BitTorrent client for P2P filesharing

1. Download desired contents:

• A LocalFileDataSource created and stored within the local graph store contains a torrent_file_name Informational. This refers to the torrent containing the location of the desired contents on the BitTorrent. A torrent is used to locate files on the File System [ BEP 3 ]. A DataSource defines attributes about the contents that it represents.

Module t describes the DataSource attributes:

def owm_data(ns):
    ns.context.add_import(ConnectomeCSVDataSource.definition_context)
    ns.context(ConnectomeCSVDataSource)(
    key = '2000_connections',
    csv_file_name = 'connectome.csv',
    torrent_file_name = 'd9da5ce947c6f1c127dfcdc2ede63320.torrent'
 )

The DataSource can be created and stored on the local graph with:

$ owm save t

The DataSource identifier can be used to see contents stored in the local graph with:

$ owm source show ConnectomeCSVDataSource:2000_connections

ConnectomeCSVDataSource

CSV file name: ‘connectome.csv’

File name: ‘connectome.csv’

Torrent file name: ‘d9da5ce947c6f1c127dfcdc2ede63320.torrent’

• The BitTorrentDataSourceDirLoader class inherits from the DataSourceDirLoader and overrides its load () method. Google Drive stores the torrents uploaded by other researchers. load() fetches the torrent refered to in torrent_file_name of the DataSource, performs DataTranslator from one form to another and then adds the torrent to the BitTorrent Client for downloading its contents.

This BitTorrent Client is available on PyPI and is included in the owmeta_core setup.

To install separately:

$ pip install torrent-client

For reference, use the torrent-client repository and its usage information with:

$ torrent_cli.py -h

The DataSourceDirLoader attribute - base_directory, which is set in the BitTorrentDataSourceDirLoader constructor is where both the torrent and its contents are downloaded:

content = BitTorrentDataSourceDirLoader("./")

• Within the .owm directory we have the credentials.json and token.pickle these are for authentication of the Google Drive. For the purpose of access control the client_secret required by credentials.json will only be shared by owmeta maintainers.

• The torrent file name is the MD5 message digest of its contents. If the hash of the downloaded contents is the same as its torrent name the data is unaltered.

Data-Integrity is to be checked after 100% download completion:

$ python3 integrity.py 'd9da5ce947c6f1c127dfcdc2ede63320.torrent' 'Merged_Nuclei_Stained_Worm.zip'

2. Upload your contents:

• On an AWS EC2 instance is running a Nginx WSGI and a Flask Server to accept .zip content file uploads. Visit this Elastic IP address [13.235.204.78] to upload your files by browsing through your filesystem and then clicking the Submit Query button.

• This will create a torrent and seed your contents in parts, to other peers on the BitTorrent network. Content can then be downloaded as described above.