与date有关的网络编程，C++编程，http编程-http_date.h　Routines for parsing and generating http dates

* Created: Christoper Blizzard <blizzard@appliedtheory.com>, 16-Aug-1998

*

* Copyright (C) 1998 Free Software Foundation

*

* This library is free software　you can redistribute it and/or

* modify it under the terms of the GNU Library General Public

* License as published by the Free Software Foundation　either

* version 2 of the License, or (at your option) any later version.

*

* This library is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY　without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.　See the GNU

* Library General Public License for more details.

*

* You should have received a copy of the GNU Library General Public

* License along with this library　if not, write to the Free

* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.