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  1. Qt
  2. QTBUG-50124

QTcpSocket connectToHost after bind can hang qt main thread

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.6.0
    • 5.5.1
    • Network
    • None
    • 6b6955c2ffdb23c461812ffcda12a2296ef58513

    Description

      My host has many ip addresses and need to send packets from correct ip, so where is need to use QTcpSocket bind.
      If remote host reject connection - qt hangs in infinity loop in QIODevicePrivateLinearBuffer::makeSpace (with newCapacity == 0)

      while (newCapacity < required)
      newCapacity *= 2;

      Simple example attached.

      Attachments

        1. main.cpp
          0.5 kB
        2. main.pro
          0.1 kB

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-51343 Sockets: Application may hang on exit if bytesAvailable is -1 in QAbstractSocketPrivate::readFromSocket()

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-50124
          # Subject Branch Project Status CR V
          144687,2 QAbstractSocket: do not enable read notifications on TCP in bind() 5.5 qt/qtbase Status: MERGED +2 0

          Activity

            People

              alex1973tr Alex Trotsenko
              aaa aaa
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              Dates

                Created:
                Updated:
                Resolved:

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