Terminate Command

Hi, how can i terminate infinite loop command that run with “execCreateCmd” like ping or any others ? here is my code

ExecCreateCmdResponse execCreateCmdResponse = dockerClient.execCreateCmd(ubuntu_container.getId())
                .withAttachStdout(true)
                .withCmd("ping", "google.com")
                .withUser("root")
                .exec();

        dockerClient.execStartCmd(execCreateCmdResponse.getId())
                .exec(new ExecStartResultCallback(System.out, System.err));

it ping google.com infinitely, how can i terminate it(something like ctrl-c) .

[xbj110825]

I found a way to terminate specific process by sending 0x03(control character: end-of-text ^C) to it’s stdin.

DockerClient dockerClient = dockerClient();
String exeId = dockerClient.execCreateCmd("1d87fe71c8bb")
        .withCmd("ping", "127.0.0.1")
        .withAttachStdin(true)
        .withAttachStdout(true)
        .withAttachStderr(true)
        .withTty(true)
        .exec().getId();

PipedInputStream pipedInputStream = new PipedInputStream();
PipedOutputStream pipedOutputStream = new PipedOutputStream();
pipedInputStream.connect(pipedOutputStream);

ResultCallback.Adapter<Frame> execCallback = dockerClient.execStartCmd(exeId).withStdIn(pipedInputStream)
        .exec(new ResultCallback.Adapter<Frame>() {
            @Override
            public void onNext(Frame object) {
                try {
                    System.out.write(object.getPayload());
                } catch (IOException e) {
                    throw new UncheckedIOException(e);
                }
            }
        });
Thread.sleep(3000);
pipedOutputStream.write(3);
execCallback.awaitCompletion();

Ping process exits in three second.

PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.045 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.054 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.045 ms
^C
--- 127.0.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2010ms

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