Initial files

1 files changed, 1639 insertions, 0 deletions

diff --git a/src/client.cpp b/src/client.cpp
new file mode 100644
index 000000000..ee3269974
--- /dev/null
+++ b/src/client.cpp
@@ -0,0 +1,1639 @@
+#include "client.h"
+#include "utility.h"
+#include <iostream>
+#include "clientserver.h"
+#include "jmutexautolock.h"
+#include "main.h"
+#include <sstream>
+
+#ifdef _WIN32
+	#include <windows.h>
+	#define sleep_ms(x) Sleep(x)
+#else
+	#include <unistd.h>
+	#define sleep_ms(x) usleep(x*1000)
+#endif
+
+/*
+	FIXME: This thread can access the environment at any time
+*/
+
+void * ClientUpdateThread::Thread()
+{
+	ThreadStarted();
+
+	DSTACK(__FUNCTION_NAME);
+
+#if CATCH_UNHANDLED_EXCEPTIONS
+	try
+	{
+#endif
+		while(getRun())
+		{
+			m_client->asyncStep();
+
+			bool was = m_client->AsyncProcessData();
+
+			if(was == false)
+				sleep_ms(50);
+		}
+#if CATCH_UNHANDLED_EXCEPTIONS
+	}
+	/*
+		This is what has to be done in threads to get suitable debug info
+	*/
+	catch(std::exception &e)
+	{
+		dstream<<std::endl<<DTIME<<"An unhandled exception occurred: "
+				<<e.what()<<std::endl;
+		assert(0);
+	}
+#endif
+
+	return NULL;
+}
+
+Client::Client(IrrlichtDevice *device, video::SMaterial *materials,
+		float delete_unused_sectors_timeout,
+		const char *playername):
+	m_thread(this),
+	m_env(new ClientMap(this, materials,
+			device->getSceneManager()->getRootSceneNode(),
+			device->getSceneManager(), 666),
+			dout_client),
+	m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
+	m_device(device),
+	camera_position(0,0,0),
+	camera_direction(0,0,1),
+	m_server_ser_ver(SER_FMT_VER_INVALID),
+	m_step_dtime(0.0),
+	m_delete_unused_sectors_timeout(delete_unused_sectors_timeout),
+	m_inventory_updated(false)
+{
+	//m_fetchblock_mutex.Init();
+	m_incoming_queue_mutex.Init();
+	m_env_mutex.Init();
+	m_con_mutex.Init();
+	m_step_dtime_mutex.Init();
+
+	m_thread.Start();
+	
+	{
+		JMutexAutoLock envlock(m_env_mutex);
+		//m_env.getMap().StartUpdater();
+
+		Player *player = new LocalPlayer();
+
+		player->updateName(playername);
+
+		/*f32 y = BS*2 + BS*20;
+		player->setPosition(v3f(0, y, 0));*/
+		//player->setPosition(v3f(0, y, 30900*BS)); // DEBUG
+		m_env.addPlayer(player);
+	}
+}
+
+Client::~Client()
+{
+	m_thread.setRun(false);
+	while(m_thread.IsRunning())
+		sleep_ms(100);
+}
+
+void Client::connect(Address address)
+{
+	DSTACK(__FUNCTION_NAME);
+	JMutexAutoLock lock(m_con_mutex);
+	m_con.setTimeoutMs(0);
+	m_con.Connect(address);
+}
+
+bool Client::connectedAndInitialized()
+{
+	JMutexAutoLock lock(m_con_mutex);
+
+	if(m_con.Connected() == false)
+		return false;
+	
+	if(m_server_ser_ver == SER_FMT_VER_INVALID)
+		return false;
+	
+	return true;
+}
+
+void Client::step(float dtime)
+{
+	DSTACK(__FUNCTION_NAME);
+	
+	// Limit a bit
+	if(dtime > 2.0)
+		dtime = 2.0;
+	
+	//dstream<<"Client steps "<<dtime<<std::endl;
+
+	{
+		//TimeTaker timer("ReceiveAll()", m_device);
+		// 0ms
+		ReceiveAll();
+	}
+	
+	{
+		//TimeTaker timer("m_con_mutex + m_con.RunTimeouts()", m_device);
+		// 0ms
+		JMutexAutoLock lock(m_con_mutex);
+		m_con.RunTimeouts(dtime);
+	}
+
+	{
+		/*
+			Delete unused sectors
+		*/
+		
+		static float counter = -0.001;
+		counter -= dtime;
+		if(counter <= 0.0)
+		{
+			counter = 10.0;
+
+			JMutexAutoLock lock(m_env_mutex);
+
+			core::list<v3s16> deleted_blocks;
+	
+			// Delete sector blocks
+			/*u32 num = m_env.getMap().deleteUnusedSectors
+					(m_delete_unused_sectors_timeout,
+					true, &deleted_blocks);*/
+			
+			// Delete whole sectors
+			u32 num = m_env.getMap().deleteUnusedSectors
+					(m_delete_unused_sectors_timeout,
+					false, &deleted_blocks);
+
+			if(num > 0)
+			{
+				dstream<<DTIME<<"Client: Deleted blocks of "<<num
+						<<" unused sectors"<<std::endl;
+				
+				/*
+					Send info to server
+				*/
+
+				// Env is locked so con can be locked.
+				JMutexAutoLock lock(m_con_mutex);
+				
+				core::list<v3s16>::Iterator i = deleted_blocks.begin();
+				core::list<v3s16> sendlist;
+				for(;;)
+				{
+					if(sendlist.size() == 255 || i == deleted_blocks.end())
+					{
+						if(sendlist.size() == 0)
+							break;
+						/*
+							[0] u16 command
+							[2] u8 count
+							[3] v3s16 pos_0
+							[3+6] v3s16 pos_1
+							...
+						*/
+						u32 replysize = 2+1+6*sendlist.size();
+						SharedBuffer<u8> reply(replysize);
+						writeU16(&reply[0], TOSERVER_DELETEDBLOCKS);
+						reply[2] = sendlist.size();
+						u32 k = 0;
+						for(core::list<v3s16>::Iterator
+								j = sendlist.begin();
+								j != sendlist.end(); j++)
+						{
+							writeV3S16(&reply[2+1+6*k], *j);
+							k++;
+						}
+						m_con.Send(PEER_ID_SERVER, 1, reply, true);
+
+						if(i == deleted_blocks.end())
+							break;
+
+						sendlist.clear();
+					}
+
+					sendlist.push_back(*i);
+					i++;
+				}
+			}
+		}
+	}
+
+	bool connected = connectedAndInitialized();
+
+	if(connected == false)
+	{
+		static float counter = -0.001;
+		counter -= dtime;
+		if(counter <= 0.0)
+		{
+			counter = 2.0;
+
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			Player *myplayer = m_env.getLocalPlayer();
+			assert(myplayer != NULL);
+	
+			// Send TOSERVER_INIT
+			// [0] u16 TOSERVER_INIT
+			// [2] u8 SER_FMT_VER_HIGHEST
+			// [3] u8[20] player_name
+			SharedBuffer<u8> data(2+1+20);
+			writeU16(&data[0], TOSERVER_INIT);
+			writeU8(&data[2], SER_FMT_VER_HIGHEST);
+			memcpy(&data[3], myplayer->getName(), 20);
+			// Send as unreliable
+			Send(0, data, false);
+		}
+
+		// Not connected, return
+		return;
+	}
+
+	/*
+		Do stuff if connected
+	*/
+	
+	{
+		// 0ms
+		JMutexAutoLock lock(m_env_mutex);
+
+		// Control local player (0ms)
+		LocalPlayer *player = m_env.getLocalPlayer();
+		assert(player != NULL);
+		player->applyControl(dtime);
+
+		//TimeTaker envtimer("env step", m_device);
+		// Step environment
+		m_env.step(dtime);
+
+		// Step active blocks
+		for(core::map<v3s16, bool>::Iterator
+				i = m_active_blocks.getIterator();
+				i.atEnd() == false; i++)
+		{
+			v3s16 p = i.getNode()->getKey();
+
+			MapBlock *block = NULL;
+			try
+			{
+				block = m_env.getMap().getBlockNoCreate(p);
+				block->stepObjects(dtime, false);
+			}
+			catch(InvalidPositionException &e)
+			{
+			}
+		}
+	}
+
+	{
+		// Fetch some nearby blocks
+		//fetchBlocks();
+	}
+
+	{
+		static float counter = 0.0;
+		counter += dtime;
+		if(counter >= 10)
+		{
+			counter = 0.0;
+			JMutexAutoLock lock(m_con_mutex);
+			// connectedAndInitialized() is true, peer exists.
+			con::Peer *peer = m_con.GetPeer(PEER_ID_SERVER);
+			dstream<<DTIME<<"Client: avg_rtt="<<peer->avg_rtt<<std::endl;
+		}
+	}
+	{
+		// Update at reasonable intervals (0.2s)
+		static float counter = 0.0;
+		counter += dtime;
+		if(counter >= 0.2)
+		{
+			counter = 0.0;
+			sendPlayerPos();
+		}
+	}
+
+#if 0
+	/*
+		Clear old entries from fetchblock history
+	*/
+	{
+		JMutexAutoLock lock(m_fetchblock_mutex);
+		
+		core::list<v3s16> remove_queue;
+		core::map<v3s16, float>::Iterator i;
+		i = m_fetchblock_history.getIterator();
+		for(; i.atEnd() == false; i++)
+		{
+			float value = i.getNode()->getValue();
+			value += dtime;
+			i.getNode()->setValue(value);
+			if(value >= 60.0)
+				remove_queue.push_back(i.getNode()->getKey());
+		}
+		core::list<v3s16>::Iterator j;
+		j = remove_queue.begin();
+		for(; j != remove_queue.end(); j++)
+		{
+			m_fetchblock_history.remove(*j);
+		}
+	}
+#endif
+
+	/*{
+		JMutexAutoLock lock(m_step_dtime_mutex);
+		m_step_dtime += dtime;
+	}*/
+	
+	/*
+		BEGIN TEST CODE
+	*/
+
+	/*
+		END OF TEST CODE
+	*/
+}
+
+float Client::asyncStep()
+{
+	DSTACK(__FUNCTION_NAME);
+	//dstream<<"Client::asyncStep()"<<std::endl;
+	
+	/*float dtime;
+	{
+		JMutexAutoLock lock1(m_step_dtime_mutex);
+		dtime = m_step_dtime;
+		m_step_dtime = 0.0;
+	}
+
+	return dtime;*/
+	return 0.0;
+}
+
+// Virtual methods from con::PeerHandler
+void Client::peerAdded(con::Peer *peer)
+{
+	derr_client<<"Client::peerAdded(): peer->id="
+			<<peer->id<<std::endl;
+}
+void Client::deletingPeer(con::Peer *peer, bool timeout)
+{
+	derr_client<<"Client::deletingPeer(): "
+			"Server Peer is getting deleted "
+			<<"(timeout="<<timeout<<")"<<std::endl;
+}
+
+void Client::ReceiveAll()
+{
+	DSTACK(__FUNCTION_NAME);
+	for(;;)
+	{
+		try{
+			Receive();
+		}
+		catch(con::NoIncomingDataException &e)
+		{
+			break;
+		}
+		catch(con::InvalidIncomingDataException &e)
+		{
+			dout_client<<DTIME<<"Client::ReceiveAll(): "
+					"InvalidIncomingDataException: what()="
+					<<e.what()<<std::endl;
+		}
+		//TODO: Testing
+		//break;
+	}
+}
+
+void Client::Receive()
+{
+	DSTACK(__FUNCTION_NAME);
+	u32 data_maxsize = 10000;
+	Buffer<u8> data(data_maxsize);
+	u16 sender_peer_id;
+	u32 datasize;
+	{
+		//TimeTaker t1("con mutex and receive", m_device);
+		JMutexAutoLock lock(m_con_mutex);
+		datasize = m_con.Receive(sender_peer_id, *data, data_maxsize);
+	}
+	//TimeTaker t1("ProcessData", m_device);
+	ProcessData(*data, datasize, sender_peer_id);
+}
+
+/*
+	sender_peer_id given to this shall be quaranteed to be a valid peer
+*/
+void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
+{
+	DSTACK(__FUNCTION_NAME);
+	// Ignore packets that don't even fit a command
+	if(datasize < 2)
+		return;
+
+	ToClientCommand command = (ToClientCommand)readU16(&data[0]);
+	
+	/*
+		If this check is removed, be sure to change the queue
+		system to know the ids
+	*/
+	if(sender_peer_id != PEER_ID_SERVER)
+	{
+		dout_client<<DTIME<<"Client::ProcessData(): Discarding data not "
+				"coming from server: peer_id="<<sender_peer_id
+				<<std::endl;
+		return;
+	}
+
+	con::Peer *peer;
+	{
+		JMutexAutoLock lock(m_con_mutex);
+		// All data is coming from the server
+		// PeerNotFoundException is handled by caller.
+		peer = m_con.GetPeer(PEER_ID_SERVER);
+	}
+
+	u8 ser_version = m_server_ser_ver;
+
+	//dstream<<"Client received command="<<(int)command<<std::endl;
+
+	// Execute fast commands straight away
+
+	if(command == TOCLIENT_INIT)
+	{
+		if(datasize < 3)
+			return;
+
+		u8 deployed = data[2];
+
+		dout_client<<DTIME<<"Client: TOCLIENT_INIT received with "
+				"deployed="<<((int)deployed&0xff)<<std::endl;
+
+		if(deployed < SER_FMT_VER_LOWEST
+				|| deployed > SER_FMT_VER_HIGHEST)
+		{
+			derr_client<<DTIME<<"Client: TOCLIENT_INIT: Server sent "
+					<<"unsupported ser_fmt_ver"<<std::endl;
+			return;
+		}
+		
+		m_server_ser_ver = deployed;
+
+		// Get player position
+		v3s16 playerpos_s16(0, BS*2+BS*20, 0);
+		if(datasize >= 2+1+6)
+			playerpos_s16 = readV3S16(&data[2+1]);
+		v3f playerpos_f = intToFloat(playerpos_s16) - v3f(0, BS/2, 0);
+
+		{ //envlock
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			// Set player position
+			Player *player = m_env.getLocalPlayer();
+			assert(player != NULL);
+			player->setPosition(playerpos_f);
+		}
+		
+		// Reply to server
+		u32 replysize = 2;
+		SharedBuffer<u8> reply(replysize);
+		writeU16(&reply[0], TOSERVER_INIT2);
+		// Send as reliable
+		m_con.Send(PEER_ID_SERVER, 1, reply, true);
+
+		return;
+	}
+	
+	if(ser_version == SER_FMT_VER_INVALID)
+	{
+		dout_client<<DTIME<<"WARNING: Client: Server serialization"
+				" format invalid or not initialized."
+				" Skipping incoming command="<<command<<std::endl;
+		return;
+	}
+	
+	// Just here to avoid putting the two if's together when
+	// making some copypasta
+	{}
+
+	if(command == TOCLIENT_PLAYERPOS)
+	{
+		dstream<<"WARNING: Received deprecated TOCLIENT_PLAYERPOS"
+				<<std::endl;
+		/*u16 our_peer_id;
+		{
+			JMutexAutoLock lock(m_con_mutex);
+			our_peer_id = m_con.GetPeerID();
+		}
+		// Cancel if we don't have a peer id
+		if(our_peer_id == PEER_ID_NEW){
+			dout_client<<DTIME<<"TOCLIENT_PLAYERPOS cancelled: "
+					"we have no peer id"
+					<<std::endl;
+			return;
+		}*/
+
+		{ //envlock
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			u32 player_size = 2+12+12+4+4;
+				
+			u32 player_count = (datasize-2) / player_size;
+			u32 start = 2;
+			for(u32 i=0; i<player_count; i++)
+			{
+				u16 peer_id = readU16(&data[start]);
+
+				Player *player = m_env.getPlayer(peer_id);
+
+				// Skip if player doesn't exist
+				if(player == NULL)
+				{
+					start += player_size;
+					continue;
+				}
+
+				// Skip if player is local player
+				if(player->isLocal())
+				{
+					start += player_size;
+					continue;
+				}
+
+				v3s32 ps = readV3S32(&data[start+2]);
+				v3s32 ss = readV3S32(&data[start+2+12]);
+				s32 pitch_i = readS32(&data[start+2+12+12]);
+				s32 yaw_i = readS32(&data[start+2+12+12+4]);
+				/*dstream<<"Client: got "
+						<<"pitch_i="<<pitch_i
+						<<" yaw_i="<<yaw_i<<std::endl;*/
+				f32 pitch = (f32)pitch_i / 100.0;
+				f32 yaw = (f32)yaw_i / 100.0;
+				v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
+				v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
+				player->setPosition(position);
+				player->setSpeed(speed);
+				player->setPitch(pitch);
+				player->setYaw(yaw);
+
+				/*dstream<<"Client: player "<<peer_id
+						<<" pitch="<<pitch
+						<<" yaw="<<yaw<<std::endl;*/
+
+				start += player_size;
+			}
+		} //envlock
+	}
+	else if(command == TOCLIENT_PLAYERINFO)
+	{
+		u16 our_peer_id;
+		{
+			JMutexAutoLock lock(m_con_mutex);
+			our_peer_id = m_con.GetPeerID();
+		}
+		// Cancel if we don't have a peer id
+		if(our_peer_id == PEER_ID_NEW){
+			dout_client<<DTIME<<"TOCLIENT_PLAYERINFO cancelled: "
+					"we have no peer id"
+					<<std::endl;
+			return;
+		}
+		
+		//dstream<<DTIME<<"Client: Server reports players:"<<std::endl;
+
+		{ //envlock
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			u32 item_size = 2+PLAYERNAME_SIZE;
+			u32 player_count = (datasize-2) / item_size;
+			u32 start = 2;
+			// peer_ids
+			core::list<u16> players_alive;
+			for(u32 i=0; i<player_count; i++)
+			{
+				// Make sure the name ends in '\0'
+				data[start+2+20-1] = 0;
+
+				u16 peer_id = readU16(&data[start]);
+
+				players_alive.push_back(peer_id);
+				
+				/*dstream<<DTIME<<"peer_id="<<peer_id
+						<<" name="<<((char*)&data[start+2])<<std::endl;*/
+
+				// Don't update the info of the local player
+				if(peer_id == our_peer_id)
+				{
+					start += item_size;
+					continue;
+				}
+
+				Player *player = m_env.getPlayer(peer_id);
+
+				// Create a player if it doesn't exist
+				if(player == NULL)
+				{
+					player = new RemotePlayer(
+							m_device->getSceneManager()->getRootSceneNode(),
+							m_device,
+							-1);
+					player->peer_id = peer_id;
+					m_env.addPlayer(player);
+					dout_client<<DTIME<<"Client: Adding new player "
+							<<peer_id<<std::endl;
+				}
+				
+				player->updateName((char*)&data[start+2]);
+
+				start += item_size;
+			}
+			
+			/*
+				Remove those players from the environment that
+				weren't listed by the server.
+			*/
+			//dstream<<DTIME<<"Removing dead players"<<std::endl;
+			core::list<Player*> players = m_env.getPlayers();
+			core::list<Player*>::Iterator ip;
+			for(ip=players.begin(); ip!=players.end(); ip++)
+			{
+				// Ingore local player
+				if((*ip)->isLocal())
+					continue;
+				
+				// Warn about a special case
+				if((*ip)->peer_id == 0)
+				{
+					dstream<<DTIME<<"WARNING: Client: Removing "
+							"dead player with id=0"<<std::endl;
+				}
+
+				bool is_alive = false;
+				core::list<u16>::Iterator i;
+				for(i=players_alive.begin(); i!=players_alive.end(); i++)
+				{
+					if((*ip)->peer_id == *i)
+					{
+						is_alive = true;
+						break;
+					}
+				}
+				/*dstream<<DTIME<<"peer_id="<<((*ip)->peer_id)
+						<<" is_alive="<<is_alive<<std::endl;*/
+				if(is_alive)
+					continue;
+				dstream<<DTIME<<"Removing dead player "<<(*ip)->peer_id
+						<<std::endl;
+				m_env.removePlayer((*ip)->peer_id);
+			}
+		} //envlock
+	}
+	else if(command == TOCLIENT_SECTORMETA)
+	{
+		/*
+			[0] u16 command
+			[2] u8 sector count
+			[3...] v2s16 pos + sector metadata
+		*/
+		if(datasize < 3)
+			return;
+
+		//dstream<<"Client received TOCLIENT_SECTORMETA"<<std::endl;
+
+		{ //envlock
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			std::string datastring((char*)&data[2], datasize-2);
+			std::istringstream is(datastring, std::ios_base::binary);
+
+			u8 buf[4];
+
+			is.read((char*)buf, 1);
+			u16 sector_count = readU8(buf);
+			
+			//dstream<<"sector_count="<<sector_count<<std::endl;
+
+			for(u16 i=0; i<sector_count; i++)
+			{
+				// Read position
+				is.read((char*)buf, 4);
+				v2s16 pos = readV2S16(buf);
+				/*dstream<<"Client: deserializing sector at "
+						<<"("<<pos.X<<","<<pos.Y<<")"<<std::endl;*/
+				// Create sector
+				assert(m_env.getMap().mapType() == MAPTYPE_CLIENT);
+				((ClientMap&)m_env.getMap()).deSerializeSector(pos, is);
+			}
+		} //envlock
+	}
+	else if(command == TOCLIENT_INVENTORY)
+	{
+		if(datasize < 3)
+			return;
+
+		//TimeTaker t1("Parsing TOCLIENT_INVENTORY", m_device);
+
+		{ //envlock
+			//TimeTaker t2("mutex locking", m_device);
+			JMutexAutoLock envlock(m_env_mutex);
+			//t2.stop();
+			
+			//TimeTaker t3("istringstream init", m_device);
+			std::string datastring((char*)&data[2], datasize-2);
+			std::istringstream is(datastring, std::ios_base::binary);
+			//t3.stop();
+			
+			//m_env.printPlayers(dstream);
+
+			//TimeTaker t4("player get", m_device);
+			Player *player = m_env.getLocalPlayer();
+			assert(player != NULL);
+			//t4.stop();
+
+			//TimeTaker t1("inventory.deSerialize()", m_device);
+			player->inventory.deSerialize(is);
+			//t1.stop();
+
+			m_inventory_updated = true;
+
+			//dstream<<"Client got player inventory:"<<std::endl;
+			//player->inventory.print(dstream);
+		}
+	}
+	//DEBUG
+	else if(command == TOCLIENT_OBJECTDATA)
+	//else if(0)
+	{
+		// Strip command word and create a stringstream
+		std::string datastring((char*)&data[2], datasize-2);
+		std::istringstream is(datastring, std::ios_base::binary);
+		
+		{ //envlock
+		
+		JMutexAutoLock envlock(m_env_mutex);
+
+		u8 buf[12];
+
+		/*
+			Read players
+		*/
+
+		is.read((char*)buf, 2);
+		u16 playercount = readU16(buf);
+		
+		for(u16 i=0; i<playercount; i++)
+		{
+			is.read((char*)buf, 2);
+			u16 peer_id = readU16(buf);
+			is.read((char*)buf, 12);
+			v3s32 p_i = readV3S32(buf);
+			is.read((char*)buf, 12);
+			v3s32 s_i = readV3S32(buf);
+			is.read((char*)buf, 4);
+			s32 pitch_i = readS32(buf);
+			is.read((char*)buf, 4);
+			s32 yaw_i = readS32(buf);
+			
+			Player *player = m_env.getPlayer(peer_id);
+
+			// Skip if player doesn't exist
+			if(player == NULL)
+			{
+				continue;
+			}
+
+			// Skip if player is local player
+			if(player->isLocal())
+			{
+				continue;
+			}
+	
+			f32 pitch = (f32)pitch_i / 100.0;
+			f32 yaw = (f32)yaw_i / 100.0;
+			v3f position((f32)p_i.X/100., (f32)p_i.Y/100., (f32)p_i.Z/100.);
+			v3f speed((f32)s_i.X/100., (f32)s_i.Y/100., (f32)s_i.Z/100.);
+			
+			player->setPosition(position);
+			player->setSpeed(speed);
+			player->setPitch(pitch);
+			player->setYaw(yaw);
+		}
+
+		/*
+			Read block objects
+		*/
+
+		// Read active block count
+		is.read((char*)buf, 2);
+		u16 blockcount = readU16(buf);
+		
+		// Initialize delete queue with all active blocks
+		core::map<v3s16, bool> abs_to_delete;
+		for(core::map<v3s16, bool>::Iterator
+				i = m_active_blocks.getIterator();
+				i.atEnd() == false; i++)
+		{
+			v3s16 p = i.getNode()->getKey();
+			/*dstream<<"adding "
+					<<"("<<p.x<<","<<p.y<<","<<p.z<<") "
+					<<" to abs_to_delete"
+					<<std::endl;*/
+			abs_to_delete.insert(p, true);
+		}
+
+		/*dstream<<"Initial delete queue size: "<<abs_to_delete.size()
+				<<std::endl;*/
+		
+		for(u16 i=0; i<blockcount; i++)
+		{
+			// Read blockpos
+			is.read((char*)buf, 6);
+			v3s16 p = readV3S16(buf);
+			// Get block from somewhere
+			MapBlock *block = NULL;
+			try{
+				block = m_env.getMap().getBlockNoCreate(p);
+			}
+			catch(InvalidPositionException &e)
+			{
+				//TODO: Create a dummy block?
+			}
+			if(block == NULL)
+			{
+				dstream<<"WARNING: "
+						<<"Could not get block at blockpos "
+						<<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
+						<<"in TOCLIENT_OBJECTDATA. Ignoring "
+						<<"following block object data."
+						<<std::endl;
+				return;
+			}
+
+			/*dstream<<"Client updating objects for block "
+					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
+					<<std::endl;*/
+
+			// Insert to active block list
+			m_active_blocks.insert(p, true);
+
+			// Remove from deletion queue
+			if(abs_to_delete.find(p) != NULL)
+				abs_to_delete.remove(p);
+
+			// Update objects of block
+			block->updateObjects(is, m_server_ser_ver,
+					m_device->getSceneManager());
+		}
+		
+		/*dstream<<"Final delete queue size: "<<abs_to_delete.size()
+				<<std::endl;*/
+		
+		// Delete objects of blocks in delete queue
+		for(core::map<v3s16, bool>::Iterator
+				i = abs_to_delete.getIterator();
+				i.atEnd() == false; i++)
+		{
+			v3s16 p = i.getNode()->getKey();
+			try
+			{
+				MapBlock *block = m_env.getMap().getBlockNoCreate(p);
+				
+				// Clear objects
+				block->clearObjects();
+				// Remove from active blocks list
+				m_active_blocks.remove(p);
+			}
+			catch(InvalidPositionException &e)
+			{
+				dstream<<"WARNAING: Client: "
+						<<"Couldn't clear objects of active->inactive"
+						<<" block "
+						<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
+						<<" because block was not found"
+						<<std::endl;
+				// Ignore
+			}
+		}
+
+		} //envlock
+	}
+	// Default to queueing it (for slow commands)
+	else
+	{
+		JMutexAutoLock lock(m_incoming_queue_mutex);
+		
+		IncomingPacket packet(data, datasize);
+		m_incoming_queue.push_back(packet);
+	}
+}
+
+/*
+	Returns true if there was something in queue
+*/
+bool Client::AsyncProcessPacket(LazyMeshUpdater &mesh_updater)
+{
+	DSTACK(__FUNCTION_NAME);
+	
+	try //for catching con::PeerNotFoundException
+	{
+
+	con::Peer *peer;
+	{
+		JMutexAutoLock lock(m_con_mutex);
+		// All data is coming from the server
+		peer = m_con.GetPeer(PEER_ID_SERVER);
+	}
+	
+	u8 ser_version = m_server_ser_ver;
+
+	IncomingPacket packet = getPacket();
+	u8 *data = packet.m_data;
+	u32 datasize = packet.m_datalen;
+	
+	// An empty packet means queue is empty
+	if(data == NULL){
+		return false;
+	}
+	
+	if(datasize < 2)
+		return true;
+	
+	ToClientCommand command = (ToClientCommand)readU16(&data[0]);
+
+	if(command == TOCLIENT_REMOVENODE)
+	{
+		if(datasize < 8)
+			return true;
+		v3s16 p;
+		p.X = readS16(&data[2]);
+		p.Y = readS16(&data[4]);
+		p.Z = readS16(&data[6]);
+		
+		//TimeTaker t1("TOCLIENT_REMOVENODE", g_device);
+
+		core::map<v3s16, MapBlock*> modified_blocks;
+
+		try
+		{
+			JMutexAutoLock envlock(m_env_mutex);
+			//TimeTaker t("removeNodeAndUpdate", m_device);
+			m_env.getMap().removeNodeAndUpdate(p, modified_blocks);
+		}
+		catch(InvalidPositionException &e)
+		{
+		}
+		
+		for(core::map<v3s16, MapBlock * >::Iterator
+				i = modified_blocks.getIterator();
+				i.atEnd() == false; i++)
+		{
+			v3s16 p = i.getNode()->getKey();
+			//m_env.getMap().updateMeshes(p);
+			mesh_updater.add(p);
+		}
+	}
+	else if(command == TOCLIENT_ADDNODE)
+	{
+		if(datasize < 8 + MapNode::serializedLength(ser_version))
+			return true;
+
+		v3s16 p;
+		p.X = readS16(&data[2]);
+		p.Y = readS16(&data[4]);
+		p.Z = readS16(&data[6]);
+		
+		//TimeTaker t1("TOCLIENT_ADDNODE", g_device);
+
+		MapNode n;
+		n.deSerialize(&data[8], ser_version);
+		
+		core::map<v3s16, MapBlock*> modified_blocks;
+
+		try
+		{
+			JMutexAutoLock envlock(m_env_mutex);
+			m_env.getMap().addNodeAndUpdate(p, n, modified_blocks);
+		}
+		catch(InvalidPositionException &e)
+		{}
+		
+		for(core::map<v3s16, MapBlock * >::Iterator
+				i = modified_blocks.getIterator();
+				i.atEnd() == false; i++)
+		{
+			v3s16 p = i.getNode()->getKey();
+			//m_env.getMap().updateMeshes(p);
+			mesh_updater.add(p);
+		}
+	}
+	else if(command == TOCLIENT_BLOCKDATA)
+	{
+		// Ignore too small packet
+		if(datasize < 8)
+			return true;
+		/*if(datasize < 8 + MapBlock::serializedLength(ser_version))
+			goto getdata;*/
+			
+		v3s16 p;
+		p.X = readS16(&data[2]);
+		p.Y = readS16(&data[4]);
+		p.Z = readS16(&data[6]);
+		
+		/*dout_client<<DTIME<<"Client: Thread: BLOCKDATA for ("
+				<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
+
+		/*dstream<<DTIME<<"Client: Thread: BLOCKDATA for ("
+				<<p.X<<","<<p.Y<<","<<p.Z<<"): ";*/
+		
+		std::string datastring((char*)&data[8], datasize-8);
+		std::istringstream istr(datastring, std::ios_base::binary);
+		
+		MapSector *sector;
+		MapBlock *block;
+		
+		{ //envlock
+			JMutexAutoLock envlock(m_env_mutex);
+			
+			v2s16 p2d(p.X, p.Z);
+			sector = m_env.getMap().emergeSector(p2d);
+			
+			v2s16 sp = sector->getPos();
+			if(sp != p2d)
+			{
+				dstream<<"ERROR: Got sector with getPos()="
+						<<"("<<sp.X<<","<<sp.Y<<"), tried to get"
+						<<"("<<p2d.X<<","<<p2d.Y<<")"<<std::endl;
+			}
+
+			assert(sp == p2d);
+			//assert(sector->getPos() == p2d);
+			
+			try{
+				block = sector->getBlockNoCreate(p.Y);
+				/*
+					Update an existing block
+				*/
+				//dstream<<"Updating"<<std::endl;
+				block->deSerialize(istr, ser_version);
+				//block->setChangedFlag();
+			}
+			catch(InvalidPositionException &e)
+			{
+				/*
+					Create a new block
+				*/
+				//dstream<<"Creating new"<<std::endl;
+				block = new MapBlock(&m_env.getMap(), p);
+				block->deSerialize(istr, ser_version);
+				sector->insertBlock(block);
+				//block->setChangedFlag();
+			}
+		} //envlock
+		
+		
+		// Old version has zero lighting, update it.
+		if(ser_version == 0 || ser_version == 1)
+		{
+			derr_client<<"Client: Block in old format: "
+					"Calculating lighting"<<std::endl;
+			core::map<v3s16, MapBlock*> blocks_changed;
+			blocks_changed.insert(block->getPos(), block);
+			core::map<v3s16, MapBlock*> modified_blocks;
+			m_env.getMap().updateLighting(blocks_changed, modified_blocks);
+		}
+
+		/*
+			Update Mesh of this block and blocks at x-, y- and z-
+		*/
+
+		//m_env.getMap().updateMeshes(block->getPos());
+		mesh_updater.add(block->getPos());
+		
+		/*
+			Acknowledge block.
+		*/
+		/*
+			[0] u16 command
+			[2] u8 count
+			[3] v3s16 pos_0
+			[3+6] v3s16 pos_1
+			...
+		*/
+		u32 replysize = 2+1+6;
+		SharedBuffer<u8> reply(replysize);
+		writeU16(&reply[0], TOSERVER_GOTBLOCKS);
+		reply[2] = 1;
+		writeV3S16(&reply[3], p);
+		// Send as reliable
+		m_con.Send(PEER_ID_SERVER, 1, reply, true);
+
+#if 0
+		/*
+			Remove from history
+		*/
+		{
+			JMutexAutoLock lock(m_fetchblock_mutex);
+			
+			if(m_fetchblock_history.find(p) != NULL)
+			{
+				m_fetchblock_history.remove(p);
+			}
+			else
+			{
+				/*
+					Acknowledge block.
+				*/
+				/*
+					[0] u16 command
+					[2] u8 count
+					[3] v3s16 pos_0
+					[3+6] v3s16 pos_1
+					...
+				*/
+				u32 replysize = 2+1+6;
+				SharedBuffer<u8> reply(replysize);
+				writeU16(&reply[0], TOSERVER_GOTBLOCKS);
+				reply[2] = 1;
+				writeV3S16(&reply[3], p);
+				// Send as reliable
+				m_con.Send(PEER_ID_SERVER, 1, reply, true);
+			}
+		}
+#endif
+	}
+	else
+	{
+		dout_client<<DTIME<<"WARNING: Client: Ignoring unknown command "
+				<<command<<std::endl;
+	}
+
+	return true;
+
+	} //try
+	catch(con::PeerNotFoundException &e)
+	{
+		dout_client<<DTIME<<"Client::AsyncProcessData(): Cancelling: The server"
+				" connection doesn't exist (a timeout or not yet connected?)"<<std::endl;
+		return false;
+	}
+}
+
+bool Client::AsyncProcessData()
+{
+	LazyMeshUpdater mesh_updater(&m_env);
+	for(;;)
+	{
+		bool r = AsyncProcessPacket(mesh_updater);
+		if(r == false)
+			break;
+	}
+	return false;
+}
+
+void Client::Send(u16 channelnum, SharedBuffer<u8> data, bool reliable)
+{
+	JMutexAutoLock lock(m_con_mutex);
+	m_con.Send(PEER_ID_SERVER, channelnum, data, reliable);
+}
+
+#if 0
+void Client::fetchBlock(v3s16 p, u8 flags)
+{
+	if(connectedAndInitialized() == false)
+		throw ClientNotReadyException
+		("ClientNotReadyException: connectedAndInitialized() == false");
+
+	/*dstream<<"Client::fetchBlock(): Sending GETBLOCK for ("
+			<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
+
+	JMutexAutoLock conlock(m_con_mutex);
+
+	SharedBuffer<u8> data(9);
+	writeU16(&data[0], TOSERVER_GETBLOCK);
+	writeS16(&data[2], p.X);
+	writeS16(&data[4], p.Y);
+	writeS16(&data[6], p.Z);
+	writeU8(&data[8], flags);
+	m_con.Send(PEER_ID_SERVER, 1, data, true);
+}
+
+/*
+	Calls fetchBlock() on some nearby missing blocks.
+
+	Returns when any of various network load indicators go over limit.
+
+	Does nearly the same thing as the old updateChangedVisibleArea()
+*/
+void Client::fetchBlocks()
+{
+	if(connectedAndInitialized() == false)
+		throw ClientNotReadyException
+		("ClientNotReadyException: connectedAndInitialized() == false");
+}
+#endif
+
+bool Client::isFetchingBlocks()
+{
+	JMutexAutoLock conlock(m_con_mutex);
+	con::Peer *peer = m_con.GetPeerNoEx(PEER_ID_SERVER);
+	// Not really fetching but can't fetch more.
+	if(peer == NULL) return true;
+
+	con::Channel *channel = &(peer->channels[1]);
+	/*
+		NOTE: Channel 0 should always be used for fetching blocks,
+		      and for nothing else.
+	*/
+	if(channel->incoming_reliables.size() > 0)
+		return true;
+	if(channel->outgoing_reliables.size() > 0)
+		return true;
+	return false;
+}
+
+IncomingPacket Client::getPacket()
+{
+	JMutexAutoLock lock(m_incoming_queue_mutex);
+	
+	core::list<IncomingPacket>::Iterator i;
+	// Refer to first one
+	i = m_incoming_queue.begin();
+
+	// If queue is empty, return empty packet
+	if(i == m_incoming_queue.end()){
+		IncomingPacket packet;
+		return packet;
+	}
+	
+	// Pop out first packet and return it
+	IncomingPacket packet = *i;
+	m_incoming_queue.erase(i);
+	return packet;
+}
+
+#if 0
+void Client::removeNode(v3s16 nodepos)
+{
+	if(connectedAndInitialized() == false){
+		dout_client<<DTIME<<"Client::removeNode() cancelled (not connected)"
+				<<std::endl;
+		return;
+	}
+	
+	// Test that the position exists
+	try{
+		JMutexAutoLock envlock(m_env_mutex);
+		m_env.getMap().getNode(nodepos);
+	}
+	catch(InvalidPositionException &e)
+	{
+		dout_client<<DTIME<<"Client::removeNode() cancelled (doesn't exist)"
+				<<std::endl;
+		return;
+	}
+
+	SharedBuffer<u8> data(8);
+	writeU16(&data[0], TOSERVER_REMOVENODE);
+	writeS16(&data[2], nodepos.X);
+	writeS16(&data[4], nodepos.Y);
+	writeS16(&data[6], nodepos.Z);
+	Send(0, data, true);
+}
+
+void Client::addNodeFromInventory(v3s16 nodepos, u16 i)
+{
+	if(connectedAndInitialized() == false){
+		dout_client<<DTIME<<"Client::addNodeFromInventory() "
+				"cancelled (not connected)"
+				<<std::endl;
+		return;
+	}
+	
+	// Test that the position exists
+	try{
+		JMutexAutoLock envlock(m_env_mutex);
+		m_env.getMap().getNode(nodepos);
+	}
+	catch(InvalidPositionException &e)
+	{
+		dout_client<<DTIME<<"Client::addNode() cancelled (doesn't exist)"
+				<<std::endl;
+		return;
+	}
+
+	//u8 ser_version = m_server_ser_ver;
+
+	// SUGGESTION: The validity of the operation could be checked here too
+
+	u8 datasize = 2 + 6 + 2;
+	SharedBuffer<u8> data(datasize);
+	writeU16(&data[0], TOSERVER_ADDNODE_FROM_INVENTORY);
+	writeS16(&data[2], nodepos.X);
+	writeS16(&data[4], nodepos.Y);
+	writeS16(&data[6], nodepos.Z);
+	writeU16(&data[8], i);
+	Send(0, data, true);
+}
+#endif
+
+void Client::clickGround(u8 button, v3s16 nodepos_undersurface,
+		v3s16 nodepos_oversurface, u16 item)
+{
+	if(connectedAndInitialized() == false){
+		dout_client<<DTIME<<"Client::clickGround() "
+				"cancelled (not connected)"
+				<<std::endl;
+		return;
+	}
+	
+	/*
+		length: 19
+		[0] u16 command
+		[2] u8 button (0=left, 1=right)
+		[3] v3s16 nodepos_undersurface
+		[9] v3s16 nodepos_abovesurface
+		[15] u16 item
+	*/
+	u8 datasize = 2 + 1 + 6 + 6 + 2;
+	SharedBuffer<u8> data(datasize);
+	writeU16(&data[0], TOSERVER_CLICK_GROUND);
+	writeU8(&data[2], button);
+	writeV3S16(&data[3], nodepos_undersurface);
+	writeV3S16(&data[9], nodepos_oversurface);
+	writeU16(&data[15], item);
+	Send(0, data, true);
+}
+
+void Client::clickObject(u8 button, v3s16 blockpos, s16 id, u16 item)
+{
+	if(connectedAndInitialized() == false){
+		dout_client<<DTIME<<"Client::clickObject() "
+				"cancelled (not connected)"
+				<<std::endl;
+		return;
+	}
+	
+	/*
+		[0] u16 command
+		[2] u8 button (0=left, 1=right)
+		[3] v3s16 block
+		[9] s16 id
+		[11] u16 item
+	*/
+	u8 datasize = 2 + 1 + 6 + 2 + 2;
+	SharedBuffer<u8> data(datasize);
+	writeU16(&data[0], TOSERVER_CLICK_OBJECT);
+	writeU8(&data[2], button);
+	writeV3S16(&data[3], blockpos);
+	writeS16(&data[9], id);
+	writeU16(&data[11], item);
+	Send(0, data, true);
+}
+
+void Client::release(u8 button)
+{
+	//TODO
+}
+
+void Client::sendSignText(v3s16 blockpos, s16 id, std::string text)
+{
+	/*
+		u16 command
+		v3s16 blockpos
+		s16 id
+		u16 textlen
+		textdata
+	*/
+	std::ostringstream os(std::ios_base::binary);
+	u8 buf[12];
+	
+	// Write command
+	writeU16(buf, TOSERVER_SIGNTEXT);
+	os.write((char*)buf, 2);
+	
+	// Write blockpos
+	writeV3S16(buf, blockpos);
+	os.write((char*)buf, 6);
+
+	// Write id
+	writeS16(buf, id);
+	os.write((char*)buf, 2);
+
+	u16 textlen = text.size();
+	// Write text length
+	writeS16(buf, textlen);
+	os.write((char*)buf, 2);
+
+	// Write text
+	os.write((char*)text.c_str(), textlen);
+	
+	// Make data buffer
+	std::string s = os.str();
+	SharedBuffer<u8> data((u8*)s.c_str(), s.size());
+	// Send as reliable
+	Send(0, data, true);
+}
+
+void Client::sendPlayerPos()
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	
+	Player *myplayer = m_env.getLocalPlayer();
+	if(myplayer == NULL)
+		return;
+	
+	u16 our_peer_id;
+	{
+		JMutexAutoLock lock(m_con_mutex);
+		our_peer_id = m_con.GetPeerID();
+	}
+	
+	// Set peer id if not set already
+	if(myplayer->peer_id == PEER_ID_NEW)
+		myplayer->peer_id = our_peer_id;
+	// Check that an existing peer_id is the same as the connection's
+	assert(myplayer->peer_id == our_peer_id);
+	
+	v3f pf = myplayer->getPosition();
+	v3s32 position(pf.X*100, pf.Y*100, pf.Z*100);
+	v3f sf = myplayer->getSpeed();
+	v3s32 speed(sf.X*100, sf.Y*100, sf.Z*100);
+	s32 pitch = myplayer->getPitch() * 100;
+	s32 yaw = myplayer->getYaw() * 100;
+
+	/*
+		Format:
+		[0] u16 command
+		[2] v3s32 position*100
+		[2+12] v3s32 speed*100
+		[2+12+12] s32 pitch*100
+		[2+12+12+4] s32 yaw*100
+	*/
+
+	SharedBuffer<u8> data(2+12+12+4+4);
+	writeU16(&data[0], TOSERVER_PLAYERPOS);
+	writeV3S32(&data[2], position);
+	writeV3S32(&data[2+12], speed);
+	writeS32(&data[2+12+12], pitch);
+	writeS32(&data[2+12+12+4], yaw);
+
+	// Send as unreliable
+	Send(0, data, false);
+}
+
+
+void Client::updateCamera(v3f pos, v3f dir)
+{
+	m_env.getMap().updateCamera(pos, dir);
+	camera_position = pos;
+	camera_direction = dir;
+}
+
+MapNode Client::getNode(v3s16 p)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	return m_env.getMap().getNode(p);
+}
+
+/*f32 Client::getGroundHeight(v2s16 p)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	return m_env.getMap().getGroundHeight(p);
+}*/
+
+bool Client::isNodeUnderground(v3s16 p)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	return m_env.getMap().isNodeUnderground(p);
+}
+
+/*Player * Client::getLocalPlayer()
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	return m_env.getLocalPlayer();
+}*/
+
+/*core::list<Player*> Client::getPlayers()
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	return m_env.getPlayers();
+}*/
+
+v3f Client::getPlayerPosition()
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	LocalPlayer *player = m_env.getLocalPlayer();
+	assert(player != NULL);
+	return player->getPosition();
+}
+
+void Client::setPlayerControl(PlayerControl &control)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	LocalPlayer *player = m_env.getLocalPlayer();
+	assert(player != NULL);
+	player->control = control;
+}
+
+// Returns true if the inventory of the local player has been
+// updated from the server. If it is true, it is set to false.
+bool Client::getLocalInventoryUpdated()
+{
+	// m_inventory_updated is behind envlock
+	JMutexAutoLock envlock(m_env_mutex);
+	bool updated = m_inventory_updated;
+	m_inventory_updated = false;
+	return updated;
+}
+
+// Copies the inventory of the local player to parameter
+void Client::getLocalInventory(Inventory &dst)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+	Player *player = m_env.getLocalPlayer();
+	assert(player != NULL);
+	dst = player->inventory;
+}
+
+MapBlockObject * Client::getSelectedObject(
+		f32 max_d,
+		v3f from_pos_f_on_map,
+		core::line3d<f32> shootline_on_map
+	)
+{
+	JMutexAutoLock envlock(m_env_mutex);
+
+	core::array<DistanceSortedObject> objects;
+
+	for(core::map<v3s16, bool>::Iterator
+			i = m_active_blocks.getIterator();
+			i.atEnd() == false; i++)
+	{
+		v3s16 p = i.getNode()->getKey();
+
+		MapBlock *block = NULL;
+		try
+		{
+			block = m_env.getMap().getBlockNoCreate(p);
+		}
+		catch(InvalidPositionException &e)
+		{
+			continue;
+		}
+
+		// Calculate from_pos relative to block
+		v3s16 block_pos_i_on_map = block->getPosRelative();
+		v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map);
+		v3f from_pos_f_on_block = from_pos_f_on_map - block_pos_f_on_map;
+
+		block->getObjects(from_pos_f_on_block, max_d, objects);
+	}
+
+	//dstream<<"Collected "<<objects.size()<<" nearby objects"<<std::endl;
+	
+	// Sort them.
+	// After this, the closest object is the first in the array.
+	objects.sort();
+
+	for(u32 i=0; i<objects.size(); i++)
+	{
+		MapBlockObject *obj = objects[i].obj;
+		MapBlock *block = obj->getBlock();
+
+		// Calculate shootline relative to block
+		v3s16 block_pos_i_on_map = block->getPosRelative();
+		v3f block_pos_f_on_map = intToFloat(block_pos_i_on_map);
+		core::line3d<f32> shootline_on_block(
+				shootline_on_map.start - block_pos_f_on_map,
+				shootline_on_map.end - block_pos_f_on_map
+		);
+
+		if(obj->isSelected(shootline_on_block))
+		{
+			//dstream<<"Returning selected object"<<std::endl;
+			return obj;
+		}
+	}
+
+	//dstream<<"No object selected; returning NULL."<<std::endl;
+	return NULL;
+}
+
+void Client::printDebugInfo(std::ostream &os)
+{
+	//JMutexAutoLock lock1(m_fetchblock_mutex);
+	JMutexAutoLock lock2(m_incoming_queue_mutex);
+
+	os<<"m_incoming_queue.getSize()="<<m_incoming_queue.getSize()
+		//<<", m_fetchblock_history.size()="<<m_fetchblock_history.size()
+		//<<", m_opt_not_found_history.size()="<<m_opt_not_found_history.size()
+		<<std::endl;
+}
+	
+