From f058b5d64eed31878533a85f25eb53386ff9e330 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20R=C4=85czy?= <gfw.kra@gmail.com>
Date: Fri, 1 Dec 2023 21:13:37 -0800
Subject: [PATCH] webrtcd: webrtc streaming server (audio/video/cereal)
 (#30186)

* WebRTCClient and WebRTCServer abstractions

* webrtc client implementation

* Interactive test scripts

* Send localDescriptions as offer/asnwer, as they are different

* Tracks need to be added after setting remote description for multi-cam streaming to work

* Remove WebRTCStreamingMetadata

* Wait for tracks

* Move stuff to separate files, rename some things

* Refactor everything, create WebRTCStreamBuilder for both offer and answers

* ta flight done time to grind

* wait for incoming tracks and channels

* Dummy track and frame reader track. Fix timing.

* dt based on camera type

* first trial of the new api

* Fix audio track

* methods for checking for incoming tracks

* Web migration part 2

* Fixes for stream api

* use rtc description for web.py

* experimental cereal proxy

* remove old code from bodyav

* fix is_started

* serialize session description

* fix audio

* messaging channel wrapper

* fix audiotrack

* h264 codec preference

* Add codec preference to tracks

* override sdp codecs

* add logging

* Move cli stuff to separate file

* slight cleanup

* Fix audio track

* create codec_mime inside force_codec function

* fix incoming media estimation

* move builders to __init__

* stream updates following builders

* Update example script

* web.py support for new builder

* web speaker fixes

* StreamingMediaInfo API

* Move things around

* should_add_data_channel rename

* is_connected_and_ready

* fix linter errors

* make cli executable

* remove dumb comments

* logging support

* fix parse_info_from_offer

* improve type annotations

* satisfy linters

* Support for waiting for disconnection

* Split device tracks into video/audio files. Move audio speaker to audio.py

* default dt for dummy video track

* Fix cli

* new speaker fixes

* Remove almost all functionality from web.py

* webrtcd

* continue refactoring web.py

* after handling joystick reset in controlsd with #30409, controls are not necessary anymore

* ping endpoint

* Update js files to at least support what worked previously

* Fixes after some tests on the body

* Streaming fixes

* Remove the use of WebRTCStreamBuilder. Subclass use is now required

* Add todo

* delete all streams on shutdown

* Replace lastPing with lastChannelMessageTime

* Update ping text only if rtc is still on

* That should affect the chart too

* Fix paths in web

* use protocol in SSLContext

* remove warnings since aiortc is not used directly anymore

* check if task is done in stop

* remove channel handler wrapper, since theres only one channel

* Move things around

* Moved webrtc abstractions to separate repository

* Moved webrtcd to tools/webrtc

* Update imports

* Add bodyrtc as dependency

* Add webrtcd to process_config

* Remove usage of DummyVideoStreamTrack

* Add main to webrtcd

* Move webrtcd to system

* Fix imports

* Move cereal proxy logic outside of runner

* Incoming proxy abstractions

* Add some tests

* Make it executable

* Fix process config

* Fix imports

* Additional tests. Add tests to pyproject.toml

* Update poetry lock

* New line

* Bump aiortc to 1.6.0

* Added teleoprtc_repo as submodule, and linked its source dir

* Add init file to webrtc module

* Handle aiortc warnings

* Ignore deprecation warnings

* Ignore resource warning too

* Ignore the warnings

* find free port for test_webrtcd

* Start process inside the test case

* random sleep test

* test 2

* Test endpoint function instead

* Update comment

* Add system/webrtc to release

* default arguments for body fields

* Add teleoprtc to release

* Bump teleoprtc

* Exclude teleoprtc from static analysis

* Use separate event loop for stream session tests
---
 .gitmodules                                |   3 +
 .pre-commit-config.yaml                    |   6 +-
 poetry.lock                                |  81 +++----
 pyproject.toml                             |   4 +
 release/files_common                       |   7 +
 selfdrive/manager/process_config.py        |   1 +
 system/webrtc/__init__.py                  |   0
 system/webrtc/device/audio.py              | 110 +++++++++
 system/webrtc/device/video.py              |  69 ++++++
 system/webrtc/tests/test_stream_session.py | 108 +++++++++
 system/webrtc/tests/test_webrtcd.py        |  60 +++++
 system/webrtc/webrtcd.py                   | 237 +++++++++++++++++++
 teleoprtc                                  |   1 +
 teleoprtc_repo                             |   1 +
 tools/bodyteleop/bodyav.py                 | 159 -------------
 tools/bodyteleop/static/js/jsmain.js       |  10 +-
 tools/bodyteleop/static/js/webrtc.js       | 144 +++++-------
 tools/bodyteleop/web.py                    | 259 +++++++--------------
 18 files changed, 787 insertions(+), 473 deletions(-)
 create mode 100644 system/webrtc/__init__.py
 create mode 100644 system/webrtc/device/audio.py
 create mode 100644 system/webrtc/device/video.py
 create mode 100755 system/webrtc/tests/test_stream_session.py
 create mode 100755 system/webrtc/tests/test_webrtcd.py
 create mode 100755 system/webrtc/webrtcd.py
 create mode 120000 teleoprtc
 create mode 160000 teleoprtc_repo
 delete mode 100644 tools/bodyteleop/bodyav.py

diff --git a/.gitmodules b/.gitmodules
index 4ba149cb2..73f832b1d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,6 +13,9 @@
 [submodule "body"]
   path = body
   url = ../../commaai/body.git
+[submodule "teleoprtc_repo"]
+  path = teleoprtc_repo
+  url = ../../commaai/teleoprtc
 [submodule "tinygrad"]
   path = tinygrad_repo
   url = https://github.com/geohot/tinygrad.git
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b6a46ad50..2109c18b2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -26,7 +26,7 @@ repos:
     rev: v2.2.6
     hooks:
     -   id: codespell
-        exclude: '^(third_party/)|(body/)|(cereal/)|(panda/)|(opendbc/)|(rednose/)|(rednose_repo/)|(selfdrive/ui/translations/.*.ts)|(poetry.lock)'
+        exclude: '^(third_party/)|(body/)|(cereal/)|(panda/)|(opendbc/)|(rednose/)|(rednose_repo/)|(teleoprtc/)|(teleoprtc_repo/)|(selfdrive/ui/translations/.*.ts)|(poetry.lock)'
         args:
         # if you've got a short variable name that's getting flagged, add it here
         - -L bu,ro,te,ue,alo,hda,ois,nam,nams,ned,som,parm,setts,inout,warmup,bumb,nd,sie,preints
@@ -39,12 +39,12 @@ repos:
         language: system
         types: [python]
         args: ['--explicit-package-bases', '--local-partial-types']
-        exclude: '^(third_party/)|(cereal/)|(opendbc/)|(panda/)|(rednose/)|(rednose_repo/)|(tinygrad/)|(tinygrad_repo/)|(xx/)'
+        exclude: '^(third_party/)|(cereal/)|(opendbc/)|(panda/)|(rednose/)|(rednose_repo/)|(tinygrad/)|(tinygrad_repo/)|(teleoprtc/)|(teleoprtc_repo/)|(xx/)'
 -   repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.1.6
     hooks:
     -   id: ruff
-        exclude: '^(third_party/)|(cereal/)|(panda/)|(rednose/)|(rednose_repo/)|(tinygrad/)|(tinygrad_repo/)'
+        exclude: '^(third_party/)|(cereal/)|(panda/)|(rednose/)|(rednose_repo/)|(tinygrad/)|(tinygrad_repo/)|(teleoprtc/)|(teleoprtc_repo/)'
 -   repo: local
     hooks:
     -   id: cppcheck
diff --git a/poetry.lock b/poetry.lock
index b05dcae11..1461d5457 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -112,66 +112,39 @@ ifaddr = ">=0.2.0"
 
 [[package]]
 name = "aiortc"
-version = "1.5.0"
+version = "1.6.0"
 description = "An implementation of WebRTC and ORTC"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
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+    {file = "aiortc-1.6.0-pp310-pypy310_pp73-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:607b9496b4a3c8cd9d32afb6d5bce07f9170831ec44a20ab8af54d53879aafc8"},
+    {file = "aiortc-1.6.0-pp310-pypy310_pp73-win_amd64.whl", hash = "sha256:0a41f4c0b31e45548e7c7397ef1aecc4be49ab68afd8fa134c07581fe0b3a9c2"},
+    {file = "aiortc-1.6.0-pp38-pypy38_pp73-macosx_10_9_x86_64.whl", hash = "sha256:64a9939016edbc8f300de6189983c983753827813ac9acd9b5be8ce61cc32684"},
+    {file = "aiortc-1.6.0-pp38-pypy38_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:813e7985665c94a0e3387b66e39dba6c751e5e588aedbca06d7e52068c6e37fb"},
+    {file = "aiortc-1.6.0-pp38-pypy38_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:672d0b4ad35c4d8f014f44a142aa55529ec82cfe2809226e1275e35a71fd4422"},
+    {file = "aiortc-1.6.0-pp38-pypy38_pp73-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:1526a1904174bb11958b8f7e93f01f37f80df2190e5089f0501984bdef79595e"},
+    {file = "aiortc-1.6.0-pp38-pypy38_pp73-win_amd64.whl", hash = "sha256:cecfa5f462e73218cadc9acd8013cb3a0d9007a4515bceba6e7755d77bb80061"},
+    {file = "aiortc-1.6.0-pp39-pypy39_pp73-macosx_10_9_x86_64.whl", hash = "sha256:febca6773de18a6bb9e5569ae87c8be55ed184695f1f9fc99aa4744a7b0375f8"},
+    {file = "aiortc-1.6.0-pp39-pypy39_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:b5ba865be9708713397ec584ed1baeb2f15d2fa9c32594ce19a41ffa6e2517cb"},
+    {file = "aiortc-1.6.0-pp39-pypy39_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:f9759a3c00e46ba1c3499dbf5a8513ae37ba65b940a56b0e7fa5070478e9379f"},
+    {file = "aiortc-1.6.0-pp39-pypy39_pp73-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:9cff7868663d9d1c74e237b86e45126022466240439a5f63c3440e3acdf0305b"},
+    {file = "aiortc-1.6.0-pp39-pypy39_pp73-win_amd64.whl", hash = "sha256:9f20479d0dd06116ac81d332850fab874d83b561a73fd7252d218f55c6bd5b79"},
+    {file = "aiortc-1.6.0.tar.gz", hash = "sha256:08cffbcde3401b33731b1d4169b9ff860b0aaaca200b62e10ce5978238671ad7"},
 ]
 
 [package.dependencies]
 aioice = ">=0.9.0,<1.0.0"
-av = ">=9.0.0,<11.0.0"
+av = ">=9.0.0,<12.0.0"
 cffi = ">=1.0.0"
 cryptography = ">=2.2"
 google-crc32c = ">=1.1"
@@ -180,7 +153,7 @@ pylibsrtp = ">=0.5.6"
 pyopenssl = ">=23.1.0"
 
 [package.extras]
-dev = ["aiohttp (>=3.7.0)", "coverage (>=5.0)", "numpy (>=1.19.0)"]
+dev = ["aiohttp (>=3.7.0)", "coverage[toml] (>=7.2.2)", "numpy (>=1.19.0)"]
 
 [[package]]
 name = "aiosignal"
diff --git a/pyproject.toml b/pyproject.toml
index 1426905d0..0e55e2ac6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ testpaths = [
   "system/proclogd",
   "system/tests",
   "system/ubloxd",
+  "system/webrtc",
   "tools/lib/tests",
   "tools/replay",
   "tools/cabana"
@@ -43,6 +44,8 @@ exclude = [
   "rednose_repo/",
   "tinygrad/",
   "tinygrad_repo/",
+  "teleoprtc/",
+  "teleoprtc_repo/",
   "third_party/",
 ]
 
@@ -186,6 +189,7 @@ exclude = [
   "opendbc",
   "rednose_repo",
   "tinygrad_repo",
+  "teleoprtc",
   "third_party",
 ]
 flake8-implicit-str-concat.allow-multiline=false
diff --git a/release/files_common b/release/files_common
index af5d156d4..d92be1c3a 100644
--- a/release/files_common
+++ b/release/files_common
@@ -281,6 +281,11 @@ system/sensord/sensors/*.cc
 system/sensord/sensors/*.h
 system/sensord/pigeond.py
 
+system/webrtc/__init__.py
+system/webrtc/webrtcd.py
+system/webrtc/device/audio.py
+system/webrtc/device/video.py
+
 selfdrive/thermald/thermald.py
 selfdrive/thermald/power_monitoring.py
 selfdrive/thermald/fan_controller.py
@@ -439,6 +444,8 @@ third_party/qt5/larch64/bin/**
 scripts/update_now.sh
 scripts/stop_updater.sh
 
+teleoprtc/**
+
 rednose_repo/site_scons/site_tools/rednose_filter.py
 rednose/.gitignore
 rednose/**
diff --git a/selfdrive/manager/process_config.py b/selfdrive/manager/process_config.py
index 6f974b068..4ad257418 100644
--- a/selfdrive/manager/process_config.py
+++ b/selfdrive/manager/process_config.py
@@ -84,6 +84,7 @@ procs = [
 
   # debug procs
   NativeProcess("bridge", "cereal/messaging", ["./bridge"], notcar),
+  PythonProcess("webrtcd", "system.webrtc.webrtcd", notcar),
   PythonProcess("webjoystick", "tools.bodyteleop.web", notcar),
 ]
 
diff --git a/system/webrtc/__init__.py b/system/webrtc/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/system/webrtc/device/audio.py b/system/webrtc/device/audio.py
new file mode 100644
index 000000000..3c78be675
--- /dev/null
+++ b/system/webrtc/device/audio.py
@@ -0,0 +1,110 @@
+import asyncio
+import io
+from typing import Optional, List, Tuple
+
+import aiortc
+import av
+import numpy as np
+import pyaudio
+
+
+class AudioInputStreamTrack(aiortc.mediastreams.AudioStreamTrack):
+  PYAUDIO_TO_AV_FORMAT_MAP = {
+      pyaudio.paUInt8: 'u8',
+      pyaudio.paInt16: 's16',
+      pyaudio.paInt24: 's24',
+      pyaudio.paInt32: 's32',
+      pyaudio.paFloat32: 'flt',
+  }
+
+  def __init__(self, audio_format: int = pyaudio.paInt16, rate: int = 16000, channels: int = 1, packet_time: float = 0.020, device_index: Optional[int] = None):
+    super().__init__()
+
+    self.p = pyaudio.PyAudio()
+    chunk_size = int(packet_time * rate)
+    self.stream = self.p.open(format=audio_format,
+                              channels=channels,
+                              rate=rate,
+                              frames_per_buffer=chunk_size,
+                              input=True,
+                              input_device_index=device_index)
+    self.format = audio_format
+    self.rate = rate
+    self.channels = channels
+    self.packet_time = packet_time
+    self.chunk_size = chunk_size
+    self.pts = 0
+
+  async def recv(self):
+    mic_data = self.stream.read(self.chunk_size)
+    mic_array = np.frombuffer(mic_data, dtype=np.int16)
+    mic_array = np.expand_dims(mic_array, axis=0)
+    layout = 'stereo' if self.channels > 1 else 'mono'
+    frame = av.AudioFrame.from_ndarray(mic_array, format=self.PYAUDIO_TO_AV_FORMAT_MAP[self.format], layout=layout)
+    frame.rate = self.rate
+    frame.pts = self.pts
+    self.pts += frame.samples
+
+    return frame
+
+
+class AudioOutputSpeaker:
+  def __init__(self, audio_format: int = pyaudio.paInt16, rate: int = 48000, channels: int = 2, packet_time: float = 0.2, device_index: Optional[int] = None):
+
+    chunk_size = int(packet_time * rate)
+    self.p = pyaudio.PyAudio()
+    self.buffer = io.BytesIO()
+    self.channels = channels
+    self.stream = self.p.open(format=audio_format,
+                              channels=channels,
+                              rate=rate,
+                              frames_per_buffer=chunk_size,
+                              output=True,
+                              output_device_index=device_index,
+                              stream_callback=self.__pyaudio_callback)
+    self.tracks_and_tasks: List[Tuple[aiortc.MediaStreamTrack, Optional[asyncio.Task]]] = []
+
+  def __pyaudio_callback(self, in_data, frame_count, time_info, status):
+    if self.buffer.getbuffer().nbytes < frame_count * self.channels * 2:
+      buff = b'\x00\x00' * frame_count * self.channels
+    elif self.buffer.getbuffer().nbytes > 115200:  # 3x the usual read size
+      self.buffer.seek(0)
+      buff = self.buffer.read(frame_count * self.channels * 4)
+      buff = buff[:frame_count * self.channels * 2]
+      self.buffer.seek(2)
+    else:
+      self.buffer.seek(0)
+      buff = self.buffer.read(frame_count * self.channels * 2)
+      self.buffer.seek(2)
+    return (buff, pyaudio.paContinue)
+
+  async def __consume(self, track):
+    while True:
+      try:
+        frame = await track.recv()
+      except aiortc.MediaStreamError:
+        return
+
+      self.buffer.write(bytes(frame.planes[0]))
+
+  def hasTrack(self, track: aiortc.MediaStreamTrack) -> bool:
+    return any(t == track for t, _ in self.tracks_and_tasks)
+
+  def addTrack(self, track: aiortc.MediaStreamTrack):
+    if not self.hasTrack(track):
+      self.tracks_and_tasks.append((track, None))
+
+  def start(self):
+    for index, (track, task) in enumerate(self.tracks_and_tasks):
+      if task is None:
+        self.tracks_and_tasks[index] = (track, asyncio.create_task(self.__consume(track)))
+
+  def stop(self):
+    for _, task in self.tracks_and_tasks:
+      if task is not None:
+        task.cancel()
+
+    self.tracks_and_tasks = []
+    self.stream.stop_stream()
+    self.stream.close()
+    self.p.terminate()
diff --git a/system/webrtc/device/video.py b/system/webrtc/device/video.py
new file mode 100644
index 000000000..1ecb6dbd7
--- /dev/null
+++ b/system/webrtc/device/video.py
@@ -0,0 +1,69 @@
+import asyncio
+from typing import Optional
+
+import av
+from teleoprtc.tracks import TiciVideoStreamTrack
+
+from cereal import messaging
+from openpilot.tools.lib.framereader import FrameReader
+from openpilot.common.realtime import DT_MDL, DT_DMON
+
+
+class LiveStreamVideoStreamTrack(TiciVideoStreamTrack):
+  camera_to_sock_mapping = {
+    "driver": "livestreamDriverEncodeData",
+    "wideRoad": "livestreamWideRoadEncodeData",
+    "road": "livestreamRoadEncodeData",
+  }
+
+  def __init__(self, camera_type: str):
+    dt = DT_DMON if camera_type == "driver" else DT_MDL
+    super().__init__(camera_type, dt)
+
+    self._sock = messaging.sub_sock(self.camera_to_sock_mapping[camera_type], conflate=True)
+    self._pts = 0
+
+  async def recv(self):
+    while True:
+      msg = messaging.recv_one_or_none(self._sock)
+      if msg is not None:
+        break
+      await asyncio.sleep(0.005)
+
+    evta = getattr(msg, msg.which())
+
+    packet = av.Packet(evta.header + evta.data)
+    packet.time_base = self._time_base
+    packet.pts = self._pts
+
+    self.log_debug("track sending frame %s", self._pts)
+    self._pts += self._dt * self._clock_rate
+
+    return packet
+
+  def codec_preference(self) -> Optional[str]:
+    return "H264"
+
+
+class FrameReaderVideoStreamTrack(TiciVideoStreamTrack):
+  def __init__(self, input_file: str, dt: float = DT_MDL, camera_type: str = "driver"):
+    super().__init__(camera_type, dt)
+
+    frame_reader = FrameReader(input_file)
+    self._frames = [frame_reader.get(i, pix_fmt="rgb24") for i in range(frame_reader.frame_count)]
+    self._frame_count = len(self.frames)
+    self._frame_index = 0
+    self._pts = 0
+
+  async def recv(self):
+    self.log_debug("track sending frame %s", self._pts)
+    img = self._frames[self._frame_index]
+
+    new_frame = av.VideoFrame.from_ndarray(img, format="rgb24")
+    new_frame.pts = self._pts
+    new_frame.time_base = self._time_base
+
+    self._frame_index = (self._frame_index + 1) % self._frame_count
+    self._pts = await self.next_pts(self._pts)
+
+    return new_frame
diff --git a/system/webrtc/tests/test_stream_session.py b/system/webrtc/tests/test_stream_session.py
new file mode 100755
index 000000000..2173c3806
--- /dev/null
+++ b/system/webrtc/tests/test_stream_session.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python3
+import asyncio
+import unittest
+from unittest.mock import Mock, MagicMock, patch
+import json
+# for aiortc and its dependencies
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+from aiortc import RTCDataChannel
+from aiortc.mediastreams import VIDEO_CLOCK_RATE, VIDEO_TIME_BASE
+import capnp
+import pyaudio
+
+from cereal import messaging, log
+
+from openpilot.system.webrtc.webrtcd import CerealOutgoingMessageProxy, CerealIncomingMessageProxy
+from openpilot.system.webrtc.device.video import LiveStreamVideoStreamTrack
+from openpilot.system.webrtc.device.audio import AudioInputStreamTrack
+from openpilot.common.realtime import DT_DMON
+
+
+class TestStreamSession(unittest.TestCase):
+  def setUp(self):
+    self.loop = asyncio.new_event_loop()
+
+  def tearDown(self):
+    self.loop.stop()
+    self.loop.close()
+
+  def test_outgoing_proxy(self):
+    test_msg = log.Event.new_message()
+    test_msg.logMonoTime = 123
+    test_msg.valid = True
+    test_msg.customReservedRawData0 = b"test"
+    expected_dict = {"type": "customReservedRawData0", "logMonoTime": 123, "valid": True, "data": "test"}
+    expected_json = json.dumps(expected_dict).encode()
+
+    channel = Mock(spec=RTCDataChannel)
+    mocked_submaster = messaging.SubMaster(["customReservedRawData0"])
+    def mocked_update(t):
+      mocked_submaster.update_msgs(0, [test_msg])
+
+    with patch.object(messaging.SubMaster, "update", side_effect=mocked_update):
+      proxy = CerealOutgoingMessageProxy(mocked_submaster)
+      proxy.add_channel(channel)
+
+      proxy.update()
+
+      channel.send.assert_called_once_with(expected_json)
+
+  def test_incoming_proxy(self):
+    tested_msgs = [
+      {"type": "customReservedRawData0", "data": "test"}, # primitive
+      {"type": "can", "data": [{"address": 0, "busTime": 0, "dat": "", "src": 0}]}, # list
+      {"type": "testJoystick", "data": {"axes": [0, 0], "buttons": [False]}}, # dict
+    ]
+
+    mocked_pubmaster = MagicMock(spec=messaging.PubMaster)
+
+    proxy = CerealIncomingMessageProxy(mocked_pubmaster)
+
+    for msg in tested_msgs:
+      proxy.send(json.dumps(msg).encode())
+
+      mocked_pubmaster.send.assert_called_once()
+      mt, md = mocked_pubmaster.send.call_args.args
+      self.assertEqual(mt, msg["type"])
+      self.assertIsInstance(md, capnp._DynamicStructBuilder)
+      self.assertTrue(hasattr(md, msg["type"]))
+
+      mocked_pubmaster.reset_mock()
+
+  def test_livestream_track(self):
+    fake_msg = messaging.new_message("livestreamDriverEncodeData")
+
+    config = {"receive.return_value": fake_msg.to_bytes()}
+    with patch("cereal.messaging.SubSocket", spec=True, **config):
+      track = LiveStreamVideoStreamTrack("driver")
+
+      self.assertTrue(track.id.startswith("driver"))
+      self.assertEqual(track.codec_preference(), "H264")
+
+      for i in range(5):
+        packet = self.loop.run_until_complete(track.recv())
+        self.assertEqual(packet.time_base, VIDEO_TIME_BASE)
+        self.assertEqual(packet.pts, int(i * DT_DMON * VIDEO_CLOCK_RATE))
+        self.assertEqual(packet.size, 0)
+
+  def test_input_audio_track(self):
+    packet_time, rate = 0.02, 16000
+    sample_count = int(packet_time * rate)
+    mocked_stream = MagicMock(spec=pyaudio.Stream)
+    mocked_stream.read.return_value = b"\x00" * 2 * sample_count
+
+    config = {"open.side_effect": lambda *args, **kwargs: mocked_stream}
+    with patch("pyaudio.PyAudio", spec=True, **config):
+      track = AudioInputStreamTrack(audio_format=pyaudio.paInt16, packet_time=packet_time, rate=rate)
+
+      for i in range(5):
+        frame = self.loop.run_until_complete(track.recv())
+        self.assertEqual(frame.rate, rate)
+        self.assertEqual(frame.samples, sample_count)
+        self.assertEqual(frame.pts, i * sample_count)
+
+
+if __name__ == "__main__":
+  unittest.main()
diff --git a/system/webrtc/tests/test_webrtcd.py b/system/webrtc/tests/test_webrtcd.py
new file mode 100755
index 000000000..b48bf6bc1
--- /dev/null
+++ b/system/webrtc/tests/test_webrtcd.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+import asyncio
+import json
+import unittest
+from unittest.mock import MagicMock, AsyncMock
+# for aiortc and its dependencies
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+from openpilot.system.webrtc.webrtcd import get_stream
+
+import aiortc
+from teleoprtc import WebRTCOfferBuilder
+
+
+class TestWebrtcdProc(unittest.IsolatedAsyncioTestCase):
+  async def assertCompletesWithTimeout(self, awaitable, timeout=1):
+    try:
+      async with asyncio.timeout(timeout):
+        await awaitable
+    except asyncio.TimeoutError:
+      self.fail("Timeout while waiting for awaitable to complete")
+
+  async def test_webrtcd(self):
+    mock_request = MagicMock()
+    async def connect(offer):
+      body = {'sdp': offer.sdp, 'cameras': offer.video, 'bridge_services_in': [], 'bridge_services_out': []}
+      mock_request.json.side_effect = AsyncMock(return_value=body)
+      response = await get_stream(mock_request)
+      response_json = json.loads(response.text)
+      return aiortc.RTCSessionDescription(**response_json)
+
+    builder = WebRTCOfferBuilder(connect)
+    builder.offer_to_receive_video_stream("road")
+    builder.offer_to_receive_audio_stream()
+    builder.add_messaging()
+
+    stream = builder.stream()
+
+    await self.assertCompletesWithTimeout(stream.start())
+    await self.assertCompletesWithTimeout(stream.wait_for_connection())
+
+    self.assertTrue(stream.has_incoming_video_track("road"))
+    self.assertTrue(stream.has_incoming_audio_track())
+    self.assertTrue(stream.has_messaging_channel())
+
+    video_track, audio_track = stream.get_incoming_video_track("road"), stream.get_incoming_audio_track()
+    await self.assertCompletesWithTimeout(video_track.recv())
+    await self.assertCompletesWithTimeout(audio_track.recv())
+
+    await self.assertCompletesWithTimeout(stream.stop())
+
+    # cleanup, very implementation specific, test may break if it changes
+    self.assertTrue(mock_request.app["streams"].__setitem__.called, "Implementation changed, please update this test")
+    _, session = mock_request.app["streams"].__setitem__.call_args.args
+    await self.assertCompletesWithTimeout(session.post_run_cleanup())
+
+
+if __name__ == "__main__":
+  unittest.main()
diff --git a/system/webrtc/webrtcd.py b/system/webrtc/webrtcd.py
new file mode 100755
index 000000000..237cae78a
--- /dev/null
+++ b/system/webrtc/webrtcd.py
@@ -0,0 +1,237 @@
+#!/usr/bin/env python3
+
+import argparse
+import asyncio
+import json
+import uuid
+import logging
+from dataclasses import dataclass, field
+from typing import Any, List, Optional, Union
+
+# aiortc and its dependencies have lots of internal warnings :(
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+import aiortc
+from aiortc.mediastreams import VideoStreamTrack, AudioStreamTrack
+from aiortc.contrib.media import MediaBlackhole
+from aiohttp import web
+import capnp
+from teleoprtc import WebRTCAnswerBuilder
+from teleoprtc.info import parse_info_from_offer
+
+from openpilot.system.webrtc.device.video import LiveStreamVideoStreamTrack
+from openpilot.system.webrtc.device.audio import AudioInputStreamTrack, AudioOutputSpeaker
+
+from cereal import messaging
+
+
+class CerealOutgoingMessageProxy:
+  def __init__(self, sm: messaging.SubMaster):
+    self.sm = sm
+    self.channels: List[aiortc.RTCDataChannel] = []
+
+  def add_channel(self, channel: aiortc.RTCDataChannel):
+    self.channels.append(channel)
+
+  def to_json(self, msg_content: Any):
+    if isinstance(msg_content, capnp._DynamicStructReader):
+      msg_dict = msg_content.to_dict()
+    elif isinstance(msg_content, capnp._DynamicListReader):
+      msg_dict = [self.to_json(msg) for msg in msg_content]
+    elif isinstance(msg_content, bytes):
+      msg_dict = msg_content.decode()
+    else:
+      msg_dict = msg_content
+
+    return msg_dict
+
+  def update(self):
+    # this is blocking in async context...
+    self.sm.update(0)
+    for service, updated in self.sm.updated.items():
+      if not updated:
+        continue
+      msg_dict = self.to_json(self.sm[service])
+      mono_time, valid = self.sm.logMonoTime[service], self.sm.valid[service]
+      outgoing_msg = {"type": service, "logMonoTime": mono_time, "valid": valid, "data": msg_dict}
+      encoded_msg = json.dumps(outgoing_msg).encode()
+      for channel in self.channels:
+        channel.send(encoded_msg)
+
+
+class CerealIncomingMessageProxy:
+  def __init__(self, pm: messaging.PubMaster):
+    self.pm = pm
+
+  def send(self, message: bytes):
+    msg_json = json.loads(message)
+    msg_type, msg_data = msg_json["type"], msg_json["data"]
+    size = None
+    if not isinstance(msg_data, dict):
+      size = len(msg_data)
+
+    msg = messaging.new_message(msg_type, size=size)
+    setattr(msg, msg_type, msg_data)
+    self.pm.send(msg_type, msg)
+
+
+class CerealProxyRunner:
+  def __init__(self, proxy: CerealOutgoingMessageProxy):
+    self.proxy = proxy
+    self.is_running = False
+    self.task = None
+    self.logger = logging.getLogger("webrtcd")
+
+  def start(self):
+    assert self.task is None
+    self.task = asyncio.create_task(self.run())
+
+  def stop(self):
+    if self.task is None or self.task.done():
+      return
+    self.task.cancel()
+    self.task = None
+
+  async def run(self):
+    while True:
+      try:
+        self.proxy.update()
+      except Exception as ex:
+        self.logger.error("Cereal outgoing proxy failure: %s", ex)
+      await asyncio.sleep(0.01)
+
+
+class StreamSession:
+  def __init__(self, sdp: str, cameras: List[str], incoming_services: List[str], outgoing_services: List[str], debug_mode: bool = False):
+    config = parse_info_from_offer(sdp)
+    builder = WebRTCAnswerBuilder(sdp)
+
+    assert len(cameras) == config.n_expected_camera_tracks, "Incoming stream has misconfigured number of video tracks"
+    for cam in cameras:
+      track = LiveStreamVideoStreamTrack(cam) if not debug_mode else VideoStreamTrack()
+      builder.add_video_stream(cam, track)
+    if config.expected_audio_track:
+      track = AudioInputStreamTrack() if not debug_mode else AudioStreamTrack()
+      builder.add_audio_stream(track)
+    if config.incoming_audio_track:
+      self.audio_output_cls = AudioOutputSpeaker if not debug_mode else MediaBlackhole
+      builder.offer_to_receive_audio_stream()
+
+    self.stream = builder.stream()
+    self.identifier = str(uuid.uuid4())
+
+    self.outgoing_bridge = CerealOutgoingMessageProxy(messaging.SubMaster(outgoing_services))
+    self.incoming_bridge = CerealIncomingMessageProxy(messaging.PubMaster(incoming_services))
+    self.outgoing_bridge_runner = CerealProxyRunner(self.outgoing_bridge)
+
+    self.audio_output: Optional[Union[AudioOutputSpeaker, MediaBlackhole]] = None
+    self.run_task: Optional[asyncio.Task] = None
+    self.logger = logging.getLogger("webrtcd")
+    self.logger.info("New stream session (%s), cameras %s, audio in %s out %s, incoming services %s, outgoing services %s",
+                      self.identifier, cameras, config.incoming_audio_track, config.expected_audio_track, incoming_services, outgoing_services)
+
+  def start(self):
+    self.run_task = asyncio.create_task(self.run())
+
+  def stop(self):
+    if self.run_task.done():
+      return
+    self.run_task.cancel()
+    self.run_task = None
+    asyncio.run(self.post_run_cleanup())
+
+  async def get_answer(self):
+    return await self.stream.start()
+
+  async def message_handler(self, message: bytes):
+    try:
+      self.incoming_bridge.send(message)
+    except Exception as ex:
+      self.logger.error("Cereal incoming proxy failure: %s", ex)
+
+  async def run(self):
+    try:
+      await self.stream.wait_for_connection()
+      if self.stream.has_messaging_channel():
+        self.stream.set_message_handler(self.message_handler)
+        channel = self.stream.get_messaging_channel()
+        self.outgoing_bridge_runner.proxy.add_channel(channel)
+        self.outgoing_bridge_runner.start()
+      if self.stream.has_incoming_audio_track():
+        track = self.stream.get_incoming_audio_track(buffered=False)
+        self.audio_output = self.audio_output_cls()
+        self.audio_output.addTrack(track)
+        self.audio_output.start()
+      self.logger.info("Stream session (%s) connected", self.identifier)
+
+      await self.stream.wait_for_disconnection()
+      await self.post_run_cleanup()
+
+      self.logger.info("Stream session (%s) ended", self.identifier)
+    except Exception as ex:
+      self.logger.error("Stream session failure: %s", ex)
+
+  async def post_run_cleanup(self):
+    await self.stream.stop()
+    self.outgoing_bridge_runner.stop()
+    if self.audio_output:
+      self.audio_output.stop()
+
+
+@dataclass
+class StreamRequestBody:
+  sdp: str
+  cameras: List[str]
+  bridge_services_in: List[str] = field(default_factory=list)
+  bridge_services_out: List[str] = field(default_factory=list)
+
+
+async def get_stream(request: web.Request):
+  stream_dict, debug_mode = request.app['streams'], request.app['debug']
+  raw_body = await request.json()
+  body = StreamRequestBody(**raw_body)
+
+  session = StreamSession(body.sdp, body.cameras, body.bridge_services_in, body.bridge_services_out, debug_mode)
+  answer = await session.get_answer()
+  session.start()
+
+  stream_dict[session.identifier] = session
+
+  return web.json_response({"sdp": answer.sdp, "type": answer.type})
+
+
+async def on_shutdown(app: web.Application):
+  for session in app['streams'].values():
+    session.stop()
+  del app['streams']
+
+
+def webrtcd_thread(host: str, port: int, debug: bool):
+  logging.basicConfig(level=logging.CRITICAL, handlers=[logging.StreamHandler()])
+  logging_level = logging.DEBUG if debug else logging.INFO
+  logging.getLogger("WebRTCStream").setLevel(logging_level)
+  logging.getLogger("webrtcd").setLevel(logging_level)
+
+  app = web.Application()
+
+  app['streams'] = dict()
+  app['debug'] = debug
+  app.on_shutdown.append(on_shutdown)
+  app.router.add_post("/stream", get_stream)
+
+  web.run_app(app, host=host, port=port)
+
+
+def main():
+  parser = argparse.ArgumentParser(description="WebRTC daemon")
+  parser.add_argument("--host", type=str, default="0.0.0.0", help="Host to listen on")
+  parser.add_argument("--port", type=int, default=5001, help="Port to listen on")
+  parser.add_argument("--debug", action="store_true", help="Enable debug mode")
+  args = parser.parse_args()
+
+  webrtcd_thread(args.host, args.port, args.debug)
+
+
+if __name__=="__main__":
+  main()
diff --git a/teleoprtc b/teleoprtc
new file mode 120000
index 000000000..3d3dbc8de
--- /dev/null
+++ b/teleoprtc
@@ -0,0 +1 @@
+teleoprtc_repo/teleoprtc
\ No newline at end of file
diff --git a/teleoprtc_repo b/teleoprtc_repo
new file mode 160000
index 000000000..8ec477868
--- /dev/null
+++ b/teleoprtc_repo
@@ -0,0 +1 @@
+Subproject commit 8ec477868591eed9a6136a44f16428bc0468b4e9
diff --git a/tools/bodyteleop/bodyav.py b/tools/bodyteleop/bodyav.py
deleted file mode 100644
index 3f11f8d4f..000000000
--- a/tools/bodyteleop/bodyav.py
+++ /dev/null
@@ -1,159 +0,0 @@
-import asyncio
-import io
-import numpy as np
-import pyaudio
-import wave
-
-from aiortc.contrib.media import MediaBlackhole
-from aiortc.mediastreams import AudioStreamTrack, MediaStreamError, MediaStreamTrack
-from aiortc.mediastreams import VIDEO_CLOCK_RATE, VIDEO_TIME_BASE
-from aiortc.rtcrtpsender import RTCRtpSender
-from av import CodecContext, Packet
-from pydub import AudioSegment
-import cereal.messaging as messaging
-
-AUDIO_RATE = 16000
-SOUNDS = {
-  'engage': '../../selfdrive/assets/sounds/engage.wav',
-  'disengage': '../../selfdrive/assets/sounds/disengage.wav',
-  'error': '../../selfdrive/assets/sounds/warning_immediate.wav',
-}
-
-
-def force_codec(pc, sender, forced_codec='video/VP9', stream_type="video"):
-  codecs = RTCRtpSender.getCapabilities(stream_type).codecs
-  codec = [codec for codec in codecs if codec.mimeType == forced_codec]
-  transceiver = next(t for t in pc.getTransceivers() if t.sender == sender)
-  transceiver.setCodecPreferences(codec)
-
-
-class EncodedBodyVideo(MediaStreamTrack):
-  kind = "video"
-
-  _start: float
-  _timestamp: int
-
-  def __init__(self):
-    super().__init__()
-    sock_name = 'livestreamDriverEncodeData'
-    messaging.context = messaging.Context()
-    self.sock = messaging.sub_sock(sock_name, None, conflate=True)
-    self.pts = 0
-
-  async def recv(self) -> Packet:
-    while True:
-      msg = messaging.recv_one_or_none(self.sock)
-      if msg is not None:
-        break
-      await asyncio.sleep(0.005)
-
-    evta = getattr(msg, msg.which())
-    self.last_idx = evta.idx.encodeId
-
-    packet = Packet(evta.header + evta.data)
-    packet.time_base = VIDEO_TIME_BASE
-    packet.pts = self.pts
-    self.pts += 0.05 * VIDEO_CLOCK_RATE
-    return packet
-
-
-class WebClientSpeaker(MediaBlackhole):
-  def __init__(self):
-    super().__init__()
-    self.p = pyaudio.PyAudio()
-    self.buffer = io.BytesIO()
-    self.channels = 2
-    self.stream = self.p.open(format=pyaudio.paInt16, channels=self.channels, rate=48000, frames_per_buffer=9600,
-                              output=True, stream_callback=self.pyaudio_callback)
-
-  def pyaudio_callback(self, in_data, frame_count, time_info, status):
-    if self.buffer.getbuffer().nbytes < frame_count * self.channels * 2:
-      buff = np.zeros((frame_count, 2), dtype=np.int16).tobytes()
-    elif self.buffer.getbuffer().nbytes > 115200:  # 3x the usual read size
-      self.buffer.seek(0)
-      buff = self.buffer.read(frame_count * self.channels * 4)
-      buff = buff[:frame_count * self.channels * 2]
-      self.buffer.seek(2)
-    else:
-      self.buffer.seek(0)
-      buff = self.buffer.read(frame_count * self.channels * 2)
-      self.buffer.seek(2)
-    return (buff, pyaudio.paContinue)
-
-  async def consume(self, track):
-    while True:
-      try:
-        frame = await track.recv()
-      except MediaStreamError:
-        return
-      bio = bytes(frame.planes[0])
-      self.buffer.write(bio)
-
-  async def start(self):
-    for track, task in self._MediaBlackhole__tracks.items():
-      if task is None:
-        self._MediaBlackhole__tracks[track] = asyncio.ensure_future(self.consume(track))
-
-  async def stop(self):
-    for task in self._MediaBlackhole__tracks.values():
-      if task is not None:
-        task.cancel()
-    self._MediaBlackhole__tracks = {}
-    self.stream.stop_stream()
-    self.stream.close()
-    self.p.terminate()
-
-
-class BodyMic(AudioStreamTrack):
-  def __init__(self):
-    super().__init__()
-
-    self.sample_rate = AUDIO_RATE
-    self.AUDIO_PTIME = 0.020  # 20ms audio packetization
-    self.samples = int(self.AUDIO_PTIME * self.sample_rate)
-    self.FORMAT = pyaudio.paInt16
-    self.CHANNELS = 2
-    self.RATE = self.sample_rate
-    self.CHUNK = int(AUDIO_RATE * 0.020)
-    self.p = pyaudio.PyAudio()
-    self.mic_stream = self.p.open(format=self.FORMAT, channels=1, rate=self.RATE, input=True, frames_per_buffer=self.CHUNK)
-
-    self.codec = CodecContext.create('pcm_s16le', 'r')
-    self.codec.sample_rate = self.RATE
-    self.codec.channels = 2
-    self.audio_samples = 0
-    self.chunk_number = 0
-
-  async def recv(self):
-    mic_data = self.mic_stream.read(self.CHUNK)
-    mic_sound = AudioSegment(mic_data, sample_width=2, channels=1, frame_rate=self.RATE)
-    mic_sound = AudioSegment.from_mono_audiosegments(mic_sound, mic_sound)
-    mic_sound += 3  # increase volume by 3db
-    packet = Packet(mic_sound.raw_data)
-    frame = self.codec.decode(packet)[0]
-    frame.pts = self.audio_samples
-    self.audio_samples += frame.samples
-    self.chunk_number = self.chunk_number + 1
-    return frame
-
-
-async def play_sound(sound):
-  chunk = 5120
-  with wave.open(SOUNDS[sound], 'rb') as wf:
-    def callback(in_data, frame_count, time_info, status):
-      data = wf.readframes(frame_count)
-      return data, pyaudio.paContinue
-
-    p = pyaudio.PyAudio()
-    stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),
-                    channels=wf.getnchannels(),
-                    rate=wf.getframerate(),
-                    output=True,
-                    frames_per_buffer=chunk,
-                    stream_callback=callback)
-    stream.start_stream()
-    while stream.is_active():
-      await asyncio.sleep(0)
-    stream.stop_stream()
-    stream.close()
-    p.terminate()
diff --git a/tools/bodyteleop/static/js/jsmain.js b/tools/bodyteleop/static/js/jsmain.js
index f52190572..83205a876 100644
--- a/tools/bodyteleop/static/js/jsmain.js
+++ b/tools/bodyteleop/static/js/jsmain.js
@@ -1,5 +1,5 @@
 import { handleKeyX, executePlan } from "./controls.js";
-import { start, stop, last_ping } from "./webrtc.js";
+import { start, stop, lastChannelMessageTime, playSoundRequest } from "./webrtc.js";
 
 export var pc = null;
 export var dc = null;
@@ -9,10 +9,14 @@ document.addEventListener('keyup', (e)=>(handleKeyX(e.key.toLowerCase(), 0)));
 $(".keys").bind("mousedown touchstart", (e)=>handleKeyX($(e.target).attr('id').replace('key-', ''), 1));
 $(".keys").bind("mouseup touchend", (e)=>handleKeyX($(e.target).attr('id').replace('key-', ''), 0));
 $("#plan-button").click(executePlan);
+$(".sound").click((e)=>{
+  const sound = $(e.target).attr('id').replace('sound-', '')
+  return playSoundRequest(sound);
+});
 
 setInterval( () => {
   const dt = new Date().getTime();
-  if ((dt - last_ping) > 1000) {
+  if ((dt - lastChannelMessageTime) > 1000) {
     $(".pre-blob").removeClass('blob');
     $("#battery").text("-");
     $("#ping-time").text('-');
@@ -20,4 +24,4 @@ setInterval( () => {
   }
 }, 5000);
 
-start(pc, dc);
\ No newline at end of file
+start(pc, dc);
diff --git a/tools/bodyteleop/static/js/webrtc.js b/tools/bodyteleop/static/js/webrtc.js
index e2f6583c1..165a2ce6c 100644
--- a/tools/bodyteleop/static/js/webrtc.js
+++ b/tools/bodyteleop/static/js/webrtc.js
@@ -1,9 +1,34 @@
 import { getXY } from "./controls.js";
 import { pingPoints, batteryPoints, chartPing, chartBattery } from "./plots.js";
 
-export let dcInterval = null;
-export let batteryInterval = null;
-export let last_ping = null;
+export let controlCommandInterval = null;
+export let latencyInterval = null;
+export let lastChannelMessageTime = null;
+
+
+export function offerRtcRequest(sdp, type) {
+  return fetch('/offer', {
+    body: JSON.stringify({sdp: sdp, type: type}),
+    headers: {'Content-Type': 'application/json'},
+    method: 'POST'
+  });
+}
+
+
+export function playSoundRequest(sound) {
+  return fetch('/sound', {
+    body: JSON.stringify({sound}),
+    headers: {'Content-Type': 'application/json'},
+    method: 'POST'
+  });
+}
+
+
+export function pingHeadRequest() {
+  return fetch('/', {
+    method: 'HEAD'
+  });
+}
 
 
 export function createPeerConnection(pc) {
@@ -45,16 +70,7 @@ export function negotiate(pc) {
     });
   }).then(function() {
     var offer = pc.localDescription;
-    return fetch('/offer', {
-      body: JSON.stringify({
-        sdp: offer.sdp,
-        type: offer.type,
-      }),
-      headers: {
-        'Content-Type': 'application/json'
-      },
-      method: 'POST'
-    });
+    return offerRtcRequest(offer.sdp, offer.type);
   }).then(function(response) {
     console.log(response);
     return response.json();
@@ -86,25 +102,6 @@ export const constraints = {
 };
 
 
-export function createDummyVideoTrack() {
-  const canvas = document.createElement('canvas');
-  const context = canvas.getContext('2d');
-
-  const frameWidth = 5; // Set the width of the frame
-  const frameHeight = 5; // Set the height of the frame
-  canvas.width = frameWidth;
-  canvas.height = frameHeight;
-
-  context.fillStyle = 'black';
-  context.fillRect(0, 0, frameWidth, frameHeight);
-
-  const stream = canvas.captureStream();
-  const videoTrack = stream.getVideoTracks()[0];
-
-  return videoTrack;
-}
-
-
 export function start(pc, dc) {
   pc = createPeerConnection(pc);
 
@@ -138,71 +135,56 @@ export function start(pc, dc) {
       alert('Could not acquire media: ' + err);
     });
 
-  // add a fake video?
-  // const dummyVideoTrack = createDummyVideoTrack();
-  // const dummyMediaStream = new MediaStream();
-  // dummyMediaStream.addTrack(dummyVideoTrack);
-  // pc.addTrack(dummyVideoTrack, dummyMediaStream);
-
-  // setInterval(() => {pc.getStats(null).then((stats) => {stats.forEach((report) => console.log(report))})}, 10000)
-  // var video = document.querySelector('video');
-  // var print = function (e, f){console.log(e, f);  video.requestVideoFrameCallback(print);};
-  // video.requestVideoFrameCallback(print);
-
   var parameters = {"ordered": true};
   dc = pc.createDataChannel('data', parameters);
   dc.onclose = function() {
-    console.log("data channel closed");
-    clearInterval(dcInterval);
-    clearInterval(batteryInterval);
+    clearInterval(controlCommandInterval);
+    clearInterval(latencyInterval);
   };
-  function controlCommand() {
+
+  function sendJoystickOverDataChannel() {
     const {x, y} = getXY();
-    const dt = new Date().getTime();
-    var message = JSON.stringify({type: 'control_command', x, y, dt});
+    var message = JSON.stringify({type: "testJoystick", data: {axes: [x, y], buttons: [false]}})
     dc.send(message);
   }
-
-  function batteryLevel() {
-    var message = JSON.stringify({type: 'battery_level'});
-    dc.send(message);
+  function checkLatency() {
+    const initialTime = new Date().getTime();
+    pingHeadRequest().then(function() {
+      const currentTime = new Date().getTime();
+      if (Math.abs(currentTime - lastChannelMessageTime) < 1000) {
+        const pingtime = currentTime - initialTime;
+        pingPoints.push({'x': currentTime, 'y': pingtime});
+        if (pingPoints.length > 1000) {
+          pingPoints.shift();
+        }
+        chartPing.update();
+        $("#ping-time").text((pingtime) + "ms");
+      }
+    })
   }
-
   dc.onopen = function() {
-    dcInterval = setInterval(controlCommand, 50);
-    batteryInterval = setInterval(batteryLevel, 10000);
-    controlCommand();
-    batteryLevel();
-    $(".sound").click((e)=>{
-      const sound = $(e.target).attr('id').replace('sound-', '')
-      dc.send(JSON.stringify({type: 'play_sound', sound}));
-    });
+    controlCommandInterval = setInterval(sendJoystickOverDataChannel, 50);
+    latencyInterval = setInterval(checkLatency, 1000);
+    sendJoystickOverDataChannel();
   };
 
-  let val_print_idx = 0;
+  const textDecoder = new TextDecoder();
+  var carStaterIndex = 0;
   dc.onmessage = function(evt) {
-    const data = JSON.parse(evt.data);
-    if(val_print_idx == 0 && data.type === 'ping_time') {
-      const dt = new Date().getTime();
-      const pingtime = dt - data.incoming_time;
-      pingPoints.push({'x': dt, 'y': pingtime});
-        if (pingPoints.length > 1000) {
-        pingPoints.shift();
-      }
-      chartPing.update();
-      $("#ping-time").text((pingtime) + "ms");
-      last_ping = dt;
-      $(".pre-blob").addClass('blob');
-    }
-    val_print_idx = (val_print_idx + 1 ) % 20;
-    if(data.type === 'battery_level') {
-      $("#battery").text(data.value + "%");
-      batteryPoints.push({'x': new Date().getTime(), 'y': data.value});
-        if (batteryPoints.length > 1000) {
+    const text = textDecoder.decode(evt.data);
+    const msg = JSON.parse(text);
+    if (carStaterIndex % 100 == 0 && msg.type === 'carState') {
+      const batteryLevel = Math.round(msg.data.fuelGauge * 100);
+      $("#battery").text(batteryLevel + "%");
+      batteryPoints.push({'x': new Date().getTime(), 'y': batteryLevel});
+      if (batteryPoints.length > 1000) {
         batteryPoints.shift();
       }
       chartBattery.update();
     }
+    carStaterIndex += 1;
+    lastChannelMessageTime = new Date().getTime();
+    $(".pre-blob").addClass('blob');
   };
 }
 
diff --git a/tools/bodyteleop/web.py b/tools/bodyteleop/web.py
index 929cfa26f..2ec6eb037 100644
--- a/tools/bodyteleop/web.py
+++ b/tools/bodyteleop/web.py
@@ -1,208 +1,121 @@
 import asyncio
+import dataclasses
 import json
 import logging
 import os
 import ssl
-import uuid
-import time
+import subprocess
 
-# aiortc and its dependencies have lots of internal warnings :(
-import warnings
-warnings.resetwarnings()
-warnings.simplefilter("always")
+from aiohttp import web, ClientSession
+import pyaudio
+import wave
 
-from aiohttp import web
-from aiortc import RTCPeerConnection, RTCSessionDescription
-
-import cereal.messaging as messaging
 from openpilot.common.basedir import BASEDIR
-from openpilot.tools.bodyteleop.bodyav import BodyMic, WebClientSpeaker, force_codec, play_sound, MediaBlackhole, EncodedBodyVideo
+from openpilot.system.webrtc.webrtcd import StreamRequestBody
 
-from typing import Optional
-
-logger = logging.getLogger("pc")
+logger = logging.getLogger("bodyteleop")
 logging.basicConfig(level=logging.INFO)
 
-pcs: set[RTCPeerConnection] = set()
-pm: Optional[messaging.PubMaster] = None
-sm: Optional[messaging.SubMaster] = None
 TELEOPDIR = f"{BASEDIR}/tools/bodyteleop"
+WEBRTCD_HOST, WEBRTCD_PORT = "localhost", 5001
 
 
+## UTILS
+async def play_sound(sound):
+  SOUNDS = {
+    'engage': 'selfdrive/assets/sounds/engage.wav',
+    'disengage': 'selfdrive/assets/sounds/disengage.wav',
+    'error': 'selfdrive/assets/sounds/warning_immediate.wav',
+  }
+  assert sound in SOUNDS
+
+  chunk = 5120
+  with wave.open(os.path.join(BASEDIR, SOUNDS[sound]), 'rb') as wf:
+    def callback(in_data, frame_count, time_info, status):
+      data = wf.readframes(frame_count)
+      return data, pyaudio.paContinue
+
+    p = pyaudio.PyAudio()
+    stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),
+                    channels=wf.getnchannels(),
+                    rate=wf.getframerate(),
+                    output=True,
+                    frames_per_buffer=chunk,
+                    stream_callback=callback)
+    stream.start_stream()
+    while stream.is_active():
+      await asyncio.sleep(0)
+    stream.stop_stream()
+    stream.close()
+    p.terminate()
+
+## SSL
+def create_ssl_cert(cert_path, key_path):
+  try:
+    proc = subprocess.run(f'openssl req -x509 -newkey rsa:4096 -nodes -out {cert_path} -keyout {key_path} \
+                          -days 365 -subj "/C=US/ST=California/O=commaai/OU=comma body"',
+                          stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+    proc.check_returncode()
+  except subprocess.CalledProcessError as ex:
+    raise ValueError(f"Error creating SSL certificate:\n[stdout]\n{proc.stdout.decode()}\n[stderr]\n{proc.stderr.decode()}") from ex
+
+
+def create_ssl_context():
+  cert_path = os.path.join(TELEOPDIR, 'cert.pem')
+  key_path = os.path.join(TELEOPDIR, 'key.pem')
+  if not os.path.exists(cert_path) or not os.path.exists(key_path):
+    logger.info("Creating certificate...")
+    create_ssl_cert(cert_path, key_path)
+  else:
+    logger.info("Certificate exists!")
+  ssl_context = ssl.SSLContext(protocol=ssl.PROTOCOL_TLS_SERVER)
+  ssl_context.load_cert_chain(cert_path, key_path)
+
+  return ssl_context
+
+## ENDPOINTS
 async def index(request):
-  content = open(TELEOPDIR + "/static/index.html", "r").read()
-  now = time.monotonic()
-  request.app['mutable_vals']['last_send_time'] = now
-  request.app['mutable_vals']['last_override_time'] = now
-  request.app['mutable_vals']['prev_command'] = []
-  request.app['mutable_vals']['find_person'] = False
-
-  return web.Response(content_type="text/html", text=content)
+  with open(os.path.join(TELEOPDIR, "static", "index.html"), "r") as f:
+    content = f.read()
+    return web.Response(content_type="text/html", text=content)
 
 
-async def control_body(data, app):
-  now = time.monotonic()
-  if (data['type'] == 'dummy_controls') and (now < (app['mutable_vals']['last_send_time'] + 0.2)):
-    return
-  if (data['type'] == 'control_command') and (app['mutable_vals']['prev_command'] == [data['x'], data['y']] and data['x'] == 0 and data['y'] == 0):
-    return
-
-  logger.info(str(data))
-  x = max(-1.0, min(1.0, data['x']))
-  y = max(-1.0, min(1.0, data['y']))
-  dat = messaging.new_message('testJoystick')
-  dat.testJoystick.axes = [x, y]
-  dat.testJoystick.buttons = [False]
-  pm.send('testJoystick', dat)
-  app['mutable_vals']['last_send_time'] = now
-  if (data['type'] == 'control_command'):
-    app['mutable_vals']['last_override_time'] = now
-    app['mutable_vals']['prev_command'] = [data['x'], data['y']]
+async def ping(request):
+  return web.Response(text="pong")
 
 
-async def dummy_controls_msg(app):
-  while True:
-    if 'last_send_time' in app['mutable_vals']:
-      this_time = time.monotonic()
-      if (app['mutable_vals']['last_send_time'] + 0.2) < this_time:
-        await control_body({'type': 'dummy_controls', 'x': 0, 'y': 0}, app)
-    await asyncio.sleep(0.2)
+async def sound(request):
+  params = await request.json()
+  sound_to_play = params["sound"]
 
-
-async def start_background_tasks(app):
-  app['bgtask_dummy_controls_msg'] = asyncio.create_task(dummy_controls_msg(app))
-
-
-async def stop_background_tasks(app):
-  app['bgtask_dummy_controls_msg'].cancel()
-  await app['bgtask_dummy_controls_msg']
+  await play_sound(sound_to_play)
+  return web.json_response({"status": "ok"})
 
 
 async def offer(request):
-  logger.info("\n\n\nnewoffer!\n\n")
-
   params = await request.json()
-  offer = RTCSessionDescription(sdp=params["sdp"], type=params["type"])
-  speaker = WebClientSpeaker()
-  blackhole = MediaBlackhole()
+  body = StreamRequestBody(params["sdp"], ["driver"], ["testJoystick"], ["carState"])
+  body_json = json.dumps(dataclasses.asdict(body))
 
-  pc = RTCPeerConnection()
-  pc_id = "PeerConnection(%s)" % uuid.uuid4()
-  pcs.add(pc)
-
-  def log_info(msg, *args):
-    logger.info(pc_id + " " + msg, *args)
-
-  log_info("Created for %s", request.remote)
-
-  @pc.on("datachannel")
-  def on_datachannel(channel):
-    request.app['mutable_vals']['remote_channel'] = channel
-
-    @channel.on("message")
-    async def on_message(message):
-      data = json.loads(message)
-      if data['type'] == 'control_command':
-        await control_body(data, request.app)
-        times = {
-          'type': 'ping_time',
-          'incoming_time': data['dt'],
-          'outgoing_time': int(time.time() * 1000),
-        }
-        channel.send(json.dumps(times))
-      if data['type'] == 'battery_level':
-        sm.update(timeout=0)
-        if sm.updated['carState']:
-          channel.send(json.dumps({'type': 'battery_level', 'value': int(sm['carState'].fuelGauge * 100)}))
-      if data['type'] == 'play_sound':
-        logger.info(f"Playing sound: {data['sound']}")
-        await play_sound(data['sound'])
-      if data['type'] == 'find_person':
-        request.app['mutable_vals']['find_person'] = data['value']
-
-  @pc.on("connectionstatechange")
-  async def on_connectionstatechange():
-    log_info("Connection state is %s", pc.connectionState)
-    if pc.connectionState == "failed":
-      await pc.close()
-      pcs.discard(pc)
-
-  @pc.on('track')
-  def on_track(track):
-    logger.info(f"Track received: {track.kind}")
-    if track.kind == "audio":
-      speaker.addTrack(track)
-    elif track.kind == "video":
-      blackhole.addTrack(track)
-
-    @track.on("ended")
-    async def on_ended():
-      log_info("Remote %s track ended", track.kind)
-      if track.kind == "audio":
-        await speaker.stop()
-      elif track.kind == "video":
-        await blackhole.stop()
-
-  video_sender = pc.addTrack(EncodedBodyVideo())
-  force_codec(pc, video_sender, forced_codec='video/H264')
-  _ = pc.addTrack(BodyMic())
-
-  await pc.setRemoteDescription(offer)
-  await speaker.start()
-  await blackhole.start()
-  answer = await pc.createAnswer()
-  await pc.setLocalDescription(answer)
-
-  return web.Response(
-    content_type="application/json",
-    text=json.dumps(
-      {"sdp": pc.localDescription.sdp, "type": pc.localDescription.type}
-    ),
-  )
-
-
-async def on_shutdown(app):
-  coros = [pc.close() for pc in pcs]
-  await asyncio.gather(*coros)
-  pcs.clear()
-
-
-async def run(cmd):
-  proc = await asyncio.create_subprocess_shell(
-    cmd,
-    stdout=asyncio.subprocess.PIPE,
-    stderr=asyncio.subprocess.PIPE
-  )
-  stdout, stderr = await proc.communicate()
-  logger.info("Created key and cert!")
-  if stdout:
-    logger.info(f'[stdout]\n{stdout.decode()}')
-  if stderr:
-    logger.info(f'[stderr]\n{stderr.decode()}')
+  logger.info("Sending offer to webrtcd...")
+  webrtcd_url = f"http://{WEBRTCD_HOST}:{WEBRTCD_PORT}/stream"
+  async with ClientSession() as session, session.post(webrtcd_url, data=body_json) as resp:
+    assert resp.status == 200
+    answer = await resp.json()
+    return web.json_response(answer)
 
 
 def main():
-  global pm, sm
-  pm = messaging.PubMaster(['testJoystick'])
-  sm = messaging.SubMaster(['carState', 'logMessage'])
   # App needs to be HTTPS for microphone and audio autoplay to work on the browser
-  cert_path = TELEOPDIR + '/cert.pem'
-  key_path = TELEOPDIR + '/key.pem'
-  if (not os.path.exists(cert_path)) or (not os.path.exists(key_path)):
-    asyncio.run(run(f'openssl req -x509 -newkey rsa:4096 -nodes -out {cert_path} -keyout {key_path} \
-                     -days 365 -subj "/C=US/ST=California/O=commaai/OU=comma body"'))
-  else:
-    logger.info("Certificate exists!")
-  ssl_context = ssl.SSLContext()
-  ssl_context.load_cert_chain(cert_path, key_path)
+  ssl_context = create_ssl_context()
+
   app = web.Application()
   app['mutable_vals'] = {}
-  app.on_shutdown.append(on_shutdown)
-  app.router.add_post("/offer", offer)
   app.router.add_get("/", index)
-  app.router.add_static('/static', TELEOPDIR + '/static')
-  app.on_startup.append(start_background_tasks)
-  app.on_cleanup.append(stop_background_tasks)
+  app.router.add_get("/ping", ping, allow_head=True)
+  app.router.add_post("/offer", offer)
+  app.router.add_post("/sound", sound)
+  app.router.add_static('/static', os.path.join(TELEOPDIR, 'static'))
   web.run_app(app, access_log=None, host="0.0.0.0", port=5000, ssl_context=ssl_context)