class HTTPX::Resolver::Native

  1. lib/httpx/resolver/native.rb
Superclass: Resolver

Methods

Public Class

  1. new

Public Instance

  1. <<
  2. call
  3. close
  4. closed?
  5. handle_socket_timeout
  6. interests
  7. state
  8. timeout
  9. to_io

Constants

DEFAULTS = { nameserver: nil, **Resolv::DNS::Config.default_config_hash, packet_size: 512, timeouts: Resolver::RESOLVE_TIMEOUT, }.freeze  
DNS_PORT = 53  

Attributes

state [R]

Public Class methods

new(family, options)
[show source] 
   # File lib/httpx/resolver/native.rb
24 def initialize(family, options)
25   super
26   @ns_index = 0
27   @resolver_options = DEFAULTS.merge(@options.resolver_options)
28   @socket_type = @resolver_options.fetch(:socket_type, :udp)
29   @nameserver = if (nameserver = @resolver_options[:nameserver])
30     nameserver = nameserver[family] if nameserver.is_a?(Hash)
31     Array(nameserver)
32   end
33   @ndots = @resolver_options.fetch(:ndots, 1)
34   @search = Array(@resolver_options[:search]).map { |srch| srch.scan(/[^.]+/) }
35   @_timeouts = Array(@resolver_options[:timeouts])
36   @timeouts = Hash.new { |timeouts, host| timeouts[host] = @_timeouts.dup }
37   @connections = []
38   @queries = {}
39   @read_buffer = "".b
40   @write_buffer = Buffer.new(@resolver_options[:packet_size])
41   @state = :idle
42 end

Public Instance methods

<<(connection)
[show source] 
   # File lib/httpx/resolver/native.rb
88 def <<(connection)
89   if @nameserver.nil?
90     ex = ResolveError.new("No available nameserver")
91     ex.set_backtrace(caller)
92     connection.force_reset
93     throw(:resolve_error, ex)
94   else
95     @connections << connection
96     resolve
97   end
98 end
call()
[show source] 
   # File lib/httpx/resolver/native.rb
56 def call
57   case @state
58   when :open
59     consume
60   end
61   nil
62 rescue Errno::EHOSTUNREACH => e
63   @ns_index += 1
64   nameserver = @nameserver
65   if nameserver && @ns_index < nameserver.size
66     log { "resolver: failed resolving on nameserver #{@nameserver[@ns_index - 1]} (#{e.message})" }
67     transition(:idle)
68     @timeouts.clear
69   else
70     handle_error(e)
71   end
72 rescue NativeResolveError => e
73   handle_error(e)
74 end
close()
[show source] 
   # File lib/httpx/resolver/native.rb
44 def close
45   transition(:closed)
46 end
closed?()
[show source] 
   # File lib/httpx/resolver/native.rb
48 def closed?
49   @state == :closed
50 end
handle_socket_timeout(interval)
[show source] 
    # File lib/httpx/resolver/native.rb
108 def handle_socket_timeout(interval)
109   do_retry(interval)
110 end
interests()
[show source] 
   # File lib/httpx/resolver/native.rb
76 def interests
77   case @state
78   when :idle
79     transition(:open)
80   when :closed
81     transition(:idle)
82     transition(:open)
83   end
84 
85   calculate_interests
86 end
timeout()
[show source] 
    # File lib/httpx/resolver/native.rb
100 def timeout
101   return if @connections.empty?
102 
103   @start_timeout = Utils.now
104   hosts = @queries.keys
105   @timeouts.values_at(*hosts).reject(&:empty?).map(&:first).min
106 end
to_io()
[show source] 
   # File lib/httpx/resolver/native.rb
52 def to_io
53   @io.to_io
54 end