Can NWConnection.receive(minimumIncompleteLength:maximumLength:) return nil data for UDP while connection remains .ready?

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I’m using Network Framework with UDP and calling:

connection.receive(minimumIncompleteLength: 1,
                   maximumLength: 1500) { data, context, isComplete, error in
    ... // Some Logic
}

Is it possible for this completion handler to be called with data==nil if I haven't received any kind of error, i.e., error==nil and the connection is still in the .ready state?

Answered by DTS Engineer in 875918022

That’s not the right API to use for receiving datagrams. Rather, use the receiveMessage(completion:) method or one of its variants. That ensures that you get the entire datagram in one hit.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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DTS Engineer OP

Apple

6h

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That’s not the right API to use for receiving datagrams. Rather, use the receiveMessage(completion:) method or one of its variants. That ensures that you get the entire datagram in one hit.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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