81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef _D_PEER_CONNECTION_H_
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#define _D_PEER_CONNECTION_H_
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#include "Option.h"
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#include "Socket.h"
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#include "Logger.h"
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#include "common.h"
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// we assume maximum length of incoming message is "piece" message with 16KB
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// data. Messages beyond that size are dropped.
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#define MAX_PAYLOAD_LEN (9+16*1024)
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class PeerConnection {
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private:
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int32_t cuid;
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SocketHandle socket;
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const Option* option;
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const Logger* logger;
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char resbuf[MAX_PAYLOAD_LEN];
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int32_t resbufLength;
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int32_t currentPayloadLength;
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unsigned char lenbuf[4];
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int32_t lenbufLength;
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public:
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PeerConnection(int32_t cuid, const SocketHandle& socket, const Option* op);
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~PeerConnection();
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// Returns the number of bytes written
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int32_t sendMessage(const unsigned char* data, int32_t dataLength);
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bool receiveMessage(unsigned char* data, int32_t& dataLength);
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/**
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* Returns true if a handshake message is fully received, otherwise returns
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* false.
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* In both cases, 'msg' is filled with received bytes and the filled length
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* is assigned to 'length'.
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*/
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bool receiveHandshake(unsigned char* data, int32_t& dataLength);
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};
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typedef SharedHandle<PeerConnection> PeerConnectionHandle;
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typedef WeakHandle<PeerConnection> PeerConnectionWeakHandle;
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#endif // _D_PEER_CONNECTION_H_
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