QUERY · ISSUE

ussl.wrap_socket: option for pre-allocated buffer

openby fragmuffinopened 2021-10-04updated 2022-05-13

Wrapping a socket requires ~16kB of RAM.
When memory is heavily fragmented, wrapping a socket will fail:

>>> secure_socket = ussl.wrap_socket(...)
MemoryError: memory allocation failed, allocating 16725 bytes

Instead, it could be possible to pre-allocate the memory (early in runtime), and share that with the wrapped socket... for example:

buf = bytearray(16725)
secure_socket = ussl.wrap_socket(..., buf=buf)

CANDIDATE · ISSUE

unix: SSL client socket, exists unexpectedly upon wrap_sockets().

closedby hosakaopened 2016-10-31updated 2017-05-14

Running a unix port:

MicroPython v1.8.5-62-g964fb24-dirty on 2016-10-31; linux version

The following code throws me back to my terminal without any messages, a quick look suggest that mp_stream_posix_read doesn't return.

import usocket
import ussl

s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
ss = ussl.wrap_socket(s)

Wrapping with server_size=True however, works as expected.