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Gracefully handle TCP client disconnections

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Prevent premature client disconnections during reading from triggering
unhandled exceptions in TCP connection handling code.

(cherry picked from commit e4c3186a7c)
This commit is contained in:
Michał Kępień 2025-03-18 16:28:18 +01:00
parent 5316ccf083
commit cb9420b8cf
1 changed files with 4 additions and 0 deletions
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4
bin/tests/system/isctest/asyncserver.py
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@ -542,10 +542,14 @@ class AsyncDnsServer(AsyncServer):
peer = Peer(peer_info[0], peer_info[1])
wire_length_bytes = await reader.read(2)
if len(wire_length_bytes) < 2:
return
(wire_length,) = struct.unpack("!H", wire_length_bytes)
logging.debug("Receiving TCP message (%d octets)...", wire_length)
wire = await reader.read(wire_length)
if len(wire) < wire_length:
return
full_message = wire_length_bytes + wire
logging.debug("Received complete TCP message: %s", full_message.hex())