Example usage for java.net InetAddress getByAddress

Introduction

In this page you can find the example usage for java.net InetAddress getByAddress.

Prototype

public static InetAddress getByAddress(byte[] addr) throws UnknownHostException

Source Link

Document

Returns an InetAddress object given the raw IP address .

Usage

From source file:Main.java

public static InetAddress getBroadcastAddress(Context context) throws UnknownHostException {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo dhcp = wifi.getDhcpInfo();/*from  w  w  w.ja  va  2 s .  c  o m*/
    if (dhcp == null) {
        return InetAddress.getByName("255.255.255.255");
    }
    int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
    byte[] quads = new byte[4];
    for (int k = 0; k < 4; k++)
        quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
    return InetAddress.getByAddress(quads);
}

From source file:Main.java

/**
 * Returns the wi-fi broadcast address/*w w w. j  a va  2s . co  m*/
 *
 * @param context the app context
 * @return returns an the broadcast address
 * @throws IOException
 */
public static InetAddress getBroadcastAddress(Context context) throws IOException {
    WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    DhcpInfo dhcp = wifi.getDhcpInfo();
    // handle null somehow

    int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
    byte[] quads = new byte[4];
    for (int k = 0; k < 4; k++)
        quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
    return InetAddress.getByAddress(quads);
}

From source file:org.yestech.lib.net.InternetAddress.java

public static InetAddress createIp4Address(String address) {
    String[] tempOctects = StringUtils.split(address, ".");
    if (tempOctects.length == 4) {
        byte[] octets = new byte[4];
        for (int i = 0; i < tempOctects.length; i++) {
            String tempOctect = tempOctects[i];
            octets[i] = Byte.valueOf(tempOctect);
        }//w ww  .  j  a va  2 s .  c om
        try {
            return InetAddress.getByAddress(octets);
        } catch (UnknownHostException e) {
            throw new RuntimeException(e);
        }
    } else {
        throw new IllegalArgumentException("not a valid ip4 address");
    }
}

From source file:Main.java

public static InetAddress intToInet(int value) {
    byte[] bytes = new byte[4];
    for (int i = 0; i < 4; i++) {
        bytes[i] = byteOfInt(value, i);//from   w w  w .  j av  a2  s  . c o  m
    }
    try {
        return InetAddress.getByAddress(bytes);
    } catch (UnknownHostException e) {
        // This only happens if the byte array has a bad length
        return null;
    }
}

From source file:Main.java

/**
 * Calculates the network mask address from the value
 * //from  w  w  w.ja v  a 2s.c o m
 * @param numericMask
 *            the network mask
 * @return
 */
public static String networkMaskFromInt(int numericMask) {
    //        StringBuffer sb = new StringBuffer(15);
    //        for (int shift = 24; shift > 0; shift -= 8) {
    //            // process 3 bytes, from high order byte down.
    //            sb.append(Integer.toString((numericMask >>> shift) & 0xff));
    //            sb.append('.');
    //        }
    //        sb.append(Integer.toString(numericMask & 0xff));
    //        return sb.toString();
    //    }
    //    
    //    public String getMaskAsString() {
    int value = 0xffffffff << (32 - numericMask);
    byte[] bytes = new byte[] { (byte) (value >>> 24), (byte) (value >> 16 & 0xff), (byte) (value >> 8 & 0xff),
            (byte) (value & 0xff) };

    InetAddress netAddr = null;
    try {
        netAddr = InetAddress.getByAddress(bytes);
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return netAddr.getHostAddress();
}

From source file:Main.java

public static InetAddress getIpAddress(Context context) throws UnknownHostException {
    WifiManager wifiMgr = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
    int ip = wifiInfo.getIpAddress();

    if (ip == 0) {
        return null;
    } else {//ww w  . j a v  a 2s.  co m
        byte[] ipAddress = convertIpAddress(ip);
        return InetAddress.getByAddress(ipAddress);
    }
}

From source file:Main.java

protected static InetSocketAddress deserialiseAddress(DataInputStream is)

        throws IOException {
    byte[] bytes = deserialiseByteArray(is, 16);

    int port = is.readShort() & 0xffff;

    return (new InetSocketAddress(InetAddress.getByAddress(bytes), port));
}

From source file:Main.java

static InetAddress parseLinuxSubnetMask(String line) throws UnknownHostException {
    int e = line.indexOf("broadcast");
    if (e == -1)/* w  ww.jav  a2s  . co  m*/
        return null;
    e--;
    String v = line.substring(line.indexOf("netmask") + 8, e);
    if (v.startsWith("0x")) {
        try {
            long address = Long.parseLong(v.substring(2), 16);
            return InetAddress.getByAddress(new byte[] { (byte) (address >> 24),
                    (byte) ((address >> 16) & 0xff), (byte) ((address >> 8) & 0xff), (byte) (address & 0xff) });
        } catch (NumberFormatException e2) {
        }
    } else {
        return InetAddress.getByName(v);
    }
    return null;
}

From source file:NetUtil.java

/**
 * Resolves ip address and returns host name as a string.
 *///from w w  w .  ja  v a2 s .c  om
public static String resolveIp(byte[] ip) {
    try {
        InetAddress addr = InetAddress.getByAddress(ip);
        return addr.getHostName();
    } catch (UnknownHostException uhex) {
        return null;
    }
}

From source file:org.apache.axis2.transport.testkit.util.ServerUtil.java

/**
 * Wait until the server listening on a given TCP port is ready to accept
 * connections./*from  ww  w .  j  a va  2 s. c o  m*/
 * 
 * @param port The TCP port the server listens on.
 * @throws Exception
 */
public static void waitForServer(int port) throws Exception {
    InetAddress localhost = InetAddress.getByAddress(new byte[] { 127, 0, 0, 1 });
    int attempts = 0;
    Socket socket = null;
    while (socket == null) {
        attempts++;
        try {
            socket = new Socket(localhost, port);
        } catch (ConnectException ex) {
            if (attempts < 10) {
                Thread.sleep(50);
            } else {
                throw ex;
            }
        }
    }
    log.debug("Server on port " + port + " ready after " + attempts + " connection attempts");
    socket.close();
}