Client Implementation Status

This page contains a list of major RLPx features and the current status of those features for client implementations.

Known Issues

• Go,C++,Py uses left128 instead of right128
• whether to update mac state after sending mac digest

Node Discovery

• Go [ ] C++ [ ] Py [ ]: discovery performed via 8 bits-per-hop routing
• Go [x] C++ [x] Py [ ]: udp addresses determined by socket address of recvd Ping packets
• Go [x] C++ [x] Py [x]: tcp addresses determined by contents of Ping packet
• Go [ ] C++ [ ] Py [x]: tcp addresses are only updated upon receipt of Pong packet
• Go [x] C++ [x] Py [x]: Signed discovery packets
• Go [x] C++ [ ] Py [x]: idle bucket refresh: for each bucket which, isn't empty or is empty and furthest away, and which hasn't been touched in 3600 seconds, pick a random value in the range of the bucket and perform discovery for that value
• Go [x] C++ [x] Py [x]: perform discovery protocol with a concurrency of 3
• Go [x] C++ [ ] Py [x]: timeout any packet operation if response is not received within 500ms
• Go [x] C++ [x] Py [x!]: distance based on xor(sha3(NodeIdA),sha3(NodeIdB))

Alex WiP:

• peer protocol maintains an ideal peer count

Authentication Handshake

• Go
• C++
• Py
• Java
• JS

Framing

• Go [ ] C++ [ ] Py [x]: basic frame, move protocol-type into frame header (replace magic sequence w/frame header)
• Go [x] C++ [x] Py [x]: mac of header and frame
• Go [ ] C++ [ ] Py []: chunking with static 1KB frame size (requires fair queueing)
• Go [ ] C++ [ ] Py [ ]: poc9+ sequence-ids for non-chunked packets
• Go [ ] C++ [ ] Py [x!]: poc9+ dynamic framing

Flow Control

• Go [ ] C++ [ ] Py [ ]: fair queueing (required for chunking)
• Go [ ] C++ [ ] Py [ ]: DeltaUpdate packet (required for fair queueing)
• Go [ ] C++ [ ] Py [x!]: poc9+ dynamic framing

x! py implemented but not active

Encryption

• Go
• C++
• Py
• Java
• JS