Connection error with SwiftNIO on macOS with SwiftUI and Xcode 12

Related Projects SwiftNIO
1

Hello there,

I'm having getting this connection error, when trying to connect to a MySQL database using SwiftNIO (vapor/mysql-kit) on macOS with SwiftUI and Xcode 12

[si_destination_compare] socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL) failed: Operation not permitted
▿ connect(descriptor:addr:size:): Operation not permitted (errno: 1)
  - failureDescription: "connect(descriptor:addr:size:)"
  ▿ error: NIO.IOError.(unknown context at $10068db6c).Error.errno
    - errno: 1

Here is the code for connecting, pretty straight forward, but maybe I have something wrong:

        let eventLoopGroup = MultiThreadedEventLoopGroup(numberOfThreads: 2)
        self.eventLoopGroup = eventLoopGroup
        do {
            connection = try MySQLConnection.connect(to: .makeAddressResolvingHost("127.0.0.1", port: 3306),
                                                     username: "root",
                                                     database: "foo",
                                                     password: "test1234",
                                                     tlsConfiguration: .forClient(certificateVerification: .none),
                                                     logger: .init(label: "foo"),
                                                     on: eventLoopGroup.next()).wait()
        } catch {
            dump(error)
        }

This same code works fine when running from a swift executable from the command line, created with swift package init --type executable.

Wondering if there are any permissions needed for macOS apps on Xcode to open sockets, any help would be appreciated.

Thank you.

2

You need to make sure to enable "Outgoing Connections (Client)" in your macOS app's Signing & Capabilities settings.

1 Like
3

Thanks, that was it.