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  1. Qt
  2. QTBUG-114321

ICMP packet about unreachable port triggers readyRead in QUdpSocket

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    • Windows

    Description

      Sending UDP packet to a closed port causes ICMP packat about the closed port to be delivered. That seems to trigger readyRead in QUdpSocket.

      This happens on Windows 10 and reportedly in Ubuntu 23.04 (I could not reproduce on 22.04 even though I can see the ICMP being delivered).

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          Bug - A problem which impairs or prevents the functions of the product. QTBUG-49301 QUdpSocket spurious readyRead signals when sending datagrams on Windows Desktop

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              manordheim Mårten Nordheim
              poikelin Joni Poikelin
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                Resolved:

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