Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-39831

QClipboard::changed not emitted when a QLocalSocket abnormally disconnects

    XMLWordPrintable

Details

    • Bug
    • Resolution: Duplicate
    • P1: Critical
    • None
    • 5.3.0
    • Core: Other
    • None
    • Windows 7, 32bit, Qt5.3, MSVC 2013

    Description

      Setup is 2 applications:

      1 app listens for clipboard changes via QClipboard::changed(), it also runs a QLocalServer listening for client connections.

      A second app connects to the clipboard listener application’s local socket.

      In the event that a client connected to the listener exits abnormally (crash, force close, ctrl+c console app etc), then the listener application sees this disconnect but receives no further QClipboard::changed signals.

      Difficult to show with a simple test, so i have included 2 small apps that demonstrate the problem:

      Steps:
      1. Run the listener application
      2. copy something to check for correct console output
      3. start a Client instance, copy something else again, checking for correct output (changed() signal emitted)
      4. ctrl+c the client app.
      5. copy again, no console output emitted (changed() signal not emitted)

      I also tried using TcpSockets/Server instead, observed the same behaviour.

      If the client app disconnects normally, calling disconnectFromServer then the listener application will continue to receive QClipboard::changed signals.

      Attachments

        1. client.cpp
          0.3 kB
          Neil Williams
        2. client.pro
          0.3 kB
          Neil Williams
        3. listener.cpp
          0.7 kB
          Neil Williams
        4. listener.pro
          0.3 kB
          Neil Williams

        Issue Links

          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              Unassigned Unassigned
              neil Neil Williams
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes