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BDLS protocol based PoS Blockchain

Most functionalities of this client is similar to the Ethereum golang implementation. If you do not find your question answered by the documentation, try searching the geth wiki.

Building the source

Download the source as

git clone https://github.com/BDLS-bft/BDLSChain.git
cd BDLSChain/cmd/geth
go build .

Building geth 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 geth

or, to build the full suite of utilities:

make all

Run the testnet as:

./geth --testnet --rpc console
OR
./geth --testnet --verbosity 5 --rpc console

eth.blockNumber
eth.getBlock(xxxx)

Exercise the following commands:

./geth account new
./geth --testnet account new
./geth --testnet --unlock 16Fc08d853febedC8A15FC437D9760540f6F36b8  stake delegate --stake.account 16Fc08d853febedC8A15FC437D9760540f6F36b8 --stake.from 40000 --stake.to 50000
./geth --testnet --mine -unlock 0x16Fc08d853febedC8A15FC437D9760540f6F36b8 console


./geth --testnet --mine --unlock 0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA console

eth.sendTransaction({from:"0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA",to: "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee", value: "1888888888888888888888", data:"0xe880824e20829c40a0110bc382740be7bf0e60f65c843ffda6b9daf4034ad7cb85f887e7698340020d"})

./geth --testnet --unlock  F94cE232Aaa69A8285B5b93a68adb019B17Bc5BA  stake delegate --stake.account  F94cE232Aaa69A8285B5b93a68adb019B17Bc5BA --stake.from 40000 --stake.to 60000

eth.sendTransaction({from: "0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA",to: "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee", value: "1888888888888888888888", data:"0xe880829c4082ea60a0939d6e7e39bd320ff535e9cb29b9c4afe415d1de8134aa4812958e00e1af40ac"})


 ./geth --testnet --mine --unlock 0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA console 

eth.getBalance("0x16Fc08d853febedC8A15FC437D9760540f6F36b8")

eth.getBalance("0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA")


./geth --testnet stake redeem

eth.sendTransaction({from:"0xF94cE232Aaa69A8285B5b93a68adb019B17Bc5BA",to: "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee", value: "0", data:"0xe581ff8080a00000000000000000000000000000000000000000000000000000000000000000"})

Executables

The BDLS based blockchain client comes with several wrappers/executables found in the cmd directory.

Command Description
geth Our main blockchain client. It is the entry point into the network (test- for now and main- later), capable of running as a full node (default), archive node (retaining all historical state) or a light node (retrieving data live). It can be used by other processes as a gateway into the network via JSON RPC endpoints exposed on top of HTTP, WebSocket and/or IPC transports. geth --help for command line options.
abigen Source code generator to convert contract definitions into easy to use, compile-time type-safe Go packages. It operates on plain Ethereum contract ABIs with expanded functionality if the contract bytecode is also available. However, it also accepts Solidity source files, making development much more streamlined. Please see Ethereum Native DApps wiki page for details.
bootnode Stripped down version of our client implementation that only takes part in the network node discovery protocol, but does not run any of the higher level application protocols. It can be used as a lightweight bootstrap node to aid in finding peers in private networks.
evm Developer utility version of the EVM (Ethereum Virtual Machine) that is capable of running bytecode snippets within a configurable environment and execution mode. Its purpose is to allow isolated, fine-grained debugging of SVM opcodes (e.g. evm --code 60ff60ff --debug run).
gethrpctest Developer utility tool to support our ethereum/rpc-test test suite which validates baseline conformity to the Ethereum JSON RPC specs. Please see the Ethereum test suite's readme for details.
rlpdump Developer utility tool to convert binary RLP (Recursive Length Prefix) dumps (data encoding used by the protocol both network as well as consensus wise) to user-friendlier hierarchical representation (e.g. rlpdump --hex CE0183FFFFFFC4C304050583616263).
puppeth a CLI wizard that aids in creating a new network.

Running the Blockchain

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 client instance.

Configuration

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

$ geth --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:

$ geth --your-favourite-flags dumpconfig

Programmatically interfacing geth nodes

As a developer, sooner rather than later you'll want to start interacting with geth and the blockchain network via your own programs and not manually through the console. To aid this, geth has built-in support for a JSON-RPC based APIs (standard APIs and geth 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 geth, 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 geth 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 blockchain nodes with exposed APIs! Further, all browser tabs can access locally running web servers, so malicious web pages 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!

License

The go-ethereum 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-ethereum 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.