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  1. Qt
  2. QTBUG-32534

Corrupted QHttpMultiPart MIME multipart message

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 4.8.6, 5.1.1
    • 4.8.4, 4.8.5, 5.1.0
    • Network
    • Microsoft Windows XP Professional 32-bit SP3
      MinGW 4.8 (included with Qt 5.1.0)
    • 4.8: 1f40ed553e618c3b0511c7db4b4fd26c2d2b65bf , 5.1: af96c6fed931564c95037539f07e9c8e33c69529

    Description

      The multipart data seems corrupted in some cases (test case attached):

      0014110: 5858 5858 5858 5858 a507 2202 0100 0000  XXXXXXXX..".....
      0014120: 2d00 0000 2e00 0000 1000 0000 2d2d 626f  -...........--bo
      0014130: 756e 6461 7279 5f2e 6f4f 6f2e 5f4d 5449  undary_.oOo._MTI
      0014140: 774d 7a63 3d4e 7a67 354d 673d 3d4d 5449  wMzc=Nzg5Mg==MTI
      

      The data being attached is a byte array filled with X characters. Notice the random data between the XXXXX and --boundary. I tested this uploading from a Windows system to a Linux server running nc -l -p 12000 connected by 100 Mbit ethernet switch.

      The corruption does not occur uploading from a Linux system to localhost. I have attached the data that was received in binary and also as a xxd hex dump.

      Attachments

        1. dump.bin
          80 kB
        2. dump.txt
          341 kB
        3. multipart_corruption.cpp
          2 kB
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            peter-har Peter Hartmann
            net147 Jonathan Liu
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            Dates

              Created:
              Updated:
              Resolved:

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