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/*
* The Mana World Server
* 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 "netsession.h"
#include "connectionhandler.h"
#include "utils/logger.h"
/**
* This function is the new thread created to listen to a server socket. It
* immediately passes control over to the connection handler instance that will
* deal with incoming connections and data.
*/
void *startListenThread(void *data)
{
ListenThreadData *ltd = (ListenThreadData*)data;
ltd->handler->startListen(ltd);
pthread_exit(NULL);
}
NetSession::NetSession()
{
}
NetSession::~NetSession()
{
// Stop listening to any ports
}
void NetSession::startListen(ConnectionHandler *handler, enet_uint16 port)
{
// Here we will probably need the creation of a listening thread, which
// will call connect/disconnect events on the given ConnectionHandler and
// will cut incoming data into Packets and send them there too.
ListenThreadData *data = new ListenThreadData();
data->handler = handler;
data->running = true;
ENetHost *server;
// Bind the server to the default localhost.
data->address.host = ENET_HOST_ANY;
data->address.port = port;
server = enet_host_create(&data->address /* the address to bind the server host to */,
MAX_CLIENTS /* allow up to MAX_CLIENTS clients and/or outgoing connections */,
0 /* assume any amount of incoming bandwidth */,
0 /* assume any amount of outgoing bandwidth */);
if (server == NULL)
{
LOG_ERROR("Unable to create an ENet server host.", 0);
exit(3);
}
data->host = server;
// Start the listening thread
int rc = pthread_create(&data->thread, NULL,
startListenThread, (void *)data);
if (rc) {
LOG_ERROR("pthread_create: " << rc, 0);
exit(4);
}
/*data->thread = SDL_CreateThread(startListenThread, data);
if (data->thread == NULL) {
LOG_ERROR("SDL_CreateThread: " << SDL_GetError(), 0);
exit(4);
}*/
listeners[port] = data;
}
void NetSession::stopListen(enet_uint16 port)
{
std::map<enet_uint16, ListenThreadData*>::iterator threadDataI;
threadDataI = listeners.find(port);
if (threadDataI != listeners.end())
{
ListenThreadData *data = (*threadDataI).second;
// Tell listen thread to stop running
data->running = false;
// Wait for listen thread to stop and close socket
// Note: Somewhere in this process the ConnectionHandler should receive
// disconnect notifications about all the connected clients.
//SDL_WaitThread(data->thread, NULL);
enet_host_destroy(data->host);
delete data;
listeners.erase(threadDataI);
}
else
{
LOG_WARN("NetSession::stopListen() not listening to port %d!\n", port);
}
}
NetComputer *NetSession::connect(const std::string &host, enet_uint16 port)
{
// Try to connect to given host:port, and return NetComputer objects that
// can be used to send messages that way, or NULL when failing to connect.
//
// An asynchroneous wrapper could be created around this method.
ENetHost *client;
client = enet_host_create(NULL, 1, 0, 0);
if (client == NULL)
{
LOG_ERROR("Unable to create an ENet client host.", 0);
exit(3);
}
ENetAddress address;
ENetEvent event;
ENetPeer *peer;
// Connect to host:port.
enet_address_set_host(&address, host.c_str());
address.port = port;
// Initiate the connection, allocating the channel 0.
peer = enet_host_connect(client, &address, 1);
if (peer == NULL)
{
LOG_ERROR("No available peer for initiating an ENet connection.", 0);
exit(4);
}
// Wait up to 5 seconds for the connection attempt to succeed.
if (enet_host_service (client, &event, 5000) > 0 &&
event.type == ENET_EVENT_TYPE_CONNECT)
{
LOG_INFO("Connection succeeded.", 0);
}
else
{
/* Either the 5 seconds are up or a disconnect event was */
/* received. Reset the peer in the event the 5 seconds */
/* had run out without any significant event. */
enet_peer_reset(peer);
LOG_ERROR("Connection failed.", 0);
exit(5);
}
return NULL;
}
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