toyrpc

Toychain JSON-RPC

Toyrpc lets you interact with all Toychain APIs via HTTP or TCP, using the JSON-RPC 2.0 spec (https://www.jsonrpc.org/specification).

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Why

1. Programming Language Agnostic: No need to use JavaScript to program Toychain, you can simply set up a Toyrpc daemon and interact with it over JSON-RPC to clone, add, push, read, etc. --- everything you can do with Toychain.
2. Container-friendly: Toyrpc and its Toychain can be containerized

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Intall

You need to install both toychain AND toyrpc, because Toyrpc endpoints are instantiated from an existing Toychain object.

npm install --save toychain
npm install --save toyrpc

Setting up the server

Build or find a toychain, and then instantiate a Toyrpc from the toychain.

const Toychain = require('toychain')
const Toyrpc = require('toyrpc')

// Build a toychain
const toychain = new Toychain({ xpriv: <xpriv> })

// Instantiate RPC for the toychain
const rpc = new Toyrpc({
  chain: toychain,
  readonly: true,
  port: 3000,
  protocol: "http"
})

// Listen
rpc.listen()

Here's the full syntax for the constructor:

const rpc = new Toyrpc({
  chain: <toychain object>,
  readonly: <true|false (default false)>,
  port: <the port to serve rpc from>,
  protocol: <"http"|"tcp">
})

• chain: you need to inject an existing toychain object to build an RPC endpoint
• readonly: if set to true, you can make this RPC endpoint only readonly. All "write" actions (clone, add, push, and reset) are blocked. When readonly mode, the only allowed functions are count and get.
• port: The port to serve RPC from
• protocol: Choose to serve over HTTP or TCP. The default is HTTP.

Once initialized, you can listen:

rpc.listen()

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API Usage

Once the endpoint is up and running, you can make JSON-RPC 2.0 compliant requests over HTTP or TCP.

Here's an example:

POST http://localhost:3012

{
  "jsonrpc": "2.0",
  "method": "add",
  "params": {
    "v": 1,
    "out": [{
      "o0": "OP_0", "o1": "OP_RETURN", "s2": "hello toy"
    }],
    "edge": { "in": 1, "out": 2 }
  },
  "id": 0
}

The curreently available RPC endpoints are:

• clone: (write method) calls the clone method https://toychain.network/#/?id=_2-clone
• add: (write method) calls the add method https://toychain.network/#/?id=_3-add
• push: (write method) calls the push method https://toychain.network/#/?id=_4-push
• reset: (write method) calls the reset method https://toychain.network/#/?id=_6-reset
• get: (read method) calls the get method https://toychain.network/#/?id=_7-get
• count: (read method) calls the count method https://toychain.network/#/?id=_5-count

See JSON-RPC 2.0 Spec for more details on the JSON-RPC syntax: https://www.jsonrpc.org/specification

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Demo

You can try the demo under demo/http.

1. The server.js starts a JSON-RPC server.
2. The client.js lets you call various available JSON-RPC methods via HTTP

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