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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         4. Derivative works are permitted, but they must carry this notice
00027            in full and credit the original source.
00028 
00029 
00030                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00031 
00032 
00033         @version        Initial version, March 2004      
00034         @author         Kris
00035 
00036 
00037 *******************************************************************************/
00038 
00039 module mango.io.ServerSocket;
00040 
00041 public  import  mango.io.Socket;
00042 
00043 private import  mango.io.Exception,
00044                 mango.io.SocketConduit;
00045 
00046 private import  mango.io.model.IBuffer,
00047                 mango.io.model.IConduit;
00048 
00049 /*******************************************************************************
00050 
00051         ServerSocket is a wrapper upon the basic socket functionality to
00052         simplify the API somewhat. You use a ServerSocket to listen for 
00053         inbound connection requests, and get back a SocketConduit when a
00054         connection is made.
00055 
00056 *******************************************************************************/
00057 
00058 class ServerSocket : Socket
00059 {
00060         private int linger = -1;
00061 
00062         /***********************************************************************
00063         
00064                 Construct a ServerSocket on the given address, with the
00065                 specified number of backlog connections supported. The
00066                 socket is bound to the given address, and set to listen
00067                 for incoming connections. Note that the socket address 
00068                 can be setup for reuse, so that a halted server may be 
00069                 restarted immediately.
00070 
00071         ***********************************************************************/
00072 
00073         this (InternetAddress addr, int backlog, bool socketReuse = false)
00074         {
00075                 super (Socket.AddressFamily.INET, Socket.Type.STREAM, Socket.Protocol.IP);
00076                 setAddressReuse (socketReuse);
00077                 bind (addr);
00078                 listen (backlog);
00079         }
00080 
00081         /***********************************************************************
00082         
00083                 Set the period in which dead sockets are left lying around
00084                 by the O/S
00085 
00086         ***********************************************************************/
00087 
00088         override void setLingerPeriod (int period)
00089         {
00090                 linger = period;
00091         }
00092 
00093         /***********************************************************************
00094         
00095                 Wait for a client to connect to us, and return a connected
00096                 SocketConduit.
00097 
00098         ***********************************************************************/
00099 
00100         override SocketConduit accept ()
00101         {
00102                 return cast(SocketConduit) super.accept ();
00103         }
00104 
00105         /***********************************************************************
00106         
00107                 Overrides the default socket behaviour to create a socket
00108                 for an incoming connection. Here we provide a SocketConduit
00109                 instead.
00110 
00111         ***********************************************************************/
00112 
00113         protected override Socket createSocket (socket_t handle)
00114         {
00115                 Socket socket = SocketConduit.create (handle);
00116 
00117                 // force abortive closure to avoid prolonged OS scavenging?
00118                 if (linger >= 0)
00119                     socket.setLingerPeriod (linger);
00120 
00121                 return socket;
00122         }
00123 }
00124 
00125 

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