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122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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/*
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* Layer 5 and Service example, ping server.
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*
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* This ping service expects pings, sends pongs back.
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*
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* To run this program, ensure there is a file "ping_service.cfg"
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* containing the location of the naming service (NSHost, NSPort)
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* in the working directory. The naming service must be running.
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*/
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// We're using the NeL Service framework, and layer 5
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#include "nel/net/service.h"
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#include "nel/misc/displayer.h"
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using namespace NLNET;
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using namespace NLMISC;
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CFileDisplayer fd("ps.log");
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/*
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* Callback function called when receiving a "PING" message
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*
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* Arguments:
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* - msgin: the incoming message (coming from a client)
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* - from: the "sockid" of the sender client
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* - server: the CCallbackNetBase object (which really is a CCallbackServer object, for a server)
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*
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* Input (expected message from a client): PING
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* - uint32: ping counter
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*
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* Output (sent message to the ping server): PONG
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* - uint32: ping counter
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*/
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void cbPing(CMessage &msgin, const std::string &serviceName, TServiceId sid)
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{
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uint32 counter;
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// Input
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msgin.serial( counter );
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// Output (uses layer 4 but this is not really necessary, see server.cpp in layer 3 example)
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CMessage msgout("PONG");
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msgout.serial( counter );
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CUnifiedNetwork::getInstance()->send(sid, msgout);
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nlinfo( "PING -> PONG %u", counter );
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}
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//
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void cbUpService(const std::string &serviceName, TServiceId sid, void *arg)
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{
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nlinfo("Service %s %d is up", serviceName.c_str(), sid.get());
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// Output (uses layer 4 but this is not really necessary, see server.cpp in layer 3 example)
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CMessage msgout("PONG");
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uint32 counter = 0xFFFFFFFF;
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msgout.serial( counter );
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CUnifiedNetwork::getInstance()->send(sid, msgout);
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}
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void cbDownService(const std::string &serviceName, TServiceId sid, void *arg)
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{
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nlinfo("Service %s %d is down", serviceName.c_str(), sid.get());
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}
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/*
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* Callback array for messages received from a client
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*/
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TUnifiedCallbackItem CallbackArray[] =
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{
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{ "PING", cbPing }
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};
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//
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class CPingService : public IService
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{
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public:
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/*
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* Initialization
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*/
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void init()
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{
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DebugLog->addDisplayer (&fd);
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InfoLog->addDisplayer (&fd);
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WarningLog->addDisplayer (&fd);
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ErrorLog->addDisplayer (&fd);
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// Connect to the ping service
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CUnifiedNetwork *instance = CUnifiedNetwork::getInstance();
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instance->setServiceUpCallback("*", cbUpService, NULL);
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instance->setServiceDownCallback("*", cbDownService, NULL);
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}
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};
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/*
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* Declare a service with the class IService, the names "PS" (short) and "ping_service" (long).
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* The port is automatically allocated (0) and the main callback array is CallbackArray.
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*/
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NLNET_SERVICE_MAIN( CPingService, "PS", "ping_service", 0, CallbackArray, "", "" )
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