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class Resolv::Hosts

Parent:: Object

Resolv::Hosts is a hostname resolver that uses the system hosts file.

Constants

DefaultFileName

Public Class Methods

new(filename = DefaultFileName) Show source

# File lib/resolv.rb, line 181
def initialize(filename = DefaultFileName)
  @filename = filename
  @mutex = Thread::Mutex.new
  @initialized = nil
end

Creates a new Resolv::Hosts, using filename for its data source.

Public Instance Methods

each_address(name, &proc) Show source

# File lib/resolv.rb, line 235
def each_address(name, &proc)
  lazy_initialize
  @name2addr[name]&.each(&proc)
end

Iterates over all IP addresses for name retrieved from the hosts file.

each_name(address, &proc) Show source

# File lib/resolv.rb, line 260
def each_name(address, &proc)
  lazy_initialize
  @addr2name[address]&.each(&proc)
end

Iterates over all hostnames for address retrieved from the hosts file.

getaddress(name) Show source

# File lib/resolv.rb, line 218
def getaddress(name)
  each_address(name) {|address| return address}
  raise ResolvError.new("#{@filename} has no name: #{name}")
end

Gets the IP address of name from the hosts file.

getaddresses(name) Show source

# File lib/resolv.rb, line 226
def getaddresses(name)
  ret = []
  each_address(name) {|address| ret << address}
  return ret
end

Gets all IP addresses for name from the hosts file.

getname(address) Show source

# File lib/resolv.rb, line 243
def getname(address)
  each_name(address) {|name| return name}
  raise ResolvError.new("#{@filename} has no address: #{address}")
end

Gets the hostname of address from the hosts file.

getnames(address) Show source

# File lib/resolv.rb, line 251
def getnames(address)
  ret = []
  each_name(address) {|name| ret << name}
  return ret
end

Gets all hostnames for address from the hosts file.

Ruby Core © 1993–2020 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.