QUERY · ISSUE

extmod/uasyncio: add serve_forever()?

openby belyalovopened 2020-04-06updated 2020-04-07

extmod

Official example from python documentation:

async def main():
    # Get a reference to the event loop as we plan to use
    # low-level APIs.
    loop = asyncio.get_running_loop()

    server = await loop.create_server(
        lambda: EchoServerProtocol(),
        '127.0.0.1', 8888)

    async with server:
        await server.serve_forever()


asyncio.run(main())

Micropython's Server class already has support for async with, but lacks convenient method serve_forever.

Do you think it is make sense to add it?

CANDIDATE · ISSUE

uasyncio Event unexpected behaviour with only one task

closedby peterhinchopened 2021-02-13updated 2024-09-13

[EDIT] Apologies, @kevinkk525 has pointed out that this is a duplcate of https://github.com/micropython/micropython/issues/5843

This prints "start" then runs to completion where I would expect it to wait indefinitely on the Event:

import uasyncio as asyncio

evt = asyncio.Event()

async def main_loop():
    while True:
        print("start")
        await evt.wait()
        await asyncio.sleep(1)
        print("Got event")

asyncio.run(main_loop())

If an additional task is running the main_loop task behaves as expected, waiting forever:

import uasyncio as asyncio

evt = asyncio.Event()

async def main_loop():
    while True:
        print("start")
        await evt.wait()
        await asyncio.sleep(1)
        print("Got event")

async def main():
    asyncio.create_task(main_loop())
    while True:
        await asyncio.sleep(1)

asyncio.run(main())

extmod/uasyncio: add serve_forever()?

uasyncio Event unexpected behaviour with only one task

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