elektito/ih2torrent

Create a trackerless torrent file from an infohash.

ih2torrent

ih2torrent creates a trackerless torrent file from an infohash or a magnet URI. It uses BitTorrent DHT and the metadata protocol to find peers for the torrent and obtain its metadata.

In order to get the dependencies inside a virtualenv, run make. You need Python 3.5 or higher to run ih2torrent.

You can use pip to install ih2torrent: pip3 install ih2torrent

ih2torrent's Issues

raise NotImplementedError

This command:
python ih2torrent.py --file test.torrent "magnet:?xt=urn:btih:6d1e38aa6d10e62c827102cb5e21f2d5b3f2e090"

Return this:

[2021-11-16 20:32:29,787][INFO] Using node ID: 4927ed92175a89cb0aa5841ae5e3de76c5d6bbf6
[2021-11-16 20:32:29,800][INFO] Using router.bittorrent.com as the bootstrapping node.
[2021-11-16 20:32:29,800][INFO] Resolving: router.bittorrent.com
Exception ignored from cffi callback <function _sock_state_cb at 0x000001D717F92040>:
Traceback (most recent call last):
  File "C:\Users\Administrator\Desktop\ih2torrent\venv\lib\site-packages\pycares\__init__.py", line 99, in _sock_state_cb
    sock_state_cb(socket_fd, readable, writable)
  File "C:\Users\Administrator\Desktop\ih2torrent\venv\lib\site-packages\aiodns\__init__.py", line 111, in _sock_state_cb
    self.loop.add_reader(fd, self._handle_event, fd, READ)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python39\lib\asyncio\events.py", line 504, in add_reader
    raise NotImplementedError
NotImplementedError:

Windows 10
Python 3.9.5
aiodns==3.0.0
bencodepy==0.9.5
cffi==1.15.0
pycares==4.1.2
pycparser==2.21

Add a --version command-line option.

Add the standard --version command-line option.

Quit if there's nothing more to do.

If there are no operations going on and we've run out of nodes to try, quit with an appropriate message.

Add an option to set a timeout.

Add an option to set the timeout for the whole process, that is if the metainfo is not found by then, we give up.

Create a tracker based torrent file when a magnet URI with trackers is provided.

When we accept a magnet URI in place of the infohash, as issue #1 describes, we can create a traditional tracker based torrent file instead of a trackerless torrent. Add an option to the command-line so the user can choose the kind of torrent file created.

Update the README and project description to reflect the fact we no longer just create trackerless torrent files.

Invalid arguments are not handled gracefully.

Invalid infohashes or invalid filenames are not handled gracefully. The expected behavior is to show a clean message to the user saying what is wrong. Currently a Python stack trace is printed.

Search in order of proximity to infohash.

Currently we send get_peers requests in a first-in-first-out fashion, but it's probably better to first ask nodes with IDs closer to the infohash.

Add logging options.

Add command-line options to set a log file, and setting the log level.

Optionally use trackers to obtain peers when trackers are available.

When a magnet URI with trackers is provided, as issue #1 describes, we can use the trackers to find peers. By default we can prefer trackers when they are available. Add command-line options to force using the DHT or trackers.

Add option to display metainfo instead of writing a torrent file.

Add a command-line option to display the obtained metainfo instead of writing it to a torrent file. Use proper pretty-printing.

Deprecation warnings Python 3.8

I get the following warnings since Python 3.8:

/home/ih2torrent.py:378: DeprecationWarning: "@coroutine" decorator is depcated since Python 3.8, use "async def" instead
def ping(loop, host, port):
/home/ih2torrent.py:450: DeprecationWarning: "@coroutine" decorator is deprecated since Python 3.8, use "async def" instead
def dns_resolve(loop, name):
/home/ih2torrent.py:460: DeprecationWarning: "@coroutine" decorator is deprecated since Python 3.8, use "async def" instead
def get_metadata(loop, host, port, infohash):
/home/ih2torrent.py:565: DeprecationWarning: "@coroutine" decorator is deprecated since Python 3.8, use "async def" instead
def get_metadata_with_retries(loop, host, port, infohash):
/home/ih2torrent.py:604: DeprecationWarning: "@coroutine" decorator is deprecated since Python 3.8, use "async def" instead
def ih2torrent(loop, infohash, filename, bootstrap):
/home/ih2torrent.py:773: DeprecationWarning: Task.all_tasks() is deprecated, use asyncio.all_tasks() instead
pending = asyncio.Task.all_tasks()

I also get this error a few times:

Traceback (most recent call last):
File "/home/ih2torrent.py", line 784, in
main()
File "/home/ih2torrent.py", line 777, in main
loop.run_until_complete(asyncio.gather(*pending))
File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
return future.result()
asyncio.exceptions.CancelledError`

The code still works, but it's spitting out above's warnings/errors.

Better retry mechanism for communication with peers.

Currently we only have retries for DHT queries. We can get better performance by adding retries to peer communications:

• When we failed to connect to a peer, we can try it once or twice again, either immediately or better yet after a short delay. The peer might be only temporarily available.
• When a connection to a peer is disrupted, it might very well pay to try again, either immediately or after a while.

Deprecation Warnings

I'm getting deprecation warnings:

/home/h2torrent.py:476: DeprecationWarning: The explicit passing of coroutine objects to asyncio.wait() is deprecated since Python 3.8, and scheduled for removal in Python 3.11.
  done, pending = await asyncio.wait(
/home/ih2torrent.py:490: DeprecationWarning: The explicit passing of coroutine objects to asyncio.wait() is deprecated since Python 3.8, and scheduled for removal in Python 3.11.
  done, pending = await asyncio.wait(
/home/ih2torrent.py:523: DeprecationWarning: The explicit passing of coroutine objects to asyncio.wait() is deprecated since Python 3.8, and scheduled for removal in Python 3.11.
  done, pending = await asyncio.wait(

Pressing Ctrl-C does not always close the program gracefully.

Sometimes when Ctrl-C is pressed in the middle of execution a Python traceback is printed:

Traceback (most recent call last):
  File "./ih2torrent.py", line 620, in <module>
    loop.run_until_complete(asyncio.gather(*pending))
  File "/usr/local/lib/python3.5/asyncio/base_events.py", line 340, in run_until_complete
    raise RuntimeError('Event loop stopped before Future completed.')
RuntimeError: Event loop stopped before Future completed.

This is obviously not expected behavior. Fix it.

Accept infohash in base-32 format.

Since magnet URIs, for compatibility reasons, need to support base-32 infohashes, we might as well support them in general.

Accept magnet URIs in addition to infohashes.

Accept a magnet URI instead of the infohash on the command-line.

Add options to add bootstrapping nodes.

Add command-line options to let the user add DHT bootstrapping nodes.