struct Socket::IPAddress

Overview

IP address representation.

Holds a binary representation of an IP address, either translated from a String, or directly received from an opened connection (e.g. Socket#local_address, Socket#receive).

Example:

require "socket"

Socket::IPAddress.new("127.0.0.1", 8080)
Socket::IPAddress.new("fe80::2ab2:bdff:fe59:8e2c", 1234)

IPAddress won't resolve domains, including localhost. If you must resolve an IP, or don't know whether a String contains an IP or a domain name, you should use Addrinfo.resolve instead.

Defined in:

socket/address.cr

Constant Summary

BROADCAST = "255.255.255.255"
BROADCAST6 = "ff0X::1"
LOOPBACK = "127.0.0.1"
LOOPBACK6 = "::1"
UNSPECIFIED = "0.0.0.0"
UNSPECIFIED6 = "::"

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from struct Socket::Address

family : Family family, size : Int32 size, to_unsafe : Pointer(LibC::Sockaddr) to_unsafe

Constructor methods inherited from struct Socket::Address

from(sockaddr : Pointer(LibC::Sockaddr), addrlen) : Address from, new(family : Family, size : Int32) new, parse(uri : URI) : self
parse(uri : String) : self parse

Instance methods inherited from struct Struct

==(other) : Bool ==, hash(hasher) hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io : IO) : Nil to_s

Instance methods inherited from struct Value

==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup

Instance methods inherited from class Object

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io, root : String)
from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml

Constructor Detail

def self.from(sockaddr : Pointer(LibC::Sockaddr), addrlen) : IPAddress #

Creates an IPAddress from the internal OS representation. Supports both INET and INET6 families.


[View source]
def self.new(address : String, port : Int32) #

[View source]
def self.parse(uri : URI) : IPAddress #

Parses a Socket::IPAddress from an URI.

It expects the URI to include ://: where scheme as well as any additional URI components (such as path or query) are ignored.

host must be an IP address (v4 or v6), otherwise Socket::Error will be raised. Domain names will not be resolved.

require "socket"

Socket::IPAddress.parse("tcp://127.0.0.1:8080") # => Socket::IPAddress.new("127.0.0.1", 8080)
Socket::IPAddress.parse("udp://[::1]:8080")     # => Socket::IPAddress.new("::1", 8080)

[View source]
def self.parse(uri : String) : self #

Parses a Socket::IPAddress from an URI.

It expects the URI to include ://: where scheme as well as any additional URI components (such as path or query) are ignored.

host must be an IP address (v4 or v6), otherwise Socket::Error will be raised. Domain names will not be resolved.

require "socket"

Socket::IPAddress.parse("tcp://127.0.0.1:8080") # => Socket::IPAddress.new("127.0.0.1", 8080)
Socket::IPAddress.parse("udp://[::1]:8080")     # => Socket::IPAddress.new("::1", 8080)

[View source]

Class Method Detail

def self.valid_port?(port : Int) : Bool #

Returns true if port is a valid port number.

Valid port numbers are in the range 0..65_535.


[View source]

Instance Method Detail

def ==(other : self) #

def address : String #

Returns a String representation of the IP address.

Example:

ip_address = socket.remote_address
ip_address.address # => "127.0.0.1"

[View source]
def hash(hasher) #
Description copied from struct Struct

See Object#hash(hasher)


def inspect(io : IO) : Nil #
Description copied from struct Struct

Appends this struct's name and instance variables names and values to the given IO.

struct Point
  def initialize(@x : Int32, @y : Int32)
  end
end

p1 = Point.new 1, 2
p1.to_s    # "Point(@x=1, @y=2)"
p1.inspect # "Point(@x=1, @y=2)"

[View source]
def loopback? : Bool #

Returns true if this IP is a loopback address.

In the IPv4 family, loopback addresses are all addresses in the subnet 127.0.0.0/24. In IPv6 ::1 is the loopback address.


[View source]
def port : Int32 #

[View source]
def pretty_print(pp) #

[View source]
def private? : Bool #

Returns true if this IP is a private address.

IPv4 addresses in 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 as defined in RFC 1918 and IPv6 Unique Local Addresses in fc00::/7 as defined in RFC 4193 are considered private.


[View source]
def to_s(io : IO) : Nil #
Description copied from struct Struct

Same as #inspect(io).


[View source]
def to_unsafe : Pointer(LibC::Sockaddr) #

[View source]
def unspecified? : Bool #

Returns true if this IP is an unspecified address, either the IPv4 address 0.0.0.0 or the IPv6 address ::.


[View source]