Add new file.

  CHANGES.
  README.

Add new code
  error_code.h error operation code class.

diff --git a/CHANGES b/CHANGES
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+[Xxx.xx 2009] 3.0.0 Norihisa Nakai
+  - MultiThread version First Release.
+
+[Apr.20 2009] 2.1.2-1 Shinya TAKEBAYASHI
+  - Removed cookie modules
+
+[Mar. 9 2009] 2.1.2-0 Shinya TAKEBAYASHI
+  - Added protocol modules(recently supported):
+    * cpassive(Cookie passive)
+    * crewrite(Cookie rewrite)
+    * ip(Source IP)
+    * pfilter(Packet filter)
+  - Implemented replication spec to sslid module.
+
+[Jan. 27 2009] 2.1.1-0 Shinya TAKEBAYASHI
+  - Added option for FAST SCHEDULE to sessionless module.
+    Establishing connection when clinent connection was established.
+  - Updated l7directord man file.
+  - Changed methods for sslid module.(liner list -> hash list)
+
+[Dec. 17 2008] 2.1.0-0 Shinya TAKEBAYASHI
+  - Implemented access logger (CLIENT - DESTINATION mapping).
+  - Optimized event listener.
+  - Fixed algorithms for some check type.
+  - "Checkcount" has been enabled.
+  - Created "man" page.(Japanese(UTF-8) only ;))
+  - Implemented flow control logic(server).
+  - Eliminated flow control logic(client).
+
+[May. 26 2008] 2.0.0-0 Shinya TAKEBAYASHI
+  - Changed logger library(vanessa_logger -> log4cxx)
+  - Implemented configuration function(using configuration file: /etc/l7vs/l7vs.cf)
+  - Implemented replication system(for HA clustering)
+  - Added new protocol module(sessionless - Layer-4 LB like module)
+
+[Dec. 11 2007] 1.0.0-1 Shinya TAKEBAYASHI
+  - Implemented blocking mode switching function
+
+[Oct. 11 2007] 1.0.0-0 Shinya TAKEBAYASHI
+  - Change liblary from GLib1.2 to GLib2.0 (memory leak fix)
+  - Change from select() to epoll ET.
+  - Change bloking mode to non-blocking mode(recv() and send()).
+  - Change from service conn list to service conn hash.
+  - Change from iomux-list to hash-map and available list.
+  - Add QoS Control.
+  - Add Weighted Round-Robin scheduler.
+  - Add real server weight.
+  - Fixed some bugs.
+
+    * Following members helped us. Thanks!
+
+      Hideaki KONDO
+      Shunji FUKUSHIMA
+      Norihisa NAKAI
+      Hajime OKADA
+      Akira TAKAMARU
+      Hiroyuki BAN
+      Toru MORISHITA
+      Kouhei TANUMA
+      Tetsuya TAKATSURU
+      Masahiro SAKAMOTO
+      Yumi KITANI
+
+[May. 9 2007] 0.6.0-0 Shinya TAKEBAYASHI
+  - Extended maximum client connections.
+  - Fixed some bugs.
+
+[Feb. 19, 2007] 0.5.0-3 Shinya TAKEBAYASHI
+  - Fixed syntax errors.(umagent/umagent.c, umagent/Makefile)
+
+[Dec. 26, 2006] 0.5.0-2 Takahiro Kurosawa / Hideaki Kondo
+  - Rewrote to fix bug about Segmentation Fault.(conn.c)
+

diff --git a/README b/README
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+About UltraMonkey-L7\r
+---------------------------------------------------------------------------\r
+\r
+Welcome\r
+=======\r
+    UltraMonkey-L7 is a opensource layer-7 load balancing software.\r
+    \r
+\r
+System requirements\r
+===================\r
+\r
+           OS : Linux 2.6.9(or later)on x86 and x86_64 architecture\r
+                We recommend to use Redhat Enterprise Linux.\r
+\r
+          CPU : Intel x86 and x86_64 or compatible architecture processors\r
+\r
+       Memory : 2 GB(recommended)\r
+\r
+    Libraries : gcc4(or higher), glib2.x, apache log4cxx(0.10 or higher), boost C++ libraries( 1.38 or higher )\r
+    \r
+\r
+License\r
+=======\r
+\r
+    UltraMonkey-L7 is distributed using LGPL License.\r
+\r
+\r
+About UltraMonkey-L7 Project\r
+============================\r
+\r
+    To get more information about UltraMonkey-L7, please visit our project\r
+    Web Site.\r
+\r
+         Project Web Site - http://ultramonkey-l7.sourceforge.jp/\r
+      Software repository - http://sourceforge.jp/projects/ultramonkey-l7/\r

diff --git a/include/error_code.h b/include/error_code.h
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+++ b/include/error_code.h
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+#ifndef        ERROR_CODE_H
+#define        ERROR_CODE_H
+//
+// (C) Copyright 2009- Norihisa Nakai
+// Distributed under the Boost Software License, Version 1.0
+// (See accompanying file LICENSE_1_0.txt http://www.boost.org/LICENSE_1_0.txt)
+
+#include <string>
+
+namespace ultramonkey{
+
+//! @class     error_code
+//!    @brief  getValue error
+//! @brief     this class is POD
+class  error_code{
+protected:
+       bool            flag;   //!<    errorcode flag
+       std::string     msg;    //!<    errorcode message
+public:
+       error_code() : flag(false){}    //!< constractor
+       //! setter constractor
+       //! @param[in]  flags
+       //! @param[in]  error message
+       error_code( const bool inflg, const std::string& instr ) : flag( inflag ), msg( instr ){}
+       bool    operator==( const bool in ) const { return ( flag == in ); } //!< operator== orverload
+       bool    operator!=( const bool in ) const { return ( flag != in ); } //!< operator!= orverload
+       bool    operator!() const { return !flag; } //!< operator! orverload
+       typedef void (*unspecified_bool_type)();        //!< if return function
+       static void unspecified_bool_true() {}          //!< if true orverload function
+       operator unspecified_bool_type() const { return flag == 0 ? 0 : unspecified_bool_true; } //!< if() orverload
+       const std::string&      get_message() const { return msg; }             //!< message getter
+       //! error setter
+       //! @param[in]  flags
+       //! @param[in]  error message
+       void    setter( const bool flg, const std::string& instr ){
+               flag = flg;
+               msg = instr;
+       }
+};
+
+}      // ultramonkey
+
+#endif // ERROR_CODE_H