Mercurial > xib

annotate bridge.py @ 12:fd695e2b5283

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Fixed bridge mode-switching Signed-off-by: Charly COSTE <changaco@changaco.net>
author Charly COSTE <changaco@changaco.net>
date Mon, 17 Aug 2009 01:05:30 +0200
parents 79b0a7f48a3e
children 5aa4399c0530
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 # This program is free software: you can redistribute it and/or modify
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5 # it under the terms of the GNU General Public License as published by
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6 # the Free Software Foundation, either version 3 of the License, or
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7 # (at your option) any later version.
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8 #
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9 # This program is distributed in the hope that it will be useful,
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10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 # GNU General Public License for more details.
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13 #
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14 # You should have received a copy of the GNU General Public License
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15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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16
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17
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18 import muc
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19 xmpp = muc.xmpp
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20 del muc
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21 from participant import *
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22 from encoding import *
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23
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24
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25 class NoSuchParticipantException(Exception): pass
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26
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27
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28 class bridge:
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29 def __init__(self, owner_bot, xmpp_room_jid, irc_room, irc_server, irc_port=6667, mode='normal'):
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30 self.bot = owner_bot
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31 self.irc_server = irc_server
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32 self.irc_port = irc_port
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33 self.irc_room = irc_room
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34 self.participants = []
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35 self.mode = mode
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36
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37 # Join IRC room
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38 self.irc_connections_limit = -1
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39 self.irc_connection = self.bot.irc.server()
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40 self.irc_connection.nick_callback = self._irc_nick_callback
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41 self.irc_connection.bridge = self
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42 try:
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43 self.irc_connection.connect(irc_server, irc_port, self.bot.nickname)
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44 except:
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45 self.bot.error('Error: joining IRC room failed')
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46 raise
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47
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48 # Join XMPP room
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49 try:
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50 self.xmpp_room = xmpp.muc(xmpp_room_jid)
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51 self.xmpp_room.join(self.bot.xmpp_c, self.bot.nickname)
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52 except:
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53 self.bot.error('Error: joining XMPP room failed')
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54 raise
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55
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56
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57 def _irc_nick_callback(self, error):
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58 if error == None:
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59 self.irc_connection.join(self.irc_room)
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60 self.irc_connection.nick_callback = None
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61 self.bot.error('===> Debug: successfully connected on IRC side of bridge "'+str(self)+'"', debug=True)
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62 elif self.protocol != 'both':
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63 if error == 'nicknameinuse':
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64 self.bot.error('Error: "'+self.bot.nickname+'" is already used in the IRC chan of bridge "'+str(self)+'"')
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65 raise Exception('Error: "'+self.bot.nickname+'" is already used in the IRC chan of bridge "'+str(self)+'"')
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66 elif error == 'erroneusnickname':
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67 self.bot.error('Error: "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"')
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68 raise Exception('Error: "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"')
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69
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70
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71 def addParticipant(self, protocol, nickname):
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72 """Add a participant to the bridge."""
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73 if (protocol == 'irc' and nickname == self.irc_connection.get_nickname()) or (protocol == 'xmpp' and nickname == self.xmpp_room.nickname):
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74 raise Exception('Internal Error: cannot add self')
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75 try:
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76 p = self.getParticipant(nickname)
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77 if p.protocol != protocol:
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78 if protocol == 'irc':
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79 p.createDuplicateOnXMPP()
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80 elif protocol == 'xmpp':
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81 p.createDuplicateOnIRC()
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82 else:
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83 raise Exception('Internal Error: bad protocol')
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84 return
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85 except NoSuchParticipantException:
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86 pass
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87 self.bot.error('===> Debug: adding participant "'+nickname+'" from "'+protocol+'" to bridge "'+str(self)+'"', debug=True)
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88 p = participant(self, protocol, nickname)
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89 self.participants.append(p)
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90 if self.mode != 'normal' and protocol == 'xmpp':
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91 xmpp_participants_nicknames = self.get_xmpp_participants_nicknames_list()
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92 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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93 return p
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94
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95
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96 def getParticipant(self, nickname):
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97 """Returns a participant object if there is a participant using nickname in the bridge. Raises a NoSuchParticipantException otherwise."""
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98 for participant_ in self.participants:
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99 if participant_.nickname == nickname:
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100 return participant_
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101 raise NoSuchParticipantException('there is no participant using the nickname "'+nickname+'" in this bridge')
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102
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103
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104 def get_xmpp_participants_nicknames_list(self):
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105 xmpp_participants_nicknames = []
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106 for p in self.participants:
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107 if p.protocol == 'xmpp':
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108 xmpp_participants_nicknames.append(p.nickname)
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109 return xmpp_participants_nicknames
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110
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111
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112 def removeParticipant(self, protocol, nickname, leave_message):
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113 """Remove the participant using nickname from the bridge. Raises a NoSuchParticipantException if nickname is not used in the bridge."""
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114 p = self.getParticipant(nickname)
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115 if p.protocol == 'both':
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116 self.bot.error('===> Debug: "'+nickname+'" was on both sides of bridge "'+str(self)+'" but left '+protocol, debug=True)
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117 if protocol == 'xmpp':
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118 p.protocol = 'irc'
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119 p.createDuplicateOnXMPP()
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120 elif protocol == 'irc':
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121 p.protocol = 'xmpp'
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122 p.createDuplicateOnIRC()
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123 else:
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124 raise Exception('Internal Error: bad protocol')
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125 else:
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126 self.bot.error('===> Debug: removing participant "'+nickname+'" from bridge "'+str(self)+'"', debug=True)
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127 self.participants.remove(p)
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128 p.leave(leave_message)
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129 i = 0
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130 for p in self.participants:
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131 if p.protocol == 'xmpp':
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132 i += 1
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133 if protocol == 'xmpp' and self.irc_connections_limit != -1 and self.irc_connections_limit > i:
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134 self.switchToNormalMode()
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135 del p
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136 if self.mode != 'normal':
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137 xmpp_participants_nicknames = self.get_xmpp_participants_nicknames_list()
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138 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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139
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140
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141 def say(self, message, on_irc=True, on_xmpp=True):
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142 if on_xmpp == True:
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143 self.xmpp_room.say(message)
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144 if on_irc == True:
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145 self.irc_connection.privmsg(self.irc_room, auto_encode(message))
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146
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147
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148 def switchToNormalMode(self):
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149 if self.mode == 'normal':
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150 return
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151 prev_mode = self.mode
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152 self.mode = 'normal'
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153 for p in self.participants:
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154 if p.protocol == 'xmpp':
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155 p.createDuplicateOnIRC()
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156 elif p.protocol == 'irc' and prev_mode == 'minimal':
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157 p.createDuplicateOnXMPP()
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158 self.bot.error('===> Bridge is switching to normal mode.')
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159 self.say('[Notice] Bridge is switching to normal mode.')
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160
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161
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162 def switchToLimitedMode(self):
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163 if self.mode == 'limited':
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164 return
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165 self.mode = 'limited'
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166 i = 0
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167 for p in self.participants:
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168 if p.protocol == 'xmpp':
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169 i += 1
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170 if p.irc_connection:
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171 p.irc_connection.closing = True
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172 p.irc_connection.disconnect('Bridge is switching to limited mode')
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173 p.irc_connection = None
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174 self.irc_connections_limit = i
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175 self.bot.error('===> Bridge is switching to limited mode. Limit seems to be '+str(self.irc_connections_limit)+' on "'+self.irc_server+'".')
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176 self.say('[Warning] Bridge is switching to limited mode, it means that it will be transparent for XMPP users but not for IRC users, this is due to the IRC servers\' per-IP-address connections\' limit number which seems to be '+str(self.irc_connections_limit)+' on "'+self.irc_server+'".')
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177 xmpp_participants_nicknames = self.get_xmpp_participants_nicknames_list()
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178 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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179
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180
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181 def __str__(self):
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182 return self.irc_room+'@'+self.irc_server+' <-> '+self.xmpp_room.room_jid
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183
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184
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185 def __del__(self):
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186 # Delete participants objects
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187 for p in self.participants:
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188 p.leave('Removing bridge')
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189 del p
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190 # Leave IRC room
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191 self.irc_connection.quit('Removing bridge')
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192 # Close IRC connection
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193 self.irc_connection.close()
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194 del self.irc_connection
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195 # Leave XMPP room
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196 self.xmpp_room.leave('Removing bridge')