sockets test

import socket
import struct
from datetime import datetime

TOPICS = (
    "id",
    "row",
    "cycle",
    "capacity",
    "error",
    "voltage",
    "current",
    "charge",
    "temperature",
    "timestamp",
)
ST = struct.Struct("<5i9f")
BROADCAST = "255.255.255.255"
PORT = 2020
ADDR = (BROADCAST, PORT)


print("Size:", ST.size)

with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
    sock.bind(ADDR)
    while data := sock.recvfrom(ST.size):
        msg, (ip, port) = data
        size = len(msg)
        if size != ST.size:
            continue
        result = dict(zip(TOPICS, (ST.unpack(msg))))
        try:
            result["timestamp"] = datetime.fromtimestamp(result["timestamp"])
        except ArithmeticError:
            pass
        print(result)