mirror of
https://github.com/google/bumble.git
synced 2026-04-16 00:25:31 +00:00
ce9004f0ac
[85542e0] fix test [3748781] add ASAH sink example [e782e29] add app [83daa30] wip [7f138a0] add test [f732108] allow different address syntax [9d0bbf8] rename deprecated methods [eb303d5] add LE CoC support
285 lines
8.6 KiB
Python
285 lines
8.6 KiB
Python
# Copyright 2021-2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# -----------------------------------------------------------------------------
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# Imports
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# -----------------------------------------------------------------------------
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import asyncio
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import logging
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import os
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import random
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import pytest
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from bumble.controller import Controller
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from bumble.link import LocalLink
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from bumble.device import Device
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from bumble.host import Host
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from bumble.transport import AsyncPipeSink
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from bumble.core import ProtocolError
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from bumble.l2cap import (
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L2CAP_Connection_Request
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)
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# -----------------------------------------------------------------------------
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# Logging
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# -----------------------------------------------------------------------------
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logger = logging.getLogger(__name__)
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# -----------------------------------------------------------------------------
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class TwoDevices:
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def __init__(self):
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self.connections = [None, None]
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self.link = LocalLink()
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self.controllers = [
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Controller('C1', link = self.link),
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Controller('C2', link = self.link)
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]
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self.devices = [
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Device(
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address = 'F0:F1:F2:F3:F4:F5',
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host = Host(self.controllers[0], AsyncPipeSink(self.controllers[0]))
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),
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Device(
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address = 'F5:F4:F3:F2:F1:F0',
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host = Host(self.controllers[1], AsyncPipeSink(self.controllers[1]))
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)
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]
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self.paired = [None, None]
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def on_connection(self, which, connection):
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self.connections[which] = connection
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def on_paired(self, which, keys):
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self.paired[which] = keys
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# -----------------------------------------------------------------------------
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async def setup_connection():
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# Create two devices, each with a controller, attached to the same link
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two_devices = TwoDevices()
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# Attach listeners
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two_devices.devices[0].on('connection', lambda connection: two_devices.on_connection(0, connection))
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two_devices.devices[1].on('connection', lambda connection: two_devices.on_connection(1, connection))
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# Start
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await two_devices.devices[0].power_on()
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await two_devices.devices[1].power_on()
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# Connect the two devices
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await two_devices.devices[0].connect(two_devices.devices[1].random_address)
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# Check the post conditions
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assert(two_devices.connections[0] is not None)
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assert(two_devices.connections[1] is not None)
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return two_devices
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# -----------------------------------------------------------------------------
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def test_helpers():
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psm = L2CAP_Connection_Request.serialize_psm(0x01)
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assert(psm == bytes([0x01, 0x00]))
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psm = L2CAP_Connection_Request.serialize_psm(0x1023)
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assert(psm == bytes([0x23, 0x10]))
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psm = L2CAP_Connection_Request.serialize_psm(0x242311)
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assert(psm == bytes([0x11, 0x23, 0x24]))
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(offset, psm) = L2CAP_Connection_Request.parse_psm(bytes([0x00, 0x01, 0x00, 0x44]), 1)
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assert(offset == 3)
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assert(psm == 0x01)
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(offset, psm) = L2CAP_Connection_Request.parse_psm(bytes([0x00, 0x23, 0x10, 0x44]), 1)
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assert(offset == 3)
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assert(psm == 0x1023)
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(offset, psm) = L2CAP_Connection_Request.parse_psm(bytes([0x00, 0x11, 0x23, 0x24, 0x44]), 1)
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assert(offset == 4)
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assert(psm == 0x242311)
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rq = L2CAP_Connection_Request(psm = 0x01, source_cid = 0x44)
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brq = bytes(rq)
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srq = L2CAP_Connection_Request.from_bytes(brq)
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assert(srq.psm == rq.psm)
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assert(srq.source_cid == rq.source_cid)
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# -----------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_basic_connection():
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devices = await setup_connection()
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psm = 1234
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# Check that if there's no one listening, we can't connect
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with pytest.raises(ProtocolError):
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l2cap_channel = await devices.connections[0].open_l2cap_channel(psm)
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# Now add a listener
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incoming_channel = None
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received = []
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def on_coc(channel):
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nonlocal incoming_channel
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incoming_channel = channel
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def on_data(data):
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received.append(data)
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channel.sink = on_data
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devices.devices[1].register_l2cap_channel_server(psm, on_coc)
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l2cap_channel = await devices.connections[0].open_l2cap_channel(psm)
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messages = (
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bytes([1, 2, 3]),
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bytes([4, 5, 6]),
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bytes(10000)
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)
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for message in messages:
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l2cap_channel.write(message)
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await asyncio.sleep(0)
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await l2cap_channel.drain()
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# Test closing
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closed = [False, False]
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closed_event = asyncio.Event()
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def on_close(which, event):
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closed[which] = True
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if event:
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event.set()
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l2cap_channel.on('close', lambda: on_close(0, None))
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incoming_channel.on('close', lambda: on_close(1, closed_event))
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await l2cap_channel.disconnect()
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assert(closed == [True, True])
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await closed_event.wait()
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sent_bytes = b''.join(messages)
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received_bytes = b''.join(received)
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assert(sent_bytes == received_bytes)
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# -----------------------------------------------------------------------------
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async def transfer_payload(max_credits, mtu, mps):
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devices = await setup_connection()
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received = []
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def on_coc(channel):
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def on_data(data):
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received.append(data)
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channel.sink = on_data
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psm = devices.devices[1].register_l2cap_channel_server(
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psm = 0,
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server = on_coc,
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max_credits = max_credits,
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mtu = mtu,
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mps = mps
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)
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l2cap_channel = await devices.connections[0].open_l2cap_channel(psm)
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messages = [
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bytes([1, 2, 3, 4, 5, 6, 7]) * x
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for x in (3, 10, 100, 500, 789)
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]
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for message in messages:
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l2cap_channel.write(message)
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await asyncio.sleep(0)
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if random.randint(0, 5) == 1:
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await l2cap_channel.drain()
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await l2cap_channel.drain()
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await l2cap_channel.disconnect()
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sent_bytes = b''.join(messages)
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received_bytes = b''.join(received)
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assert(sent_bytes == received_bytes)
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@pytest.mark.asyncio
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async def test_transfer():
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for max_credits in (1, 10, 100, 10000):
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for mtu in (23, 24, 25, 26, 50, 200, 255, 256, 1000):
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for mps in (23, 24, 25, 26, 50, 200, 255, 256, 1000):
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# print(max_credits, mtu, mps)
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await transfer_payload(max_credits, mtu, mps)
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# -----------------------------------------------------------------------------
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@pytest.mark.asyncio
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async def test_bidirectional_transfer():
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devices = await setup_connection()
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client_received = []
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server_received = []
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server_channel = None
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def on_server_coc(channel):
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nonlocal server_channel
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server_channel = channel
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def on_server_data(data):
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server_received.append(data)
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channel.sink = on_server_data
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def on_client_data(data):
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client_received.append(data)
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psm = devices.devices[1].register_l2cap_channel_server(psm=0, server=on_server_coc)
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client_channel = await devices.connections[0].open_l2cap_channel(psm)
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client_channel.sink = on_client_data
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messages = [
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bytes([1, 2, 3, 4, 5, 6, 7]) * x
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for x in (3, 10, 100)
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]
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for message in messages:
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client_channel.write(message)
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await client_channel.drain()
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await asyncio.sleep(0)
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server_channel.write(message)
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await server_channel.drain()
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await client_channel.disconnect()
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message_bytes = b''.join(messages)
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client_received_bytes = b''.join(client_received)
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server_received_bytes = b''.join(server_received)
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assert(client_received_bytes == message_bytes)
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assert(server_received_bytes == message_bytes)
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# -----------------------------------------------------------------------------
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async def run():
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test_helpers()
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await test_basic_connection()
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await test_transfer()
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await test_bidirectional_transfer()
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# -----------------------------------------------------------------------------
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if __name__ == '__main__':
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logging.basicConfig(level = os.environ.get('BUMBLE_LOGLEVEL', 'INFO').upper())
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asyncio.run(run())
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