socket.io swift client emit with callback function

Question

We have a socket.io v2 server running and mobile apps are currently communicating with this server successfully. I now want to migrate the watchOS 6.0 app from REST services to socket.io.

I imported SocketIO-Swift-Client 15.0.0 and Starscream 3.1.1 and assigned my manager and established a connection.

init(){
    socket = manager.defaultSocket
    socket.connect()
}

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

2021-06-08 12:56:51.646433+0200 someApp WatchKit Extension[18187:708411] LOG SocketIOClient{/}: Handling event: ping with data: []
2021-06-08 12:56:51.646433+0200 someApp WatchKit Extension[18187:709273] LOG SocketEngine: Writing poll:  has data: false
2021-06-08 12:56:51.646599+0200 someApp WatchKit Extension[18187:709273] LOG SocketEnginePolling: Sending poll:  as type: 2
2021-06-08 12:56:51.647051+0200 someApp WatchKit Extension[18187:709273] LOG SocketEnginePolling: Created POST string: 1:2
2021-06-08 12:56:51.647580+0200 someApp WatchKit Extension[18187:709273] LOG SocketEnginePolling: POSTing
2021-06-08 12:56:51.647902+0200 someApp WatchKit Extension[18187:709273] LOG SocketEnginePolling: Doing polling POST http://someAdress/socket.io/?transport=polling&b64=1&sid=cGzUF60eLZLoF5fAAADA
2021-06-08 12:56:51.823879+0200 someApp WatchKit Extension[18187:709305] LOG SocketEnginePolling: Got polling response
2021-06-08 12:56:51.824562+0200 someApp WatchKit Extension[18187:709305] LOG SocketEnginePolling: Got poll message: 1:3
2021-06-08 12:56:51.825178+0200 someApp WatchKit Extension[18187:709305] LOG SocketEngine: Got message: 3
2021-06-08 12:56:51.826034+0200 someApp WatchKit Extension[18187:708411] LOG SocketIOClient{/}: Handling event: pong with data: []
2021-06-08 12:56:51.826128+0200 someApp WatchKit Extension[18187:709305] LOG SocketEnginePolling: Doing polling GET http://someAdress/socket.io/?transport=polling&b64=1&sid=cGzUF60eLZLoF5fAAADA

When i place my emit with a completionHandler to get the responseData from the server i miss the ability to define the return type of the responseData.

socket.emit("request", with: ["Authenticate", param1, param2], completion: handleResponse)

func handleResponse()->(){
    debugPrint("Hello World!")
}

In TypeScript this works fine...

async call(command, param1, param2) {
   return new Promise((accept, reject) => {
     this.socket.emit('request', command, param1, param2, accept);
   });

Do you know of any way, how i can set a callback function and get the data that is placed in this callback like it is done in TypeScript.

Thanks in advance for your answers!

socket.io swift client emit with callback function

0 Answers