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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         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, April 2004      
00034         @author         Kris
00035 
00036 
00037 *******************************************************************************/
00038 
00039 module mango.http.server.HttpServer;
00040 
00041 private import  mango.io.Exception,
00042                 mango.io.ServerSocket;
00043 
00044 private import  mango.io.model.IConduit;
00045 
00046 private import  mango.log.model.ILogger;
00047 
00048 private import  mango.utils.ServerThread,
00049                 mango.utils.AbstractServer;
00050 
00051 private import  mango.http.server.HttpThread,
00052                 mango.http.server.HttpBridge;
00053 
00054 public  import  mango.http.server.model.IProvider;
00055 
00056 private import  mango.http.server.model.IProviderBridge;              
00057 
00058 /******************************************************************************
00059         
00060         Extends the AbstractServer to glue all the Http support together.
00061         One should subclass this to provide a secure (https) server.
00062 
00063 ******************************************************************************/
00064 
00065 class HttpServer : AbstractServer
00066 {
00067         private IProvider provider;
00068 
00069         /**********************************************************************
00070 
00071                 Construct this server with the requisite attribites. The
00072                 IProvider represents a service handler, the binding addr
00073                 is the local address we'll be listening on, and 'threads'
00074                 represents the number of thread to initiate.
00075 
00076         **********************************************************************/
00077 
00078         this (IProvider provider, InternetAddress bind, int threads, ILogger logger = null)
00079         {
00080                 this (provider, bind, threads, 10, logger);
00081         }
00082 
00083         /**********************************************************************
00084 
00085                 Construct this server with the requisite attribites. The
00086                 IProvider represents a service handler, the binding addr
00087                 is the local address we'll be listening on, and 'threads'
00088                 represents the number of thread to initiate. Backlog is
00089                 the number of "simultaneous" connection requests that a
00090                 socket layer will buffer on our behalf.
00091 
00092         **********************************************************************/
00093 
00094         this (IProvider provider, InternetAddress bind, int threads, int backlog, ILogger logger = null)
00095         {
00096                 super (bind, threads, backlog, logger);
00097                 this.provider = provider;
00098         }
00099 
00100         /**********************************************************************
00101 
00102                 Return the protocol in use.
00103 
00104         **********************************************************************/
00105 
00106         char[] getProtocol()
00107         {
00108                 return "http";
00109         }
00110 
00111         /**********************************************************************
00112 
00113                 Return a text string identifying this server
00114 
00115         **********************************************************************/
00116 
00117         override char[] toString()
00118         {
00119                 return getProtocol()~"::"~provider.toString();
00120         }
00121 
00122         /**********************************************************************
00123 
00124                 Create a ServerSocket instance. Secure implementations
00125                 would provide a SecureSocketServer, or something along
00126                 those lines.
00127 
00128         **********************************************************************/
00129 
00130         override ServerSocket createSocket (InternetAddress bind, int backlog)
00131         {
00132                 return new ServerSocket (bind, backlog);
00133         }
00134 
00135         /**********************************************************************
00136 
00137                 Create a ServerThread instance. This can be overridden to 
00138                 create other thread-types, perhaps with additional thread-
00139                 level data attached.
00140 
00141         **********************************************************************/
00142 
00143         override ServerThread createThread (ServerSocket socket)
00144         {
00145                 return new HttpThread (this, socket);
00146         }
00147 
00148         /**********************************************************************
00149 
00150                 Factory method for servicing a request. We just toss the
00151                 request across our bridge, for the IProvider to handle.
00152 
00153         **********************************************************************/
00154 
00155         override void service (ServerThread st, IConduit conduit)
00156         {
00157                 HttpThread      thread;
00158                 IProviderBridge bridge;
00159 
00160                 // we know what this is because we created it (above)
00161                 thread = cast(HttpThread) st;
00162 
00163                 // extract thread-local HttpBridge
00164                 if ((bridge = thread.getBridge()) is null)
00165                    {
00166                    // create a new instance if it's the first service 
00167                    // request on this particular thread
00168                    bridge = new HttpBridge (this, provider, thread);
00169                    thread.setBridge (bridge);
00170                    }
00171 
00172                 // process request
00173                 bridge.cross (conduit);
00174         }
00175 }
00176 

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