# CFHTTPMessageCreateRequest(_:_:_:_:) Creates and returns a `CFHTTPMessage` object for an HTTP request. ``` func CFHTTPMessageCreateRequest(_ alloc: CFAllocator?, _ requestMethod: CFString, _ url: CFURL, _ httpVersion: CFString) -> Unmanaged ``` ## Parameters `requestMethod` The request method for the request. Use any of the request methods allowed by the HTTP version specified by `httpVersion`. `url` The URL to which the request will be sent. `httpVersion` The HTTP version for this message. Pass `kCFHTTPVersion1_0` or `kCFHTTPVersion1_1`. ## 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 This function returns a `CFHTTPMessage` object that you can use to build an HTTP request. Continue building the request by calling[`CFHTTPMessageSetBody(_:_:)`](/documentation/CFNetwork/CFHTTPMessageSetBody(_:_:)) to set the message’s body. Call [`CFHTTPMessageCopyHeaderFieldValue(_:_:)`](/documentation/CFNetwork/CFHTTPMessageCopyHeaderFieldValue(_:_:)) to set the message’s headers. If you are using a `CFReadStream` object to send the message, call [`CFReadStreamCreateForHTTPRequest(_:_:)`](/documentation/CFNetwork/CFReadStreamCreateForHTTPRequest(_:_:)) to create a read stream for the request. If you are not using `CFReadStream`, call [`CFHTTPMessageCopySerializedMessage(_:)`](/documentation/CFNetwork/CFHTTPMessageCopySerializedMessage(_:)) to make the message ready for transmission by serializing it. --- 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)