MicroPython Forum (Archive)

Is this the appropriate way to use timeouts on nonblocking sockets with asyncio?... I thought you were using blocking sockets. You can't use timeouts with nonblocking sockets as read(n) always returns immediately. With nonblocking sockets you need to explicitly code timeouts. The code here is an ex...

Thanks for the advice — I've swapped over to using await asyncio.wait_for(reader.read(X), Y) but it isn't raising a TimeoutError even if the socket is connected to an unreachable IP (the program hangs on that line). Is this the appropriate way to use timeouts on nonblocking sockets with asyncio? On ...

I am using getaddrinfo, but directly on an IP address (1.1.1.1) so that I can create a socket to the DNS server — I'm doing the DNS lookup manually. That's not the line that is freezing though, it's the "await reader.read(8)" after a "writer.write" and "await writer.drain".

Hi everyone, I have a uasyncio task running on an ESP8266 which sends DNS lookups (UDP). I'm using uasyncio.StreamReader (and writer) on the socket object to do this asynchronously. Most requests are successful, but sometimes the task indefinitely hangs on "await reader.read(128)", which is reading ...