Node Pebble

A Node.js wrapper for Let’s Encrypt’s Pebble (“a small RFC 8555 ACME test server not suited for a production certificate authority”).

• Downloads the correct Pebble binary for your platform.

• Launches and manages a single Pebble process.

• Returns a reference to the same process on future calls (safe to include in multiple unit tests where order of tests is undetermined)

• Automatically patches Node.js’s TLS module to accept Pebble server’s test certificate as well as its dynamically-generated root and intermediary CA certificates.

Version and platform support

Supports Pebble version 2.3.1 under Node.js LTS on platforms with binary Pebble releases:

• Linux AMD 64.
• Windows AMD 64.

Installation

npm i @small-tech/node-pebble

As part of the post-installation process, Node Pebble will download the correct Pebble binary for your platform for use at runtime.

Node Pebble has zero runtime dependencies.

API

Pebble.ready ([args], [env]) -> Promise<ChildProcess>

Promises to get the Pebble server ready for use. Resolves once Pebble server is launched and ready and Node.js’s TLS module has been patched to accept Pebble server’s test certificate as well as its dynamically-generated root and intermediary CA certificates.

Note that while this method returns a reference to the Pebble child process, in normal use you should not have to care about the return value.

Example

await Pebble.ready()

Parameters

• args: Optional array or space-delimited string of arguments to pass to the Pebble binary. By default, no arguments are passed.

• env: Optional object with additional environment variables to set for the Pebble process.

  For frequently run unit tests, pass the following environment variables for fastest test run time. You may want to include less frequently-run test tasks without these settings for a more robust test harness.

  • PEBBLE_VA_NOSLEEP=1
  • PEBBLE_WFE_NONCEREJECT=0

  You can also customise the default environment variables by simply passing them to the outer process that runs Node Pebble (for example, when specifying npm test tasks).

Pebble.shutdown () -> Promise

Promises to shut down the Pebble server. Resolves once server is closed.

Example

await Pebble.shutdown()

Default configuration

The default configuration file is at bin/test/config/pebble-config.json:

{
  "pebble": {
    "listenAddress": "0.0.0.0:14000",
    "managementListenAddress": "0.0.0.0:15000",
    "certificate": "test/certs/localhost/cert.pem",
    "privateKey": "test/certs/localhost/key.pem",
    "httpPort": 80,
    "tlsPort": 443,
    "ocspResponderURL": "http://localhost:8888",
    "externalAccountBindingRequired": false
  }
}

To customise the configuration, specify your own configuration file by passing the -config argument to the Pebble binary. e.g.,

Pebble.ready('-config customConfig.json')

Basic example

The following listing launches the Pebble server with its default settings and then shuts it down.

import Pebble from '@small-tech/node-pebble'

console.log('\n⏳ Launching Pebble server…\n')

await Pebble.ready()

console.log('✔ Pebble server launched and ready.')
console.log('✔ Node.js’s TLS module patched to accept Pebble’s CA certificates.')

// Do stuff that requires Pebble here.
// …

console.log('\n⏳ Shutting down Pebble server…\n')

await Pebble.shutdown()

console.log('✔ Pebble server shut down.\n')

Install development dependencies (for tests and coverage)

npm install

Run test task

npm -s test

Run coverage task

npm -s run coverage

Like this? Fund us!

Small Technology Foundation is a tiny, independent not-for-profit.

We exist in part thanks to patronage by people like you. If you share our vision and want to support our work, please become a patron or donate to us today and help us continue to exist.

Copyright

© 2020-2021 Aral Balkan, Small Technology Foundation.

Let’s Encrypt is a trademark of the Internet Security Research Group (ISRG). All rights reserved. Node.js is a trademark of Joyent, Inc. and is used with its permission. We are not endorsed by or affiliated with Joyent or ISRG.

License

AGPL version 3.0 or later.