<HTML> <!-- ex10.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 10</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="#CC0000">//Example 10</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_Event_Handler,ACE_SOCK_ACCEPTOR> <BR>MyAcceptor; <P><FONT COLOR="#FF0000">//Create an event handler similar to as seen in example 2.</FONT> <BR><FONT COLOR="#FF0000">//We have to overload the get_handle() method and write the peer()</FONT> <BR><FONT COLOR="#FF0000">//method. We also provide the data member peer_ as the underlying</FONT> <BR><FONT COLOR="#FF0000">//stream which is used.</FONT> <BR>class My_Event_Handler: <BR> public ACE_Event_Handler{ <BR>private: <BR>char* data; <BR><FONT COLOR="#FF0000">//Add a new attribute for the underlying stream which will be used by the Event Handler</FONT> <BR>ACE_SOCK_Stream peer_; <BR>public: <BR>My_Event_Handler(){ <BR> data= new char[DATA_SIZE]; <BR> } <P>int <BR>open(void*){ <BR> ACE_DEBUG((LM_DEBUG,"Connection established\n")); <BR><FONT COLOR="#FF0000"> //Register the event handler with the reactor</FONT> <BR> ACE_Reactor::instance()->register_handler(this, ACE_Event_Handler::READ_MASK); <BR> return 0; <BR> } <P>int <BR>handle_input(ACE_HANDLE){ <BR> <FONT COLOR="#FF0000">// After using the peer() method of our ACE_Event_Handler to obtain a</FONT> <BR><FONT COLOR="#FF0000"> //reference to the underlying stream of the service handler class we</FONT> <BR><FONT COLOR="#FF0000"> //call recv_n() on it to read the data which has been received. This</FONT> <BR><FONT COLOR="#FF0000"> //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> } <P><FONT COLOR="#FF0000">// new method which returns the handle to the reactor when it asks for it.</FONT> <BR>ACE_HANDLE <BR>get_handle(void) const{ <BR> return this->peer_.get_handle(); <BR> } <P><FONT COLOR="#FF0000">//new method which returns a reference to the peer stream</FONT> <BR>ACE_SOCK_Stream & <BR>peer(void) const{ <BR> return (ACE_SOCK_Stream &) this->peer_; <BR> } <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> <BR>while(1)<FONT COLOR="#FF0000"> // Start the reactors event loop</FONT> <BR> ACE_Reactor::instance()->handle_events(); <BR>} <BR> <BR> <A HREF="../Chap_7/ex01.html">Next Example</A> </BODY> </HTML>