<HTML> <!-- ex01.html,v 1.2 2000/06/04 22:02:08 brunsch Exp --> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="Ambreen Ilyas"> <META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (X11; I; SunOS 5.5.1 sun4u) [Netscape]"> <TITLE>Example 1</TITLE> </HEAD> <BODY> <FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <BR><FONT COLOR="#CC0000">//// This example is from the ACE Programmers Guide.</FONT> <BR><FONT COLOR="#CC0000">//// Chapter: "The Acceptor/Connector" (Connection Initialization)</FONT> <BR><FONT COLOR="#CC0000">//// For details please see the guide at</FONT> <BR><FONT COLOR="#CC0000">//// http://www.cs.wustl.edu/~schmidt/ACE.html</FONT> <BR><FONT COLOR="#CC0000">//// AUTHOR: Umar Syyid (usyyid@hns.com)</FONT> <BR><FONT COLOR="#CC0000">//// and Ambreen Ilyas (ambreen@bitsmart.com)</FONT> <BR><FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <P><FONT COLOR="#FF0000">//Example 1</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Reactor.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT><FONT COLOR="#006600"> "ace/Svc_Handler.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Acceptor.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT><FONT COLOR="#006600"> "ace/Synch.h"</FONT> <BR><FONT COLOR="#000099">#include </FONT><FONT COLOR="#006600">"ace/SOCK_Acceptor.h"</FONT> <P><FONT COLOR="#FF0000">//Create a Service Handler whose open() method will be called back automatically.</FONT> <BR><FONT COLOR="#FF0000">//This class MUST derive from ACE_Svc_Handler which is an interface and</FONT> <BR><FONT COLOR="#FF0000">//as can be seen is a template container class itself. The first parameter to //ACE_Svc_Handler is the underlying stream that it may use for communication.</FONT> <BR><FONT COLOR="#FF0000">//Since we are using TCP sockets the stream is ACE_SOCK_STREAM.</FONT> <BR><FONT COLOR="#FF0000">//The second is the internal synchronization mechanism it could use.</FONT> <BR><FONT COLOR="#FF0000">//Since we have a single threaded application we pass it a "null" lock</FONT> <BR><FONT COLOR="#FF0000">//which will do nothing.</FONT> <P>class My_Svc_Handler: <BR> public ACE_Svc_Handler <ACE_SOCK_STREAM,ACE_NULL_SYNCH>{ <BR><FONT COLOR="#FF0000">//the open method which will be called back automatically after the</FONT> <BR><FONT COLOR="#FF0000">//connection has been established</FONT>. <P>public: <BR>int open(void*){ <BR> cout<<?Connection established?<<endl; <BR> } <BR>}; <BR><FONT COLOR="#FF0000">// Create the acceptor as described above.</FONT> <BR>typedef ACE_Acceptor<My_Svc_Handler,ACE_SOCK_ACCEPTOR> MyAcceptor; <P>int main(int argc, char* argv[]){ <BR><FONT COLOR="#FF0000">//create the address on which we wish to connect. The constructor takes</FONT> <BR><FONT COLOR="#FF0000">//the port number on which to listen and will automatically take the hosts</FONT> <BR><FONT COLOR="#FF0000">//IP address as the IP Address for the addr object</FONT> <P>ACE_INET_Addr addr(PORT_NUM); <P><FONT COLOR="#FF0000">//instantiate the appropriate acceptor object with the address on which we wish to</FONT> <BR><FONT COLOR="#FF0000">//accept and the Reactor instance we want to use. In this case we just use the global</FONT> <BR><FONT COLOR="#FF0000">//ACE_Reactor singleton. (Read more about the reactor in the previous chapter)</FONT> <BR>MyAcceptor acceptor(address, ACE_Reactor::instance()); <P>while(1) <BR><FONT COLOR="#FF0000"> // Start the reactors event loop</FONT> <BR> ACE_Reactor::instance()->handle_events(); <BR>} <P> <A HREF="ex02.html">Next Example</A> <BR> </BODY> </HTML>