Client: "Address already in use” error

[pointum]

The Client does not show the TouchBar on launch. If I go to the Home screen and reactivate the app, it starts working.

I’m running from the latest source code.

The problem is that on app launch startListening is called twice in a row:

• -[ViewController viewDidAppear:]
• UIApplicationDidBecomeActiveNotification notification

The second call fails with:

TouchBarClient[626:55698] Failed to listen on localhost:1337: Error Domain=NSPOSIXErrorDomain Code=48 "Address already in use”

Here’s what my print debugging looks like when I start the Client:

// -[ViewController viewDidAppear:]
stopListening: (null)
startListening: <PTChannel: 0x2824aeac0 (closed)>
listenOnPort callback: <PTChannel: 0x2824aeac0 (listening)>

// UIApplicationDidBecomeActiveNotification
stopListening: <PTChannel: 0x2824aeac0 (listening)>
startListening: <PTChannel: 0x28245db40 (closed)>
listenOnPort callback: <PTChannel: 0x28245db40 (closed)>
Failed to listen on localhost:1337: Error Domain=NSPOSIXErrorDomain Code=48 "Address already in use"

Maybe a fix should be to check if is already listening and then skip unnecessary stop/restart.