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/* Copyright (C) 2011 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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
* (at your option) any later version.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "NetSession.h"
#include "NetClient.h"
#include "NetServer.h"
#include "NetMessage.h"
#include "NetStats.h"
#include "lib/external_libraries/enet.h"
#include "ps/CLogger.h"
#include "scriptinterface/ScriptInterface.h"
static const int CHANNEL_COUNT = 1;
CNetClientSession::CNetClientSession(CNetClient& client) :
m_Client(client), m_FileTransferer(this), m_Host(NULL), m_Server(NULL), m_Stats(NULL)
{
}
CNetClientSession::~CNetClientSession()
{
delete m_Stats;
if (m_Host && m_Server)
{
// Disconnect immediately (we can't wait for acks)
enet_peer_disconnect_now(m_Server, NDR_UNEXPECTED_SHUTDOWN);
enet_host_destroy(m_Host);
m_Host = NULL;
m_Server = NULL;
}
}
bool CNetClientSession::Connect(u16 port, const CStr& server)
{
ENSURE(!m_Host);
ENSURE(!m_Server);
// Create ENet host
ENetHost* host = enet_host_create(NULL, 1, CHANNEL_COUNT, 0, 0);
if (!host)
return false;
// Bind to specified host
ENetAddress addr;
addr.port = port;
if (enet_address_set_host(&addr, server.c_str()) < 0)
return false;
// Initiate connection to server
ENetPeer* peer = enet_host_connect(host, &addr, CHANNEL_COUNT, 0);
if (!peer)
return false;
m_Host = host;
m_Server = peer;
m_Stats = new CNetStatsTable(m_Server);
if (CProfileViewer::IsInitialised())
g_ProfileViewer.AddRootTable(m_Stats);
return true;
}
void CNetClientSession::Disconnect(u32 reason)
{
ENSURE(m_Host && m_Server);
// TODO: ought to do reliable async disconnects, probably
enet_peer_disconnect_now(m_Server, reason);
enet_host_destroy(m_Host);
m_Host = NULL;
m_Server = NULL;
SAFE_DELETE(m_Stats);
}
void CNetClientSession::Poll()
{
PROFILE3("net client poll");
ENSURE(m_Host && m_Server);
m_FileTransferer.Poll();
ENetEvent event;
while (enet_host_service(m_Host, &event, 0) > 0)
{
switch (event.type)
{
case ENET_EVENT_TYPE_CONNECT:
{
ENSURE(event.peer == m_Server);
// Report the server address
char hostname[256] = "(error)";
enet_address_get_host_ip(&event.peer->address, hostname, ARRAY_SIZE(hostname));
LOGMESSAGE(L"Net client: Connected to %hs:%u", hostname, (unsigned int)event.peer->address.port);
m_Client.HandleConnect();
break;
}
case ENET_EVENT_TYPE_DISCONNECT:
{
ENSURE(event.peer == m_Server);
LOGMESSAGE(L"Net client: Disconnected");
m_Client.HandleDisconnect(event.data);
return;
}
case ENET_EVENT_TYPE_RECEIVE:
{
CNetMessage* msg = CNetMessageFactory::CreateMessage(event.packet->data, event.packet->dataLength, m_Client.GetScriptInterface());
if (msg)
{
LOGMESSAGE(L"Net client: Received message %hs of size %lu from server", msg->ToString().c_str(), (unsigned long)msg->GetSerializedLength());
m_Client.HandleMessage(msg);
delete msg;
}
enet_packet_destroy(event.packet);
break;
}
case ENET_EVENT_TYPE_NONE:
break;
}
}
}
void CNetClientSession::Flush()
{
PROFILE3("net client flush");
ENSURE(m_Host && m_Server);
enet_host_flush(m_Host);
}
bool CNetClientSession::SendMessage(const CNetMessage* message)
{
ENSURE(m_Host && m_Server);
return CNetHost::SendMessage(message, m_Server, "server");
}
CNetServerSession::CNetServerSession(CNetServerWorker& server, ENetPeer* peer) :
m_Server(server), m_FileTransferer(this), m_Peer(peer)
{
}
void CNetServerSession::Disconnect(u32 reason)
{
Update((uint)NMT_CONNECTION_LOST, NULL);
enet_peer_disconnect(m_Peer, reason);
}
void CNetServerSession::DisconnectNow(u32 reason)
{
enet_peer_disconnect_now(m_Peer, reason);
}
bool CNetServerSession::SendMessage(const CNetMessage* message)
{
return m_Server.SendMessage(m_Peer, message);
}
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