130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
/*! \file pistreampacker.h
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* \ingroup IO-Utils
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* \~\brief
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* \~english Simple packet wrap aroud any PIIODevice
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* \~russian Простая фрагментация пакетов, использует любой PIIODevice
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*/
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/*
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PIP - Platform Independent Primitives
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Simple packet wrap aroud any PIIODevice
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Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PISTREAMPACKER_H
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#define PISTREAMPACKER_H
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#include "pip_io_utils_export.h"
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#include "piobject.h"
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#include "piethutilbase.h"
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class PIIODevice;
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class PIP_IO_UTILS_EXPORT PIStreamPacker: public PIObject, public PIEthUtilBase {
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PIOBJECT(PIStreamPacker)
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public:
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//! Contructs packer and try to assign \"dev\"
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PIStreamPacker(PIIODevice * dev = 0);
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//! Set maximum size of single packet
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void setMaxPacketSize(int max_size) {max_packet_size = max_size;}
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//! Returns maximum size of single packet, default 1400 bytes
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int maxPacketSize() const {return max_packet_size;}
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//! Set packet sinature
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void setPacketSign(ushort sign_) {packet_sign = sign_;}
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//! Returns packet sinature, default 0xAFBE
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ushort packetSign() const {return packet_sign;}
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//! Set receive aggressive optimization. If yes then %PIStreamPacker doesn`t
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//! check every byte in incoming stream but check only begin of each read()
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//! result. Default is \b true.
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void setaAggressiveOptimization(bool yes) {aggressive_optimization = yes;}
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//! Returns aggressive optimization
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bool aggressiveOptimization() const {return aggressive_optimization;}
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bool cryptFragmentationEnabled() const {return crypt_frag;}
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void setCryptFragmentationEnabled(bool on) {crypt_frag = on;}
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int cryptFragmentationSize() const {return crypt_frag_size;}
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void setCryptFragmentationSize(int size_) {crypt_frag_size = size_;}
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bool cryptSizeEnabled() const {return crypt_size;}
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void setCryptSizeEnabled(bool on);
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void clear();
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//! Prepare data for send and raise \a sendRequest() events
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void send(const PIByteArray & data);
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//! Receive data part. If packet is ready, raise \a packetReceiveEvent() event
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//! and \a packetReceived() virtual method
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void received(const PIByteArray & data);
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EVENT_HANDLER2(void, received, const uchar * , readed, ssize_t, size);
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//! Connect \"dev\" \a PIIODevice::threadedReadEvent() event to \a received() handler
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//! and \a sendRequest() event to \"dev\" \a PIIODevice::write() handler
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void assignDevice(PIIODevice * dev);
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EVENT1(packetReceiveEvent, PIByteArray &, data);
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EVENT1(sendRequest, PIByteArray, data);
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//! \handlers
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//! \{
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//! \fn void received(uchar * readed, int size)
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//! \brief Handler to receive data. \a PIIODevice::threadedReadEvent()
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//! can be connected to this handler
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//! \}
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//! \events
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//! \{
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//! \fn void packetReceiveEvent(PIByteArray data)
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//! \brief Raise on packet successfully received
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//! \fn void sendRequest(PIByteArray data)
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//! \brief Raise from \a send() function. This data should
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//! be directly sended to your device. You can
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//! connect this event to \a PIIODevice::write() handler
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//! \}
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protected:
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//! Packet successfully received, by default does nothing
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virtual void packetReceived(PIByteArray data) {}
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private:
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PIByteArray stream, packet;
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bool crypt_frag, crypt_size, aggressive_optimization;
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int packet_size, crypt_frag_size;
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ushort packet_sign;
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int max_packet_size, size_crypted_size;
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mutable PIMutex prog_s_mutex, prog_r_mutex;
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};
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#endif // PISTREAMPACKER_H
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