Secure. Super Light. Web3.

An Ethereum Chain Fork for the Web3

Diode Miner & Traffic Gateway

This server is the main Diode blockchain node. It implements both Diode PEER and EDGE protocols. After startup it will automatically connect to the network, and start mining and start acting as a traffic relay.

Traffic Gateways should always be setup on publicly reachable interfaces with a public IP. If the Node is not reachable from other nodes it might eventually blocked.

By default it will mine using 75% of one CPU. This number can be controlled or set to 'disabled' using the environment variable WORKER_MODE

Alternative it can be specified using an additional config file in config/diode.exs:

use Mix.Config

System.put_env("WORKER_MODE", "50")
# System.put_env("WORKER_MODE", "disabled")

Default Ports

TCP port bindings can be controlled through environment variables. The default bindings are:

Variable	Description	Default Port(s)
RPC_PORT	Ethereum JSON API endpoint	8545
RPCS_PORT	SSL version of RPC_PORT*	8443
EDGE2_PORT	Client Communication Port	41046,443,993,1723,10000
PEER_PORT	Miner-To-Miner Communication Port	51054

RPCS_PORT is only used & needed for access from Web2 services such as the blockchain explorer at https://diode.io/prenet/ - the port can be ignored in most deployments.

EDGE2_PORT and PEER_PORT support multiple port numbers given by a comma separated list.

Defining the Wallet to be used

By default the miner will autogenerate a Wallet on startup. This wallet can be inspected on the remote shell:

> ./remsh
iex> Wallet.printable(Diode.miner())

And it's private key can be printed and saved for backup using:

> ./remsh
iex> Base16.encode(Wallet.privkey!(Diode.miner()))

To inject a stored Wallet into the server the enviornment variable PRIVATE can be setup, before starting the miner.

export PRIVATE=0xXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
supervise .

Pre-Requisites

• Elixir 1.10.4
• make & autoconf & libtool-bin & gcc & g++ & boost
• daemontools

Building

mix deps.get
mix compile

erl_nif.h not found

In case you receive the erl_nif.h not found error add this:

export CFLAGS=-I`erl -eval 'io:format("~s", [lists:concat([code:root_dir(), "/erts-", erlang:system_info(version), "/include"])])' -s init stop -noshell`

Building on macOS

On macOS after installing boost with brew you might need to add it to the environment variables, so the compiler can find it:

brew install boost
export CFLAGS=-I`brew --prefix boost`/include 
export LDFLAGS=-L`brew --prefix boost`/lib

Running tests

make test

Using for smart contract development

The diode server can be used as RPC server for Smart Contract development. To start a local network similiar to ganache there is a predefined shell script. Just run:

./dev

And a dedicated local rpc server start-up

Running

The initial syncing of the network will take multiple hours. So it's advised to start directly with a superviser such as from the daemontools. To start with that on macOS or linux run:

supervise .

Diferences from main Ethereuem (geth)

• Block Header: We added the Miner Signature for BlockQuick
• No ommers
• EVM
  • 100% Constantinople instruction set
  • blockhash() limit has been extended from the 256 previous blocks to previous 131072 blocks instead
• Protocols
  • Node-to-Node Protocol (PEER) has been replaced to implement Gateway functionality
  • Node-to-Edge Protocol (EDGE) has been added for communication with IoT devices, desktop, mobile and other nano client applications.
• RPC

  • Mostly compatible (please report issues when you find a difference to the official Ethereum RPC)

  • Added Diode Commands

    • dio_getObject (object_key)

      Fetches one object such as device information from the Kademlia-Network

    • dio_getNode (node_key)

      Fetches information about the specified node when existing.

    • dio_getPool

      Returns the current transaction pool.

    • dio_codeCount* (hash)

      Returns the number of accounts that have a matching code hash. This is usefull to count the deployments of a certain contract.

    • dio_codeGroups*

      Returns code hashes and counts of all deployed contracts. (Likely to be removed)

    • dio_supply

      Returns the existing supply of DIO in the network.

    • dio_network

      Returns the network of connected Miners known to the current node.

    • dio_accounts*

      Returns a list of known accounts.

    Those commands with a * will likely be removed or changed when the network has grown beyond certain bounds making these calls harder to scale.