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ServerSocket.d

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00001 /*******************************************************************************
00002 
00003         @file ServerSocket.d
00004         
00005         Copyright (C) 2004 Kris Bell
00006         
00007         This software is provided 'as-is', without any express or implied
00008         warranty. In no event will the authors be held liable for damages
00009         of any kind arising from the use of this software.
00010         
00011         Permission is hereby granted to anyone to use this software for any 
00012         purpose, including commercial applications, and to alter it and/or 
00013         redistribute it freely, subject to the following restrictions:
00014         
00015         1. The origin of this software must not be misrepresented; you must 
00016            not claim that you wrote the original software. If you use this 
00017            software in a product, an acknowledgment within documentation of 
00018            said product would be appreciated but is not required.
00019 
00020         2. Altered source versions must be plainly marked as such, and must 
00021            not be misrepresented as being the original software.
00022 
00023         3. This notice may not be removed or altered from any distribution
00024            of the source.
00025 
00026 
00027                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00028 
00029 
00030         @version        Initial version, March 2004      
00031         @author         Kris
00032 
00033 
00034 *******************************************************************************/
00035 
00036 module mango.io.ServerSocket;
00037 
00038 public  import  mango.io.Socket;
00039 
00040 private import  mango.io.Exception,
00041                 mango.io.SocketConduit;
00042 
00043 private import  mango.io.model.IBuffer,
00044                 mango.io.model.IConduit;
00045 
00046 /*******************************************************************************
00047 
00048         ServerSocket is a wrapper upon the basic socket functionality to
00049         simplify the API somewhat. You use a ServerSocket to listen for 
00050         inbound connection requests, and get back a SocketConduit when a
00051         connection is made.
00052 
00053 *******************************************************************************/
00054 
00055 class ServerSocket : Socket
00056 {
00057         private int linger = -1;
00058 
00059         /***********************************************************************
00060         
00061                 Construct a ServerSocket on the given address, with the
00062                 specified number of backlog connections supported. The
00063                 socket is bound to the given address, and set to listen
00064                 for incoming connections. Note that the socket address 
00065                 can be setup for reuse, so that a halted server may be 
00066                 restarted immediately.
00067 
00068         ***********************************************************************/
00069 
00070         this (InternetAddress addr, int backlog, bool socketReuse = false)
00071         {
00072                 super (Socket.AddressFamily.INET, Socket.Type.STREAM, Socket.Protocol.IP);
00073                 setAddressReuse (socketReuse);
00074                 bind (addr);
00075                 listen (backlog);
00076         }
00077 
00078         /***********************************************************************
00079         
00080                 Set the period in which dead sockets are left lying around
00081                 by the O/S
00082 
00083         ***********************************************************************/
00084 
00085         override void setLingerPeriod (int period)
00086         {
00087                 linger = period;
00088         }
00089 
00090         /***********************************************************************
00091         
00092                 Wait for a client to connect to us, and return a connected
00093                 SocketConduit.
00094 
00095         ***********************************************************************/
00096 
00097         override SocketConduit accept ()
00098         {
00099                 return cast(SocketConduit) super.accept ();
00100         }
00101 
00102         /***********************************************************************
00103         
00104                 Overrides the default socket behaviour to create a socket
00105                 for an incoming connection. Here we provide a SocketConduit
00106                 instead.
00107 
00108         ***********************************************************************/
00109 
00110         protected override Socket createSocket (socket_t handle)
00111         {
00112                 Socket socket = SocketConduit.create (handle);
00113 
00114                 // force abortive closure to avoid prolonged OS scavenging?
00115                 if (linger >= 0)
00116                     socket.setLingerPeriod (linger);
00117 
00118                 return socket;
00119         }
00120 }
00121 
00122 

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