logger.FatalIf(err, "Unable to get IP addresses of this host")

	for _, interf := range ifs {
		addrs, err := interf.Addrs()
		if err != nil {
			continue
		}
		if runtime.GOOS == "windows" && interf.Flags&net.FlagUp == 0 {
			continue
		}

		for _, addr := range addrs {
			var ip net.IP
			switch v := addr.(type) {
			case *net.IPNet:
				ip = v.IP
			case *net.IPAddr:
				ip = v.IP
			}

			}
		}
	}
}

func TestSameLocalAddrs(t *testing.T) {
	testCases := []struct {
		addr1       string
		addr2       string
		sameAddr    bool
		expectedErr error
	}{
		{"", "", false, errors.New("unable to process empty address")},
		{":9000", ":9000", true, nil},
		{"localhost:9000", ":9000", true, nil},

		}
	}
	panic("unknown address type on listener")
}

// Addrs - returns all address information of TCP listeners.
func (listener *httpListener) Addrs() (addrs []net.Addr) {
	addrs = make([]net.Addr, 0, len(listener.listeners))
	for i := range listener.listeners {
		addrs = append(addrs, listener.listeners[i].Addr())
	}

	return addrs
}

// TCPOptions specify customizable TCP optimizations on raw socket

        WitnessNotification.WitnessIPAddress addr4 = new WitnessNotification.WitnessIPAddress(ipv4);
        WitnessNotification.WitnessIPAddress addr6 = new WitnessNotification.WitnessIPAddress(ipv6);

        // IPv4 tests
        assertTrue(addr4.isIPv4());
        assertFalse(addr4.isIPv6());
        assertEquals(WitnessNotification.WitnessIPAddress.IPV4, addr4.getFlags());

        // IPv6 tests

        InetAddress addr1 = InetAddress.getByName("192.168.1.100");
        InetAddress addr2 = InetAddress.getByName("192.168.1.101");
        NetworkInterfaceInfo local = new NetworkInterfaceInfo(addr1, 1000);
        NetworkInterfaceInfo remote1 = new NetworkInterfaceInfo(addr1, 1000);
        NetworkInterfaceInfo remote2 = new NetworkInterfaceInfo(addr2, 10000); // Faster interface

		}).DialContext
	}

	return func(ctx context.Context, network, addr string) (conn net.Conn, err error) {
		host, port, err := net.SplitHostPort(addr)
		if err != nil {
			return nil, err
		}

		if net.ParseIP(host) != nil {
			// For IP only setups there is no need for DNS lookups.
			return baseDialCtx(ctx, "tcp", addr)
		}

		ips, err := lookupHost(ctx, host)
		if err != nil {
			return nil, err

	if _, ok := value.(driver.Valuer); ok {
		builder.AddVar(builder, value)
		return
	}

	switch rv := reflect.ValueOf(value); rv.Kind() {
	case reflect.Slice, reflect.Array:
		if rv.Len() == 0 {
			builder.AddVar(builder, nil)
		} else {
			for i := 0; i < rv.Len(); i++ {
				if i > 0 {
					builder.WriteByte(',')
				}
				builder.AddVar(builder, rv.Index(i).Interface())
			}
		}
	default:

		server := NewServer(testCase.addrs).
			UseHandler(testCase.handler)
		if testCase.certFn != nil {
			server = server.UseTLSConfig(&tls.Config{
				PreferServerCipherSuites: true,
				GetCertificate:           testCase.certFn,
			})
		}
		if server == nil {
			t.Fatalf("Case %v: server: expected: <non-nil>, got: <nil>", (i + 1))
		} else if !reflect.DeepEqual(server.Addrs, testCase.addrs) {

func (limit Limit) Build(builder Builder) {
	if limit.Limit != nil && *limit.Limit >= 0 {
		builder.WriteString("LIMIT ")
		builder.AddVar(builder, *limit.Limit)
	}
	if limit.Offset > 0 {
		if limit.Limit != nil && *limit.Limit >= 0 {
			builder.WriteByte(' ')
		}
		builder.WriteString("OFFSET ")
		builder.AddVar(builder, limit.Offset)
	}
}

// MergeClause merge order by clauses
func (limit Limit) MergeClause(clause *Clause) {

            file.delete();
            file.mkdirs();
            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());
            crawler.addUrl(url);
            crawler.getCrawlerContext().setMaxAccessCount(maxCount);
            crawler.getCrawlerContext().setNumOfThread(numOfThread);
            crawler.urlFilter.addInclude(url + ".*");