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110 lines
3 KiB
C++
110 lines
3 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 3 example, client.
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*
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* This client connects to a front-end server at localhost:37000.
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* It sends pings and expects pongs (ping replies).
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*/
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// We're using NeL
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#include "nel/misc/types_nl.h"
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#include "nel/misc/debug.h"
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using namespace NLMISC;
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// We're using CInetAddress, CMessage and CCallbackClient (because we're building a client)
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#include "nel/net/inet_address.h"
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#include "nel/net/message.h"
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#include "nel/net/callback_client.h"
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using namespace NLNET;
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/*
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* Callback function called when receiving a "PONG" message
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*
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* Arguments:
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* - msgin: the incoming message
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* - from: the "sockid" of the sender (usually useless for a CCallbackClient)
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* - client: the CCallbackNetBase object (which really is a CCallbackClient object, for a client)
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*
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* Input (expected message): PONG
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* - uint32: ping counter
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*
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* Output (sent message): PING
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* - uint32: new ping counter
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*/
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void cbPong( CMessage& msgin, TSockId from, CCallbackNetBase& client )
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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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nlinfo( "Received PONG number %u", counter );
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counter++;
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// Output
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CMessage msgout ( "PING" );
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msgout.serial( counter );
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client.send( msgout );
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nlinfo( "Sent PING number %u", counter );
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}
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/*
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* Callback array
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*/
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TCallbackItem CallbackArray[] =
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{
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{ "PONG", cbPong } // when receiving a "PONG" message, call cbPong()
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};
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/*
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* main
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*/
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void main( int argc, char **argv )
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{
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try
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{
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// Initialize and connect to the front-end server at localhost:37000
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CCallbackClient client;
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client.addCallbackArray( CallbackArray, sizeof(CallbackArray)/sizeof(CallbackArray[0]) );
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client.connect( CInetAddress( "localhost" , 37000 ) );
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// Send a PING message
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uint32 counter = 0;
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CMessage msg( "PING" ); // create the message
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msg.serial( counter ); // serialize the counter into the message
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client.send( msg ); // put into the send queue
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nlinfo( "Sent PING number %u", counter );
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// Main loop
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while ( client.connected() )
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{
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// Perform sends and receives, call callbacks
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client.update();
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}
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nlinfo( "Disconnected" );
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}
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catch ( Exception &e )
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{
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nlerror( "Error: %s", e.what() );
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}
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}
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