Function extract_sni_from_client_hello_record

pub fn extract_sni_from_client_hello_record(
    i: &[u8],
) -> Result<Option<Domain>, OpaqueError>

Parse a ClientHello from the raw “wire” bytes to find the SNI Host value.

This function is optimised to find the SNI value and nothing else. Use parse_client_hello in case you need other content in the client hello, or the client hello as a whole.

This function is not infallible, it can return an error if the input is not a valid TLS ClientHello message or if there is unexpected trailing data. It will return None on a value ClientHello without a SNI Host value.