00001 /* 00002 00003 Copyright (C) 2005-2007 by Peter Dimov. 00004 00005 This file is part of Calitko (http://www.calitko.org). 00006 00007 Calitko is free software; you can redistribute it and/or modify 00008 it under the terms of the GNU General Public License as published by 00009 the Free Software Foundation; either version 2 of the License, or 00010 (at your option) any later version. 00011 00012 Calitko is distributed in the hope that it will be useful, 00013 but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 GNU General Public License for more details. 00016 00017 You should have received a copy of the GNU General Public License 00018 along with Calitko; if not, write to the Free Software 00019 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00020 00021 */ 00022 00023 #ifndef PROTOCOLS__TRANSPORTS__CONNECTION_H 00024 #define PROTOCOLS__TRANSPORTS__CONNECTION_H 00025 00026 #include "NodeAddress.h" 00027 00028 namespace Protocols { 00029 namespace Transports { 00030 00031 class ConnectionPrivate; 00032 00034 00036 class Connection : public QIODevice 00037 { 00038 Q_OBJECT 00039 00040 public: 00041 enum State 00042 { 00043 DisconnectedState, 00044 ResolvingHostNameState, 00045 ConnectingState, 00046 ConnectedState, 00047 TimeoutState, 00048 DisconnectingState 00049 }; 00050 00051 Connection(); 00052 virtual ~Connection(); 00053 00054 void connectToNode (NodeAddress); 00055 void disconnectFromNode(); 00056 00057 State state() const; 00058 NodeAddress remoteNodeAddress() const; 00059 00060 bool isSequential() const; 00061 00062 protected: 00063 void setState (State); 00064 void setRemoteNodeAddress (const NodeAddress &); 00065 00066 virtual void doConnectToNode (const NodeAddress &) = 0; 00067 virtual void doDisconnectFromNode() = 0; 00068 00069 virtual qint64 readData (char * data, qint64 maxSize) = 0; 00070 virtual qint64 writeData (const char * data, qint64 maxSize) = 0; 00071 00072 signals: 00073 void connectionFailed(); 00074 void connectionEstablished(); 00075 //void QIODevice::readyRead(); 00076 //void QIODevice::bytesWritten (qint64); 00077 void connectionClosed(); 00078 00079 private: 00080 Connection (const Connection &); 00081 Connection & operator= (const Connection &); 00082 00083 private slots: 00084 void lookupFinished (QHostInfo); 00085 00086 private: 00087 auto_ptr <ConnectionPrivate> p; 00088 }; 00089 00090 } // namespace Transports 00091 } // namespace Protocols 00092 00093 #endif // PROTOCOLS__TRANSPORTS__CONNECTION_H