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IPSocket
Public Class Methods
getaddress(s)
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Returns a String based representation of a valid DNS hostname,
IPv4 or IPv6 address.
IPSocket.getaddress 'localhost' #=> "::1" IPSocket.getaddress 'broadcasthost' #=> "255.255.255.255" IPSocket.getaddress 'www.ruby-lang.org' #=> "221.186.184.68" IPSocket.getaddress 'www.ccc.de' #=> "2a00:1328:e102:ccc0::122"
# File ipaddr.rb, line 63
def getaddress(s)
if valid?(s)
s
elsif %r\A[-A-Za-z\d.]+\Z/ =~ s
getaddress_orig(s)
else
raise ArgumentError, "invalid address"
end
end
Also aliased as: getaddress_orig
valid?(addr)
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Returns true if addr is either a valid IPv4 or
IPv6 address.
# File ipaddr.rb, line 50
def valid?(addr)
valid_v4?(addr) || valid_v6?(addr)
end
valid_v4?(addr)
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Returns true if addr is a valid IPv4 address.
# File ipaddr.rb, line 28
def valid_v4?(addr)
if %r\A(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\Z/ =~ addr
return $~.captures.all? {|i| i.to_i < 256}
end
return false
end
valid_v6?(addr)
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Returns true if addr is a valid IPv6 address.
# File ipaddr.rb, line 36
def valid_v6?(addr)
# IPv6 (normal)
return true if %r\A[\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*\Z/ =~ addr
return true if %r\A[\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*::([\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*)?\Z/ =~ addr
return true if %r\A::([\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*)?\Z/ =~ addr
# IPv6 (IPv4 compat)
return true if %r\A[\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*:/ =~ addr && valid_v4?($')
return true if %r\A[\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*::([\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*:)?/ =~ addr && valid_v4?($')
return true if %r\A::([\dA-Fa-f]{1,4}(:[\dA-Fa-f]{1,4})*:)?/ =~ addr && valid_v4?($')
false
end
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