java::net::Inet6Address Class Reference

Inheritance diagram for java::net::Inet6Address:

Inheritance graph
java::net::InetAddressjava::lang::Object
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Collaboration diagram for java::net::Inet6Address:

Collaboration graph
java::net::InetAddressjava::lang::Objectjava::lang::Stringjava::lang::Interfacejava::lang::ObjectRefjava::lang::Comparable
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List of all members.


Detailed Description

This class represents an Internet Protocol version 6 (IPv6) address.

Defined by RFC 2373: IP Version 6 Addressing Architecture.

Textual representation of IP addresses

Textual representation of IPv6 address used as input to methods takes one of the following forms:

  1. The preferred form is x:x:x:x:x:x:x:x, where the 'x's are the hexadecimal values of the eight 16-bit pieces of the address. This is the full form. For example,

    <blockquote>
    1080:0:0:0:8:800:200C:417A
    </blockquote>

    Note that it is not necessary to write the leading zeros in an individual field. However, there must be at least one numeral in every field, except as described below.

  2. Due to some methods of allocating certain styles of IPv6 addresses, it will be common for addresses to contain long strings of zero bits. In order to make writing addresses containing zero bits easier, a special syntax is available to compress the zeros. The use of "::" indicates multiple groups of 16-bits of zeros. The "::" can only appear once in an address. The "::" can also be used to compress the leading and/or trailing zeros in an address. For example,

    <blockquote>
    1080::8:800:200C:417A
    </blockquote>

  3. An alternative form that is sometimes more convenient when dealing with a mixed environment of IPv4 and IPv6 nodes is x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values of the six high-order 16-bit pieces of the address, and the 'd's are the decimal values of the four low-order 8-bit pieces of the standard IPv4 representation address, for example,

    <blockquote>
    FFFF:129.144.52.38
    ::129.144.52.38
    </blockquote>

    where "::FFFF:d.d.d.d" and "::d.d.d.d" are, respectively, the general forms of an IPv4-mapped IPv6 address and an IPv4-compatible IPv6 address. Note that the IPv4 portion must be in the "d.d.d.d" form. The following forms are invalid:

    <blockquote>
    FFFF:d.d.d
    FFFF:d.d
    d.d.d
    d.d
    </blockquote>

    The following form:

    <blockquote>
    FFFF:d
    </blockquote>

    is valid, however it is an unconventional representation of the IPv4-compatible IPv6 address,

    <blockquote>
    ::255.255.0.d
    </blockquote>

    while "::d" corresponds to the general IPv6 address "0:0:0:0:0:0:0:d".

For methods that return a textual representation as output value, the full form is used. Inet6Address will return the full form because it is unambiguous when used in combination with other textual data.

Special IPv6 address

<blockquote>
IPv4-mapped address Of the form::ffff:w.x.y.z, this IPv6 address is used to represent an IPv4 address. It allows the native program to use the same address data structure and also the same socket when communicating with both IPv4 and IPv6 nodes.

In InetAddress and Inet6Address, it is used for internal representation; it has no functional role. Java will never return an IPv4-mapped address. These classes can take an IPv4-mapped address as input, both in byte array and text representation. However, it will be converted into an IPv4 address.

</blockquote>

Public Member Functions

 Inet6Address ()
 Inet6Address (const String &hostName, const Array< jbyte > &addr)
virtual jboolean isMulticastAddress () const
 Utility routine to check if the InetAddress is an IP multicast address.
virtual jboolean isAnyLocalAddress () const
 Utility routine to check if the InetAddress in a wildcard address.
virtual jboolean isLoopbackAddress () const
 Utility routine to check if the InetAddress is a loopback address.
virtual jboolean isLinkLocalAddress () const
 Utility routine to check if the InetAddress is an link local address.
virtual jboolean isSiteLocalAddress () const
 Utility routine to check if the InetAddress is a site local address.
virtual jboolean isMCGlobal () const
 Utility routine to check if the multicast address has global scope.
virtual jboolean isMCNodeLocal () const
 Utility routine to check if the multicast address has node scope.
virtual jboolean isMCLinkLocal () const
 Utility routine to check if the multicast address has link scope.
virtual jboolean isMCSiteLocal () const
 Utility routine to check if the multicast address has site scope.
virtual jboolean isMCOrgLocal () const
 Utility routine to check if the multicast address has organization scope.
String getHostAddress () const
 Returns the IP address string in textual presentation form.

Static Public Member Functions

static String numericToTextFormat (const Array< jbyte > &address)
static Ref< Array
< jbyte > > 
textToNumericFormat (const String &src)
static jboolean isIPv4MappedAddress (const Array< jbyte > &addr)
 Utility routine to check if the InetAddress is an IPv4 mapped IPv6 address.
static Ref< Array
< jbyte > > 
convertFromIPv4MappedAddress (const Array< jbyte > &addr)

Static Public Attributes

static const jint INADDRSZ


Constructor & Destructor Documentation

java::net::Inet6Address::Inet6Address (  ) 

java::net::Inet6Address::Inet6Address ( const String hostName,
const Array< jbyte > &  addr 
)


Member Function Documentation

static String java::net::Inet6Address::numericToTextFormat ( const Array< jbyte > &  address  )  [static]

static Ref<Array<jbyte> > java::net::Inet6Address::textToNumericFormat ( const String src  )  [static]

static jboolean java::net::Inet6Address::isIPv4MappedAddress ( const Array< jbyte > &  addr  )  [static]

Utility routine to check if the InetAddress is an IPv4 mapped IPv6 address.

Returns:
a boolean indicating if the InetAddress is an IPv4 mapped IPv6 address; or false if address is IPv4 address.

static Ref<Array<jbyte> > java::net::Inet6Address::convertFromIPv4MappedAddress ( const Array< jbyte > &  addr  )  [static]

virtual jboolean java::net::Inet6Address::isMulticastAddress (  )  const [virtual]

Utility routine to check if the InetAddress is an IP multicast address.

11111111 at the start of the address identifies the address as being a multicast address.

Returns:
a boolean indicating if the InetAddress is an IP multicast address
Since:
JDK1.1

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isAnyLocalAddress (  )  const [virtual]

Utility routine to check if the InetAddress in a wildcard address.

Returns:
a boolean indicating if the Inetaddress is a wildcard address.
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isLoopbackAddress (  )  const [virtual]

Utility routine to check if the InetAddress is a loopback address.

Returns:
a boolean indicating if the InetAddress is a loopback address; or false otherwise.
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isLinkLocalAddress (  )  const [virtual]

Utility routine to check if the InetAddress is an link local address.

Returns:
a boolean indicating if the InetAddress is a link local address; or false if address is not a link local unicast address.
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isSiteLocalAddress (  )  const [virtual]

Utility routine to check if the InetAddress is a site local address.

Returns:
a boolean indicating if the InetAddress is a site local address; or false if address is not a site local unicast address.
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isMCGlobal (  )  const [virtual]

Utility routine to check if the multicast address has global scope.

Returns:
a boolean indicating if the address has is a multicast address of global scope, false if it is not of global scope or it is not a multicast address
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isMCNodeLocal (  )  const [virtual]

Utility routine to check if the multicast address has node scope.

Returns:
a boolean indicating if the address has is a multicast address of node-local scope, false if it is not of node-local scope or it is not a multicast address
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isMCLinkLocal (  )  const [virtual]

Utility routine to check if the multicast address has link scope.

Returns:
a boolean indicating if the address has is a multicast address of link-local scope, false if it is not of link-local scope or it is not a multicast address
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isMCSiteLocal (  )  const [virtual]

Utility routine to check if the multicast address has site scope.

Returns:
a boolean indicating if the address has is a multicast address of site-local scope, false if it is not of site-local scope or it is not a multicast address
Since:
1.4

Reimplemented from java::net::InetAddress.

virtual jboolean java::net::Inet6Address::isMCOrgLocal (  )  const [virtual]

Utility routine to check if the multicast address has organization scope.

Returns:
a boolean indicating if the address has is a multicast address of organization-local scope, false if it is not of organization-local scope or it is not a multicast address
Since:
1.4

Reimplemented from java::net::InetAddress.

String java::net::Inet6Address::getHostAddress (  )  const [virtual]

Returns the IP address string in textual presentation form.

Returns:
the raw IP address in a string format.
Since:
JDK1.0.2

Reimplemented from java::net::InetAddress.


Member Data Documentation

const jint java::net::Inet6Address::INADDRSZ [static]


The documentation for this class was generated from the following file:
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