# sec_protocol_metadata_copy_server_name(_:) ``` func sec_protocol_metadata_copy_server_name(_ metadata: sec_protocol_metadata_t) -> UnsafePointer? ``` ## Parameters `metadata` A `sec_protocol_metadata_t` instance. ## Return Value Returns A NULL-terminated string carrying the server name, or NULL if none was provided. ## Discussion \abstract Obtain a copy of the server name offered by a client or server during connection establishmet. This is the value commonly carried in the TLS SNI extesion. The caller is expected to `free` the output string when it is no longer needed. --- 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)