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<HTML>
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<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 2</TITLE>
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<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="#CC0000">//Example 2</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>
<BR><FONT COLOR="#000099">#define</FONT> <FONT COLOR="#663366">PORT_NUM
10101</FONT>
<BR><FONT COLOR="#000099">#define</FONT><FONT COLOR="#663366"> DATA_SIZE
12</FONT>
<P><FONT COLOR="#FF0000">//forward declaration</FONT>
<BR>class My_Svc_Handler;
<P><FONT COLOR="#FF0000">//Create the Acceptor class</FONT>
<BR>typedef ACE_Acceptor<My_Svc_Handler,ACE_SOCK_ACCEPTOR> MyAcceptor;
<P><FONT COLOR="#FF0000">//Create a service handler similar to as seen
in example 1.</FONT>
<BR><FONT COLOR="#FF0000">//Except this time include the handle_input()
method which will be</FONT>
<BR><FONT COLOR="#FF0000">//called back automatically by the reactor when
new data arrives</FONT>
<BR><FONT COLOR="#FF0000">//on the newly established connection</FONT>
<BR>class My_Svc_Handler:
<BR> public ACE_Svc_Handler <ACE_SOCK_STREAM,ACE_NULL_SYNCH>{
<BR>public:
<BR>My_Svc_Handler(){
<BR> data= new char[DATA_SIZE];
<BR> }
<BR>int open(void*){
<BR> ACE_DEBUG((LM_DEBUG,"Connection established"));
<P><FONT COLOR="#FF0000"> //Register the service handler with the
reactor</FONT>
<BR> ACE_Reactor::instance()->register_handler(this,
<BR> ACE_Event_Handler::READ_MASK);
<BR> return 0;
<BR> }
<P>int handle_input(ACE_HANDLE){
<BR> <FONT COLOR="#FF0000">//After using the peer() method of ACE_Svc_Handler
to obtain a</FONT>
<BR><FONT COLOR="#FF0000">//reference to the underlying stream of the service
handler class</FONT>
<BR><FONT COLOR="#FF0000">//we call recv_n() on it to read the data which
has been received.</FONT>
<BR><FONT COLOR="#FF0000">//This data is stored in the data array and then
printed out</FONT>
<BR> peer().recv_n(data,DATA_SIZE);
<BR> ACE_OS::printf("<< %s\n",data);
<P> <FONT COLOR="#FF0000">//keep yourself registered with the reactor</FONT>
<BR> return 0;
<BR> }
<BR>private:
<BR> char* data;
<BR>};
<P>int main(int argc, char* argv[]){
<BR> ACE_INET_Addr addr(PORT_NUM);
<BR><FONT COLOR="#FF0000"> //create the acceptor</FONT>
<BR> MyAcceptor acceptor(addr, <FONT COLOR="#FF0000">//address to
accept on</FONT>
<BR> ACE_Reactor::instance()); <FONT COLOR="#FF0000">//the reactor
to use</FONT>
<P>while(1)
<BR><FONT COLOR="#FF0000"> //Start the reactor?s event loop</FONT>
<BR> ACE_Reactor::instance()->handle_events();
<BR>}
<P> <A HREF="ex03.html">Next Example</A>
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