# CFHTTPMessageCreateEmpty(_:_:) Creates and returns a new, empty `CFHTTPMessage` object. ``` func CFHTTPMessageCreateEmpty(_ alloc: CFAllocator?, _ isRequest: Bool) -> Unmanaged ``` ## Parameters `isRequest` A flag that determines whether to create an empty message request or an empty message response. Pass `TRUE` to create an empty request message; pass `FALSE` to create an empty response message. ## Return Value A new `CFHTTPMessage` object or `NULL` if there was a problem creating the object. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029). ## Discussion Call [`CFHTTPMessageAppendBytes(_:_:_:)`](/documentation/CFNetwork/CFHTTPMessageAppendBytes(_:_:_:)) to store an incoming, serialized HTTP request or response message in the empty message object. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)