class Resolv::Hosts
Resolv::Hosts
is a hostname resolver that uses the system hosts file.
Constants
- DefaultFileName
Public Class Methods
new(filename = DefaultFileName)
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Creates a new Resolv::Hosts
, using filename
for its data source.
# File resolv.rb, line 183 def initialize(filename = DefaultFileName) @filename = filename @mutex = Thread::Mutex.new @initialized = nil end
Public Instance Methods
each_address(name, &proc)
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Iterates over all IP addresses for name
retrieved from the hosts file.
# File resolv.rb, line 237 def each_address(name, &proc) lazy_initialize @name2addr[name]&.each(&proc) end
each_name(address, &proc)
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Iterates over all hostnames for address
retrieved from the hosts file.
# File resolv.rb, line 262 def each_name(address, &proc) lazy_initialize @addr2name[address]&.each(&proc) end
getaddress(name)
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Gets the IP address of name
from the hosts file.
# File resolv.rb, line 220 def getaddress(name) each_address(name) {|address| return address} raise ResolvError.new("#{@filename} has no name: #{name}") end
getaddresses(name)
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Gets all IP addresses for name
from the hosts file.
# File resolv.rb, line 228 def getaddresses(name) ret = [] each_address(name) {|address| ret << address} return ret end
getname(address)
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Gets the hostname of address
from the hosts file.
# File resolv.rb, line 245 def getname(address) each_name(address) {|name| return name} raise ResolvError.new("#{@filename} has no address: #{address}") end
getnames(address)
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Gets all hostnames for address
from the hosts file.
# File resolv.rb, line 253 def getnames(address) ret = [] each_name(address) {|name| ret << name} return ret end