lua libp2p

This is the start of an implementation of libp2p in lua. It does a few things, i'm not great at lua, but it's been fun to write

Dependencies

These modules depend on some lua packages, luasocket and lua-protobuf. You can install these with luarocks:

luarocks install luasocket
luarocks install lua-protobuf

Libp2p implementation notes

• First, implement multistream select
  • Requires implementing Uvarint parsing
  • Helpful to use multistream test daemon
• Skip encryption for now, use '/plaintext/1.0.0' to move forward
• Implement multiplex, spec here
  • For every incoming stream you get, run multistream select negotiate
• Implement the 'switch'
  • switch (called 'swarm' in go-ipfs) handles dialing peers, and incoming connects
  • exposes 'NewStream(Protocol)'
  • is given protocol handlers to call for new incoming streams
• Implement identify
  • Grab the protobuf, get a parser working for that
  • When you get a new stream for identify, fill out that protobuf and send it, with a uvarint length prefix
  • When you open a stream for identify (new stream, multistream select /ipfs/id/1.0.0) you read a length delimited protobuf from the other peer
• Implement ping
  • Open stream, multistream negotiate /ipfs/ping/1.0.0
  • Write a random 32 byte value
  • read back that same 32 byte value
  • time that process
  • repeat as often as needed
• Testing: Run a go-ipfs node with ipfs daemon --disable-transport-encryption

TODO:

• implement secio
• implement multiaddr
• write more TODOs