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# RPC Message Types

## Topics

### Getting the Message Type

[`kIORPCMessageError`](/documentation/DriverKit/kIORPCMessageError)

[`kIORPCMessageKernel`](/documentation/DriverKit/kIORPCMessageKernel)

[`kIORPCMessageLocalHost`](/documentation/DriverKit/kIORPCMessageLocalHost)

[`kIORPCMessageObjectRefs`](/documentation/DriverKit/kIORPCMessageObjectRefs)

[`kIORPCMessageOneway`](/documentation/DriverKit/kIORPCMessageOneway)

[`kIORPCMessageOnqueue`](/documentation/DriverKit/kIORPCMessageOnqueue)

[`kIORPCMessageRemote`](/documentation/DriverKit/kIORPCMessageRemote)

[`kIORPCMessageSimpleReply`](/documentation/DriverKit/kIORPCMessageSimpleReply)


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