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node-komodo-rpc

nodejs json-rpc for Komodo and Smart Chains, with Promises and support for multiple instances

  • Supports on-the-fly RPC methods using Proxies; all the RPC methods supported by a daemon (including the Antara API) are available
  • Supports multiple instances (different daemons) in the same application
  • Works only in Nodejs; for the browser version, click here
  • Very small codebase
  • Uses axios behind the scenes

Instructions

  1. require() the module; it imports a class
  2. launch a new instance of the class with a config object as the argument; the config object can contain the credentials directly or one of the following other ways to access them
    • datadir Ex: { datadir: "/home/username/.komodo/LABS" }
    • name Ex: { name: "Rick" }
    • conffile Ex: { conffile: "/home/username/.komodo/MORTY/MORTY.conf" }
  3. call .config with the new instance object to access its config
  4. call .rpc() with the new instance object to access the RPC interface

Usage

Passing the credentials directly

const SmartChain = require("node-komodo-rpc");

const config = {
  rpchost: "localhost",
  rpcport: 7771,
  rpcuser: "user316977",
  rpcpassword: "pass47aac855ee750dab0128962d29e85920cbb8ad730d0e0307"
};

const komodo = new SmartChain({ config });

console.log(komodo.config); // Prints the config being used by the komodo instance

const komodoRPC = komodo.rpc();

komodoRPC
  .getinfo()
  .then(info => {
    console.log(info);
  })
  .catch(error => {
    console.log(error);
    throw new Error(error);
  });

komodoRPC
  .listunspent(6, 9999999, [
    "RPS3xTZCzr6aQfoMw5Bu1rpQBF6iVCWsyu",
    "RBtNBJjWKVKPFG4To5Yce9TWWmc2AenzfZ"
  ])
  .then(outs => {
    console.log(outs);
  })
  .catch(error => console.log(error));

Passing the data directory's path

const rick = new SmartChain({
  datadir: "/home/username/.komodo/RICK"
});

Passing the Name

const labs = new SmartChain({
  name: "labs"
});

Passing the Conf file's path

const morty = new SmartChain({
  conffile: "/home/username/.komodo/MORTY/MORTY.conf"
});

When no argument is passed, it is equivalent to passing the argument {name: "komodo"}

const komodo = new SmartChain();

To print the config being used by the LABS instance

console.log(labs.config);

Output

{
  "NAME": "labs",
  "HOSTNAME": "localhost",
  "PORT": "40265",
  "USERNAME": "user45765873",
  "PASSWORD": "passa8eb6941a2e7f4059d9726126d8989428f54748b94cd775",
  "DATADIR": "/home/<username>/.komodo/LABS/",
  "CONFFILE": "/home/<username>/.komodo/LABS/LABS.conf"
}

Descriptions of the properties

  • NAME is the name of the Blockchain; more accurately, it is the name of the conf file
  • HOSTNAME the address at which the RPC server (blockchain daemon) is listening for connections
  • PORT is the port at which the RPC server (blockchain daemon) is listening for connections
  • USERNAME is the username allowed to send RPC requests to the blockchain daemon
  • PASSWORD is the password to authenticate the RPC requests to the blockchain daemon
  • DATADIR is the data directory being used by the blockchain daemon; more accurately, this is the directory containing the conf file
  • CONFFILE is the file containing the configuration settings of the blockchain daemon

Defaults

If the config object is missing the keys: rpchost or rpcport, the default values used are localhost and 7771 respectively. When the config object is passed, NAME, DATADIR and CONFFILE are set to be undefined

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nodejs json-rpc client for Komodo and Smart Chains, with Promises and support for multiple instances

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