Constant libc::TCP_FASTOPEN_KEY
pub const TCP_FASTOPEN_KEY: ::c_int = 33;The portability is definied by:
#[cfg(all(not(target_os = "emscripten"), not(any())))]pub const TCP_FASTOPEN_KEY: ::c_int = 33;#[cfg(all(not(target_os = "emscripten"), not(any())))]