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
|
import xmlrpclib
import socket
import traceback
import pygtk
pygtk.require('2.0')
import gobject
import network
from MostlyReliablePipe import MostlyReliablePipe
class Stream(object):
def __init__(self, service, group):
if not service:
raise ValueError("service must be valid")
self._service = service
self._group = group
self._owner_nick_name = self._group.get_owner().get_nick_name()
self._port = self._service.get_port()
self._address = self._service.get_address()
self._callback = None
def new_from_service(service, group):
if service.is_multicast():
return MulticastStream(service, group)
else:
return UnicastStream(service, group)
new_from_service = staticmethod(new_from_service)
def set_data_listener(self, callback):
self._callback = callback
def recv(self, nick_name, data):
if nick_name != self._owner_nick_name:
if self._callback:
self._callback(self._group.get_buddy(nick_name), data)
class UnicastStreamWriter(object):
def __init__(self, stream, service, owner_nick_name):
# set up the writer
if not service:
raise ValueError("service must be valid")
self._service = service
self._owner_nick_name = owner_nick_name
self._address = self._service.get_address()
self._port = self._service.get_port()
self._xmlrpc_addr = "http://%s:%d" % (self._address, self._port)
self._writer = network.GlibServerProxy(self._xmlrpc_addr)
def write(self, xmlrpc_data):
"""Write some data to the default endpoint of this pipe on the remote server."""
try:
self._writer.message(None, None, self._owner_nick_name, xmlrpc_data)
return True
except (socket.error, xmlrpclib.Fault, xmlrpclib.ProtocolError):
traceback.print_exc()
return False
def custom_request(self, method_name, request_cb, user_data, *args):
"""Call a custom XML-RPC method on the remote server."""
try:
method = getattr(self._writer, method_name)
method(request_cb, user_data, *args)
return True
except (socket.error, xmlrpclib.Fault, xmlrpclib.ProtocolError):
traceback.print_exc()
return False
class UnicastStream(Stream):
def __init__(self, service, group):
Stream.__init__(self, service, group)
self._setup()
def _setup(self):
# Set up the reader
started = False
tries = 10
port = self._service.get_port()
self._reader = None
while not started and tries > 0:
try:
self._reader = network.GlibXMLRPCServer(("", port))
self._reader.register_function(self._message, "message")
started = True
except(socket.error):
port = port + 1
tries = tries - 1
self._service.set_port(port)
def _message(self, nick_name, message):
"""Called by the XMLRPC server when network data arrives."""
self.recv(nick_name, message)
return True
def register_handler(self, handler, name):
if name == "message":
raise ValueError("Handler name 'message' is a reserved handler.")
self._reader.register_function(handler, name)
def new_writer(self, service):
return UnicastStreamWriter(self, service, self._owner_nick_name)
class MulticastStream(Stream):
def __init__(self, service, group):
Stream.__init__(self, service, group)
self._address = self._service.get_group_address()
self._setup()
def _setup(self):
self._pipe = MostlyReliablePipe('', self._address, self._port, self._recv_data_cb)
self._pipe.start()
def write(self, data):
self._pipe.send(self._owner_nick_name + " |**| " + data)
def _recv_data_cb(self, addr, data, user_data=None):
[ nick_name, data ] = data.split(" |**| ", 2)
self.recv(nick_name, data)
def new_writer(self, service=None):
return self
|
