import asyncio
import itertools
from fastapi import FastAPI
from fastapi.responses import HTMLResponse
from sse_starlette.sse import EventSourceResponse
"""
https://github.com/sysid/sse-starlette/issues/132
# Run uvicorn
$ uvicorn issue132:app
# Open the app in a browser
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO: 127.0.0.1:49184 - "GET /events HTTP/1.1" 200 OK
# Press CTRL+C to stop the server
^CINFO: Shutting down
INFO: Waiting for connections to close. (CTRL+C to force quit)
"""
app = FastAPI()
@app.get("/")
async def index() -> HTMLResponse:
return HTMLResponse(
"""
SSE ASGI tests0
"""
)
@app.get("/events")
async def event_source() -> EventSourceResponse:
async def event_generator():
for x in itertools.count():
yield x
await asyncio.sleep(1)
return EventSourceResponse(event_generator(), media_type="text/event-stream")
if __name__ == "__main__":
import uvicorn
uvicorn.main()
# uvicorn.run(app, host="0.0.0.0", port=8000, log_level="info")