docs/tutorials/Chap_2/ex06.html


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   <TITLE>Example 6</TITLE>
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<FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT>
<BR><FONT COLOR="#CC0000">//// This example is from the ACE Programmers
Guide.</FONT>
<BR><FONT COLOR="#CC0000">////&nbsp; 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">////&nbsp; 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 6</FONT>
<BR><FONT COLOR="#000099">#define</FONT> <FONT COLOR="#663366">DEFAULT_MULTICAST_ADDR
"224.9.9.2"</FONT>
<BR><FONT COLOR="#000099">#define</FONT> <FONT COLOR="#663366">TIMEOUT
5</FONT>
<BR><FONT COLOR="#000099">#include</FONT><FONT COLOR="#006600"> "ace/SOCK_Dgram_Mcast.h"</FONT>
<BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/OS.h"</FONT>

<P>class Sender_Multicast{
<BR>public:
<BR>Sender_Multicast(int port):
<BR>&nbsp;local_addr_((u_short)0),dgram_(local_addr_),
<BR>&nbsp;multicast_addr_(port,DEFAULT_MULTICAST_ADDR){}

<P><FONT COLOR="#FF0000">//Method which uses a simple datagram component
to send data to the multicast group.</FONT>
<BR>int send_to_multicast_group(){
<BR>&nbsp;&nbsp; <FONT COLOR="#FF0000">//Convert the information we wish
to send into network byte order</FONT>
<BR>&nbsp;mcast_info= htons (1000);

<P><FONT COLOR="#FF0000">&nbsp;// Send multicast</FONT>
<BR>&nbsp;if(dgram_.send
<BR>&nbsp;&nbsp;&nbsp; (&amp;mcast_info, sizeof (mcast_info), multicast_addr_)==-1)
<BR>&nbsp;&nbsp;&nbsp; return -1;

<P>&nbsp;ACE_DEBUG ((LM_DEBUG,
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
"%s; Sent multicast to group.&nbsp; Number sent is %d.\n",
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
__FILE__,
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
mcast_info));
<BR>&nbsp; return 0;
<BR>}

<P>private:
<BR>&nbsp;ACE_INET_Addr multicast_addr_;
<BR>&nbsp;ACE_INET_Addr local_addr_;
<BR>&nbsp;ACE_SOCK_Dgram dgram_;
<BR>&nbsp;int mcast_info;
<BR>};
<BR>&nbsp;

<P>int main(int argc, char*argv[]){
<BR>Sender_Multicast m(2000);
<BR>if(m.send_to_multicast_group()==-1) {
<BR>&nbsp;ACE_DEBUG((LM_ERROR,"Send to Multicast group failed \n"));
<BR>&nbsp;exit(-1);
<BR>&nbsp;}
<BR>else
<BR>&nbsp;ACE_DEBUG((LM_DEBUG,"Send to Multicast group succesful \n"));
<BR>}

<P>&nbsp;<A HREF="../Chap_3/ex01.html">Next Example</A>
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