Question

我不知道为什么会这样？当我扫描少于300个TCP端口时，我没有发生？当我需要扫描多个端口时它会崩溃应用程序？任何人都有任何想法来解决这个错误？我花了几天时间：）

    public void start(int threadCounter)
    {
        for (int i = 0; i < threadCounter; i++)
        {
            Thread thread1 = new Thread(new ThreadStart(RunScanTcp));
            thread1.Name = "Thread : " + i.ToString();
            thread1.IsBackground = true;
            thread1.Start();
        }
    }
    public void RunScanTcp()
    {
        int port;
        var reset3 = new TaskCompletionSource<bool>();
        //while there are more ports to scan 
        while ((port = portList.NextPort()) != -1)
        {
            var reset2 = new TaskCompletionSource<bool>();

            Activity.RunOnUiThread(() =>
            {
                tcp_count = tcp_count + 1;
            });

            Thread.Sleep(100);
            count = port;


            Console.WriteLine("Current Port Count : " + count.ToString());

            try
            {

                Connect(host, port, tcpTimeout);

            }
            catch
            {
                continue;
            }

            Activity.RunOnUiThread(() =>
            {
                received_tcp = received_tcp + 1;
                mdata.Add(new data() { titulli = "Port : " + port, sekuenca = "Sequence : ", ttl = "Connection Sucessfull !", madhesia = "", koha = "Time : " });
                mAdapter.NotifyItemInserted(mdata.Count() - 1);
                if (ndaluar == false)
                {
                    mRecyclerView.ScrollToPosition(mdata.Count() - 1);
                }

                reset2.TrySetResult(true);
            });

            reset2.Task.Wait();
            Console.WriteLine("TCP Port {0} is open ", port);

        }


        if (turnOff == true)
        {
            turnOff = false;
            Activity.RunOnUiThread(() =>
            {
                mdata.Add(new data() { titulli = "General Information", sekuenca = "Transmited : " + tcp_count + ",", ttl = "Open Ports : " + received_tcp + ",", madhesia = "Closed Ports : " + (tcp_count - received_tcp), koha = "" });
                mAdapter.NotifyItemInserted(mdata.Count());
                if (ndaluar == false)
                {
                    mRecyclerView.ScrollToPosition(mdata.Count() - 1);
                }

                ping_progress.Visibility = ViewStates.Invisible;
                dergo_ping.Text = "Scan";
                reset3.TrySetResult(true);
            });
            reset3.Task.Wait();
            Console.WriteLine("Scan Complete !!!");
        }
    }
    public TcpClient Connect(string hostName, int port, int timeout)
    {
        var newClient = new TcpClient();

        var state = new isTcpPortOpen
        {
            MainClient = newClient,
            tcpOpen = true
        };

        IAsyncResult ar = newClient.BeginConnect(hostName, port, AsyncCallback, state);
        state.tcpOpen = ar.AsyncWaitHandle.WaitOne(timeout, false);

        if (state.tcpOpen == false || newClient.Connected == false)
        {
            throw new Exception();

        }
        return newClient;
    }
    public void AsyncCallback(IAsyncResult asyncResult)
    {
        var state = (isTcpPortOpen)asyncResult.AsyncState;
        TcpClient client = state.MainClient;

        try
        {
            client.EndConnect(asyncResult);
        }
        catch
        {
            return;
        }

        if (client.Connected && state.tcpOpen)
        {
            return;
        }

        client.Close();
    }

这是调试输出

rt Count : 961 05-17 23:08:29.430 I/mono-stdout(13704): Current Port Count : 961 Current Port Count : 962 05-17 23:08:29.449 I/mono-stdout(13704): Current Port Count : 962 Current Port Count : 963 05-17 23:08:29.451 I/mono-stdout(13704): Current Port Count : 963 Current Port Count : 964 05-17 23:08:29.462 I/mono-stdout(13704): Current Port Count : 964 05-17 23:08:29.464 E/Parcel (13704): dup() failed in Parcel::read, i is 0, fds[i] is -1, fd_count is 1, error: Too many open files Current Port Count : 965 05-17 23:08:29.481 I/mono-stdout(13704): Current Port Count : 965 05-17 23:08:29.483 E/Parcel (13704): dup() failed in Parcel::read, i is 0, fds[i] is -1, fd_count is 1, error: Too many open files 05-17 23:08:29.488 E/Parcel (13704): writeDupFileDescriptor: error 24 dup fd 1017 05-17 23:08:29.489 E/Surface (13704): queueBuffer: error queuing buffer to SurfaceTexture, -22 05-17 23:08:29.489 E/EGL-ERROR: void __egl_platform_queue_buffer_android(mali_base_ctx_handle, egl_buffer*):1374: unable to queue buffer (0x0xb8ed1380) 05-17 23:08:29.500 E/Parcel (13704): dup() failed in Parcel::read, i is 0, fds[i] is -1, fd_count is 1, error: Too many open files Current Port Count : 966 05-17 23:08:29.500 I/mono-stdout(13704): Current Port Count : 966 Current Port Count : 967 Current Port Count : 968 05-17 23:08:29.515 I/mono-stdout(13704): Current Port Count : 967 05-17 23:08:29.516 I/mono-stdout(13704): Current Port Count : 968 05-17 23:08:29.519 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -2147483646, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.520 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -2147483646, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.520 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 969 05-17 23:08:29.524 I/mono-stdout(13704): Current Port Count : 969 Current Port Count : 969 05-17 23:08:29.524 I/mono-stdout(13704): Current Port Count : 969 Current Port Count : 970 05-17 23:08:29.534 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.535 I/mono-stdout(13704): Current Port Count : 970 05-17 23:08:29.535 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.536 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:29.552 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.553 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.553 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 972 05-17 23:08:29.556 I/mono-stdout(13704): Current Port Count : 972 Current Port Count : 971 05-17 23:08:29.556 I/mono-stdout(13704): Current Port Count : 971 Current Port Count : 973 05-17 23:08:29.568 I/mono-stdout(13704): Current Port Count : 973 05-17 23:08:29.571 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.571 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.572 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 974 05-17 23:08:29.586 I/mono-stdout(13704): Current Port Count : 974 Current Port Count : 975 Current Port Count : 976 Current Port Count : 977 Current Port Count : 979 Current Port Count : 978 Current Port Count : 980 05-17 23:08:29.589 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.589 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.590 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:29.605 I/mono-stdout(13704): Current Port Count : 975 05-17 23:08:29.605 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.606 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.607 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:29.622 I/mono-stdout(13704): Current Port Count : 976 05-17 23:08:29.622 I/mono-stdout(13704): Current Port Count : 977 05-17 23:08:29.624 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.625 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.625 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:29.626 I/mono-stdout(13704): Current Port Count : 979 05-17 23:08:29.626 I/mono-stdout(13704): Current Port Count : 978 05-17 23:08:29.637 I/mono-stdout(13704): Current Port Count : 980 05-17 23:08:29.642 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.643 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.643 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 981 05-17 23:08:29.658 I/mono-stdout(13704): Current Port Count : 981 05-17 23:08:29.659 I/mono-stdout(13704): Current Port Count : 982 05-17 23:08:29.661 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.662 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.662 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 982 Current Port Count : 983 05-17 23:08:29.670 I/mono-stdout(13704): Current Port Count : 983 05-17 23:08:29.677 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.678 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.679 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 984 05-17 23:08:29.688 I/mono-stdout(13704): Current Port Count : 984 05-17 23:08:29.696 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.696 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.697 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 985 05-17 23:08:29.707 I/mono-stdout(13704): Current Port Count : 985 05-17 23:08:29.714 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.715 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.715 I/System (13704): FinalizerDaemon: finalize objects = 615 05-17 23:08:29.715 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 986 Current Port Count : 987 05-17 23:08:29.723 I/mono-stdout(13704): Current Port Count : 986 05-17 23:08:29.724 I/mono-stdout(13704): Current Port Count : 987 Current Port Count : 988 Current Port Count : 989 05-17 23:08:29.728 I/mono-stdout(13704): Current Port Count : 988 05-17 23:08:29.728 I/mono-stdout(13704): Current Port Count : 989 05-17 23:08:29.731 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.732 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.732 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE Current Port Count : 990 05-17 23:08:29.739 I/mono-stdout(13704): Current Port Count : 990 Thread finished: Thread : 4 #11 Current Port Count : 991 Current Port Count : 992 05-17 23:08:29.747 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.748 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:29.748 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:29.760 I/mono-stdout(13704): Current Port Count : 991 05-17 23:08:29.764 I/mono-stdout(13704): Current Port Count : 992 Current Port Count : 1000 Current Port Count : 1000 05-17 23:08:29.970 I/mono-stdout(13704): Current Port Count : 1000 05-17 23:08:29.970 I/mono-stdout(13704): Current Port Count : 1000 05-17 23:08:29.971 I/mono-stdout(13704): Current Port Count : 1000 Thread finished: Thread : 5 #12 Current Port Count : 1000 Current Port Count : 1000 05-17 23:08:29.985 I/mono-stdout(13704): Current Port Count : 1000 05-17 23:08:29.985 I/mono-stdout(13704): Current Port Count : 1000 Thread finished: Thread : 8 #15 Thread finished: Thread : 1 #8 Current Port Count : 1000 05-17 23:08:30.015 I/mono-stdout(13704): Current Port Count : 1000 Thread finished: Thread : 3 #10 Current Port Count : 1000 Thread finished: Thread : 2 #9 Current Port Count : 1000 05-17 23:08:30.041 I/mono-stdout(13704): Current Port Count : 1000 Thread finished: Thread : 0 #7 Current Port Count : 1000 05-17 23:08:30.073 I/mono-stdout(13704): Current Port Count : 1000 Thread finished: Thread : 7 #14 Thread finished: Thread : 6 #13 Scan Complete !!! 05-17 23:08:30.099 I/mono-stdout(13704): Scan Complete !!! Thread finished: Thread : 9 #16 The thread 'Unknown' (0xb) has exited with code 0 (0x0). The thread 'Unknown' (0xc) has exited with code 0 (0x0). The thread 'Thread : 8' (0xf) has exited with code 0 (0x0). The thread 'Thread : 1' (0x8) has exited with code 0 (0x0). The thread 'Thread : 3' (0xa) has exited with code 0 (0x0). The thread 'Unknown' (0x9) has exited with code 0 (0x0). The thread 'Unknown' (0x7) has exited with code 0 (0x0). The thread 'Unknown' (0xe) has exited with code 0 (0x0). The thread 'Unknown' (0xd) has exited with code 0 (0x0). The thread 'Unknown' (0x10) has exited with code 0 (0x0). 05-17 23:08:30.159 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.160 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.161 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.166 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.167 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.167 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.176 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.176 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.177 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.193 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.194 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.194 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.211 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.211 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.212 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.228 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.229 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.230 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.246 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.247 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.247 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.264 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.264 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3 05-17 23:08:30.265 E/OpenGLRenderer(13704): GL error: GL_INVALID_VALUE 05-17 23:08:30.282 E/EGL-ERROR: void __egl_platform_dequeue_buffer(egl_surface*):1737: failed to dequeue buffer from native window 0xb8f95410; err = -38, buf = 0x0,max_allowed_dequeued_buffers 3

Answer 1

使用后需要Dispose TcpClient。

Android.Xamarin中打开的文件过多

1 个答案: