mirror of
https://github.com/espressif/openthread.git
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Esko Dijk
48346e3924
This adds a CLI command 'simulation_ble_disconnect' in the TCAT Commissioner, to simulate a sudden BLE link disconnection while the TLS session is still active. Also no Disconnect TLV is sent in this case. This feature is useful for simulation testing of TCAT and for CI testing.
71 lines
2.8 KiB
Python
71 lines
2.8 KiB
Python
"""
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Copyright (c) 2024-2025, The OpenThread Authors.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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"""
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import logging
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import socket
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import select
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logger = logging.getLogger(__name__)
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class UdpStream:
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BASE_PORT = 10000
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MAX_SERVER_TIMEOUT_SEC = 0.010
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def __init__(self, address, node_id):
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self.__receive_buffer = b''
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self.__last_recv_time = None
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self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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self.socket.setblocking(False)
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self.address = (address, self.BASE_PORT + node_id)
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def __str__(self):
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return f"UdpStream[{self.address[0]}:{self.address[1]}]"
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async def send(self, data):
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logger.debug(f'tx {len(data)} bytes')
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return self.socket.sendto(data, self.address)
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async def recv(self, bufsize):
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ready = select.select([self.socket], [], [], self.MAX_SERVER_TIMEOUT_SEC)
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if ready[0]:
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data = self.socket.recv(bufsize)
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logger.debug(f'rx {len(data)} bytes')
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return data
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else:
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return b''
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async def simulation_ble_disconnect(self):
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# Simulate a BLE link break (e.g. peer out of range) by sending a zero-length UDP
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# datagram. Unlike `disconnect`, this does not send a Disconnect TLV and does not
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# perform a clean TLS shutdown.
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self.socket.sendto(b'', self.address)
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async def disconnect(self):
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self.socket.close()
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