woggioni
ca023580e4
- AsgiContext and AsgiWebSocket now default missing scope key to 'http' / 'ws' respectively (Daphne omits it for websocket scopes) - Add regression test for websocket scope without scheme - Update example/session.py WS handler to read the session; cookie must be set via HTTP first because common ASGI servers ignore the headers field on websocket.accept - Update README with the same caveat about Granian/Daphne/curl
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
from kaya.core import HttpContext, KayaApp, WebSocket
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from kaya.session import InMemorySessionStore, SessionMixin
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app = KayaApp(mixins=[SessionMixin(InMemorySessionStore())])
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@app.GET('/')
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async def home(ctx: HttpContext) -> None:
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visits = ctx.session.get('visits', 0) + 1
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ctx.session['visits'] = visits
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await ctx.send_str(200, f'visits: {visits}')
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@app.GET('/read')
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async def read(ctx: HttpContext) -> None:
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visits = ctx.session.get('visits', 0)
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await ctx.send_str(200, f'visits: {visits}')
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@app.GET('/clear')
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async def clear(ctx: HttpContext) -> None:
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ctx.session.invalidate()
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await ctx.send_str(200, 'session cleared')
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@app.websocket('/echo')
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async def echo(ws: WebSocket) -> None:
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await ws.accept()
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async for msg in ws:
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if msg.kind == 'text':
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await ws.send_text(f"echo: {msg.data}")
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elif msg.kind == 'binary':
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data = msg.data
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assert isinstance(data, bytes)
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await ws.send_bytes(data)
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@app.websocket('/ws/visits')
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async def ws_visits(ws: WebSocket) -> None:
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# WebSocket handlers can read the existing session. Most ASGI servers
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# (including Granian and Daphne) do not forward the `headers` field of the
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# `websocket.accept` message into the HTTP 101 response, so a new session
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# cookie cannot be set during the handshake. Use the HTTP `/` endpoint to
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# set or refresh the session cookie before connecting here.
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await ws.accept()
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visits = ws.session.get('visits', 0)
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await ws.send_text(f'visits: {visits}')
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