socketpool.Socket is missing getaddrinfo

[johncblacker]

Documentation includes:
socket.getaddrinfo(host: str, port: int) → Tuple[int, int, int, str, str]
Gets the address information for a hostname and port

Returns the appropriate family, socket type, socket protocol and address information to call socket.socket() and socket.connect() with, as a tuple.
But it has not been implemented on the esp32-s2 port. Just wanted to insert this as a reminder.

[anecdata]

See RTD:

>>> import wifi
>>> import socketpool
>>> from secrets import secrets
>>> 
>>> wifi.radio.connect(secrets['ssid'], secrets['password'])
>>> 
>>> pool = socketpool.SocketPool(wifi.radio)
>>> pool.getaddrinfo("adafruit.com", 443)
[(0, 0, 0, '', ('104.20.38.240', 443))]
>>> 

This is old, not used. This is for native (ESP32-S2) Socket.

Apologies if I'm misunderstanding the issue. Family can be AF_INET or AF_INET6, though AF_INET6 is not currently supported (will raise exception). Type can be STREAM, DGRAM, or RAW. STREAM and DGRAM should be fine, I'm unsure about support status for RAW. Proto is currently inferred from Family, and can be IP or IPV6, though again IPV6 is currently unsupported (will raise exception).

Addendum: I think I see the issue. Although getaddrinfo returns IP and port accurately, looks like Family, Type, and Proto are currently hard-coded and will always be returned as 0,0,0 (AF_INET, STREAM, IP). e.g.,

>>> pool.getaddrinfo("pool.ntp.org", 123)
[(0, 0, 0, '', ('13.86.101.172', 123))]
>>> pool.getaddrinfo("pool.ntp.org", 123, type=pool.SOCK_DGRAM)
[(0, 0, 0, '', ('13.86.101.172', 123))]

[PaulskPt]

My MAGTAG date and time app was running OK for months. Recently the script started crashing.
In this moment I am getting OSError -2 on a MAGTAG.
The MAGTAG is flashed with:
Adafruit CircuitPython 7.1.1 on 2022-01-14; Adafruit MagTag with ESP32S2
Board ID:adafruit_magtag_2.9_grayscale

Script crashes here with OSError -2:

In file adafruit_requests.py, line 536
addr_info = self._socket_pool.getaddrinfo( host, port, 0, self._socket_pool.SOCK_STREAM )[0]

whereas:
self._socket_pool = <SocketPool>

where also:
ping google.com (8.8.8.8) timed-out
ping google.com (8.8.4.4) timed-out
ping router in LAN 9.0 mSec
WiFi connected to LAN access-point
IP address received: 192.168.1.101

proto = 'https:'
host = 'io.adafruit.com'
port = 443
timeout = 60
addr_info = 0

This is the boot info the ESP32s2 is sending via TX:

[tannewt]

@PaulskPt please open a new issue. I'm not sure your issue is related to this one.

[PaulskPt]

OK

[PaulskPt]

@tannewt You know what? I took out the calls to wifi.radio.ping() because all ping efforts into WAN resulted in a timed-out error. Only the ping to the router in the LAN was positive. Because I read in a discussion of issue #3836 that a timed-out ping caused the socket to be closed, I commented-out the block of ping commands. Then the script ran as expected ! Problem solved!

Just for the record the latest results:

Some defines and print statements I added for debugging purposes:
socket = <SSLSocket>
request() params: host: io.adafruit.com, port: 443, proto: 'https:', timeout: 60
Session._get_socket(): self._socket_pool = <SocketPool>
spss = self._socket_pool.SOCK_STREAM
ai = self._socket_pool.getaddrinfo(host, port, 0, spss)
addr_info = ai[0]

host = io.adafruit.com
port = 443
spss = 0
addr_info = [(0, 0, 0, '', ('52.54.163.195', 443))]

result : <Response object at 0x3fd8e8f0>
2022-02-08 19:46:10.179 039 2 +0000 WET

[PaulskPt]

@tannewt The script ran already uninterrupted from yesterday 19:46 local until this moment in the next morning.