class TServerSocket: public TSocket

 Create a server socket object for a named service. Set reuse to true
 to force reuse of the server socket (i.e. do not wait for the time
 out to pass). Using backlog one can set the desirable queue length
 for pending connections.
 Use tcpwindowsize to specify the size of the receive buffer, it has
 to be specified here to make sure the window scale option is set (for
 tcpwindowsize > 65KB and for platforms supporting window scaling).
 Use IsValid() to check the validity of the
 server socket. In case server socket is not valid use GetErrorCode()
 to obtain the specific error value. These values are:
  0 = no error (socket is valid)
 -1 = low level socket() call failed
 -2 = low level bind() call failed
 -3 = low level listen() call failed
 Every valid server socket is added to the TROOT sockets list which
 will make sure that any open sockets are properly closed on
 program termination.

 Create a server socket object on a specified port. Set reuse to true
 to force reuse of the server socket (i.e. do not wait for the time
 out to pass). Using backlog one can set the desirable queue length
 for pending connections. If port is 0 a port scan will be done to
 find a free port. This option is mutual exlusive with the reuse option.
 Use tcpwindowsize to specify the size of the receive buffer, it has
 to be specified here to make sure the window scale option is set (for
 tcpwindowsize > 65KB and for platforms supporting window scaling).
 Use IsValid() to check the validity of the
 server socket. In case server socket is not valid use GetErrorCode()
 to obtain the specific error value. These values are:
  0 = no error (socket is valid)
 -1 = low level socket() call failed
 -2 = low level bind() call failed
 -3 = low level listen() call failed
 Every valid server socket is added to the TROOT sockets list which
 will make sure that any open sockets are properly closed on
 program termination.

 Destructor: cleanup authentication stuff (if any) and close

 Accept a connection on a server socket. Returns a full-duplex
 communication TSocket object. If no pending connections are
 present on the queue and nonblocking mode has not been enabled
 with SetOption(kNoBlock,1) the call blocks until a connection is
 present. The returned socket must be deleted by the user. The socket
 is also added to the TROOT sockets list which will make sure that
 any open sockets are properly closed on program termination.
 In case of error 0 is returned and in case non-blocking I/O is
 enabled and no connections are available -1 is returned.

 The opt can be used to require client authentication; valid options are

    kSrvAuth   =   require client authentication
    kSrvNoAuth =   force no client authentication

 Example: use Opt = kSrvAuth to require client authentication.

 Default options are taken from fgAcceptOpt and are initially
 equivalent to kSrvNoAuth; they can be changed with the static
 method TServerSocket::SetAcceptOptions(Opt).
 The active defaults can be visualized using the static method
 TServerSocket::ShowAcceptOptions().

 Return internet address of host to which the server socket is bound,
 i.e. the local host. In case of error TInetAddress::IsValid() returns
 kFALSE.

 Get port # to which server socket is bound. In case of error returns -1.

 Return default options for Accept

 Set default options for Accept according to modifier 'mod'.
 Use:
   kSrvAuth                 require client authentication
   kSrvNoAuth               do not require client authentication

 Print default options for Accept.

 Check authentication request from the client on new
 open connection