[FFmpeg-trac] #1706(avformat:new): (win64) avformat/FFMPEG crashed after connection loss to stream server

[FFmpeg]

#1706: (win64) avformat/FFMPEG crashed after connection loss to stream server
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             Reporter:  fekete    |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 '''Summary of the bug:''' When I stream using ffmpeg libraries or
 ffmpeg.exe itself and my connection is lost I get crash.

 I tried it in Linux as well and it "crashed" with unhandled SIGPIPE.

 '''How to reproduce:'''
 - everything running on windows 7 Professional 64 bit with SP1
 - for the test I used Adobe flash server, dacast, wowza, ustream,
 livestream, showcaster
 - start streaming with ffmpeg (or use software which utilize the ffmpeg's
 set of libraries).
 - unplugg the ethernet cable (e.g. simulate connection drop).
 - in few moments I have crash (no special info is given except : unhandled
 exception at <address> (avformat-54.dll) : Access violation writting
 location ...)

 '''callstack has only 1 entry (rest is just some addresses) :
 avformat-54.dll!avformat_get_riff_audio_tags()'''

 ''what I think it's going on is, that part of the ffmpeg is trying to send
 data (RTMP Send) but it does not handled WSAECONNABORTED WinSock Error
 properly (10053), so it keeps writing to something that is not a valid
 socket anymore.''

 '''Versions:'''
 ''windows 7 : ''

 Windows Nightly Builds/64 bit windows build taken from
 [http://libav.org/download.html]

 build flags :

 --enable-runtime-cpudetect --enable-cross-compile --enable-w32threads
 --prefix=/usr --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
 --target-os=mingw32 --sysroot=/usr/x86_64-w64-mingw32 --enable-gpl
 --enable-librtmp --enable-libx264 --enable-libmp3lame --enable-libvorbis
 --enable-memalign-hack --enable-shared --enable-libvpx --enable-libvo-
 aacenc
 --enable-version3

 ''Linux Debian testing 64bit :''

 ffmpeg version 0.11.1
 built on Jul 31 2012 16:16:27 with gcc 4.7.1
 configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector
 --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' --extra-
 ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-
 libmp3lame --enable-gpl --enable-nonfree --disable-decoder=libdirac
 --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid
 --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264
 --enable-libspeex --enable-nonfree --disable-stripping --enable-
 libschroedinger --disable-encoder=libschroedinger --enable-version3
 --enable-libopenjpeg --enable-libvpx --enable-librtmp --enable-avfilter
 --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb
 --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64
 -linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-
 gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libdc1394
 --disable-altivec --disable-armv5te --disable-armv6 --disable-vis
 --shlibdir=/usr/lib/x86_64-linux-gnu
 libavutil      51. 54.100 / 51. 54.100
 libavcodec     54. 23.100 / 54. 23.100
 libavformat    54.  6.100 / 54.  6.100
 libavdevice    54.  0.100 / 54.  0.100
 libavfilter     2. 77.100 /  2. 77.100
 libswscale      2.  1.100 /  2.  1.100
 libswresample   0. 15.100 /  0. 15.100
 libpostproc    52.  0.100 / 52.  0.100

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1706>
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