java.lang.Object
- google.registry.util.CidrAddressBlock

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<java.net.InetAddress>
```
public class CidrAddressBlock
extends java.lang.Object
implements java.lang.Iterable<java.net.InetAddress>, java.io.Serializable
```
Class representing an RFC 1519 CIDR IP address block.
When creating a CidrAddressBlock from an IP string literal without a specified CIDR netmask (i.e. no trailing "/16" or "/64") or an InetAddress with an accompanying integer netmask, then the maximum length netmask for the address famiy of the specified address is used (i.e. 32 for IPv4, 128 for IPv6). I.e. "1.2.3.4" is automatically treated as "1.2.3.4/32" and, similarly, "2001:db8::1" is automatically treated as "2001:db8::1/128".

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`CidrAddressBlock(java.lang.String s)`	Attempts to parse the given String into a CIDR block.
`CidrAddressBlock(java.lang.String ip, int netmask)`	Attempts to parse the given String and int into a CIDR block.
`CidrAddressBlock(java.net.InetAddress ip)`
`CidrAddressBlock(java.net.InetAddress ip, int netmask)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`contains(CidrAddressBlock cidr)`	Returns `true` if the supplied `CidrAddressBlock` is within this `CidrAddressBlock`, `false` otherwise.
`boolean`	`contains(java.lang.String s)`	Returns `true` if the supplied `String` is within this `CidrAddressBlock`, `false` otherwise.
`boolean`	`contains(java.net.InetAddress ipAddr)`	Returns `true` if the supplied `InetAddress` is within this `CidrAddressBlock`, `false` otherwise.
`static CidrAddressBlock`	`create(java.lang.String s)`	Attempts to construct a CIDR block from the IP address and netmask expressed as a String, truncating the IP address as required.
`static CidrAddressBlock`	`create(java.net.InetAddress ip, int netmask)`	Attempts to construct a CIDR block from the IP address and netmask, truncating the IP address as required.
`boolean`	`equals(java.lang.Object o)`
`java.net.InetAddress`	`getAllOnesAddress()`	Returns the address that is contained in this `CidrAddressBlock` with the most bits set.
`java.net.InetAddress`	`getInetAddress()`
`java.lang.String`	`getIp()`
`int`	`getNetmask()`	Returns the number of leading bits (prefix size) of the routing prefix.
`int`	`hashCode()`
`java.util.Iterator<java.net.InetAddress>`	`iterator()`
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Constructor Detail
  - CidrAddressBlock
```
public CidrAddressBlock(java.lang.String s)
```
    Attempts to parse the given String into a CIDR block.
    If the string is an IP string literal without a specified CIDR netmask (i.e. no trailing "/16" or "/64") then the maximum length netmask for the address famiy of the specified address is used (i.e. 32 for IPv4, 128 for IPv6).
    The specified IP address portion must be properly truncated (i.e. all the host bits must be zero) or the input is considered malformed. For example, "1.2.3.0/24" is accepted but "1.2.3.4/24" is not. Similarly, for IPv6, "2001:db8::/32" is accepted whereas "2001:db8::1/32" is not.
    If inputs might not be properly truncated but would be acceptable to the application consider constructing a CidrAddressBlock via create().
    
    Parameters:
    
    s - a String of the form "217.68.0.0/16" or "2001:db8::/32".
    
    Throws:
    
    java.lang.IllegalArgumentException - if s is malformed or does not represent a valid CIDR block.
  - CidrAddressBlock
```
public CidrAddressBlock(java.lang.String ip,
                        int netmask)
```
    Attempts to parse the given String and int into a CIDR block.
    The specified IP address portion must be properly truncated (i.e. all the host bits must be zero) or the input is considered malformed. For example, "1.2.3.0/24" is accepted but "1.2.3.4/24" is not. Similarly, for IPv6, "2001:db8::/32" is accepted whereas "2001:db8::1/32" is not.
    An IP address without a netmask will automatically have the maximum applicable netmask for its address family. I.e. "1.2.3.4" is automatically treated as "1.2.3.4/32", and "2001:db8::1" is automatically treated as "2001:db8::1/128".
    If inputs might not be properly truncated but would be acceptable to the application consider constructing a CidrAddressBlock via create().
    
    Parameters:
    
    ip - a String of the form "217.68.0.0" or "2001:db8::".
    
    netmask - an int between 0 and 32 (for IPv4) or 128 (for IPv6). This is the number of bits, starting from the big end of the IP, that will be used for network bits (as opposed to host bits) in this CIDR block.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the params are malformed or do not represent a valid CIDR block.
  - CidrAddressBlock
```
public CidrAddressBlock(java.net.InetAddress ip)
```
  - CidrAddressBlock
```
public CidrAddressBlock(java.net.InetAddress ip,
                        int netmask)
```
- Method Detail
  - create
```
public static CidrAddressBlock create(java.net.InetAddress ip,
                                      int netmask)
```
    Attempts to construct a CIDR block from the IP address and netmask, truncating the IP address as required.
    The specified IP address portion need not be properly truncated (i.e. all the host bits need not be zero); truncation will be silently performed. For example, "1.2.3.4/24" is accepted and returns the same CidrAddressBlock as "1.2.3.0/24". Similarly, for IPv6, "2001:db8::1/32" is accepted and returns the same CidrAddressBlock as "2001:db8::/32".
    
    Parameters:
    
    ip - InetAddress, possibly requiring truncation.
    
    netmask - an int between 0 and 32 (for IPv4) or 128 (for IPv6). This is the number of bits, starting from the big end of the IP, that will be used for network bits (as opposed to host bits) when truncating the supplied InetAddress.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the params are malformed or do not represent a valid CIDR block.
    
    java.lang.NullPointerException - if a parameter is null.
  - create
```
public static CidrAddressBlock create(java.lang.String s)
```
    Attempts to construct a CIDR block from the IP address and netmask expressed as a String, truncating the IP address as required.
    The specified IP address portion need not be properly truncated (i.e. all the host bits need not be zero); truncation will be silently performed. For example, "1.2.3.4/24" is accepted and returns the same CidrAddressBlock as "1.2.3.0/24". Similarly, for IPv6, "2001:db8::1/32" is accepted and returns the same CidrAddressBlock as "2001:db8::/32".
    
    Parameters:
    
    s - String representing either a single IP address or a CIDR netblock, possibly requiring truncation.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the params are malformed or do not represent a valid CIDR block.
    
    java.lang.NullPointerException - if a parameter is null.
  - getIp
```
public java.lang.String getIp()
```
    Returns:
    
    the standard String representation of the IP portion of this CIDR block (a.b.c.d, or a:b:c::d)
    NOTE: This is not reliable for comparison operations. It is more reliable to normalize strings into InetAddresss and then compare.
    Consider:
    
    "10.11.12.0" is equivalent to "10.11.12.000"
    "2001:db8::" is equivalent to "2001:0DB8:0000:0000:0000:0000:0000:0000"
  - getInetAddress
```
public java.net.InetAddress getInetAddress()
```
  - getNetmask
```
public int getNetmask()
```
    Returns the number of leading bits (prefix size) of the routing prefix.
  - contains
```
public boolean contains(@Nullable
                        java.net.InetAddress ipAddr)
```
    Returns true if the supplied InetAddress is within this CidrAddressBlock, false otherwise.
    This can be used to test if the argument falls within a well-known network range, a la GoogleIp's isGoogleIp(), isChinaIp(), et alia.
    
    Parameters:
    
    ipAddr - InetAddress to evaluate.
    
    Returns:
    
    true if ipAddr is logically within this block, false otherwise.
  - contains
```
public boolean contains(@Nullable
                        CidrAddressBlock cidr)
```
    Returns true if the supplied CidrAddressBlock is within this CidrAddressBlock, false otherwise.
    This can be used to test if the argument falls within a well-known network range, a la GoogleIp's isGoogleIp(), isChinaIp(), et alia.
    
    Parameters:
    
    cidr - CidrAddressBlock to evaluate.
    
    Returns:
    
    true if cidr is logically within this block, false otherwise.
  - contains
```
public boolean contains(@Nullable
                        java.lang.String s)
```
    Returns true if the supplied String is within this CidrAddressBlock, false otherwise.
    This can be used to test if the argument falls within a well-known network range, a la GoogleIp's isGoogleIp(), isChinaIp(), et alia.
    
    Parameters:
    
    s - String to evaluate.
    
    Returns:
    
    true if s is logically within this block, false otherwise.
  - getAllOnesAddress
```
public java.net.InetAddress getAllOnesAddress()
```
    Returns the address that is contained in this CidrAddressBlock with the most bits set.
    This can be used to calculate the upper bound address of the address range for this CidrAddressBlock.
  - iterator
```
public java.util.Iterator<java.net.InetAddress> iterator()
```
    Specified by:
    
    iterator in interface java.lang.Iterable<java.net.InetAddress>
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(@Nullable
                      java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class CidrAddressBlock

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.lang.Iterable

Constructor Detail

CidrAddressBlock

CidrAddressBlock

CidrAddressBlock

CidrAddressBlock

Method Detail

create

create

getIp

getInetAddress

getNetmask

contains

contains

contains

getAllOnesAddress

iterator

hashCode

equals

toString