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# MIDICIProfileResponderDelegate

A protocol that defines the methods to respond to MIDI-CI responder life-cycle events.

```
protocol MIDICIProfileResponderDelegate : NSObjectProtocol
```

## Topics

### Protocol Methods

[`connectInitiator(_:with:)`](/documentation/CoreMIDI/MIDICIProfileResponderDelegate/connectInitiator(_:with:))

Enables a MIDI-CI initiator to create a session or reject the connection attempt.

[`handleData(for:onChannel:data:)`](/documentation/CoreMIDI/MIDICIProfileResponderDelegate/handleData(for:onChannel:data:))

Processes MIDI data for a profile and channel.

[`willSetProfile(_:onChannel:enabled:)`](/documentation/CoreMIDI/MIDICIProfileResponderDelegate/willSetProfile(_:onChannel:enabled:))

Provides an opportunity to perform an action before the system sets the profile.

[`initiatorDisconnected(_:)`](/documentation/CoreMIDI/MIDICIProfileResponderDelegate/initiatorDisconnected(_:))

Provides an opportunity to perform an action after the system disconnects the initiator.


---

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