MultipeerConnectivity does not work as expected on iOS 14

Question

When the MCBrowserViewController is invoked

-[MCBrowserViewController advertiser:didNotStartAdvertisingPeer:]: unrecognized selector sent to instance

error message is thrown.

when MCAdvertiserAssistant tries starts advertising

-[MCAdvertiserAssistant advertiser:didNotStartAdvertisingPeer:]: unrecognized selector sent to instance

error message is thrown.

Struck and unable to proceed. My business depends on MultipeerConnectivity framework.

Any help will be greatly appreciated.

Joannejoannes

Answer 1

let assistant = MCAdvertiserAssistant(serviceType: "tictactoe", discoveryInfo: nil, session: session)
let browser = MCBrowserViewController(serviceType: "tictactoe", session: session)

Insert in the info.plist the following fields:

1. Privacy - Local Network Usage Description
2. Bonjour services with the following initialisation: _tictactoe._tcp and _tictactoe._udp

Hygrometry

What are these value actually?_tictactoe._tcp and _tictactoe._udp – Joannejoannes

Thanks for your answer actually this solution does not solve the issue. Btw the issue is not happening in Simulator. – Joannejoannes

Those are the identifiers you are using while creating the advertiser and browser. – Hygrometry

What value should i use ? – Joannejoannes

How do you create your MCBrowserViewController and MCAdvertiserAssistant? Can you show your code? – Hygrometry

advertiser = MCAdvertiserAssistant(serviceType: identifier, discoveryInfo: nil, session: session) browserController = MCBrowserViewController(serviceType: identifier, session: session) – Joannejoannes

What is the value of the identifier variable? – Hygrometry

both are same "PARTY_ID" – Joannejoannes

so you should add as _PARTY_ID._tcp and _PARTY_ID._udp – Hygrometry

Crash got fixed but the connection gets declined now. you got any idea? – Joannejoannes

I am unable to see Hosted Device while Joining session. Please help guys – Colonist

Answer 2

i did face some issues implementing MultipeerConnectivity too. After some research found a fix.. what i did was

1. i followed https://www.hackingwithswift.com/example-code/networking/how-to-create-a-peer-to-peer-network-using-the-multipeer-connectivity-framework this.
2. added Bonjour services (value- _*serviceType*._tcp) and Privacy - Local Network Usage Description in Info.plist.
3. removed SceneDelegate related stuff as in Opt out of UISceneDelegate/SwiftUI on iOS

clean and build.

Note:i am working with Xcode12 and iOS14.

Cunaxa

Crash got fixed but the connection gets declined now. you got any idea? – Joannejoannes