func isHostIP(ipAddress string) bool {
	host, _, err := net.SplitHostPort(ipAddress)
	if err != nil {
		host = ipAddress
	}
	// Strip off IPv6 zone information.
	if i := strings.Index(host, "%"); i > -1 {
		host = host[:i]
	}
	return net.ParseIP(host) != nil
}

// extractHostPort - extracts host/port from many address formats

            writer.write("1.2.3.4 HOST1\n");
            writer.write("192.168.1.100 HOST2\n");
            writer.write("255.255.255.255 HOST3\n");
            writer.write("10.0.0.1 HOST4\n");
        }

        when(mockConfig.getLmHostsFileName()).thenReturn(lmhostsFile.getAbsolutePath());

        // Use getByName to trigger populate
        assertNotNull(lmhosts.getByName("HOST1", mockContext));

     * @throws UnknownHostException if the host cannot be resolved
     */
    NetbiosAddress[] getNbtAllByName(String host, int type, String scope, InetAddress svr) throws UnknownHostException;

    /**
     * Determines the address of a host given it's host name. NetBIOS
     * names also have a <code>type</code>. Types(aka Hex Codes)
     * are used to distinguish the various services on a host. <a

    assertThat(parse("http:\\\\host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:///host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:\\//host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http:/\\/host/path"))
      .isEqualTo(parse("http://host/path"))
    assertThat(parse("http://\\host/path"))

    /**
     * Displays the initial duplicate host management page.
     *
     * @param form the search form
     * @return HTML response for the duplicate host list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays the duplicate host list with pagination.
     *

		{":0", "", "0"},
		{"server:https", "server", "443"},
		{"server:http", "server", "80"},
	}

	for _, testCase := range testCases {
		host, port := mustSplitHostPort(testCase.hostPort)
		if testCase.expectedHost != host {
			t.Fatalf("host: expected = %v, got = %v", testCase.expectedHost, host)
		}

		if testCase.expectedPort != port {
			t.Fatalf("port: expected = %v, got = %v", testCase.expectedPort, port)
		}
	}
}

    assertThat("http://host/a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%00b"))
    assertThat("http://host/a\u0080b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%80b"))
    assertThat("http://host/a\u009fb".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/a%C2%9Fb"))
    // Percent-encoded in the query.
    assertThat("http://host/?a\u0000b".toHttpUrl().toUri())
      .isEqualTo(URI("http://host/?a%00b"))

     *             if the host cannot be resolved to find out.
     */
    boolean isActive(CIFSContext tc) throws UnknownHostException;

    /**
     * Determines if this address is set to be permanent.
     *
     * @param tc
     *            context to use
     * @return whether this address is permanent
     *
     * @throws UnknownHostException
     *             if the host cannot be resolved to find out.
     */

    public static NbtAddress getByName(final String host, final int type, final String scope) throws UnknownHostException {

        return getByName(host, type, scope, null);
    }

    /**
     * Determines the address of a host given its host name with a specific server.
     * The additional <code>svr</code> parameter specifies the address to
     * query. This might be the address of a specific host, a name server,
     * or a broadcast address.

        // Arrange
        String host = "testHost";
        when(nameServiceClient.getNbtAllByAddress(host)).thenThrow(new UnknownHostException("Host not found"));

        // Act & Assert
        assertThrows(UnknownHostException.class, () -> nameServiceClient.getNbtAllByAddress(host));
        verify(nameServiceClient, times(1)).getNbtAllByAddress(host);
    }

    @Test