If there is a queue of sockets to accept, accept() does not always clear it, some sockets seem to get "lost", they are still open but accept() will not accept them, it just blocks.

Steps to reproduce

I'm attaching two programs - main.py and client.py. Run client.py on a connected system, under normal python3. Run main.py on an esp8266. Supply the address of the esp8266 as a command line parameter.

Expected results

Despite the sleep(0.25), the sockets should queued and be accepted eventually.

Output should be, for example:

Socks connected: 4
b'Accept 0'
b'Accept 1'
b'Accept 2'
b'Accept 3'

And running the program >1 time should also succeed.

Actual results:

Socks connected: 4
b'Accept 0'
b'Accept 1'
b''
b''