Function turtls_app_proto 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn turtls_app_proto(
    tls_conn: *const TurtlsConn,
) -> *const c_char

Returns a pointer to name of the negotiated application protocol.

The string is nul-terminated.

Safety

tls_conn must be valid.

Lifetime: the returned pointer is valid for the entire lifetime of connection. If a new connection is created with the same allocation, pointer is still valid and will point to the new application protocol.