How to connect Socket in Swift 4

Question

I want to connect my app to the socket here is the code :-

  import UIKit
  import SocketIO

 class SocketIOManager: NSObject {
static let manager = SocketManager(socketURL: URL(string: "myURL")!)
static let socket = manager.defaultSocket


class func connectSocket() {
    let token = UserDefaults.standard.getAccessToken()

    self.manager.config = SocketIOClientConfiguration(
        arrayLiteral: .connectParams(["token": token]), .secure(true) // problem is here in passing token value
        )
        socket.connect()
}

class func receiveMsg() {
    socket.on("new message here") { (dataArray, ack) in

        print(dataArray.count)

    }
}
}

I created a new class SocketIOManager.swift and I invoke my function in view controller

  SocketIOManager.connectSocket()

and I am not using the localhost url but still my app is not connected to the socket I think I followed this How to connect with Socket.io? Swift 4 and I also add App Transport Security in info.plist. Any help? The problem is when I am passing the token value it gives me error otherwise it is working properly. Should I need to pass token when using socket?

It is clear that there is a problem with the url. Try the connection through http://amritb.github.io/socketio-client-tool/ message and tell me if the connection was successful or not . — a.masri, Apr 24 '18 at 12:48
If the problem is not resolved please open discussion, I will send you Socket url for testing — a.masri, Apr 24 '18 at 12:56
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/169677/discussion-between-viper-and-a-masri). — viper, Apr 24 '18 at 13:06

Seyed Samad Gholamzadeh · Accepted Answer · 2018-04-24T12:55:31.473

4

You should make a shared property in your SocketIOManager class like this:

static let shared = SocketIOManager()

and then create init() like this:

    var socket: SocketIOClient!

    // defaultNamespaceSocket and swiftSocket both share a single connection to the server
    let manager = SocketManager(socketURL: URL(string: "http://localhost:3000")!, config: [.log(true), .compress])

    override init() {
        super.init()

        socket = manager.defaultSocket
        }

and finally write your methods like this:

func connectSocket() {
    let token = UserDefaults.standard.getAccessToken()

    self.manager.config = SocketIOClientConfiguration(
        arrayLiteral: .connectParams(["token": token]), .secure(true)
        )
        socket.connect()
}

func receiveMsg() {
    socket.on("new message here") { (dataArray, ack) in

        print(dataArray.count)

    }
}

and call your method like this:

SocketIOManager.shared.connectSocket()

The point is that you should make a strong reference to manager property in your viewController and static let shared = SocketIOManager() you do this for you!

edited Apr 24 '18 at 12:55

answered Apr 24 '18 at 12:52

Seyed Samad Gholamzadeh

617
4
15

ERROR SocketEngine: An SSL error has occurred and a secure connection to the server cannot be made. I am getting this error sir – viper Apr 24 '18 at 13:05
I think this is AppTransport security error. Isn't it? Did you set it up correctly? – Seyed Samad Gholamzadeh Apr 24 '18 at 13:13
its not I did what app transport needs – viper Apr 24 '18 at 13:16
So connect to your server manager and check if there is some additional configuration for connecting to server – Seyed Samad Gholamzadeh Apr 24 '18 at 13:18
1

it is correct but I want to know one thing is it necessary to pass token – viper Apr 24 '18 at 13:42
Thanks man. ".connectParams(["token": token]" saved my life!:) – Hot'n'Young Nov 27 '20 at 10:17

score 2 · Answer 2 · answered Apr 24 '18 at 12:56

Is your URL secured under HTTPS? If it is not, that could be the problem, due to App Transport Security restrictions.

See Info Plist Reference

See also this post here.

If that's not the problem. I'd suggest to check if your Socket version on both sides, server and client, are the same. Recently I had a problem because of that.

Hope it helps!

Pramod Reddy · Answer 3 · 2018-04-24T13:03:52.630

2

try this Example:

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

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

 func gotConnection(){

 socket.on("new message here") { (dataArray, ack) in

    print(dataArray.count)

     }
   }

edited Apr 24 '18 at 13:03

answered Apr 24 '18 at 12:58

Pramod Reddy

126
9

what changes you made?? – viper Apr 24 '18 at 13:10
my code is working but when I am passing the token value its not working – viper Apr 24 '18 at 13:13
socket.on(client: SocketEngineClient, url: URL, options: [String : Any]?) in } } – Pramod Reddy Apr 24 '18 at 17:36
pass url and options in the place send token try it this after connect socket to server – Pramod Reddy Apr 24 '18 at 17:37

How to connect Socket in Swift 4

3 Answers3

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