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telnet interface can cause vlc to take 100% cpu

    • Closed Issue created by beurre @beurre

    When a client connects to vlc telnet interface and the socket closes unexpectedly, vlc will go 100% cpu ... to reproduce ...

    1. launch a vlc instance with : vlc --intf telnet --telnet-port 2000 --telnet-password apasswd --telnet-host 127.0.0.1

    2. use a telnet client to connect to 127.0.0.1:2000

    3a) hardkill the telnet client (kill -9 or windows task manager->End process tree)

    3b) fill in passwd and hardkill the telnet client

    1. cpu will be used up

    this simple test has been tested on windows xp, seen on linux gentoo 2006.1 but currently does not a linuxbox handy to confirm again with this simplest test

    vlc version : 0.8.6 and has noticed this behavior on 0.8.5

    test2 :

    using TClientSocket of VCL C++Builder 6.0 update 4 (pseudocode)

    1. ClientSocket configured properly (addr = 127.0.0.1, port = 2000)

    2. ClientSocket->Open();

    3. ClientSocket->OnRead : Socket->SendText("anything");ClientSocket->Close()

    4. vlc will take 100%cpu if ">" string returned by vlc is not read by the client ..., OK if client wait until received the ">" before closing

    ps: this can lead to DoS ...

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