Fantom

 

final class

inet::IpAddr

sys::Obj
  inet::IpAddr

IpAddr models both IPv4 and IPv6 numeric addresses as well as provide DNS hostname resolution.

Slots

bytes

native Buf bytes()

Get the raw bytes of this address as a Buf of 4 or 16 bytes for IPv4 or IPv6 respectively. The buf position is zero.

equals

override native Bool equals(Obj? obj)

Overrides sys::Obj.equals

Equality is based on equivalent address bytes.

hash

override native Int hash()

Overrides sys::Obj.hash

Hash code is based the address bytes.

hostname

native Str hostname()

Return the hostname of this address. If a hostname was specified in make, then that string is used. Otherwise this method will perform a reverse DNS lookup potentially blocking the calling thread. If the address cannot be mapped to a hostname, then return the address in its numeric format.

isIPv4

native Bool isIPv4()

Is this a 32 bit (four byte) IP version 4 address.

isIPv6

native Bool isIPv6()

Is this a 128 bit (sixteen byte) IP version 6 address.

local

static native IpAddr local()

Return the IpAddr for the local machine.

make

static native IpAddr make(Str s)

Parse an IP address formated as an IPv4 numeric address, IPv6 numeric address, or a DNS hostname. If a hostname if provided, then it is resolved to an IP address potentially blocking the calling thread. If the address is invalid or a hostname cannot be resolved then UnknownHostErr is thrown.

Examples:

IpAddr("169.200.3.103")
IpAddr("1080:0:0:0:8:800:200C:417A")
IpAddr("1080::8:800:200C:417A")
IpAddr("::ffff:129.144.52.38")
IpAddr("somehost")
IpAddr("www.acme.com")
makeAll

static native IpAddr[] makeAll(Str s)

Resolve a hostname to all of its configured IP addresses. If a numeric IPv4 or IPv6 address is specified then a list of one IpAddr is returned. If a hostname if provided, then it is resolved to all its configured IP addresses potentially blocking the calling thread. If the address is invalid or a hostname cannot be resolved then UnknownHostErr is thrown.

makeBytes

static native IpAddr makeBytes(Buf bytes)

Make an IpAddr for the specified raw bytes. The size of the byte buffer must be 4 for IPv4 or 16 for IPv6, otherwise ArgErr is thrown. The bytes must be a memory backed buffer.

numeric

native Str numeric()

Get this address as a Str in its numeric notation. For IPv4 this is four decimal digits separated by dots. For IPv6 this is eight hexadecimal digits separated by colons.

toStr

override native Str toStr()

Overrides sys::Obj.toStr

Return the exact string passed to the constructor.