Class: QuartzTorrent::Extension

Inherits:
Object
  • Object
show all
Defined in:
lib/quartz_torrent/extension.rb

Overview

This class contains constants that represent our numbering of the Bittorrent peer-protocol extensions we support. It also has some utility methods related to extensions.

Constant Summary collapse

MetadataExtensionId =

The metadata extension (BEP 9)

1

Class Method Summary collapse

Class Method Details

.createExtendedHandshake(info) ⇒ Object

Create an ExtendedHandshake object based on the passed Torrent metadata info struct.

Parameters:

  • info —

    The torrent metadata info struct. It is used to determine the size to send when negotiating the metadata extension.



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# File 'lib/quartz_torrent/extension.rb', line 13

def self.createExtendedHandshake(info)
  msg = ExtendedHandshake.new
  
  extensionIds = {
    'ut_metadata' => MetadataExtensionId
  }

  msg.dict['m'] = extensionIds

  if info
    msg.dict['metadata_size'] = info.bencode.length
  else
    msg.dict['metadata_size'] = 0
  end

  msg
end

.peerMsgClassForExtensionName(info) ⇒ Object

Get the class to use to serialize and unserialize the specified Bittorent extension. Returns nil if we don’t support that extension.

Parameters:

  • info —

    The name of a bittorrent extension as specified in the BEP, for example ‘ut_metadata’.



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# File 'lib/quartz_torrent/extension.rb', line 33

def self.peerMsgClassForExtensionName(info)
  if info == 'ut_metadata'
    ExtendedMetaInfo
  else
    nil
  end
end