用于 swift4 ios 的 Socket.io

Question

我在如何为我的 swift 代码实现 websocket 功能时遇到了麻烦。

我已经完成了一个服务器实现和另一个 javascript 客户端。他们工作得很好。所以，我相信 websocket 服务器没有错。

但是如果我用swift编写代码，它就行不通了。没有错误发生，控制台上也没有显示任何消息。

这是我的快速代码。

import UIKit
import SocketIO

class ChatViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate {


    @IBOutlet weak var tableView: UITableView!

    var bottomView: ChatRoomInputView!

    var chats: [ChatEntity] = []

    var socket: SocketIOClient!

    override func viewDidLoad() {
        super.viewDidLoad()

        tableView.delegate = self
        tableView.dataSource = self

        // Initialize WebSocket
        let manager = SocketManager(socketURL: URL(string: "http://example.com:8081")!, config: [.log(true), .compress])
        socket = manager.defaultSocket

        socket.on(clientEvent: .connect) {data, ack in
            print("socket connected")
        }

        socket.on("server_to_client") {[weak self] data, ack in
            print ("get Massage!!!")
        }

        socket.connect()

        socket.emit("join_room", with: [getRegistrationId()])
        socket.emit("client_to_server", with: ["ack_client"])

        setupUI()
    }


    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
    }

    override var canBecomeFirstResponder: Bool {
        return true
    }

    override var inputAccessoryView: UIView? {
        return bottomView
    }

    func setupUI() {
        self.view.backgroundColor = UIColor(red: 113/255, green: 148/255, blue: 194/255, alpha: 1)
        tableView.backgroundColor = UIColor(red: 113/255, green: 148/255, blue: 194/255, alpha: 1)

        tableView.separatorColor = UIColor.clear
        tableView.estimatedRowHeight = 10000
        tableView.rowHeight = UITableViewAutomaticDimension
        tableView.allowsSelection = false
        tableView.keyboardDismissMode = .interactive

        tableView.register(UINib(nibName: "YourChatViewCell", bundle: nil), forCellReuseIdentifier: "YourChat")
        tableView.register(UINib(nibName: "MyChatViewCell", bundle: nil), forCellReuseIdentifier: "MyChat")

        self.bottomView = ChatRoomInputView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: 60))
        bottomView.chatTextField.delegate = self
        bottomView.textSendButton.addTarget(self, action: #selector(self.chatTextSendButton(_:)), for: .touchUpInside)

    }

    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.chats.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let chat = self.chats[indexPath.row]
        if chat.isMyChat() {
            let cell = tableView.dequeueReusableCell(withIdentifier: "MyChat") as! MyChatViewCell
            cell.clipsToBounds = true
            // Todo: isRead
            cell.updateCell(text: chat.text, time: chat.time, isRead: true)
            return cell
        } else {
            let cell = tableView.dequeueReusableCell(withIdentifier: "YourChat") as! YourChatViewCell
            cell.clipsToBounds = true
            cell.updateCell(text: chat.text, time: chat.time, pic: RemoshinData.getDoctorPic())
            return cell
        }
    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        print(indexPath)
    }

    func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
        return 10
    }


    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true
    }

    func textFieldShouldClear(_ textField: UITextField) -> Bool {
        return true
    }

    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        textField.inputFieldBorderBottom(color: Utils.getColor(),
                                     x: textField.center.x,
                                     y: textField.center.y,
                                     w: textField.frame.size.width,
                                     h: textField.frame.size.height)
        bottomView.chatTextField = textField
        return true
    }
    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
        textField.inputFieldBorderBottom(color: UIColor.lightGray,
                                     x: textField.center.x,
                                     y: textField.center.y,
                                     w: textField.frame.size.width,
                                     h: textField.frame.size.height)
        return true
    }


    @objc func chatTextSendButton(_ sender: AnyObject) {
        let chatText = bottomView.chatTextField.text!

        if (chatText != "") {
            let _mainViewController = MainViewController()
            let jsonData = _mainViewController.sendChatText(_registration_id: getRegistrationId(), _chat_text: chatText)

            if(jsonData["status"].string! == "success") {
                socket.emit("client_to_server", with: ["update_chat"])

                let chat = ChatEntity(text: jsonData["chat_text"].string!, time: "", userType: .I)
                chats.append(chat)
                tableView.reloadData()

                bottomView.chatTextField.text = ""
            }
        }
    }
}

我想在应用程序运行时在控制台上看到“socket connected”消息。我认为插座有问题。但我不知道出了什么问题，因为没有找到错误消息。我怀疑我是否需要在 info.plist 中进行一些设置。但是，我不知道怎么写。

请给我一些建议？

Answer 1

socket.io-客户端-swift

var manager:SocketManager!

var socketIOClient: SocketIOClient!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    ConnectToSocket()
}

func ConnectToSocket() {

    manager = SocketManager(socketURL: URL(string: "your url")!, config: [.log(true), .compress])
    socketIOClient = manager.defaultSocket

    socketIOClient.on(clientEvent: .connect) {data, ack in
        print(data)
        print("socket connected")
    }

    socketIOClient.on(clientEvent: .error) { (data, eck) in
        print(data)
        print("socket error")
    }

    socketIOClient.on(clientEvent: .disconnect) { (data, eck) in
        print(data)
        print("socket disconnect")
    }

    socketIOClient.on(clientEvent: SocketClientEvent.reconnect) { (data, eck) in
        print(data)
        print("socket reconnect")
    }

    socketIOClient.connect()
}

更新

在您的情况下：SocketManager：管理器正在发布

通过管理器创建的套接字由管理器保留。因此，至少必须维护对管理器的单个强引用以保持套接字处于活动状态。

[“来自服务器的未知错误欢迎来到socket.io。”]

1. 检查服务器端和客户端的socket.io版本，两者不匹配可能是导致此错误的原因
2. 在 info.plist 中添加“App Transport Security Settings”键（字典类型）和子键“Allow Arbitrary Loads”（布尔类型），值为 YES。