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<HTML>
<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 3</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: "IPC SAP" (Interprocess
Communication Mechanisms in ACE).</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><FONT COLOR="#FF0000"></FONT>
<P><FONT COLOR="#CC0000">// Example 3</FONT><FONT COLOR="#FF0000"></FONT>
<P><FONT COLOR="#FF0000">//Server</FONT>
<BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/OS.h"</FONT>
<BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/SOCK_Dgram.h"</FONT>
<BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/INET_Addr.h"</FONT>
<P><FONT COLOR="#000099">#define </FONT><FONT COLOR="#663366">DATA_BUFFER_SIZE
1024</FONT>
<BR><FONT COLOR="#000099">#define</FONT> <FONT COLOR="#663366">SIZE_DATA
18</FONT>
<P>class Server{
<BR>public:
<BR>Server(int local_port)
<BR> :local_addr_(local_port),local_(local_addr_){
<BR> data_buf = new char[DATA_BUFFER_SIZE];
<BR> }
<BR><FONT COLOR="#FF0000">//Expect data to arrive from the remote machine.
Accept it and display it.</FONT>
<BR><FONT COLOR="#FF0000">// After recieveing data immediately send some
data back to the remote.</FONT>
<BR>int accept_data(){
<BR> while(local_.recv(data_buf,SIZE_DATA,remote_addr_)!=-1){
<BR> ACE_DEBUG((LM_DEBUG, "Data received from remote %s was %s \n"
<BR> ,remote_addr_.get_host_name(), data_buf));
<BR> ACE_OS::sleep(1);
<BR> if(send_data()==-1) break;
<BR> }
<BR> return -1;
<BR> }
<BR>
<BR>
<P><FONT COLOR="#FF0000">//Method used to send data to the remote using
the datagram component local_</FONT>
<BR>int send_data(){
<BR> ACE_DEBUG((LM_DEBUG,"Preparing to send reply to client %s:%d\n",
<BR> remote_addr_.get_host_name(),remote_addr_.get_port_number()));
<BR> ACE_OS::sprintf(data_buf,"Server says hello to you too");
<BR> if(
<BR> local_.send(data_buf, ACE_OS::strlen(data_buf),remote_addr_)==-1)
<BR> return -1;
<BR> else
<BR> return 0;
<BR> }
<P>private:
<BR> char *data_buf;
<BR> ACE_INET_Addr remote_addr_;
<BR> ACE_INET_Addr local_addr_;
<BR> ACE_SOCK_Dgram local_;
<BR>};
<P>int main(int argc, char *argv[]){
<BR> Server server(ACE_OS::atoi(argv[1]));
<BR> server.accept_data();
<BR>}
<P> <A HREF="ex04.html">Next Example</A>
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