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/*
* The Mana World
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* The Mana World is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#include "network.h"
#include "messagehandler.h"
#include "messagein.h"
#include "messageout.h"
#include "../log.h"
Network::Network():
mClient(0), mServer(0),
mAddress(), mPort(0),
mState(IDLE)
{
}
Network::~Network()
{
clearHandlers();
if (mState != IDLE && mState != ERROR)
disconnect();
}
bool Network::connect(const std::string &address, short port)
{
if (mState != IDLE && mState != ERROR)
{
logger->log("Tried to connect an already connected socket!");
return false;
}
if (address.empty())
{
logger->log("Empty address given to Network::connect()!");
mState = ERROR;
return false;
}
logger->log("Network::Connecting to %s:%i", address.c_str(), port);
mAddress = address;
mPort = port;
mState = CONNECTING;
mClient = enet_host_create (0, 1, 0, 0);
if (!mClient)
{
logger->error("An error occurred while trying to create an ENet client.");
}
ENetAddress enetAddress;
enet_address_set_host(&enetAddress, address.c_str());
enetAddress.port = port;
// Initiate the connection, allocating channel 0.
mServer = enet_host_connect(mClient, &enetAddress, 1);
if (mServer == 0)
{
logger->log("Unable to initiate connection to the server.");
mState = ERROR;
return false;
}
return true;
}
void Network::disconnect()
{
mState = IDLE;
if (mServer)
{
enet_peer_disconnect(mServer, 0);
enet_host_flush(mClient);
enet_peer_reset(mServer);
mServer = 0;
}
}
void Network::registerHandler(MessageHandler *handler)
{
const Uint16 *i = handler->handledMessages;
while(*i)
{
mMessageHandlers[*i] = handler;
i++;
}
handler->setNetwork(this);
}
void Network::unregisterHandler(MessageHandler *handler)
{
for (const Uint16 *i = handler->handledMessages; *i; i++)
{
mMessageHandlers.erase(*i);
}
handler->setNetwork(0);
}
void Network::clearHandlers()
{
MessageHandlerIterator i;
for (i = mMessageHandlers.begin(); i != mMessageHandlers.end(); i++)
{
i->second->setNetwork(0);
}
mMessageHandlers.clear();
}
void Network::dispatchMessages()
{
while (!mIncomingPackets.empty())
{
ENetPacket *packet = mIncomingPackets.front();
MessageIn msg((const char *)packet->data, packet->dataLength);
MessageHandlerIterator iter = mMessageHandlers.find(msg.getId());
printf("Received packet: %x\n", msg.getId());
if (iter != mMessageHandlers.end())
iter->second->handleMessage(&msg);
else
logger->log("Unhandled packet: %x", msg.getId());
mIncomingPackets.pop();
// Clean up the packet now that we're done using it.
enet_packet_destroy(packet);
}
}
void Network::flush()
{
if (mState == IDLE || mState == NET_ERROR)
{
return;
}
ENetEvent event;
// Wait up to 10 milliseconds for an event.
while (enet_host_service(mClient, &event, 10) > 0)
{
switch (event.type)
{
case ENET_EVENT_TYPE_CONNECT:
mState = CONNECTED;
// Store any relevant server information here.
event.peer->data = 0;
break;
case ENET_EVENT_TYPE_RECEIVE:
mIncomingPackets.push(event.packet);
break;
case ENET_EVENT_TYPE_DISCONNECT:
mState = IDLE;
printf("Disconnected\n");
// Reset the server information.
event.peer->data = 0;
break;
default:
logger->log("Unhandled enet event.");
break;
}
}
// If connected, manage incoming and outcoming packets
if (isConnected())
{
while (isConnected() && !mOutgoingPackets.empty())
{
ENetPacket *packet = mOutgoingPackets.front();
enet_peer_send(mServer, 0, packet);
mOutgoingPackets.pop();
}
dispatchMessages();
}
}
void Network::send(MessageOut *msg)
{
if (mState == IDLE || mState == NET_ERROR)
{
return;
}
ENetPacket *packet = enet_packet_create(msg->getData(),
msg->getDataSize() + 1, ENET_PACKET_FLAG_RELIABLE);
mOutgoingPackets.push(packet);
}
char *iptostring(int address)
{
static char asciiIP[16];
sprintf(asciiIP, "%i.%i.%i.%i",
(unsigned char)(address),
(unsigned char)(address >> 8),
(unsigned char)(address >> 16),
(unsigned char)(address >> 24));
return asciiIP;
}
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