www.pudn.com > DCPlusPlus-src.zip > ConnectionManager.h

/*  
 * Copyright (C) 2001-2004 Jacek Sieka, j_s at telia com 
 * 
 * This program 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. 
 * 
 * This program 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 this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
 */ 
 
#if !defined(AFX_ConnectionManager_H__675A2F66_AFE6_4A15_8386_6B6FD579D5FF__INCLUDED_) 
#define AFX_ConnectionManager_H__675A2F66_AFE6_4A15_8386_6B6FD579D5FF__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#include "TimerManager.h" 
 
#include "ServerSocket.h" 
#include "UserConnection.h" 
#include "User.h" 
#include "CriticalSection.h" 
#include "Singleton.h" 
 
#include "ConnectionManagerListener.h" 
 
class ConnectionQueueItem { 
public: 
	typedef ConnectionQueueItem* Ptr; 
	typedef vector List; 
	typedef List::iterator Iter; 
	 
	enum State { 
		CONNECTING,					// In pendingDown, recently sent request to connect 
		WAITING,					// In pendingDown, waiting to send request to connect 
		NO_DOWNLOAD_SLOTS,			// In pendingDown, but not needed right now 
		IDLE,						// In the download pool 
	}; 
 
	ConnectionQueueItem(const User::Ptr& aUser) : state(WAITING), connection(NULL), lastAttempt(0), user(aUser) { }; 
	 
	User::Ptr& getUser() { return user; }; 
	 
	GETSET(State, state, State); 
	GETSET(UserConnection*, connection, Connection); 
	GETSET(u_int32_t, lastAttempt, LastAttempt); 
private: 
	User::Ptr user; 
}; 
// Comparing with a user... 
inline bool operator==(ConnectionQueueItem::Ptr ptr, const User::Ptr& aUser) { return ptr->getUser() == aUser; }; 
 
class ConnectionManager : public Speaker,  
	public UserConnectionListener, ServerSocketListener, TimerManagerListener,  
	public Singleton 
{ 
public: 
	void connect(const string& aServer, short aPort, const string& aNick); 
	void getDownloadConnection(const User::Ptr& aUser); 
	void putDownloadConnection(UserConnection* aSource, bool reuse = false); 
	void putUploadConnection(UserConnection* aSource); 
	 
	void removeConnection(const User::Ptr& aUser, int isDownload); 
	void shutdown();	 
	/** 
	 * Set this ConnectionManager to listen at a different port. 
	 */ 
	void setPort(short aPort) throw(SocketException) { 
		socket.waitForConnections(aPort); 
	} 
	void disconnect() throw() { 
		socket.disconnect(); 
	} 
 
	// Ugly trick to use windows messages... 
	ServerSocket& getServerSocket() { 
		return socket; 
	} 
 
private: 
	CriticalSection cs; 
 
	/** Pending connections, i e users we're trying to connect to */ 
	ConnectionQueueItem::List pendingDown; 
	/** Download connection pool, pool of active connections to be used for downloading */ 
	ConnectionQueueItem::List downPool; 
	/** Connections that are currently being used by the Up/DownloadManager */ 
	ConnectionQueueItem::List active; 
 
	User::List pendingAdd; 
	UserConnection::List pendingDelete; 
	/** All active connections */ 
	UserConnection::List userConnections; 
 
	ServerSocket socket; 
	StringList features; 
 
	u_int32_t floodCounter; 
 
	bool shuttingDown; 
 
	friend class Singleton; 
	ConnectionManager(); 
 
	virtual ~ConnectionManager() { shutdown(); }; 
	 
	UserConnection* getConnection() throw(SocketException) { 
		UserConnection* uc = new UserConnection(); 
		uc->addListener(this); 
		{ 
			Lock l(cs); 
			userConnections.push_back(uc); 
		} 
		return uc; 
	} 
	void putConnection(UserConnection* aConn); 
 
	// ServerSocketListener 
	virtual void on(ServerSocketListener::IncomingConnection) throw(); 
 
	// UserConnectionListener 
	virtual void on(Connected, UserConnection*) throw(); 
	virtual void on(Failed, UserConnection*, const string&) throw(); 
	virtual void on(CLock, UserConnection*, const string&, const string&) throw(); 
	virtual void on(Key, UserConnection*, const string&) throw(); 
	virtual void on(Direction, UserConnection*, const string&, const string&) throw(); 
	virtual void on(MyNick, UserConnection*, const string&) throw(); 
	virtual void on(Supports, UserConnection*, const StringList&) throw(); 
 
	// TimerManagerListener 
	virtual void on(TimerManagerListener::Second, u_int32_t aTick) throw();	 
	virtual void on(TimerManagerListener::Minute, u_int32_t aTick) throw();	 
 
}; 
 
#endif // !defined(AFX_ConnectionManager_H__675A2F66_AFE6_4A15_8386_6B6FD579D5FF__INCLUDED_) 
 
/** 
 * @file 
 * $Id: ConnectionManager.h,v 1.57 2004/09/06 12:32:41 arnetheduck Exp $ 
 */