35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
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'''
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Onionr - Private P2P Communication
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pick online peers in a communicator instance
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'''
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'''
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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import secrets
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def pick_online_peer(comm_inst):
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'''randomly picks peer from pool without bias (using secrets module)'''
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ret_data = ''
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while True:
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peer_length = len(comm_inst.onlinePeers)
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if peer_length <= 0:
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break
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try:
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# get a random online peer, securely. May get stuck in loop if network is lost or if all peers in pool magically disconnect at once
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ret_data = comm_inst.onlinePeers[secrets.randbelow(peer_length)]
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except IndexError:
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pass
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else:
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break
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return ret_data
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