---
title: "init(message:reply:sendSize:replySize:)"
framework: IOKit
role: symbol
role_heading: Initializer
platforms: [Mac Catalyst 15.0+, macOS 12.0+, xcode 13.0+]
path: iokit/iorpc/3757884-init
---

# init(message:reply:sendSize:replySize:)

## Declaration

```swift
init(message: UnsafeMutablePointer<IORPCMessageMach>!, reply: UnsafeMutablePointer<IORPCMessageMach>!, sendSize: UInt32, replySize: UInt32)
```