1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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
*/
/* copyright --> */
#ifndef _D_PEER_CONNECTION_H_
#define _D_PEER_CONNECTION_H_
#include "Option.h"
#include "Socket.h"
#include "Logger.h"
#include "TorrentMan.h"
#include "PeerMessage.h"
#include "HandshakeMessage.h"
#include "common.h"
// we assume maximum length of incoming message is "piece" message with 16KB
// data. Messages beyond that size are dropped.
#define MAX_PAYLOAD_LEN (9+16*1024)
class PeerConnection {
private:
int cuid;
const Socket* socket;
const Option* option;
const Logger* logger;
char resbuf[MAX_PAYLOAD_LEN];
int resbufLength;
int currentPayloadLength;
char lenbuf[4];
int lenbufLength;
public:
PeerConnection(int cuid, const Socket* socket, const Option* op);
~PeerConnection();
// Returns the number of bytes written
int sendMessage(const char* msg, int length);
bool receiveMessage(char* msg, int& length);
/**
* Returns true if a handshake message is fully received, otherwise returns
* false.
* In both cases, 'msg' is filled with received bytes and the filled length
* is assigned to 'length'.
*/
bool receiveHandshake(char* msg, int& length);
};
#endif // _D_PEER_CONNECTION_H_
|
