本文實例講述了Python實現簡單的代理服務器。分享給大家供大家參考。具體如下：
具備簡單的管理功能，運行后 telnet localhost 9000 端口可以進行管理主要功能就是做包轉發，如果有一個橋服務器，可以用來外網訪問內網用，還是很管用的
|
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
|
#/bin/env python #coding:utf-8 import socket,select,sys,time import thread s_list = [] def loop(cs,addr,s_ip,s_port): print '%s %d connected.' % addr ts = socket.socket() try: ts.connect((s_ip,s_port)) except: cs.close() print '%s %d closed.' % addr sys.exit(0) while True: rl,wl,xl = select.select([cs.fileno(),ts.fileno()],[],[cs.fileno(),ts.fileno()]) if len(xl) > 0: cs.close() ts.close() print '%s %d closed.' % addr sys.exit(0) if len(rl) > 0: if rl[0] == cs.fileno(): rs = ts ws = cs else: rs = cs ws = ts try: buffer = ws.recv(10000) if len(buffer) == 0: raise rs.send(buffer) except: rs.close() ts.close() print '%s %d closed.' % addr sys.exit(0) def mainserver(l_port,s_ip,s_port): global s_list try: ss = socket.socket() ss.bind(('0.0.0.0',l_port)) ss.listen(10) s_list.append((l_port,s_ip,s_port)) except: sys.exit(0) while True: cs,addr = ss.accept() thread.start_new_thread(loop,(cs,addr,s_ip,s_port)) def manager(l_port): global start,s_list ss = socket.socket() ss.bind(('0.0.0.0',l_port)) ss.listen(10) while True: cs,addr = ss.accept() cs.send("""trans server 1.0\r\ntype 'help' to get help\r\n""") buffer = '' while True: buf = cs.recv(10000) if len(buf) == 0: cs.close() break if buf[-1] not in ('\r','\n'): buffer += buf continue buffer += buf cmd = buffer.strip() buffer = '' if cmd == 'exit': cs.close() break elif cmd == 'stop': start = 0 cs.close() sys.exit(0) elif cmd == 'list': b = '' for l in s_list: b += '%4d %s:%d\r\n' % l if len(b) > 0: cs.send(b) elif cmd in ('help','?'): cs.send("""-------------------------------------------\rexit\r exit telnet\r start localport serverip:serverport\r start a new server\r list\r list all server\r -------------------------------------------\r """) else: cmds = cmd.split(" ",1) if len(cmds) > 1 and cmds[0] == 'start': args = cmds[1].strip().split(" ",1) if len(args) != 2: cs.send('start localport serverip:serverport\r\n') continue arg = args[1].split(":",1) if len(arg) != 2: cs.send('start localport serverip:serverport\r\n') continue try: l_port = int(args[0]) s_ip = arg[0] s_port = int(arg[1]) except: cs.send('start localport serverip:serverport\r\n') continue thread.start_new_thread(mainserver,(l_port,s_ip,s_port)) cs.send('start OK!\r\n') else: cs.send('no command [%s]\r\n' % cmd) continuedef main(): global start if len(sys.argv) == 3: try: l_port = int(sys.argv[1]) s_ip,s_port = sys.argv[2].split(":") s_port = int(s_port) thread.start_new_thread(mainserver,(l_port,s_ip,s_port)) except: pass start = 1 thread.start_new_thread(manager,(9000,)) while start: time.sleep(1) if __name__ == '__main__': start = 0 main() |
希望本文所述對大家的Python程序設計有所幫助。
