boolValue ?? (proto == "wss")
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let certName = opts["certName"] as? String
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let certPassword = opts["certPassword"] as? String
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let allowUntrust = (opts["allowUntrustCACertificate"] as? NSNumber)?.boolValue ?? false
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var headers = opts["headers"] as? [String: String] ?? [:]
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let subProtocols = opts["protocols"] as? [String] ?? ["mqtt"]
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let connectTimeoutMs = (opts["connectTimeoutMs"] as? NSNumber)?.intValue ?? 30000
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let websocket = CocoaMQTTWebSocket(uri: path)
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// if !subProtocols.isEmpty {
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// // 通过请求头携带子协议，等效于 Sec-WebSocket-Protocol
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// headers["sec-websocket-protocol"] = subProtocols.joined(separator: ", ")
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// }
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// 常见要求：补 Host 与 Origin
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headers["Host"] = server
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if headers["Origin"] == nil {
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headers["Origin"] = "https://\(server)"
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}
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// 标准版本
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headers["Sec-WebSocket-Version"] = "13"
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headers["sec-websocket-protocol"] = "mqtt"
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headers["upgrade"] = "websocket"
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headers["connection"] = "Upgrade"
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websocket.headers = headers
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// 显式打开 wss（CocoaMQTT 2.1.x 部分版本需要）
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// 存在则赋值，不存在编译器会报错；若报错我再回退此行
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#if compiler(>=5.0)
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// 尝试兼容的属性名
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// @available: 部分版本属性名为 enableSSL 或 isSecure
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// 这里使用可选链避免编译期错误不可行，因此直接尝试常见属性名
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// 如果你的 CocoaMQTT 版本不支持，将移除此行由 mqtt.enableSSL 控制
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#endif
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let mqtt = CocoaMQTT(clientID: clientId, host: server, port: port, socket: websocket)
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mqtt.username = userName
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mqtt.password = passWord
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mqtt.keepAlive = keepAlive
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mqtt.enableSSL = useSSL
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mqtt.autoReconnect = reconnect
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mqtt.cleanSession = true
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mqtt.willMessage = CocoaMQTTMessage(topic: "/will", string: "dieout")
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console.log("[XMqttHelp] connect url => \(proto)://\(server):\(port)\(path), ssl=\(useSSL), headers=\(headers)")
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// 证书策略（可选）
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if useSSL, let name = certName, !name.isEmpty {
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if name.lowercased().hasSuffix(".p12") {
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if let pwd = certPassword, !pwd.isEmpty {
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let base = (name as NSString).deletingPathExtension
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if let path = Bundle.main.path(forResource: base, ofType: "p12"),
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let settings = getClientCertFromP12File(resourcePath: path, certPassword: pwd) {
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mqtt.sslSettings = settings
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} else {
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console.log("[XMqttHelp] p12 证书无效或找不到: \(name)")
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}
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} else {
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console.log("[XMqttHelp] p12 证书未提供密码")
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}
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} else if name.lowercased().hasSuffix(".crt") {
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let base = (name as NSString).deletingPathExtension
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if let path = Bundle.main.path(forResource: base, ofType: "crt"),
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let settings = getClientCertFromCrtFile(resourcePath: path) {
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mqtt.sslSettings = settings
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} else {
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console.log("[XMqttHelp] crt 证书无效或找不到: \(name)")
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}
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}
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}
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// 自签证书信任（调试可开，生产建议禁用或使用证书绑定）
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mqtt.allowUntrustCACertificate = allowUntrust
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// 指定 SNI 主机名，避免非标准端口下的握手失败
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if useSSL {
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var ssl = mqtt.sslSettings ?? [:]
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ssl[kCFStreamSSLPeerName as String] = server as NSString
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mqtt.sslSettings = ssl
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}
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// 事件回调
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weak var weakSelf = self
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mqtt.didDisconnect = { [weak weakSelf] _, error in
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guard let self = weakSelf else { return }
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self.connectStatus = .error
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self.notifyStateChange()
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self.buildCallEvents(type: "error", topic: nil, payload: (error as? CocoaMQTTError) != nil ? "连接错误" : "地址错误，或者没有网络。")
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}
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mqtt.didConnectAck = { [weak weakSelf] _, _ in
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guard let self = weakSelf else { return }
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self.connectStatus = .open
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self.notifyStateChange()
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self.buildCallEvents(type: "open", topic: nil, payload: "已连接")
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// 补发未完成的订阅
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if !self.pendingSubs.isEmpty {
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for item in self.pendingSubs {
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self.mqtt?.subscribe(item.topic, qos: item.qos)
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console.log("[XMqttHelp] re-subscribe => \(item.topic) qos=\(item.qos.rawValue)")
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}
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self.pendingSubs.removeAll()
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}
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}
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mqtt.didChangeState = { [weak weakSelf] _, state in
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guard let self = weakSelf else { return }
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switch state {
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case .connecting:
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console.log("[XMqttHelp] 连接中")
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case .connected:
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console.log("[XMqttHelp] 连接成功")
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case .disconnected:
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self.connectStatus = .dissconnect
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self.notifyStateChange()
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self.buildCallEvents(type: "dissconnect", topic: nil, payload: "已断开连接")
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default:
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break
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}
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}
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mqtt.didReceiveMessage = { [weak weakSelf] _, message, _ in
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guard let self = weakSelf else { return }
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self.connectStatus = .message
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self.notifyStateChange()
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let payload = message.string ?? (String(data: Data(message.payload), encoding: .utf8) ?? "")
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self.buildCallEvents(type: "message", topic: message.topic, payload: payload)
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}
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self.mqtt = mqtt
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self.connectStatus = .wait
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self.notifyStateChange()
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// 连接超时保护
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if connectTimeoutMs > 0 {
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let deadline = DispatchTime.now() + .milliseconds(connectTimeoutMs)
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DispatchQueue.main.asyncAfter(deadline: deadline) { [weak self] in
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guard let self = self else { return }
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if self.connectStatus == .opening {
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console.log("[XMqttHelp] 连接超时: \(connectTimeoutMs)ms")
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_ = self.disconnect()
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self.connectStatus = .error
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self.notifyStateChange()
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self.buildCallEvents(type: "error", topic: nil, payload: "连接超时")
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}
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}
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}
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return self
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}
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@objc public func connect() -> XMqttHelp {
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guard let mqtt = self.mqtt else { return self }
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self.connectStatus = .opening
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self.notifyStateChange()
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mqtt.connect()
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return self
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}
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@objc public func publish(_ topic: String, message: String, qos: Int, retained: Bool, completion: @escaping @convention(block) (_ ok: Bool) -> Void) -> XMqttHelp {
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guard let mqtt = self.mqtt else { completion(false); return self }
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let q: CocoaMQTTQoS = (qos == 2) ? .qos2 : ((qos == 1) ? .qos1 : .qos0)
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let msg = CocoaMQTTMessage(topic: topic, string: message, qos: q, retained: retained)
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mqtt.publish(msg)
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completion(true)
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return self
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}
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@objc public func subscribe(_ topics: [NSDictionary]) -> XMqttHelp {
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guard let mqtt = self.mqtt else { return self }
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for item in topics {
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guard let topic = item["topic"] as? String else { continue }
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let qosVal = (item["qos"] as? NSNumber)?.intValue ?? 0
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let q: CocoaMQTTQoS = (qosVal == 2) ? .qos2 : ((qosVal == 1) ? .qos1 : .qos0)
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console.log(self.connectStatus == .open,"opeing status")
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if self.connectStatus == .open {
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mqtt.subscribe(topic, qos: q)
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console.log("[XMqttHelp] subscribe => \(topic) qos=\(q.rawValue)")
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} else {
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self.pendingSubs.append((topic, q))
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console.log("[XMqttHelp] cache subscribe (not open) => \(topic) qos=\(q.rawValue)")
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}
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}
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return self
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}
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@objc public func unsubscribe(_ topics: [String]) -> XMqttHelp {
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guard let mqtt = self.mqtt else { return self }
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for t in topics { mqtt.unsubscribe(t) }
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return self
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}
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@objc public func disconnect() -> XMqttHelp {
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guard let mqtt = self.mqtt else { return self }
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mqtt.disconnect()
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return self
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}
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// 注册任意状态变化的回调（无参数）
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@objc public func setCallBack(_ cb: @escaping VoidCallback) {
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self.anyStateCallback = cb
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}
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// 规范命名，提供同等功能（可选使用）
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@objc public func getStatus() -> String {
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return self.statusString(self.connectStatus)
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}
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// 事件系统：与 index.uts 的 addEventListener/removeEventListener 对齐
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@objc @discardableResult
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public func addEventListener(_ type: EventType, callback: @escaping MQTTEventCallback) -> String {
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let id = String(format: "%.0f-%d", Date().timeIntervalSince1970 * 1000, Int.random(in: 0...9999))
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events[id] = EventItem(type: type, callback: callback)
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return id
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}
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@objc @discardableResult
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public func removeEventListener(_ id: String) -> XMqttHelp {
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events.removeValue(forKey: id)
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return self
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}
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private func buildCallEvents(type: EventType, topic: String?, payload: String) {
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for (_, item) in events where item.type == type {
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item.callback(type, topic, payload)
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}
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}
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private func notifyStateChange() {
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anyStateCallback?()
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}
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private func statusString(_ status: ConnectStatus) -> String {
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switch status {
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case .wait:
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return "wait"
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case .opening:
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return "opening"
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case .open:
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return "open"
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case .error:
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return "error"
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case .dissconnect:
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return "dissconnect"
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case .message:
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return "message"
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}
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}
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}
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Reference in New Issue
Block a user