Java Utililty Methods InetAddress

List of utility methods to do InetAddress

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Description

The list of methods to do InetAddress are organized into topic(s).

Method

URLcreateAbsoluteURL(InetAddress address, int localStreamPort, URI relativeOrNot)
create Absolute URL 
try {
    if (address instanceof Inet6Address) {
        return createAbsoluteURL(new URL("http://[" + address.getHostAddress() + "]:" + localStreamPort),
                relativeOrNot);
    } else if (address instanceof Inet4Address) {
        return createAbsoluteURL(new URL("http://" + address.getHostAddress() + ":" + localStreamPort),
                relativeOrNot);
    } else {
...
DatagramSocketcreateDatagramSocket(InetAddress addr, int port)
Creates a DatagramSocket bound to addr. 
DatagramSocket sock = null;
if (addr == null) {
    if (port == 0) {
        return new DatagramSocket();
    } else {
        while (port < MAX_PORT) {
            try {
                return new DatagramSocket(port);
...
InetSocketAddresscreateInetSocketAddress(final InetAddress address)
create Inet Socket Address 
if (address.isLoopbackAddress()) {
    return new InetSocketAddress(address, LOCAL_CLIENT_PORT);
return new InetSocketAddress(address, CLIENT_PORT);
InetSocketAddresscreateResolved(InetAddress address, int port)
Creates and returns a resolved InetSocketAddress . 
return new InetSocketAddress(address, port);
DatagramSocketcreateSocket(InetAddress address, int port, boolean fixedPort)
Opens a socket on a specific network interface, either on a fixed or a random port. 
DatagramSocket result = null;
if (fixedPort) {
    try {
        result = new DatagramSocket(new InetSocketAddress(address, port));
        result.setSoTimeout(50);
    } catch (Exception e) {
        return null;
} else {
    Random rdm = new Random();
    port = port + rdm.nextInt(1024);
    while (result == null && port < 65530) {
        try {
            result = new DatagramSocket(new InetSocketAddress(address, port));
            result.setSoTimeout(50);
        } catch (Exception e) {
            result = null;
            port++;
return result;
booleandoMatch(InetAddress inetAddress, String toMatchParam)
Checks a string macthes with a IP address. 
String hostAddres = inetAddress.getHostAddress();
if (toMatchParam.contains("-")) {
    if (hostAddres.contains(":")) {
        return false;
    String[] octects = toMatchParam.split("\\.");
    String[] octectsIA = hostAddres.split("\\.");
    String first3 = octects[0] + "." + octects[1] + "." + octects[2];
...
intfindFreePort(InetAddress address, int start, int end)
Find free port in range for the specified IP address 
ServerSocket socket = null;
try {
    for (int port = start; port <= end; ++port) {
        try {
            socket = new ServerSocket(port, 0, address);
            socket.setReuseAddress(true);
            return socket.getLocalPort();
        } catch (IOException ignore) {
...
intfindUnusedPort(InetAddress address, int from, int to)
find Unused Port 
for (int i = 0; i < 12; i++) {
    ServerSocket ss = null;
    int port = getRandomPort(from, to);
    try {
        ss = new ServerSocket();
        SocketAddress sa = new InetSocketAddress(address, port);
        ss.bind(sa);
        return ss.getLocalPort();
...
intfindUnusedPort(InetAddress address, int low, int high)
Finds an unused local port between the given from and to values. 
if (high < low)
    return -1;
for (int i = 0; i < 10; i++) {
    int port = getRandomPort(low, high);
    if (!isPortInUse(address, port))
        return port;
return -1;
...
ScriptableformatAddress(InetAddress address, int port, Context cx, Scriptable scope)
format Address 
Scriptable addr = cx.newObject(scope);
addr.put("port", addr, port);
addr.put("address", addr, address.getHostAddress());
if (address instanceof Inet6Address) {
    addr.put("family", addr, "IPv6");
} else {
    addr.put("family", addr, "IPv4");
return addr;