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HttpServer.d

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00001 /*******************************************************************************
00002 
00003         @file HttpServer.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, April 2004      
00031         @author         Kris
00032 
00033 
00034 *******************************************************************************/
00035 
00036 module mango.http.server.HttpServer;
00037 
00038 private import  mango.io.Exception,
00039                 mango.io.ServerSocket;
00040 
00041 private import  mango.io.model.IConduit;
00042 
00043 private import  mango.log.model.ILogger;
00044 
00045 private import  mango.utils.ServerThread,
00046                 mango.utils.AbstractServer;
00047 
00048 private import  mango.http.server.HttpThread,
00049                 mango.http.server.HttpBridge;
00050 
00051 public  import  mango.http.server.model.IProvider;
00052 
00053 private import  mango.http.server.model.IProviderBridge;              
00054 
00055 /******************************************************************************
00056         
00057         Extends the AbstractServer to glue all the Http support together.
00058         One should subclass this to provide a secure (https) server.
00059 
00060 ******************************************************************************/
00061 
00062 class HttpServer : AbstractServer
00063 {
00064         private IProvider provider;
00065 
00066         /**********************************************************************
00067 
00068                 Construct this server with the requisite attribites. The
00069                 IProvider represents a service handler, the binding addr
00070                 is the local address we'll be listening on, and 'threads'
00071                 represents the number of thread to initiate.
00072 
00073         **********************************************************************/
00074 
00075         this (IProvider provider, InternetAddress bind, int threads, ILogger logger = null)
00076         {
00077                 this (provider, bind, threads, 10, logger);
00078         }
00079 
00080         /**********************************************************************
00081 
00082                 Construct this server with the requisite attribites. The
00083                 IProvider represents a service handler, the binding addr
00084                 is the local address we'll be listening on, and 'threads'
00085                 represents the number of thread to initiate. Backlog is
00086                 the number of "simultaneous" connection requests that a
00087                 socket layer will buffer on our behalf.
00088 
00089         **********************************************************************/
00090 
00091         this (IProvider provider, InternetAddress bind, int threads, int backlog, ILogger logger = null)
00092         {
00093                 super (bind, threads, backlog, logger);
00094                 this.provider = provider;
00095         }
00096 
00097         /**********************************************************************
00098 
00099                 Return the protocol in use.
00100 
00101         **********************************************************************/
00102 
00103         char[] getProtocol()
00104         {
00105                 return "http";
00106         }
00107 
00108         /**********************************************************************
00109 
00110                 Return a text string identifying this server
00111 
00112         **********************************************************************/
00113 
00114         override char[] toString()
00115         {
00116                 return getProtocol()~"::"~provider.toString();
00117         }
00118 
00119         /**********************************************************************
00120 
00121                 Create a ServerSocket instance. Secure implementations
00122                 would provide a SecureSocketServer, or something along
00123                 those lines.
00124 
00125         **********************************************************************/
00126 
00127         override ServerSocket createSocket (InternetAddress bind, int backlog)
00128         {
00129                 return new ServerSocket (bind, backlog);
00130         }
00131 
00132         /**********************************************************************
00133 
00134                 Create a ServerThread instance. This can be overridden to 
00135                 create other thread-types, perhaps with additional thread-
00136                 level data attached.
00137 
00138         **********************************************************************/
00139 
00140         override ServerThread createThread (ServerSocket socket)
00141         {
00142                 return new HttpThread (this, socket);
00143         }
00144 
00145         /**********************************************************************
00146 
00147                 Factory method for servicing a request. We just toss the
00148                 request across our bridge, for the IProvider to handle.
00149 
00150         **********************************************************************/
00151 
00152         override void service (ServerThread st, IConduit conduit)
00153         {
00154                 HttpThread      thread;
00155                 IProviderBridge bridge;
00156 
00157                 // we know what this is because we created it (above)
00158                 thread = cast(HttpThread) st;
00159 
00160                 // extract thread-local HttpBridge
00161                 if ((bridge = thread.getBridge()) is null)
00162                    {
00163                    // create a new instance if it's the first service 
00164                    // request on this particular thread
00165                    bridge = new HttpBridge (this, provider, thread);
00166                    thread.setBridge (bridge);
00167                    }
00168 
00169                 // process request
00170                 bridge.cross (conduit);
00171         }
00172 }
00173 

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