RemoteAdminProtocol = 2

     SamProtocol = 8

    RemoteAdminProtocol = 2,

    SamProtocol = 8,

            AppleFilingProtocol = 0x00000040,

    AppleFilingProtocol = 0x00000040,

    IsProtocol = 0x1000,

    SupportedUriProtocols,

  ' issue all commands to the NetBIOS protocol

        FileRemoteProtocolInfo = 13, // 0xD

    Number of the TCP/IP port on the server to connect to. Can be one of the values in the following list. If this parameter is set to INTERNET_INVALID_PORT_NUMBER, the function uses the default port for the specified service. These values do not cause the function to use this protocol. The value sets the port to be used. A flag must be used to set the service.

    Address of a null-terminated string that contains the name of the user to log on. If this parameter is NULL, the function uses an appropriate default, except for HTTP. A NULL parameter in HTTP causes the server to return an error. For the FTP protocol, the default is anonymous.

Having a connect function for all protocols, even those that do not use persistent connections, lets an application communicate common information about several requests using a single function call. In addition, this allows for future versions of Internet protocols that do not require a connection to be established for every client request.

For maximum efficiency, applications using the Gopher and HTTP protocols should try to minimize calls to InternetConnect and avoid calling this function for every transaction requested by the user. One way to accomplish this is to keep a small cache of handles returned from InternetConnect; when the user makes a request to a previously accessed server, that session handle is still available.

        /// Pup protocols: e.g. BSP [value = 4].

        /// Mit CHAOS protocols [value = 5].

        /// XEROX NS protocols [value = 6].

        /// IPX protocols: IPX, SPX, etc [value = 6].

        /// ISO protocols [value = 7].

        /// datakit protocols [value = 9].

        /// CCITT protocols, X.25 etc [value = 10].

        /// Protocols from Firefox [value = 19].

        /// Network Designers OSI & gateway enabled protocols [value = 28].

        FileRemoteProtocolInfo = 13, // 0xD

    ///This transaction manager encountered a protocol error with another TIP transaction manager.

    [Description("This transaction manager encountered a protocol error with another TIP transaction manager.")]

    public const int XACT_E_TIP_PROTOCOL_ERROR = unchecked((int)0x8004D020);

    ///The Kerberos subsystem encountered an error.  A service for user protocol request was made against a domain controller which does not support service for user.

    [Description("The Kerberos subsystem encountered an error.  A service for user protocol request was made against a domain controller which does not support service for user.")]

    ///The requested protocols are incompatible with the protocol currently in use with the smart card.

    [Description("The requested protocols are incompatible with the protocol currently in use with the smart card.")]

    '''This transaction manager encountered a protocol error with another TIP transaction manager.

    <Description("This transaction manager encountered a protocol error with another TIP transaction manager.")> _

    Public Const XACT_E_TIP_PROTOCOL_ERROR As Integer = CInt(&H8004d020UI)

    '''The Kerberos subsystem encountered an error.  A service for user protocol request was made against a domain controller which does not support service for user.

    <Description("The Kerberos subsystem encountered an error.  A service for user protocol request was made against a domain controller which does not support service for user.")> _

    '''The requested protocols are incompatible with the protocol currently in use with the smart card.

    <Description("The requested protocols are incompatible with the protocol currently in use with the smart card.")> _

        FEATURE_DISABLE_MK_PROTOCOL = 7,

        FEATURE_PROTOCOL_LOCKDOWN = 14,

        FEATURE_DISABLE_TELNET_PROTOCOL = 25,

    public enum KERB_PROTOCOL_MESSAGE_TYPE : uint

Enum KERB_PROTOCOL_MESSAGE_TYPE

    CrmProtocolAlreadyExists = 0xc019000f,

    CrmProtocolNotFound = 0xc0190011,

    internal enum PROTOCOL_INT : int

        //control message protocol  

        //internet group management protocol  

        //user datagram protocol  

Enum PROTOCOL_INT

        /// <summary>707. There was an error related to the X.25 protocol. </summary>

        /// <summary>720. The connection attempt failed because your computer and the remote computer could not agree on PPP control protocols. </summary>

        ERROR_PPP_NO_PROTOCOLS_CONFIGURED,

        /// <summary>724. The IPX protocol cannot dial out on the modem (or other connecting device) because this computer is not configured for dialing out (it is an IPX router). </summary>

        /// <summary>725. The IPX protocol cannot dial in on the modem (or other connecting device) because this computer is not configured for dialing in (the IPX router is not installed). </summary>

        /// <summary>726. The IPX protocol cannot be used for dialing out on more than one modem (or other connecting device) at a time. </summary>

        /// <summary>729. SLIP cannot be used unless the IP protocol is installed. </summary>

        /// <summary>731. The protocol is not configured. </summary>

        ERROR_PROTOCOL_NOT_CONFIGURED,

        /// <summary>732. Your computer and the remote computer could not agree on PPP control protocols. </summary>

        /// <summary>733. Your computer and the remote computer could not agree on PPP control protocols. </summary>

        /// <summary>734. The PPP link control protocol was terminated. </summary>

        /// <summary>736. The remote computer terminated the control protocol. </summary>

        /// <summary>739. The authentication protocol required by the remote server cannot use the stored password. Redial, entering the password explicitly. </summary>

        /// <summary>753. The connection could not be disconnected because it was created by the multi-protocol router. </summary>

        /// <summary>766. A certificate could not be found. Connections that use the L2TP protocol over IPSec require the installation of a machine certificate, also known as a computer certificate.  </summary>

        /// <summary>782. Connection Sharing (NAT) is currently installed as a routing protocol, and must be removed before enabling Internet Connection Sharing. </summary>

        /// <summary>794. The Framed Protocol RADIUS attribute for this user is not PPP.  </summary>

        ERROR_UNKNOWN_FRAMED_PROTOCOL,

        /// <summary>798. A certificate could not be found that can be used with the Extensible Authentication Protocol (EAP).  </summary>

        /// <summary>806. A connection between your computer and the VPN server has been started, but the VPN connection cannot be completed. The most common cause for this is that at least one Internet device (for example, a firewall or a router) between your computer and the VPN server is not configured to allow Generic Routing Encapsulation (GRE) protocol packets. </summary>

        /// <summary>825. Point-to-Point Tunneling Protocol (PPTP) is incompatible with IPv6. Change the type of virtual private network to Layer Two Tunneling Protocol (L2TP). </summary>

        /// raw-protocol interface

     /// A USHORT value that specifies information about the protocol type for the session. This is one of the following values:<BR/>

     /// 2 - The RDP protocol.<BR/>

     WTSClientProtocolType,

    WTSClientProtocolType

     WTSClientProtocolType,

    WTSClientProtocolType

           OAIF_URL_PROTOCOL =    0x00000040,   // Vista+: cszFile is actually a URI scheme; show handlers for that scheme

    HCERTSTORE   WINAPI CertOpenSystemStore(HCRYPTPROV hprov, LPTCSTR szSubsystemProtocol);

        IF_TYPE_LAP_D = 77,  // Link Access Protocol D

        IF_TYPE_BSC = 83,  // Bisynchronous Protocol

        IF_TYPE_ASYNC = 84,  // Asynchronous Protocol

        IF_TYPE_ARAP = 88,  // Appletalk Remote Access Protocol

        IF_TYPE_HOSTPAD = 90,  // CCITT-ITU X.29 PAD Protocol

        IF_TYPE_X25_MLP = 121,  // Multi-Link Protocol

    //http://stackoverflow.com/questions/1148778/how-do-i-access-arp-protocol-information-through-c-net

        public PROTOCOL dwProtocol;

    internal enum PROTOCOL : uint

        public PROTOCOL dwProtocol;

            filter.dwProtocol = PROTOCOL.TCP;

    internal enum PROTOCOL : uint

        public PROTOCOL dwProtocol;

            filter.dwProtocol = PROTOCOL.TCP;

    internal enum PROTOCOL : uint

        public PROTOCOL dwProtocol;

            filter.dwProtocol = PROTOCOL.TCP;

    public enum PROTOCOL : uint

        public PROTOCOL dwProtocol;

          public int       dwfNetProtocols;

          public int       dwFramingProtocol;

    public enum RasNetProtocols

    public enum RasFramingProtocol

    Public ProtocolMajor As Short

    Public ProtocolMinor As Short

    /// Pup protocols: e.g. BSP [value = 4].

    /// Mit CHAOS protocols [value = 5].

    /// XEROX NS protocols [value = 6].

    /// IPX protocols: IPX, SPX, etc [value = 6].

    /// ISO protocols [value = 7].

    /// datakit protocols [value = 9].

    /// CCITT protocols, X.25 etc [value = 10].

    /// Protocols from Firefox [value = 19].

    /// Network Designers OSI &amp; gateway enabled protocols [value = 28].

    public enum PROTOCOL : short

    //control message protocol  

    //internet group management protocol  

    //user datagram protocol  

    /// raw-protocol interface

        /// WSAPROTOCOL_INFOA structure

        SO_PROTOCOL_INFOA       =   0x2004,

        /// WSAPROTOCOL_INFOW structure

        SO_PROTOCOL_INFOW       =   0x2005,

    public static extern uint WSAAddressToString(ref sockaddr_in lpsaAddress, int dwAddressLength, IntPtr lpProtocolInfo,

    public static extern uint WSAAddressToString(ref  sockaddr_in6 lpsaAddress, int dwAddressLength, IntPtr lpProtocolInfo,

internal struct WSAPROTOCOL_INFO

    public WSAPROTOCOLCHAIN ProtocolChain;

    public int iProtocol;

    public int iProtocolMaxOffset;

    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 255 /* WSAPROTOCOL_LEN */ + 1)]

    public char[] szProtocol;

internal struct WSAPROTOCOLCHAIN

    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 7 /* MAX_PROTOCOL_CHAIN */)]

Declare Function WSAPROTOCOL_INFO Lib "ws2_32.dll" (TODO) As TODO

  public static extern IntPtr WSASocket(ADDRESS_FAMILIES af, SOCKET_TYPE socket_type, PROTOCOL protocol,

        IntPtr lpProtocolInfo, Int32 group, OPTION_FLAGS_PER_SOCKET dwFlags);

        /// Pup protocols: e.g. BSP [value = 4].

        /// Mit CHAOS protocols [value = 5].

        /// XEROX NS protocols [value = 6].

        /// IPX protocols: IPX, SPX, etc [value = 6].

        /// ISO protocols [value = 7].

        /// datakit protocols [value = 9].

        /// CCITT protocols, X.25 etc [value = 10].

        /// Protocols from Firefox [value = 19].

        /// Network Designers OSI &amp; gateway enabled protocols [value = 28].

        /// raw-protocol interface

    public enum PROTOCOL : short

        //control message protocol  

        //internet group management protocol  

        //user datagram protocol  

        // WSAPROTOCOL_INFOA structure  

        SO_PROTOCOL_INFOA = 0x2004,

        // WSAPROTOCOL_INFOW structure  

        SO_PROTOCOL_INFOW = 0x2005,

                      IntPtr        lpProtocolInfo,

• lpProtocolInfo: The WSAPROTOCOL_INFO structure associated with the provider to be used. If this is NULL, the call is routed to the provider of the first protocol supporting the indicated AddressFamily.
TODO - a short description
1/30/2015 9:16:48 AM - -198.169.188.229

    public int dwProtocols;

        /// <summary> 2470 - Try down-level (remote admin protocol) version of API instead. </summary>

    public static PropertyKey WPD_DEVICE_PROTOCOL = new PropertyKey(0x26D4979A, 0xE643, 0x4626, 0x9E, 0x2B, 0x73, 0x6D, 0xC0, 0xC9, 0x2F, 0xDC, 6);

        public const int ERROR_INVALID_OPLOCK_PROTOCOL = 301;

        public const int ERROR_PROTOCOL_UNREACHABLE = 1233;

        /// The kerberos protocol encountered an error while validating the

        /// The kerberos protocol encountered an error while attempting to utilize

        /// The RPC protocol sequence is not supported.

        /// The RPC protocol sequence is invalid.

        /// No protocol sequences have been registered.

        /// There are no protocol sequences.

        /// A remote procedure call (RPC) protocol error occurred.

        public const int RPC_S_PROTOCOL_ERROR = 1728;

        /// The RPC protocol sequence was not found.

        /// The specified protocol driver is invalid.

        /// The specified protocol driver was not found in the system path.

        /// A protocol error occurred.

        public const int ERROR_DS_PROTOCOL_ERROR = 8225;

        /// TCP/IP network protocol not installed.

        /// A protocol was specified in the socket function call that does not support the semantics of the socket type requested.

        /// The requested protocol has not been configured into the system, or no implementation for it exists.

        /// The protocol family has not been configured into the system or no implementation for it exists.

        /// An address incompatible with the requested protocol was used.

        /// Only one usage of each socket address (protocol/network address/port) is normally permitted.

        /// This transaction manager encountered a protocol error with another TIP transaction manager.

        public const int XACT_E_TIP_PROTOCOL_ERROR = (int)(0x8004D020 - 0x100000000);

        /// The requested protocols are incompatible with the protocol currently in use with the smart card.

        void GetBindResult(out Guid pclsidProtocol, out uint pdwResult, [MarshalAs(UnmanagedType.LPWStr)] out string pszResult, [In, Out] ref uint dwReserved);

    Sub GetBindResult(ByRef pclsidProtocol As Guid, ByRef pdwResult As UInteger, <MarshalAs(UnmanagedType.LPWStr)> ByRef pszResult As String, <[In](), [Out]()> ByRef dwReserved As UInteger)

    ,BINDSTATUS_PROTOCOLCLASSID

        INET_E_UNKNOWN_PROTOCOL = 0x800C000D,

        INET_E_USE_DEFAULT_PROTOCOLHANDLER = 0x800C0011,

                case HRESULTS.INET_E_UNKNOWN_PROTOCOL:

                    Description = "Unknown Protocol.";break;

public interface IInternetProtocolSink

    void Switch(ref _tagPROTOCOLDATA pProtocolData);

Public Interface IInternetProtocolSink

    Sub Switch(ByRef pProtocolData As _tagPROTOCOLDATA)

interface IInternetProtocolEx {

Interface IInternetProtocolEx

interface IInternetProtocolRoot {

      [MarshalAs(UnmanagedType.Interface)] IInternetProtocolSink protocolSink,

    int Continue([In] ref PROTOCOLDATA protocolData);

Interface IInternetProtocolRoot

IInternetProtocol, IInternetProtocolSink, IInternetBindInfo, PROTOCOLDATA

public interface IInternetProtocolSink

    void Switch(ref _tagPROTOCOLDATA pProtocolData);

Public Interface IInternetProtocolSink

    Sub Switch(ByRef pProtocolData As _tagPROTOCOLDATA)

     UInt32 dwPreferredProtocols,

     out UInt32 pdwActiveProtocol);

Value of dwPreferredProtocols

SCARD_PROTOCOL_T0 - Use the T=0 protocol (value = 0x00000001)

SCARD_PROTOCOL_T1 - Use the T=1 protocol (value = 0x00000002)

SCARD_PROTOCOL_RAW - Use with memory type cards (value = 0x00000004)

DWORD dwActiveProtocol;

    SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);

    uint dwPrefProtocol,

    ref IntPtr ActiveProtocol);

        IntPtr ActiveProtocol = IntPtr.Zero;

            result = SCardConnect(hContext, readerName, 2, 3, ref phCard, ref ActiveProtocol);

               ref uint pdwProtocol,

      public UInt32 dwProtocol;

If you use a struct rather than a class for SCARD_IO_REQUEST, don't forget to add "ref" to the pioRecvPci parameter in the signature. Alternatively, if you don't care about the returned protocol control information, change the pioRecvPci parameter to an "IntPtr" and pass "IntPtr.Zero" in as this parameter

        request.dwProtocol = 1; //SCARD_PROTOCOL_T1);

        internal PROTOCOL_INT ai_protocol;

                   ai_protocol = PROTOCOL_INT.IPPROTO_IP

PROTOCOL_INT

const UInt32 PST_LAT        = 0x00000101; // LAT protocol

const UInt32 PST_TCPIP_TELNET   = 0x00000102; // TCP/IP Telnet protocol

        public KERB_PROTOCOL_MESSAGE_TYPE MessageType;

        public KERB_PROTOCOL_MESSAGE_TYPE MessageType;

public enum ForwardProtocol

    public ForwardProtocol dwForwardProto;

Public Enum ForwardProtocol

    Public dwForwardProto As ForwardProtocol

    public int dwProtocol;