WebSocket connector for Ypy
Project description
ypy-websocket
ypy-websocket is an async WebSocket connector for Ypy.
Usage
Client
Here is a code example:
import asyncio
from websockets import connect
from ypy_websocket import YDoc, WebsocketProvider
async def client():
ydoc = YDoc()
websocket = await connect("ws://localhost:1234/my-roomname")
WebsocketProvider(ydoc, websocket)
ymap = ydoc.get_map("map")
with ydoc.begin_transaction() as t:
ymap.set(t, "key", "value")
asyncio.run(client())
Note that YDoc has to be imported from ypy_websocket instead of y_py. This will change in the
future, when y_py has the necessary event handlers. ypy_websocket.YDoc is a subclass of
y_py.YDoc.
Server
Here is a code example:
import asyncio
from websockets import serve
from ypy_websocket import WebsocketServer
async def server():
websocket_server = WebsocketServer()
async with serve(websocket_server.serve, "localhost", 1234):
await asyncio.Future() # run forever
asyncio.run(server())
WebSocket API
The WebSocket object passed to WebsocketProvider and WebsocketServer.serve must respect the
following API:
class WebSocket:
@property
def path(self) -> str:
# can be e.g. the URL path
# or a room identifier
return "my-roomname"
def __aiter__(self):
return self
async def __anext__(self) -> bytes:
# async iterator for receiving messages
# until the connection is closed
try:
message = await self.recv()
except:
raise StopAsyncIteration()
return message
async def send(self, message: bytes):
# send message
pass
async def recv(self) -> bytes:
# receive message
return b""
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