ListenOptions

    pub const ListenOptions = struct {
        /// How many connections the kernel will accept on the application's behalf.
        /// If more than this many connections pool in the kernel, clients will start
        /// seeing "Connection refused".
        kernel_backlog: u31 = default_kernel_backlog,
        /// Sets SO_REUSEADDR and SO_REUSEPORT on POSIX.
        /// Sets SO_REUSEADDR on Windows, which is roughly equivalent.
        reuse_address: bool = false,
        /// Only connection-oriented modes may be used here, which includes:
        /// * `Socket.Mode.stream`
        /// * `Socket.Mode.seqpacket`
        mode: Socket.Mode = .stream,
        /// Only connection-oriented protocols may be used here, which includes:
        /// * `Protocol.tcp`
        /// * `Protocol.tp`
        /// * `Protocol.dccp`
        /// * `Protocol.sctp`
        protocol: Protocol = .tcp,
    }