00001 /******************************************************************************* 00002 00003 @file ServerThread.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.utils.ServerThread; 00040 00041 private import std.thread; 00042 00043 private import mango.io.Conduit, 00044 mango.io.Exception, 00045 mango.io.ServerSocket, 00046 mango.io.SocketConduit; 00047 00048 private import mango.utils.AbstractServer; 00049 00050 /****************************************************************************** 00051 00052 Subclasses Thread to provide the basic server-thread loop. This 00053 functionality could also be implemented as a delegate, however, 00054 we also wish to subclass in order to add thread-local data (see 00055 HttpThread). 00056 00057 ******************************************************************************/ 00058 00059 class ServerThread : Thread 00060 { 00061 ServerSocket socket; 00062 AbstractServer server; 00063 00064 /********************************************************************** 00065 00066 Construct a ServerThread for the given Server, upon the 00067 specified socket 00068 00069 **********************************************************************/ 00070 00071 this (AbstractServer server, ServerSocket socket) 00072 { 00073 this.server = server; 00074 this.socket = socket; 00075 } 00076 00077 /********************************************************************** 00078 00079 Execute this thread until the Server says to halt. Each 00080 thread waits in the socket.accept() state, waiting for 00081 a connection request to arrive. Upon selection, a thread 00082 dispatches the request via the request service-handler 00083 and, upon completion, enters the socket.accept() state 00084 once more. 00085 00086 **********************************************************************/ 00087 00088 override int run() 00089 { 00090 while (true) 00091 try { 00092 // should we bail out? 00093 if (Socket.isCancelled) 00094 return 0; 00095 00096 // wait for a socket connection 00097 SocketConduit sc = socket.accept (); 00098 00099 // did we get a valid response? 00100 if (sc) 00101 // yep: process this request 00102 server.service (this, sc); 00103 else 00104 // server may be halting ... 00105 if (! Socket.isCancelled) 00106 server.getLogger.error ("Socket accept() failed"); 00107 00108 } catch (IOException x) 00109 { 00110 server.getLogger.error ("IOException: "~x.toString); 00111 } 00112 catch (Object x) 00113 { 00114 server.getLogger.fatal ("Exception: "~x.toString); 00115 } 00116 } 00117 }