<!-- page06.html,v 1.17 2003/08/19 15:08:26 schmidt Exp --> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="James CE Johnson"> <TITLE>ACE Tutorial 015</TITLE> </HEAD> <BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> <CENTER><B><FONT SIZE=+2>ACE Tutorial 015</FONT></B></CENTER> <CENTER><B><FONT SIZE=+2>Building a protocol stream</FONT></B></CENTER> <P> <HR WIDTH="100%"> The Server object exists in order simplify the main() application level. To that end, it hides the details of creating an acceptor and managing the reactor. <P> The static close() method available for a signal handler as you saw on the previous page. Of course the assumption here is that there would only be one Server instance but since you can't provide a TCP/IP port, that's probably a valid assumption! <HR> <PRE> <font color=red>// page06.html,v 1.17 2003/08/19 15:08:26 schmidt Exp</font> <font color=blue>#ifndef</font> <font color=purple>SERVER_H</font> <font color=blue>#define</font> <font color=purple>SERVER_H</font> <font color=blue>#include</font> "<A HREF="../../../ace/Acceptor.h">ace/Acceptor.h</A>" <font color=blue>#if !defined</font> (<font color=purple>ACE_LACKS_PRAGMA_ONCE</font>) <font color=blue># pragma</font> <font color=purple>once</font> <font color=blue>#endif</font> <font color=red>/* ACE_LACKS_PRAGMA_ONCE */</font> <font color=blue>#include</font> "<A HREF="../../../ace/SOCK_Acceptor.h">ace/SOCK_Acceptor.h</A>" <font color=blue>#include</font> "<font color=green>Handler.h</font>" <font color=red>/* Anytime I have templates I try to remember to create a typedef for the parameterized object. It makes for much less typing later! */</font> typedef ACE_Acceptor <Handler, ACE_SOCK_ACCEPTOR> Acceptor; class Server { public: <font color=red>// Our simple constructor takes no parameters. To make the</font> <font color=red>// server a bit more useful, you may want to pass in the</font> <font color=red>// TCP/IP port to be used by the acceptor.</font> Server (void); ~Server (void); <font color=red>// Open the server for business</font> int open (void); <font color=red>// Close all server instances by setting the finished_ flag.</font> <font color=red>// Actually, the way this class is written, you can only have</font> <font color=red>// one instance.</font> static int close (void); <font color=red>// Run the server's main loop. The use of the gloabl ACE_Reactor by</font> <font color=red>// this method is what limits us to one Server instance.</font> int run (void); private: <font color=red>// This will accept client connection requests and instantiate a</font> <font color=red>// Handler object for each new connection.</font> Acceptor acceptor_; <font color=red>// Our shutdown flag</font> static sig_atomic_t finished_; }; <font color=blue>#endif</font> <font color=red>/* SERVER_H */</font> </PRE> <P><HR WIDTH="100%"> <CENTER>[<A HREF="../online-tutorials.html">Tutorial Index</A>] [<A HREF="page07.html">Continue This Tutorial</A>]</CENTER>