harden UBX parsing/dispatch and report peer-side disconnects in GUI

A struct size-mismatch or any other parse error in a listener could
propagate uncaught out of the socket-reading thread and silently kill
it. Catch broadly in the event loop and per-listener in call_listener,
and make the NAV-SAT/NAV-SIG/RXM-RAWX group parsers tolerate a
payload length that isn't an exact multiple of the group size instead
of crashing on a short struct.unpack.

Also wire NetworkBackend's socket-loss detection through to
ReceiverManager (via a queued signal, since the callback fires from
the backend thread) so the GUI reflects a peer-initiated disconnect
instead of leaving the row stuck showing "connected". Verified against
a real ZED-X20P: it drops the TCP session on its own after ~20-28s
regardless of traffic; the GUI now marks the receiver disconnected and
frees its ID for reconnecting.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AzmCaNjDb3TAqPpTwunKTY

This commit is contained in:

jens

2026-07-15 22:00:29 +02:00

co-authored by

Claude Sonnet 5

parent 3f6f403b7b

commit b3447a28c5

5 changed files with 31 additions and 7 deletions

									
										msg/talker.py
									
		+5
		-2
	
												View File
												
				@@ -11,5 +11,8 @@ class MsgTalker(ABC):

					def call_listener(self, msg: MsgContainer):

						for sink in self.sinks:

							if sink.is_msg(msg):

								sink.on_recv(msg)

							try:

								if sink.is_msg(msg):

									sink.on_recv(msg)

							except Exception as exc:

								print(f"Listener {sink.__class__.__name__} failed on {msg}: {exc}")