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Diffstat (limited to 'docs/tutorials/005/server.cpp')
| -rw-r--r-- | docs/tutorials/005/server.cpp | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/docs/tutorials/005/server.cpp b/docs/tutorials/005/server.cpp deleted file mode 100644 index 00f2f6778ae..00000000000 --- a/docs/tutorials/005/server.cpp +++ /dev/null @@ -1,111 +0,0 @@ -// $Id$ - -/* We try to keep main() very simple. One of the ways we do that is - to push much of the complicated stuff into worker objects. In this - case, we only need to include the acceptor header in our main - source file. We let it worry about the "real work". */ - -#include "client_acceptor.h" - -/* As before, we create a simple signal handler that will set our - finished flag. There are, of course, more elegant ways to handle - program shutdown requests but that isn't really our focus right - now, so we'll just do the easiest thing. */ - -static sig_atomic_t finished = 0; -extern "C" void handler (int) -{ - finished = 1; -} - -/* A server has to listen for clients at a known TCP/IP port. The - default ACE port is 10002 (at least on my system) and that's good - enough for what we want to do here. Obviously, a more robust - application would take a command line parameter or read from a - configuration file or do some other clever thing. Just like the - signal handler above, though, that's not what we want to focus on, - so we're taking the easy way out. */ - -static const u_short PORT = ACE_DEFAULT_SERVER_PORT; - -/* Finally, we get to main. Some C++ compilers will complain loudly - if your function signature doesn't match the prototype. Even - though we're not going to use the parameters, we still have to - specify them. */ - -int -main (int argc, char *argv[]) -{ - /* In our earlier servers, we used a global pointer to get to the - reactor. I've never really liked that idea, so I've moved it into - main() this time. When we get to the Client_Handler object you'll - see how we manage to get a pointer back to this reactor. */ - ACE_Reactor reactor; - - /* The acceptor will take care of letting clients connect to us. It - will also arrange for a Client_Handler to be created for each new - client. Since we're only going to listen at one TCP/IP port, we - only need one acceptor. If we wanted, though, we could create - several of these and listen at several ports. (That's what we - would do if we wanted to rewrite inetd for instance.) */ - Client_Acceptor peer_acceptor; - - /* Create an ACE_INET_Addr that represents our endpoint of a - connection. We then open our acceptor object with that Addr. - Doing so tells the acceptor where to listen for connections. - Servers generally listen at "well known" addresses. If not, there - must be some mechanism by which the client is informed of the - server's address. - - Note how ACE_ERROR_RETURN is used if we fail to open the acceptor. - This technique is used over and over again in our tutorials. */ - if (peer_acceptor.open (ACE_INET_Addr (PORT), - &reactor) == -1) - ACE_ERROR_RETURN ((LM_ERROR, - "%p\n", - "open"), - -1); - - /* Here, we know that the open was successful. If it had failed, we - would have exited above. A nice side-effect of the open() is that - we're already registered with the reactor we provided it. */ - - /* Install our signal handler. You can actually register signal - handlers with the reactor. You might do that when the signal - handler is responsible for performing "real" work. Our simple - flag-setter doesn't justify deriving from ACE_Event_Handler and - providing a callback function though. */ - ACE_Sig_Action sa ((ACE_SignalHandler) handler, SIGINT); - - /* Like ACE_ERROR_RETURN, the ACE_DEBUG macro gets used quite a bit. - It's a handy way to generate uniform debug output from your - program. */ - ACE_DEBUG ((LM_DEBUG, - "(%P|%t) starting up server daemon\n")); - - /* This will loop "forever" invoking the handle_events() method of - our reactor. handle_events() watches for activity on any - registered handlers and invokes their appropriate callbacks when - necessary. Callback-driven programming is a big thing in ACE, you - should get used to it. If the signal handler catches something, - the finished flag will be set and we'll exit. Conveniently - enough, handle_events() is also interrupted by signals and will - exit back to the while() loop. (If you want your event loop to - not be interrupted by signals, checkout the 'restart' flag on the - open() method of ACE_Reactor if you're interested.) */ - while (!finished) - reactor.handle_events (); - - ACE_DEBUG ((LM_DEBUG, - "(%P|%t) shutting down server daemon\n")); - - return 0; -} - -#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION) -template class ACE_Acceptor <Client_Handler, ACE_SOCK_ACCEPTOR>; -template class ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH>; -#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA) -#pragma instantiate ACE_Acceptor <Client_Handler, ACE_SOCK_ACCEPTOR> -#pragma instantiate ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH> -#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */ |