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README
LGPL-3.0

Go Simplechain

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Official golang implementation of the Simplechain protocol.

Automated builds are available for stable releases and the unstable master branch.

Binary archives are published at https://github.com/simplechain-org/go-simplechain/releases/.

Simplechain development

Simplechain Community Incentive System

Bug Bounty of Simplechain Community

Building the source

Building sipe requires both a Go (version 1.13 or later) and a C compiler. You can install them using your favourite package manager. Once the dependencies are installed, run

make sipe

Run tests

make test

in additional, blockchain tests of the scrypt consensus, need download simplechain-org/testdata

git submodule update --init
make test

Running sipe

Going through all the possible command line flags is out of scope here (please consult our CLI Wiki page), but we've enumerated a few common parameter combos to get you up to speed quickly on how you can run your own Sipe instance.

Full node on the main Simplechain network

By far the most common scenario is people wanting to simply interact with the Simplechain network: create accounts; transfer funds; deploy and interact with contracts. For this particular use-case the user doesn't care about years-old historical data, so we can fast-sync quickly to the current state of the network. To do so:

$ sipe console

This command will:

  • Start sipe in fast sync mode (default, can be changed with the --syncmode flag), causing it to download more data in exchange for avoiding processing the entire history of the Simplechain network, which is very CPU intensive.
  • Start up Sipe's built-in interactive JavaScript console, (via the trailing console subcommand) through which you can invoke all official web3 methods as well as Sipe's own management APIs. This too is optional and if you leave it out you can always attach to an already running Sipe instance with Sipe attach.

Full node on the Simplechain test network

Transitioning towards developers, if you'd like to play around with creating Simplechain contracts, you almost certainly would like to do that without any real money involved until you get the hang of the entire system. In other words, instead of attaching to the main network, you want to join the test network with your node, which is fully equivalent to the main network, but with play-Ether only.

$ sipe --testnet console

The console subcommand have the exact same meaning as above and they are equally useful on the testnet too. Please see above for their explanations if you've skipped to here.

Specifying the --testnet flag however will reconfigure your Sipe instance a bit:

  • Instead of using the default data directory (~/.simplechain on Linux for example), Sipe will nest itself one level deeper into a testnet subfolder (~/.simplechain/testnet on Linux). Note, on OSX and Linux this also means that attaching to a running testnet node requires the use of a custom endpoint since sipe attach will try to attach to a production node endpoint by default. E.g. sipe attach <datadir>/testnet/sipe.ipc. Windows users are not affected by this.
  • Instead of connecting the main Simplechain network, the client will connect to the test network, which uses different P2P bootnodes, different network IDs and genesis states.

Note: Although there are some internal protective measures to prevent transactions from crossing over between the main network and test network, you should make sure to always use separate accounts for play-money and real-money. Unless you manually move accounts, Sipe will by default correctly separate the two networks and will not make any accounts available between them.

Configuration

As an alternative to passing the numerous flags to the sipe binary, you can also pass a configuration file via:

$ sipe --config /path/to/your_config.toml

To get an idea how the file should look like you can use the dumpconfig subcommand to export your existing configuration:

$ sipe --your-favourite-flags dumpconfig

Programatically interfacing Sipe nodes

As a developer, sooner rather than later you'll want to start interacting with Sipe and the Simplechain network via your own programs and not manually through the console. To aid this, Sipe has built-in support for a JSON-RPC based APIs (standard APIs and Sipe specific APIs). These can be exposed via HTTP, WebSockets and IPC (unix sockets on unix based platforms, and named pipes on Windows).

The IPC interface is enabled by default and exposes all the APIs supported by Sipe, whereas the HTTP and WS interfaces need to manually be enabled and only expose a subset of APIs due to security reasons. These can be turned on/off and configured as you'd expect.

HTTP based JSON-RPC API options:

  • --rpc Enable the HTTP-RPC server
  • --rpcaddr HTTP-RPC server listening interface (default: "localhost")
  • --rpcport HTTP-RPC server listening port (default: 8545)
  • --rpcapi API's offered over the HTTP-RPC interface (default: "eth,net,web3")
  • --rpccorsdomain Comma separated list of domains from which to accept cross origin requests (browser enforced)
  • --ws Enable the WS-RPC server
  • --wsaddr WS-RPC server listening interface (default: "localhost")
  • --wsport WS-RPC server listening port (default: 8546)
  • --wsapi API's offered over the WS-RPC interface (default: "eth,net,web3")
  • --wsorigins Origins from which to accept websockets requests
  • --ipcdisable Disable the IPC-RPC server
  • --ipcapi API's offered over the IPC-RPC interface (default: "admin,debug,eth,miner,net,personal,shh,txpool,web3")
  • --ipcpath Filename for IPC socket/pipe within the datadir (explicit paths escape it)

You'll need to use your own programming environments' capabilities (libraries, tools, etc) to connect via HTTP, WS or IPC to a Sipe node configured with the above flags and you'll need to speak JSON-RPC on all transports. You can reuse the same connection for multiple requests!

Note: Please understand the security implications of opening up an HTTP/WS based transport before doing so! Hackers on the internet are actively trying to subvert Simplechain nodes with exposed APIs! Further, all browser tabs can access locally running webservers, so malicious webpages could try to subvert locally available APIs!

Contribution

Thank you for considering to help out with the source code! We welcome contributions from anyone on the internet, and are grateful for even the smallest of fixes!

If you'd like to contribute to go-simplechain, please fork, fix, commit and send a pull request for the maintainers to review and merge into the main code base. to ensure those changes are in line with the general philosophy of the project and/or get some early feedback which can make both your efforts much lighter as well as our review and merge procedures quick and simple.

Please make sure your contributions adhere to our coding guidelines:

  • Code must adhere to the official Go formatting guidelines (i.e. uses gofmt).
  • Code must be documented adhering to the official Go commentary guidelines.
  • Pull requests need to be based on and opened against the master branch.
  • Commit messages should be prefixed with the package(s) they modify.
    • E.g. "eth, rpc: make trace configs optional"

Please see the Developers' Guide for more details on configuring your environment, managing project dependencies and testing procedures.

License

The go-simplechain library (i.e. all code outside of the cmd directory) is licensed under the GNU Lesser General Public License v3.0, also included in our repository in the COPYING.LESSER file.

The go-simplechain binaries (i.e. all code inside of the cmd directory) is licensed under the GNU General Public License v3.0, also included in our repository in the COPYING file.

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Official golang implementation of the Simplechain protocol 展开 收起
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