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Class: Resolv::DNS::Resource::IN::SRV

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Resolv::DNS::Resource, ::Resolv::DNS::Query
Instance Chain:
self, ::Resolv::DNS::Resource, ::Resolv::DNS::Query
Inherits: Resolv::DNS::Resource
Defined in: lib/resolv.rb

Overview

SRV resource record defined in RFC 2782

These records identify the hostname and port that a service is available at.

Constant Summary

::Resolv::DNS::Resource - Inherited

ClassHash, ClassInsensitiveTypes, ClassValue

Class Method Summary

::Resolv::DNS::Resource - Inherited

.decode_rdata, .get_class

::Resolv::DNS::Query - Inherited

.decode_rdata

Instance Attribute Summary

  • #port readonly

    The port on this target host of this service.

  • #priority readonly

    The priority of this target host.

  • #target readonly

    The domain name of the target host.

  • #weight readonly

    A server selection mechanism.

::Resolv::DNS::Resource - Inherited

#ttl

Remaining Time To Live for this ::Resolv::DNS::Resource.

Instance Method Summary

::Resolv::DNS::Resource - Inherited

#==, #encode_rdata, #eql?, #hash

::Resolv::DNS::Query - Inherited

#encode_rdata

Constructor Details

.new(priority, weight, port, target) ⇒ SRV

Create a SRV resource record.

See the documentation for #priority, #weight, #port and #target for #priority, #weight, +port and #target respectively.

[ GitHub ] 

  


# File 'lib/resolv.rb', line 2743



def initialize(priority, weight, port, target)
  @priority = priority.to_int
  @weight = weight.to_int
  @port = port.to_int
  @target = Name.create(target)
end


  







Class Method Details



  

    .decode_rdata(msg)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2792



def self.decode_rdata(msg) # :nodoc:
  priority, = msg.get_unpack("n")
  weight,   = msg.get_unpack("n")
  port,     = msg.get_unpack("n")
  target    = msg.get_name
  return self.new(priority, weight, port, target)
end


  







Instance Attribute Details



  

    #port   (readonly)
  



  

    

The port on this target host of this service.



The range is 0-65535.


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2776



attr_reader :port


  








  

    #priority   (readonly)
  



  

    

The priority of this target host.



A client MUST attempt to contact the target host with the lowest-numbered priority it can reach; target hosts with the same priority SHOULD be tried in an order defined by the weight field. The range is 0-65535.  Note that it is not widely implemented and should be set to zero.


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2758



attr_reader :priority


  








  

    #target   (readonly)
  



  

    

The domain name of the target host.



A target of “.” means that the service is decidedly not available at this domain.


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2783



attr_reader :target


  








  

    #weight   (readonly)
  



  

    

A server selection mechanism.



The weight field specifies a relative weight for entries with the same priority. Larger weights SHOULD be given a proportionately higher probability of being selected. The range of this number is 0-65535.  Domain administrators SHOULD use Weight 0 when there isn’t any server selection to do, to make the RR easier to read for humans (less noisy). Note that it is not widely implemented and should be set to zero.


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2770



attr_reader :weight


  







Instance Method Details



  

    #encode_rdata(msg)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2785



def encode_rdata(msg) # :nodoc:
  msg.put_pack("n", @priority)
  msg.put_pack("n", @weight)
  msg.put_pack("n", @port)
  msg.put_name(@target, compress: false)
end