File: peer.h

package info (click to toggle)
ctorrent 1.3.4-dnh3.2-1%2Blenny1
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 1,060 kB
  • ctags: 983
  • sloc: cpp: 9,870; sh: 675; ansic: 350; makefile: 49
file content (216 lines) | stat: -rw-r--r-- 6,347 bytes parent folder | download
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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
#ifndef PEER_H
#define PEER_H

#include "./def.h"

#ifdef WINDOWS
#include <Winsock2.h>
#else
#include <unistd.h>
#include <stdio.h>   // autoconf manual: Darwin + others prereq for stdlib.h
#include <stdlib.h>  // autoconf manual: Darwin prereq for sys/socket.h
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#endif

#include <inttypes.h>
#include <time.h>
#include <string.h>

#include "btrequest.h"
#include "btstream.h"
#include "bitfield.h"
#include "rate.h"
#include "btconfig.h"

#define P_CONNECTING (unsigned char) 0		// connecting
#define P_HANDSHAKE  (unsigned char) 1		// handshaking
#define P_SUCCESS (unsigned char) 2		// successful
#define P_FAILED (unsigned char) 3		// failed

typedef struct _btstatus{
  unsigned char remote_choked:1;
  unsigned char remote_interested:1;
  unsigned char local_choked:1;
  unsigned char local_interested:1;

  unsigned char reserved:4;		/* unused */
}BTSTATUS;

int TextPeerID(const unsigned char *peerid, char *txtid);

class btBasic
{
protected:
  Rate rate_dl;
  Rate rate_ul;

private:
  struct sockaddr_in m_sin;

public:
  //IPַغ
  int IpEquiv(struct sockaddr_in addr);
  void SetIp(struct sockaddr_in addr);
  void SetAddress(struct sockaddr_in addr);
  void GetAddress(struct sockaddr_in *psin) const {
    memcpy(psin,&m_sin,sizeof(struct sockaddr_in));
  }

  // غ
  const Rate &GetDLRate() const { return rate_dl; }
  const Rate &GetULRate() const { return rate_ul; }
  void SetDLRate(Rate rate) { rate_dl = rate; StopDLTimer(); }
  void SetULRate(Rate rate) { rate_ul = rate; StopULTimer(); }
  
  uint64_t TotalDL() const { return rate_dl.Count(); }
  uint64_t TotalUL() const { return rate_ul.Count(); }

  void DataRecved(size_t nby) { rate_dl.CountAdd(nby); }
  void DataSended(size_t nby, double timestamp) { rate_ul.CountAdd(nby);
    rate_ul.RateAdd(nby, (size_t)cfg_max_bandwidth_up, timestamp); }

  size_t CurrentDL() { return rate_dl.CurrentRate(); }
  size_t CurrentUL() { return rate_ul.CurrentRate(); }
  size_t RateDL() { return rate_dl.RateMeasure(); }
  size_t RateUL() { return rate_ul.RateMeasure(); }

  void StartDLTimer() { rate_dl.StartTimer(); }
  void StartULTimer() { rate_ul.StartTimer(); }
  void StopDLTimer() { rate_dl.StopTimer(); }
  void StopULTimer() { rate_ul.StopTimer(); }
  void ResetDLTimer() { rate_dl.Reset(); }
  void ResetULTimer() { rate_ul.Reset(); }

  double LastSendTime() const { return rate_ul.LastRealtime(); }
  double LastRecvTime() const { return rate_dl.LastRealtime(); }
  size_t LastSizeSent() const { return rate_ul.LastSize(); }
  size_t LastSizeRecv() const { return rate_dl.LastSize(); }

  Rate *DLRatePtr() { return &rate_dl; }
  Rate *ULRatePtr() { return &rate_ul; }

  double LateDL() const { return rate_dl.Late(); }
  double LateUL() const { return rate_ul.Late(); }
  int OntimeDL() const { return rate_dl.Ontime(); }
  int OntimeUL() const { return rate_ul.Ontime(); }
  void OntimeDL(int yn) { rate_dl.Ontime(yn); }
  void OntimeUL(int yn) { rate_ul.Ontime(yn); }
};

class btPeer:public btBasic
{
 private:
  time_t m_last_timestamp, m_unchoke_timestamp;

  unsigned char m_f_keepalive:1;
  unsigned char m_status:4;
  unsigned char m_bad_health:1;
  unsigned char m_standby:1;
  unsigned char m_want_again:1;  // attempt reconnect if lost

  unsigned char m_connect:1;     // we initiated the connection
  unsigned char m_retried:1;     // already retried connecting
  unsigned char m_connect_seed:1; // connected while I am seed
  unsigned char m_requested:1;   // received a request since unchoke
  unsigned char m_prefetch_completion:2; // prefetched for piece completion
  unsigned char m_reserved:2;

  BTSTATUS m_state;

  size_t m_cached_idx;
  size_t m_err_count;
  size_t m_req_send;  // target number of outstanding requests
  size_t m_req_out;   // actual number of outstanding requests
  size_t m_latency;
  size_t m_prev_dlrate;
  time_t m_latency_timestamp;
  time_t m_health_time, m_receive_time, m_next_send_time;
  char m_lastmsg;
  time_t m_choketime;
  time_t m_prefetch_time;
  time_t m_cancel_time;

  static btPeer *g_next_up, *g_next_dn;
  static unsigned char g_defer_up;
  
  int PieceDeliver(size_t mlen);
  int ReportComplete(size_t idx);
  int RequestCheck();
  int SendRequest();
  int CancelPiece();
  int CancelRequest(PSLICE ps);
  int ReponseSlice();
  int RequestPiece();
  int MsgDeliver();
  int CouldReponseSlice();
  int RequestSlice(size_t idx,size_t off,size_t len);

 public:
  unsigned char id[PEER_ID_LEN];
  BitField bitfield;
  btStream stream;
  RequestQueue request_q;
  RequestQueue reponse_q;

  btPeer();

  void CopyStats(btPeer *peer);

  int RecvModule();
  int SendModule();
  int HealthCheck();
  int CheckSendStatus();

  time_t SetLastTimestamp() { return time(&m_last_timestamp); }
  time_t GetLastTimestamp() const { return m_last_timestamp; }
  time_t SetLastUnchokeTime() { return time(&m_unchoke_timestamp); }
  time_t GetLastUnchokeTime() const { return m_unchoke_timestamp; }

  int Is_Remote_Interested() const { return m_state.remote_interested ? 1 : 0; }
  int Is_Remote_UnChoked() const { return m_state.remote_choked ? 0 : 1; }
  int Is_Local_Interested() const { return m_state.local_interested ? 1 : 0;}
  int Is_Local_UnChoked() const { return m_state.local_choked ? 0 : 1; }
  int SetLocal(unsigned char s);

  int IsEmpty() const;

  int CancelSliceRequest(size_t idx, size_t off, size_t len);
  int CancelPiece(size_t idx);
  
  void SetStatus(unsigned char s){ m_status = s; }
  unsigned char GetStatus() const { return m_status; }
  int NeedWrite(int limited);
  int NeedRead(int limited);

  
  void CloseConnection();
  int CanReconnect() const { return (m_connect && m_want_again && !m_retried) ? 1 : 0; }
  int WantAgain() const { return m_want_again ? 1 : 0; }
  void DontWantAgain() { m_want_again = 0; }
  void SetConnect() { m_connect = 1; }
  void Retry() { m_retried = 1; }
  int Retried() const { return m_retried ? 1 : 0; }

  int ConnectedWhileSeed() const { return m_connect_seed ? 1 : 0; }
  
  int AreYouOK();
  int Send_ShakeInfo();
  int HandShake();

  int Need_Remote_Data() const;
  int Need_Local_Data() const;

  int PutPending();

  int NeedPrefetch() const;
  void Prefetch(time_t deadline);

  void dump();
};

extern btBasic Self;

#endif