Go Node and SDK for the Neo blockchain.
This project aims to be a full port of the original C# Neo project. A complete toolkit for the NEO blockchain, including:
- Consensus node
- RPC node & client
- CLI tool
- Smart contract compiler
- NEO virtual machine
- Smart contract examples
- Oracle service
- State validation service
This branch (master) is Neo N3-compatible. For the current Legacy-compatible version please refer to the master-2.x branch and releases before 0.80.0 (0.7X.Y track).
NeoGo is distributed as a single binary that includes all the functionality
provided (but smart contract compiler requires Go compiler to operate). You
can grab it from releases
page, use a Docker image (see
Docker Hub for various releases of
:latest points to the latest release) or build yourself.
To build NeoGo you need Go 1.15+ and
The resulting binary is
Building on Windows
To build NeoGo on Windows platform we recommend you to install
make from MinGW
package. Then you can build NeoGo with:
The resulting binary is
We also recommend you to switch the Windows Firewall off for further NeoGo node run.
Running a node
A node needs to connect to some network, either local one (usually referred to
privnet) or public (like
testnet). Network configuration
is stored in a file and NeoGo allows you to store multiple files in one
./config by default) and easily switch between them using network
To start Neo node on private network use:
Or specify a different network with appropriate flag like this:
./bin/neo-go node --mainnet
Available network flags:
To run a consensus/committee node refer to consensus documentation.
By default the
CMD is set to run a node on
privnet, so to do this simply run:
docker run -d --name neo-go -p 20332:20332 -p 20331:20331 nspccdev/neo-go
Which will start a node on
privnet and expose node's ports
20331 (JSON-RPC server).
Importing mainnet/testnet dump files
If you want to jump-start your mainnet or testnet node with chain archives provided by NGD follow these instructions (when they'd be available for 3.0 networks):
$ wget .../chain.acc.zip # chain dump file $ unzip chain.acc.zip $ ./bin/neo-go db restore -m -i chain.acc # for testnet use '-t' flag instead of '-m'
The process differs from the C# node in that block importing is a separate mode, after it ends the node can be started normally.
Running a private network
Refer to consensus node documentation.
Smart contract development
Please refer to neo-go smart contract development workshop that shows some simple contracts that can be compiled/deployed/run using neo-go compiler, SDK and private network. For details on how Go code is translated to Neo VM bytecode and what you can and can not do in smart contract please refer to the compiler documentation.
Refer to examples for more NEO smart contract examples written in Go.
NeoGo differs substantially from C# implementation in its approach to wallets. NeoGo wallet is just a NEP-6 file that is used by CLI commands to sign various things. There is no database behind it, the blockchain is the database and CLI commands use RPC to query data from it. At the same time it's not required to open the wallet on RPC node to perform various actions (unless your node is providing some service for the network like consensus or oracle nodes).
How to configure Prometheus or Pprof:
config/protocol.*.yml there is
Prometheus: Enabled: true Port: 2112
where you can switch on/off and define port. Prometheus is enabled and Pprof is disabled by default.
Feel free to contribute to this project after reading the contributing guidelines.
Before starting to work on a certain topic, create an new issue first, describing the feature/topic you are going to implement.
- @roman-khimov on GitHub
- @AnnaShaleva on GitHub
- @fyrchik on GitHub
- Reach out to us on the NEO Discord channel
- Open-source MIT