# SSLGetPeerDomainName(_:_:_:) Retrieves the peer domain name specified previously. ``` func SSLGetPeerDomainName(_ context: SSLContext, _ peerName: UnsafeMutablePointer, _ peerNameLen: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `context` An SSL session context reference. `peerName` On return, points to the peer domain name. `peerNameLen` A pointer to the length of the peer domain name. Before calling this function, retrieve the peer domain name length by calling the function [`SSLGetPeerDomainNameLength(_:_:)`](/documentation/Security/SSLGetPeerDomainNameLength(_:_:)). ## Return Value A result code. See [Secure Transport Result Codes](/documentation/Security/secure-transport-result-codes). ## Discussion If you previously called the [`SSLSetPeerDomainName(_:_:_:)`](/documentation/Security/SSLSetPeerDomainName(_:_:_:)) function to specify a fully qualified domain name for the peer certificate, you can use the [`SSLGetPeerDomainName(_:_:_:)`](/documentation/Security/SSLGetPeerDomainName(_:_:_:)) function to retrieve the domain name. --- 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)