NDNgo: Named Data Networking in Go

NDNgo is a minimal Named Data Networking library compatible with the NDN-DPDK forwarder. The main purpose of this library is for implementing unit tests and management functionality of NDN-DPDK. It also serves as a demonstration on how to create a library compatible with NDN-DPDK.

NDNgo does not depend on Cgo, and can be used in external projects via Go Modules. It is intended to be cross-platform, and part of the library can be compiled for WebAssembly via TinyGo compiler. However, this is not a high performance library, and there is no API stability guarantees.

Features

Packet encoding and decoding

• General purpose TLV codec (in package tlv)
• Interest and Data: v0.3 format only
  • TLV evolvability: yes
  • Forwarding hint: yes
  • Signed Interest: basic support
• NDNLPv2
  • Fragmentation and reassembly: partial
  • Nack: yes
  • PIT token: yes
  • Congestion mark: yes
  • Link layer reliability: no
• Naming Convention: rev3 format (TLV-TYPE numbers)

Transports

• Unix stream, UDP unicast, TCP (in package sockettransport)
• Ethernet with AF_PACKET socket (in package ethertransport)
• Shared memory with local NDN-DPDK forwarder via memif (in package memiftransport)
• WebSocket for WebAssembly (in package wasmtransport)

KeyChain

• Encryption: no
• Signing algorithms
  • SHA256: yes
  • ECDSA: yes
  • RSA: yes
  • HMAC-SHA256: no
  • Ed25519: proof of concept only
  • Null: yes
• NDN certificates: basic support
  • SafeBag: import and export
• Persistent key and certificate storage: no
• Trust schema: no

Application layer services

• Endpoint: yes
• Segmented object: consumer and producer (in package segmented)
• Realtime Data Retrieval (RDR): metadata structure (in package rdr)

Management integration:

• Connecting to NDN-DPDK: yes (in package gqlmgmt)
• Connecting to NFD and NDNd: yes (in package nfdmgmt)
• NDN-FCH 2021: client (in package fch)

Getting Started

The best places to get started are:

• Consume function in package endpoint: express an Interest and wait for response, with automatic retransmissions and Data verification.
• Produce function in package endpoint: start a producer, with automatic Data signing.
• l3.Face type in package l3: network layer face abstraction, for low-level programming.

Examples are in command ndndpdk-godemo.