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#!/usr/bin/env python
import argparse
import asyncio
import json
import logging
import websockets
import aioice
STUN_SERVER = ("stun.l.google.com", 19302)
WEBSOCKET_URI = "ws://127.0.0.1:8765"
async def offer(components: int) -> None:
connection = aioice.Connection(
ice_controlling=True, components=components, stun_server=STUN_SERVER
)
await connection.gather_candidates()
websocket = await websockets.connect(WEBSOCKET_URI)
# send offer
await websocket.send(
json.dumps(
{
"candidates": [c.to_sdp() for c in connection.local_candidates],
"password": connection.local_password,
"username": connection.local_username,
}
)
)
# await answer
message = json.loads(await websocket.recv())
print("received answer", message)
for c in message["candidates"]:
await connection.add_remote_candidate(aioice.Candidate.from_sdp(c))
await connection.add_remote_candidate(None)
connection.remote_username = message["username"]
connection.remote_password = message["password"]
await websocket.close()
await connection.connect()
print("connected")
# send data
data = b"hello"
component = 1
print("sending %s on component %d" % (repr(data), component))
await connection.sendto(data, component)
data, component = await connection.recvfrom()
print("received %s on component %d" % (repr(data), component))
await asyncio.sleep(5)
await connection.close()
async def answer(components: int) -> None:
connection = aioice.Connection(
ice_controlling=False, components=components, stun_server=STUN_SERVER
)
await connection.gather_candidates()
websocket = await websockets.connect(WEBSOCKET_URI)
# await offer
message = json.loads(await websocket.recv())
print("received offer", message)
for c in message["candidates"]:
await connection.add_remote_candidate(aioice.Candidate.from_sdp(c))
await connection.add_remote_candidate(None)
connection.remote_username = message["username"]
connection.remote_password = message["password"]
# send answer
await websocket.send(
json.dumps(
{
"candidates": [c.to_sdp() for c in connection.local_candidates],
"password": connection.local_password,
"username": connection.local_username,
}
)
)
await websocket.close()
await connection.connect()
print("connected")
# echo data back
data, component = await connection.recvfrom()
print("echoing %s on component %d" % (repr(data), component))
await connection.sendto(data, component)
await asyncio.sleep(5)
await connection.close()
async def main() -> None:
parser = argparse.ArgumentParser(description="ICE tester")
parser.add_argument("action", choices=["offer", "answer"])
parser.add_argument("--components", type=int, default=1)
options = parser.parse_args()
logging.basicConfig(level=logging.DEBUG)
if options.action == "offer":
await offer(options.components)
else:
await answer(options.components)
if __name__ == "__main__":
asyncio.run(main())
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