STREAM Example

all.js

const IlpStream = require('ilp-protocol-stream')
const createPlugin = require('ilp-plugin')

// Note this requires a local moneyd instance to work
// See https://github.com/interledgerjs/moneyd for instructions

async function run () {
  const serverPlugin = createPlugin()
  const server = await IlpStream.createServer({
    plugin: serverPlugin
  })

  server.on('connection', (connection) => {
    console.log('server got connection')

    connection.on('stream', (stream) => {
      console.log(`server got a new stream: ${stream.id}`)

      // Set the maximum amount of money this stream can receive
      stream.setReceiveMax(10000)

      // Handle incoming money
      stream.on('money', (amount) => {
        console.log(`server stream ${stream.id} got incoming payment for: ${amount}`)
      })

      // Handle incoming data
      stream.on('data', (chunk) => {
        console.log(`server stream ${stream.id} got data: ${chunk.toString('utf8')}`)
      })
    })
  })

  // These would need to be passed from the server to the client using
  // some encrypted communication channel (not provided by STREAM)
  const { destinationAccount, sharedSecret } = server.generateAddressAndSecret()
  console.log(`server generated ILP address (${destinationAccount}) and shared secret (${sharedSecret.toString('hex')}) for client`)

  const clientPlugin = createPlugin()
  const clientConn = await IlpStream.createConnection({
    plugin: clientPlugin,
    destinationAccount,
    sharedSecret
  })

  // Streams are automatically given ids (client-initiated ones are odd, server-initiated are even)
  const streamA = clientConn.createStream()
  const streamB = clientConn.createStream()

  console.log(`sending data to server on stream ${streamA.id}`)
  streamA.write('hello there!')

  console.log(`sending data to server on stream ${streamB.id}`)
  streamB.write('hello there!')

  console.log(`sending money to server on stream ${streamA.id}`)
  await streamA.sendTotal(100)
  console.log('sent 100 units')

  console.log(`sending money to server on stream ${streamB.id}`)
  await streamB.sendTotal(200)
  console.log('sent 200 units')
}

run().catch((err) => console.log(err))