Error

        pub const Error = error{
            /// Insufficient memory or other resource internal to the operating system.
            SystemResources,
            /// Per-process limit on the number of open file descriptors has been reached.
            ProcessFdQuotaExceeded,
            /// System-wide limit on the total number of open files has been reached.
            SystemFdQuotaExceeded,
            /// Local end has been shut down on a connection-oriented socket, or
            /// the socket was never connected.
            SocketUnconnected,
            /// The socket type requires that message be sent atomically, and the
            /// size of the message to be sent made this impossible. The message
            /// was not transmitted, or was partially transmitted.
            MessageOversize,
            /// Network connection was unexpectedly closed by sender.
            ConnectionResetByPeer,
            /// The local network interface used to reach the destination is offline.
            NetworkDown,
            /// A connectionless packet was previously sent successfully,
            /// however, it was not received because no service is operating at
            /// the destination port of the transport on the remote system.
            /// This caused an ICMP port unreachable packet to be returned to
            /// the OS where it was queued up to be reported at the next call
            /// to send or receive on the bound socket.
            PortUnreachable,
            /// The remote peer did not respond to ongoing communication, causing the
            /// OS to abort the connection.
            ConnectionTimedOut,
        } || Io.UnexpectedError