C# Signature:

       public enum ioCommand : int
    {
        /// <summary>
        /// Use to determine the amount of data pending in the network's input buffer that can be read from socket s.
        /// </summary>
        FIONREAD = 1074030207,

        /// <summary>
        /// The *argp parameter is a pointer to an unsigned long value.
        /// Set *argp to a nonzero value if the nonblocking mode should be enabled,
        /// or zero if the nonblocking mode should be disabled.
        /// </summary>
        FIONBIO = -2147195266,

        FIOASYNC = 2147195267,
        SIOCSHIWAT = 2147192064,
        SIOCGHIWAT = 1074033409,
        SIOCSLOWAT = 2147192062,
        SIOCGLOWAT = 1074033411,

        /// <summary>
        /// Use to determine if all out of band (OOB) data has been read.
        /// </summary>
        SIOCATMARK = 1074033415
    }

VB Signature:

User-Defined Types:

None.

Alternative Managed API:

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Notes:

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