diff options
Diffstat (limited to 'docs/tutorials/009')
| -rw-r--r-- | docs/tutorials/009/Makefile | 63 | ||||
| -rw-r--r-- | docs/tutorials/009/broadcast_client.cpp | 39 | ||||
| -rw-r--r-- | docs/tutorials/009/directed_client.cpp | 52 | ||||
| -rw-r--r-- | docs/tutorials/009/page01.html | 52 | ||||
| -rw-r--r-- | docs/tutorials/009/page02.html | 130 | ||||
| -rw-r--r-- | docs/tutorials/009/page03.html | 100 | ||||
| -rw-r--r-- | docs/tutorials/009/page04.html | 74 | ||||
| -rw-r--r-- | docs/tutorials/009/page05.html | 50 | ||||
| -rw-r--r-- | docs/tutorials/009/server.cpp | 78 |
9 files changed, 0 insertions, 638 deletions
diff --git a/docs/tutorials/009/Makefile b/docs/tutorials/009/Makefile deleted file mode 100644 index 2bf85af82b7..00000000000 --- a/docs/tutorials/009/Makefile +++ /dev/null @@ -1,63 +0,0 @@ -#---------------------------------------------------------------------------- -# $Id$ -#---------------------------------------------------------------------------- - -#---------------------------------------------------------------------------- -# Local macros -#---------------------------------------------------------------------------- - -BIN = server directed_client broadcast_client - -FILES = - -BUILD = $(VBIN) - -SRC = $(addsuffix .cpp,$(BIN)) - -HDR = *.h - -#---------------------------------------------------------------------------- -# Include macros and targets -#---------------------------------------------------------------------------- - -include $(ACE_ROOT)/include/makeinclude/wrapper_macros.GNU -include $(ACE_ROOT)/include/makeinclude/macros.GNU -include $(ACE_ROOT)/include/makeinclude/rules.common.GNU -include $(ACE_ROOT)/include/makeinclude/rules.nonested.GNU -include $(ACE_ROOT)/include/makeinclude/rules.lib.GNU -include $(ACE_ROOT)/include/makeinclude/rules.bin.GNU -include $(ACE_ROOT)/include/makeinclude/rules.local.GNU - -#---------------------------------------------------------------------------- -# Local targets -#---------------------------------------------------------------------------- - -Indent : # - for i in $(SRC) $(HDR) ; do \ - indent -npsl -bli0 -l80 -fca -fc1 -cli0 -cdb < $$i | \ - sed -e 's/: :/::/g' \ - -e 's/^.*\(public:\)/\1/' \ - -e 's/^.*\(protected:\)/\1/' \ - -e 's/^.*\(private:\)/\1/' \ - -e 's/:\(public\)/ : \1/' \ - -e 's/:\(protected\)/ : \1/' \ - -e 's/:\(private\)/ : \1/' \ - > $$i~ ;\ - mv $$i~ $$i ;\ - done - -Depend : depend - perl ../fix.Makefile - -.depend : # - touch .depend - -#---------------------------------------------------------------------------- -# Dependencies -#---------------------------------------------------------------------------- - - # Don't put anything below here. Between the "depend" target and fix.Makefile - # it's guaranteed to be lost! - - # This is inserted by the fix.Makefile script -include .depend diff --git a/docs/tutorials/009/broadcast_client.cpp b/docs/tutorials/009/broadcast_client.cpp deleted file mode 100644 index 76ff454d066..00000000000 --- a/docs/tutorials/009/broadcast_client.cpp +++ /dev/null @@ -1,39 +0,0 @@ - -// $Id$ - -#include "ace/SOCK_Dgram_Bcast.h" -#include "ace/INET_Addr.h" - -static const u_short PORT = ACE_DEFAULT_SERVER_PORT; - -int main (int argc, char *argv[]) -{ - ACE_INET_Addr local ((u_short) 0); - ACE_INET_Addr remote (PORT, INADDR_BROADCAST); - ACE_SOCK_Dgram_Bcast dgram; - - if (dgram.open (local) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), -1); - } - - char buf[512]; - - sprintf (buf, argc > 1 ? argv[1] : "Hello World!"); - - if (dgram.send (buf, strlen (buf) + 1, remote) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "send"), -1); - } - - ACE_Time_Value timeout (2, 0); - if (dgram.recv (buf, sizeof (buf), remote, 0, &timeout) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "recv"), -1); - } - - ACE_DEBUG ((LM_DEBUG, "(%P|%t) The server at (%s) said (%s)\n", - remote.get_host_name (), buf)); - - return (0); -} diff --git a/docs/tutorials/009/directed_client.cpp b/docs/tutorials/009/directed_client.cpp deleted file mode 100644 index 7156286bec1..00000000000 --- a/docs/tutorials/009/directed_client.cpp +++ /dev/null @@ -1,52 +0,0 @@ - -// $Id$ - -#include "ace/SOCK_Dgram.h" -#include "ace/INET_Addr.h" - -static const u_short PORT = ACE_DEFAULT_SERVER_PORT; - -int main (int argc, char *argv[]) -{ - ACE_INET_Addr local ((u_short) 0); - ACE_INET_Addr remote (PORT, argc > 1 ? argv[1] : "localhost"); - ACE_SOCK_Dgram dgram; - - if (dgram.open (local) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), -1); - } - - char buf[512]; - - /* - In order to conform to the "protocol" requried by the server, - we allow the user to specify a signature. A default matching - the server's default is also available. - */ - sprintf (buf, argc > 2 ? argv[2] : "Hello World!"); - - if (dgram.send (buf, strlen (buf) + 1, remote) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "send"), -1); - } - - /* - Because we may have sent a signature that the server doesn't - honor, we have to have some way to get out of the recv(). - Most ACE objects that have potential for infinite blocking - give you the option of providing a timeout. recv() is no - exception. Here, we construct an ACE_Time_Value representing - two seconds and no micro-seconds. If recv() fails to get - a response within the two seconds, it will return -1. - */ - ACE_Time_Value timeout (2, 0); - if (dgram.recv (buf, sizeof (buf), remote, 0, &timeout) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "recv"), -1); - } - - ACE_DEBUG ((LM_DEBUG, "(%P|%t) The server said (%s)\n", buf)); - - return (0); -} diff --git a/docs/tutorials/009/page01.html b/docs/tutorials/009/page01.html deleted file mode 100644 index 77bacc3d4cc..00000000000 --- a/docs/tutorials/009/page01.html +++ /dev/null @@ -1,52 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 009</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 009</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Sending and receiving datagrams again</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>In our previous tutorial, we created a datagram listener and a couple -of clients that would send it datagrams. That server would respond -to any datagram sent to the TCP/IP port at which the server was listening. -What we really want to do, however, is to have the server only respond -to clients that meet some criteria. - -<P>Why is this important? - -<P>Imagine you're writting a distributed system that will have many server -applications. Each of those will probably listen at different (and -well-known) TCP/IP addresses so that clients can find each server -without confusion. However... In a large system you might have -several <I>versions</I> of the same server running at the same time*. -You probably don't want those servers running at different addresses since -that breaks the well-known address requirement. - -<P>By creating a datagram listener similar to the last tutorial, a client -can send broadcast datagrams to locate all of the servers listening at -the well-known address. By adding a thin protocol layer into -the datagram contents, the servers can be selective about which clients -they respond to. Thus, if each client sends its version signature -in the broadcast, then the servers can choose to respond only to clients -with matching versions. - -<P><FONT SIZE=-1>*Note: I'm making the assumption that your multiple -server versions will be running on different hosts since you can only have -one server listening at the well-known address on a given host.</FONT> - -<P> -<HR WIDTH="100%"> -<CENTER>[<A HREF="..">Tutorial Index</A>] [<A HREF="page02.html">Continue -This Tutorial</A>]</CENTER> - -</BODY> -</HTML> diff --git a/docs/tutorials/009/page02.html b/docs/tutorials/009/page02.html deleted file mode 100644 index e2997a16409..00000000000 --- a/docs/tutorials/009/page02.html +++ /dev/null @@ -1,130 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 009</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 009</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Sending and receiving datagrams again</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>Let's take a look at our new <A HREF="server.cpp">server.cpp</A> where -we add in just a bit of code to examine the datagram contents before responding. - -<P> -<HR WIDTH="100%"><TT></TT> - -<P><TT>/*</TT> -<BR><TT> The actual datagram operations here are exactly the -same as those used in</TT> -<BR><TT> the previous tutorial. What we've added is some -logic that will prevent</TT> -<BR><TT> this server from responding to just any old datagram. -I'll limit my</TT> -<BR><TT> comments to those pieces of code.</TT> -<BR><TT> */</TT><TT></TT> - -<P><TT>#include "ace/SOCK_Dgram.h"</TT> -<BR><TT>#include "ace/INET_Addr.h"</TT><TT></TT> - -<P><TT>static const u_short PORT = ACE_DEFAULT_SERVER_PORT;</TT><TT></TT> - -<P><TT>/*</TT> -<BR><TT> In order to be more selective, our server will be -started with a</TT> -<BR><TT> "signature". If none is given, we'll use the -one here instead.</TT> -<BR><TT> */</TT> -<BR><TT>static const char *default_signature = "Hello World!";</TT><TT></TT> - -<P><TT>int main (int argc, char *argv[])</TT> -<BR><TT>{</TT> -<BR><TT> ACE_INET_Addr local (PORT);</TT> -<BR><TT> ACE_SOCK_Dgram dgram;</TT><TT></TT> - -<P><TT> if (dgram.open (local) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> char buf[512];</TT> -<BR><TT> ACE_INET_Addr remote;</TT><TT></TT> - -<P><TT> while (dgram.recv (buf, sizeof (buf), remote) != -1)</TT> -<BR><TT> {</TT> -<BR><TT> /*</TT> -<BR><TT> What did the client say?</TT> -<BR><TT> */</TT> -<BR><TT> ACE_DEBUG ((LM_DEBUG, "(%P|%t) Received (%s) -from (%s)\n", buf, remote.get_host_name ()));</TT><TT></TT> - -<P><TT> /*</TT> -<BR><TT> Use a simple string-op to -decide if the client is one of our own. Of</TT> -<BR><TT> course, you could have sent -numeric values or even a struct of data. For</TT> -<BR><TT> this simple exercise, however, -strings are just fine.</TT> -<BR><TT> */</TT> -<BR><TT> if (ACE_OS::strcmp (buf, argc > 1 ? argv[1] -: default_signature))</TT> -<BR><TT> {</TT> -<BR><TT> /*</TT> -<BR><TT> If the client -didn't say something we like then log it and move on.</TT> -<BR><TT> */</TT> -<BR><TT> ACE_DEBUG ((LM_DEBUG,</TT> -<BR><TT> -"(%P|%t) Client query does not match our signature (%s). Response -not sent.\n",</TT> -<BR><TT> -argc > 1 ? argv[1] : default_signature));</TT> -<BR><TT> }</TT> -<BR><TT> else</TT> -<BR><TT> {</TT> -<BR><TT> /*</TT> -<BR><TT> As before, we -respond to the client's query.</TT> -<BR><TT> */</TT><TT></TT> - -<P><TT> ACE_INET_Addr local ((u_short) 0);</TT> -<BR><TT> ACE_SOCK_Dgram client;</TT> -<BR><TT> if (client.open (local) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN -((LM_ERROR, "%p\n", "response open"), -1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> sprintf (buf, "I am here");</TT> -<BR><TT> if (client.send (buf, strlen (buf) -+ 1, remote) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN -((LM_ERROR, "%p\n", "response send"), -1);</TT> -<BR><TT> }</TT> -<BR><TT> }</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> return (0);</TT> -<BR><TT>}</TT><TT></TT> - -<P> -<HR WIDTH="100%"> - -<P>Let's move on and see what changes the clients require... - -<P> -<HR WIDTH="100%"> -<CENTER>[<A HREF="..">Tutorial Index</A>] [<A HREF="page03.html">Continue -This Tutorial</A>]</CENTER> - -</BODY> -</HTML> diff --git a/docs/tutorials/009/page03.html b/docs/tutorials/009/page03.html deleted file mode 100644 index 447bf38d497..00000000000 --- a/docs/tutorials/009/page03.html +++ /dev/null @@ -1,100 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 009</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 009</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Sending and receiving datagrams again</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>Our new <A HREF="directed_client.cpp">directed_client.cpp</A> -is very much like our previous one. The primary difference is the -addition of a timeout to the recv() call so that we can exit somewhat gracefully -if the server doesn't like what we have to say. - -<P> -<HR WIDTH="100%"><TT></TT> - -<P><TT>#include "ace/SOCK_Dgram.h"</TT> -<BR><TT>#include "ace/INET_Addr.h"</TT><TT></TT> - -<P><TT>static const u_short PORT = ACE_DEFAULT_SERVER_PORT;</TT><TT></TT> - -<P><TT>int main (int argc, char *argv[])</TT> -<BR><TT>{</TT> -<BR><TT> ACE_INET_Addr local ((u_short) 0);</TT> -<BR><TT> ACE_INET_Addr remote (PORT, argc > 1 ? argv[1] : "localhost");</TT> -<BR><TT> ACE_SOCK_Dgram dgram;</TT><TT></TT> - -<P><TT> if (dgram.open (local) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> char buf[512];</TT><TT></TT> - -<P><TT> /*</TT> -<BR><TT> In order to conform to the "protocol" -requried by the server,</TT> -<BR><TT> we allow the user to specify a signature. -A default matching</TT> -<BR><TT> the server's default is also available.</TT> -<BR><TT> */</TT> -<BR><TT> sprintf (buf, argc > 2 ? argv[2] : "Hello World!");</TT><TT></TT> - -<P><TT> if (dgram.send (buf, strlen (buf) + 1, remote) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "send"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> /*</TT> -<BR><TT> Because we may have sent a signature that -the server doesn't</TT> -<BR><TT> honor, we have to have some way to get -out of the recv().</TT> -<BR><TT> Most ACE objects that have potential for -infinite blocking</TT> -<BR><TT> give you the option of providing a timeout. -recv() is no</TT> -<BR><TT> exception. Here, we construct an -ACE_Time_Value representing</TT> -<BR><TT> two seconds and no micro-seconds. -If recv() fails to get</TT> -<BR><TT> a response within the two seconds, it -will return -1.</TT> -<BR><TT> */</TT> -<BR><TT> ACE_Time_Value timeout (2, 0);</TT> -<BR><TT> if (dgram.recv (buf, sizeof (buf), remote, 0, &timeout) -== -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "recv"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> ACE_DEBUG ((LM_DEBUG, "(%P|%t) The server said (%s)\n", buf));</TT><TT></TT> - -<P><TT> return (0);</TT> -<BR><TT>}</TT> - -<P> -<HR WIDTH="100%"> - -<P>On the next page, we see that the directed_client gets similar upgrades. - -<P> -<HR WIDTH="100%"> -<CENTER>[<A HREF="..">Tutorial Index</A>] [<A HREF="page04.html">Continue -This Tutorial</A>]</CENTER> - -</BODY> -</HTML> diff --git a/docs/tutorials/009/page04.html b/docs/tutorials/009/page04.html deleted file mode 100644 index e1875503b8c..00000000000 --- a/docs/tutorials/009/page04.html +++ /dev/null @@ -1,74 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 009</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 009</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Sending and receiving datagrams again</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>As you can see in <A HREF="broadcast_client.cpp">broadcast_client.cpp</A>, -there isn't enough difference to even comment on! Look back to the -Tutorial 8 version of this file. The only difference is the addition -of the timeout variable passed to recv(). - -<P> -<HR WIDTH="100%"><TT></TT> - -<P><TT>#include "ace/SOCK_Dgram_Bcast.h"</TT> -<BR><TT>#include "ace/INET_Addr.h"</TT><TT></TT> - -<P><TT>static const u_short PORT = ACE_DEFAULT_SERVER_PORT;</TT><TT></TT> - -<P><TT>int main (int argc, char *argv[])</TT> -<BR><TT>{</TT> -<BR><TT> ACE_INET_Addr local ((u_short) 0);</TT> -<BR><TT> ACE_INET_Addr remote (PORT, INADDR_BROADCAST);</TT> -<BR><TT> ACE_SOCK_Dgram_Bcast dgram;</TT><TT></TT> - -<P><TT> if (dgram.open (local) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> char buf[512];</TT><TT></TT> - -<P><TT> sprintf (buf, argc > 1 ? argv[1] : "Hello World!");</TT><TT></TT> - -<P><TT> if (dgram.send (buf, strlen (buf) + 1, remote) == -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "send"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> ACE_Time_Value timeout (2, 0);</TT> -<BR><TT> if (dgram.recv (buf, sizeof (buf), remote, 0, &timeout) -== -1)</TT> -<BR><TT> {</TT> -<BR><TT> ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "recv"), --1);</TT> -<BR><TT> }</TT><TT></TT> - -<P><TT> ACE_DEBUG ((LM_DEBUG, "(%P|%t) The server at (%s) said (%s)\n",</TT> -<BR><TT> -remote.get_host_name (), buf));</TT><TT></TT> - -<P><TT> return (0);</TT> -<BR><TT>}</TT> - -<P> -<HR WIDTH="100%"> -<CENTER>[<A HREF="..">Tutorial Index</A>] [<A HREF="page05.html">Continue -This Tutorial</A>]</CENTER> - -</BODY> -</HTML> diff --git a/docs/tutorials/009/page05.html b/docs/tutorials/009/page05.html deleted file mode 100644 index 771e113e961..00000000000 --- a/docs/tutorials/009/page05.html +++ /dev/null @@ -1,50 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (X11; I; Linux 2.0.32 i486) [Netscape]"> - <META NAME="Author" CONTENT="James CE Johnson"> - <TITLE>ACE Tutorial 009</TITLE> -</HEAD> -<BODY TEXT="#000000" BGCOLOR="#FFFFFF" LINK="#000FFF" VLINK="#FF0F0F"> - -<CENTER><B><FONT SIZE=+2>ACE Tutorial 009</FONT></B></CENTER> - -<CENTER><B><FONT SIZE=+2>Sending and receiving datagrams again</FONT></B></CENTER> - - -<P> -<HR WIDTH="100%"> - -<P>In this tutorial we've expanded on Tutorial 8 to provide a more discriminating -server application. The changes to the clients were trivial, amounting -to not much more than the addition of a timeout when reading a server's -potential response. The server change was a bit more since it had -to compare the clients' query with it's own signature. - -<P>In a "real" system, the signatures you swap would probably include version -information. You could even use a major/minor scheme where an exact -match isn't necessary. Another upgrade might be to have a set of -signatures at one or both ends of the conversation. The level of -service provided by the server would be determined by the signature pair -match. - -<P>Here's the final file list: -<UL> -<LI> -<A HREF="Makefile">Makefile</A></LI> - -<LI> -<A HREF="server.cpp">server.cpp</A></LI> - -<LI> -<A HREF="directed_client.cpp">directed_client.cpp</A></LI> - -<LI> -<A HREF="broadcast_client.cpp">broadcast_client.cpp</A></LI> -</UL> - -<HR WIDTH="100%"> -<CENTER>[<A HREF="..">Tutorial Index</A>]</CENTER> - -</BODY> -</HTML> diff --git a/docs/tutorials/009/server.cpp b/docs/tutorials/009/server.cpp deleted file mode 100644 index f73c7fd4ad3..00000000000 --- a/docs/tutorials/009/server.cpp +++ /dev/null @@ -1,78 +0,0 @@ - -// $Id$ - -/* - The actual datagram operations here are exactly the same as those used in - the previous tutorial. What we've added is some logic that will prevent - this server from responding to just any old datagram. I'll limit my - comments to those pieces of code. - */ - -#include "ace/SOCK_Dgram.h" -#include "ace/INET_Addr.h" - -static const u_short PORT = ACE_DEFAULT_SERVER_PORT; - -/* - In order to be more selective, our server will be started with a - "signature". If none is given, we'll use the one here instead. - */ -static const char *default_signature = "Hello World!"; - -int main (int argc, char *argv[]) -{ - ACE_INET_Addr local (PORT); - ACE_SOCK_Dgram dgram; - - if (dgram.open (local) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "open"), -1); - } - - char buf[512]; - ACE_INET_Addr remote; - - while (dgram.recv (buf, sizeof (buf), remote) != -1) - { - /* - What did the client say? - */ - ACE_DEBUG ((LM_DEBUG, "(%P|%t) Received (%s) from (%s)\n", buf, remote.get_host_name ())); - - /* - Use a simple string-op to decide if the client is one of our own. Of - course, you could have sent numeric values or even a struct of data. For - this simple exercise, however, strings are just fine. - */ - if (ACE_OS::strcmp (buf, argc > 1 ? argv[1] : default_signature)) - { - /* - If the client didn't say something we like then log it and move on. - */ - ACE_DEBUG ((LM_DEBUG, - "(%P|%t) Client query does not match our signature (%s). Response not sent.\n", - argc > 1 ? argv[1] : default_signature)); - } - else - { - /* - As before, we respond to the client's query. - */ - - ACE_INET_Addr local ((u_short) 0); - ACE_SOCK_Dgram client; - if (client.open (local) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "response open"), -1); - } - - sprintf (buf, "I am here"); - if (client.send (buf, strlen (buf) + 1, remote) == -1) - { - ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "response send"), -1); - } - } - } - - return (0); -} |