Handling SIGPIPE in Swift 4

Question

I am trying to port over my Obj-C code to a Swift project and am having difficulties compiling the SIGPIPE handler:

func SigPipeHandler()
{
  print(@"We Got a Pipe Single :%d____________",s);
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, SigPipeHandler);
    // Override point for customization after application launch.
    return true
}

I am getting the error:

Cannot convert value of type '() -> ()' to expected argument type '(@convention(c) (Int32) -> Void)?'

[Swift command line tool exit callback](https://stackoverflow.com/q/42646857) | [Trap sigint in Cocoa macOS application](https://stackoverflow.com/q/50225548) — jscs, Mar 13 '19 at 01:03

score 1 · Accepted Answer · answered Mar 13 '19 at 01:26

let handler: @convention(c) (Int32) -> () = { sig in
    // handle the signal somehow
    print("error", sig)
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, handler);
    // Override point for customization after application launch.
    return true
}

Handling SIGPIPE in Swift 4

1 Answers1