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107 lines
3.7 KiB
Python
Executable file
107 lines
3.7 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# Test client for simple room-based multi-peer p2p calling
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#
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# Copyright (C) 2017 Centricular Ltd.
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#
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# Author: Nirbheek Chauhan <nirbheek@centricular.com>
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#
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import sys
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import ssl
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import json
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import uuid
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import asyncio
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import websockets
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import argparse
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parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument('--url', default='wss://localhost:8443', help='URL to connect to')
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parser.add_argument('--room', default=None, help='the room to join')
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options = parser.parse_args(sys.argv[1:])
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SERVER_ADDR = options.url
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PEER_ID = 'ws-test-client-' + str(uuid.uuid4())[:6]
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ROOM_ID = options.room
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if ROOM_ID is None:
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print('--room argument is required')
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sys.exit(1)
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sslctx = False
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if SERVER_ADDR.startswith(('wss://', 'https://')):
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sslctx = ssl.create_default_context()
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# FIXME
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sslctx.check_hostname = False
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sslctx.verify_mode = ssl.CERT_NONE
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def get_answer_sdp(offer, peer_id):
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# Here we'd parse the incoming JSON message for ICE and SDP candidates
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print("Got: " + offer)
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sdp = json.dumps({'sdp': 'reply sdp'})
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answer = 'ROOM_PEER_MSG {} {}'.format(peer_id, sdp)
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print("Sent: " + answer)
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return answer
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def get_offer_sdp(peer_id):
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sdp = json.dumps({'sdp': 'initial sdp'})
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offer = 'ROOM_PEER_MSG {} {}'.format(peer_id, sdp)
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print("Sent: " + offer)
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return offer
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async def hello():
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async with websockets.connect(SERVER_ADDR, ssl=sslctx) as ws:
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await ws.send('HELLO ' + PEER_ID)
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assert(await ws.recv() == 'HELLO')
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await ws.send('ROOM {}'.format(ROOM_ID))
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sent_offers = set()
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# Receive messages
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while True:
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msg = await ws.recv()
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if msg.startswith('ERROR'):
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# On error, we bring down the webrtc pipeline, etc
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print('{!r}, exiting'.format(msg))
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return
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if msg.startswith('ROOM_OK'):
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print('Got ROOM_OK for room {!r}'.format(ROOM_ID))
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_, *room_peers = msg.split()
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for peer_id in room_peers:
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print('Sending offer to {!r}'.format(peer_id))
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# Create a peer connection for each peer and start
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# exchanging SDP and ICE candidates
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await ws.send(get_offer_sdp(peer_id))
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sent_offers.add(peer_id)
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continue
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elif msg.startswith('ROOM_PEER'):
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if msg.startswith('ROOM_PEER_JOINED'):
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_, peer_id = msg.split(maxsplit=1)
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print('Peer {!r} joined the room'.format(peer_id))
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# Peer will send us an offer
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continue
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if msg.startswith('ROOM_PEER_LEFT'):
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_, peer_id = msg.split(maxsplit=1)
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print('Peer {!r} left the room'.format(peer_id))
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continue
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elif msg.startswith('ROOM_PEER_MSG'):
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_, peer_id, msg = msg.split(maxsplit=2)
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if peer_id in sent_offers:
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print('Got answer from {!r}: {}'.format(peer_id, msg))
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continue
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print('Got offer from {!r}, replying'.format(peer_id))
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await ws.send(get_answer_sdp(msg, peer_id))
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continue
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print('Unknown msg: {!r}, exiting'.format(msg))
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return
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print('Our uid is {!r}'.format(PEER_ID))
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try:
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asyncio.get_event_loop().run_until_complete(hello())
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except websockets.exceptions.InvalidHandshake:
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print('Invalid handshake: are you sure this is a websockets server?\n')
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raise
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except ssl.SSLError:
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print('SSL Error: are you sure the server is using TLS?\n')
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raise
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