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Retrieve credentials from SO_PEERCRED option
:param sock_object: Socket object
:return: uid of user, which connects to this socket.
3I)
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Prefix message with a 4-byte length
:param data_dict: Data dict for send
:return: byte array for send to socket
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Read amount data from socket
:param sock_object: Socket object to read data from
:param num_bytes: Bytes number to read
:param timeout_sec: Read timeout, None - timeout expired, data not received
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Send a dictionary to a socket connection and close it.
This is a fire-and-forget terminal send. It never re-raises socket
I/O errors to the caller — callers in daemon.py and
daemon_subscription_handler.py already treat it that way (no
try/except around the call). Delivery failures are logged at
WARNING level only; the socket is always closed on the way out
(best-effort).
The function does still propagate programming errors (e.g.,
TypeError from a non-serializable dict) so they surface during
development instead of being silently swallowed.
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