function    GetSockName(var saddr : TSockAddrIn; var saddrlen : Integer) : integer; virtual;
    procedure   SetLingerOption;
    procedure   Dup(NewHSocket : TSocket); virtual;
    procedure   Shutdown(How : Integer); virtual;
    procedure   Pause; virtual;
    procedure   Resume; virtual;
    procedure   PutDataInSendBuffer(Data : Pointer; Len : Integer);
    procedure   PutStringInSendBuffer(Str : String);
    procedure   DeleteBufferedData;
    procedure   MessagePump; virtual;
{$IFNDEF VER80}
    procedure   MessageLoop;
    function    ProcessMessage : Boolean;
    procedure   ProcessMessages;
{$ENDIF}
{$IFDEF NOFORMS}
    property    Terminated         : Boolean        read  FTerminated
                                                    write FTerminated;
    property    OnMessagePump      : TNotifyEvent   read  FOnMessagePump
                                                    write FOnMessagePump;
{$ENDIF}
  protected
    property PortNum : Integer                      read  FPortNum;
    property Handle : HWND                          read  FWindowHandle;
    property HSocket : TSocket                      read  FHSocket
                                                    write Dup;

    property Addr : string                          read  GetAddr
                                                    write SetAddr;
    property Port : string                          read  GetRemotePort
                                                    write SetRemotePort;
    property LocalPort : string                     read  FLocalPortStr
                                                    write SetLocalPort;
    property Proto : String                         read  GetProto
                                                    write SetProto;
    property MultiThreaded   : Boolean              read  FMultiThreaded
                                                    write FMultiThreaded;
    property PeerAddr : String                      read  GetPeerAddr;
    property PeerPort : String                      read  GetPeerPort;
    property DnsResult : String                     read  FDnsResult;
    property DnsResultList : TStrings               read  FDnsResultList;
    property State : TSocketState                   read  FState;
    property AllSent   : Boolean                    read  bAllSent;
    property ReadCount : LongInt                    read  FReadCount;
    property RcvdCount : LongInt                    read  GetRcvdCount;
    property LastError : Integer                    read  FLastError;
    property BufSize   : Integer                    read  FBufSize
                                                    write FBufSize;
    property OnDataAvailable : TDataAvailable       read  FOnDataAvailable
                                                    write FOnDataAvailable;
    property OnDataSent : TDataSent                 read  FOnDataSent
                                                    write FOnDataSent;
    property OnSessionClosed : TSessionClosed       read  FOnSessionClosed
                                                    write FOnSessionClosed;
    property OnSessionAvailable : TSessionAvailable read  FOnSessionAvailable
                                                    write FOnSessionAvailable;
    property OnSessionConnected : TSessionConnected read  FOnSessionConnected
                                                    write FOnSessionConnected;
    property OnChangeState      : TChangeState      read  FOnChangeState
                                                    write FOnChangeState;
    property OnLineTooLong      : TNotifyEvent      read  FOnLineTooLong
                                                    write FOnLineTooLong;
    property OnDnsLookupDone    : TDnsLookupDone    read  FOnDnsLookupDone
                                                    write FOnDnsLookupDone;
    property OnError            : TNotifyEvent      read  FOnError
                                                    write FOnError;
    property OnBgException      : TBgExceptionEvent read  FOnBgException
                                                    write FOnBgException;

    property FlushTimeout : Integer                 read  FFlushTimeOut
                                                    write FFlushTimeout;
    property SendFlags : TSocketSendFlags           read  GetSendFlags
                                                    write SetSendFlags;
    property Text: String                           read  ReceiveStr
                                                    write SendText;
    property LingerOnOff   : TSocketLingerOnOff     read  FLingerOnOff
                                                    write FLingerOnOff;
    property LingerTimeout : Integer                read  FLingerTimeout
                                                    write FLingerTimeout;
{$IFDEF VER80}
    property TrumpetCompability : Boolean           read  FTrumpetCompability
                                                    write FTrumpetCompability;
{$ENDIF}
    property OnDisplay : TDebugDisplay              read  FOnDisplay
                                                    write FOnDisplay;
  end;

  TSocksState          = (socksData, socksNegociateMethods, socksAuthenticate, socksConnect);
  TSocksAuthentication = (socksNoAuthentication, socksAuthenticateUsercode);
  TSocksAuthState      = (socksAuthStart, socksAuthSuccess, socksAuthFailure, socksAuthNotRequired);
  TSocksAuthStateEvent = procedure(Sender : TObject; AuthState : TSocksAuthState) of object;
  TSocksErrorEvent     = procedure(Sender : TObject; Error : Integer; Msg : String) of Object;

  TCustomSocksWSocket = class(TCustomWSocket)
  protected
      FSocksState          : TSocksState;
      FSocksServer         : String;
      FSocksLevel          : String;
      FSocksPort           : String;
      FSocksPortAssigned   : Boolean;
      FSocksServerAssigned : Boolean;
      FSocksUsercode       : String;
      FSocksPassword       : String;
      FSocksAuthentication : TSocksAuthentication;
      FSocksAuthNumber     : char;
      FBoundAddr           : String;
      FBoundPort           : String;
      FRcvBuf              : array [0..127] of char;
      FRcvCnt              : Integer;
      FRcvdCnt             : Integer;
      FRcvdPtr             : PChar;
      FOnSocksError        : TSocksErrorEvent;
      FOnSocksConnected    : TSessionConnected;
      FOnSocksAuthState    : TSocksAuthStateEvent;
      procedure   AssignDefaultValue; override;
      procedure   TriggerSessionConnected(Error : Word); override;
      procedure   TriggerSocksConnected(Error : Word); virtual;
      procedure   TriggerSessionClosed(Error : Word); override;
      function    TriggerDataAvailable(Error : Word) : Boolean; override;
      procedure   SetSocksPort(sPort : String); virtual;
      procedure   SetSocksServer(sServer : String); virtual;
      procedure   TriggerSocksError(Error : Integer; Msg : String); virtual;
      procedure   TriggerSocksAuthState(AuthState : TSocksAuthState);
      function    GetRcvdCount : LongInt; override;
      procedure   SetSocksLevel(newValue : String);
      function    DoRecv(var Buffer;
                         BufferSize : Integer;
                         Flags      : Integer) : Integer; override;
      procedure   SocksDoConnect;
      procedure   SocksDoAuthenticate;
      procedure   DataAvailableError(ErrCode : Integer; Msg : String);
  public
      procedure   Connect; override;
      procedure   Listen; override;
  protected
      property SocksServer   : String               read  FSocksServer
                                                    write SetSocksServer;
      property SocksLevel    : String               read  FSocksLevel
                                                    write SetSocksLevel;
      property SocksPort     : String               read  FSocksPort
                                                    write SetSocksPort;
      property SocksUsercode : String               read  FSocksUsercode
                                                    write FSocksUsercode;
      property SocksPassword : String               read  FSocksPassword
                                                    write FSocksPassword;
      property SocksAuthentication : TSocksAuthentication
                                                    read  FSocksAuthentication
                                                    write FSocksAuthentication;
      property OnSocksError  : TSocksErrorEvent     read  FOnSocksError
                                                    write FOnSocksError;
      property OnSocksConnected : TSessionConnected read  FOnSocksConnected
                                                    write FOnSocksConnected;
      property OnSocksAuthState : TSocksAuthStateEvent
                                                    read  FOnSocksAuthState
                                                    write FOnSocksAuthState;
  end;

    TCustomLineWSocket = class (TCustomSocksWSocket)
    protected
        FRcvdPtr             : PChar;
        FRcvBufSize          : Integer;
        FRcvdCnt             : Integer;
        FLineEnd             : String;
        FLineMode            : Boolean;
        FLineLength          : Integer;    { When a line is available }
        FLineReceivedFlag    : Boolean;
        FLineEcho            : Boolean;    { Echo received data    }
        FLineEdit            : Boolean;    { Edit received data    }
        FTimeout             : LongInt;    { Given in milliseconds }
        FTimeStop            : LongInt;    { Milliseconds          }
        procedure   WndProc(var MsgRec: TMessage); override;
        procedure   WMTriggerDataAvailable(var msg: TMessage); message WM_TRIGGER_DATA_AVAILABLE;
        function    TriggerDataAvailable(Error : Word) : Boolean; override;
        procedure   TriggerSessionClosed(Error : Word); override;
        procedure   SetLineMode(newValue : Boolean); virtual;
        procedure   EditLine(var Len : Integer); virtual;
        function    GetRcvdCount : LongInt; override;
        function    DoRecv(var Buffer;
                           BufferSize : Integer;
                           Flags      : Integer) : Integer; override;
    public
        constructor Create(AOwner: TComponent); override;
        destructor  Destroy; override;
        property    LineLength : Integer     read  FLineLength;
    published
        property LineMode : Boolean          read  FLineMode
                                             write SetLineMode;
        property LineEnd  : String           read  FLineEnd
                                             write FLineEnd;
        property LineEcho : Boolean          read  FLineEcho
                                             write FLineEcho;
        property LineEdit : Boolean          read  FLineEdit
                                             write FLineEdit;
    end;

    TCustomSyncWSocket = class(TCustomLineWSocket)
    protected
        FLinePointer : ^String;
        function    Synchronize(Proc : TWSocketSyncNextProc; var DoneFlag : Boolean) : Integer; virtual;
        function    WaitUntilReady(var DoneFlag : Boolean) : Integer; virtual;
        procedure   InternalDataAvailable(Sender: TObject; Error: Word);
    public
        procedure   ReadLine(Timeout : integer; var Buffer : String);
    end;

  TWSocket = class(TCustomSyncWSocket)
  public
    property PortNum;
    property Handle;
    property HSocket;
    property BufSize;
    property Text;
    property AllSent;
  {$IFDEF VER80}
    property TrumpetCompability;
  {$ENDIF}
    property OnDisplay;
  published
    property Addr;
    property Port;
    property Proto;
    property LocalPort;
    property PeerPort;
    property PeerAddr;
    property DnsResult;
    property DnsResultList;
    property State;
    property ReadCount;
    property RcvdCount;
    property LastError;
    property MultiThreaded;
    property OnDataAvailable;
    property OnDataSent;
    property OnSessionClosed;
    property OnSessionAvailable;
    property OnSessionConnected;
    property OnSocksConnected;
    property OnChangeState;
    property OnLineTooLong;
    property OnDnsLookupDone;
    property OnError;
    property OnBgException;
    property FlushTimeout;
    property SendFlags;
    property LingerOnOff;
    property LingerTimeout;
    property SocksLevel;
    property SocksServer;
    property SocksPort;
    property SocksUsercode;
    property SocksPassword;
    property SocksAuthentication;
    property OnSocksError;
    property OnSocksAuthState;
  end;

  TSocksWSocket = class(TWSocket)
  end;

procedure Register;

function  WinsockInfo : TWSADATA;
function  WSocketErrorDesc(error: integer) : string;