# nw_ws_response_add_additional_header(_:_:_:) Adds an additional HTTP header to a WebSocket server response. ``` func nw_ws_response_add_additional_header(_ response: nw_ws_response_t, _ name: UnsafePointer, _ value: UnsafePointer) ``` --- 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)