tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/client/DeployMojo.java [262:282]:
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    private ClientSession connect(SshClient client) throws IOException, InterruptedException {
        int retries = 0;
        ClientSession session = null;
        do {
            final ConnectFuture future = client.connect(user, host, port);
            future.await();
            try {
                session = future.getSession();
            }
            catch (RuntimeSshException ex) {
                if (retries++ < attempts) {
                    Thread.sleep(TimeUnit.SECONDS.toMillis(delay));
                    getLog().info("retrying (attempt " + retries + ") ...");
                }
                else {
                    throw ex;
                }
            }
        } while (session == null);
        return session;
    }
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tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/client/ClientMojo.java [265:285]:
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    private ClientSession connect(SshClient client) throws IOException, InterruptedException {
        int retries = 0;
        ClientSession session = null;
        do {
            final ConnectFuture future = client.connect(user, host, port);
            future.await();
            try {
                session = future.getSession();
            }
            catch (RuntimeSshException ex) {
                if (retries++ < attempts) {
                    Thread.sleep(TimeUnit.SECONDS.toMillis(delay));
                    getLog().info("retrying (attempt " + retries + ") ...");
                }
                else {
                    throw ex;
                }
            }
        } while (session == null);
        return session;
    }
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