HTTP API interface for üWave.
Last updated 3 years ago by goto-bus-stop .
MIT · Repository · Bugs · Original npm · Tarball · package.json
$ cnpm install u-wave-http-api 
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HTTP API plugin for üWave, the collaborative listening platform.

Getting Started - API - Building - License

Note: üWave is still under development. Particularly the u-wave-core and u-wave-http-api modules will change a lot before the "official" 1.0.0 release. Make sure to always upgrade both of them at the same time.

Getting Started

npm install u-wave-http-api

The module exports a middleware that can be used with express-style HTTP request handlers.


import { createHttpApi, createSocketServer } from 'u-wave-http-api'
const { createHttpApi, createSocketServer } = require('u-wave-http-api')

api = createHttpApi(uwave, options={})

Creates a middleware for use with Express or another such library. The first parameter is a u-wave-core instance. Available options are:

  • secret - A string or Buffer containing a secret used to encrypt authentication tokens. It's important that this is the same as the secret option passed to the core library.
  • recaptcha - If you want to force ReCaptcha validation on new registrations, pass an object with ReCaptcha options. The only available option is secret, which is the ReCaptcha secret obtained from the "Server-side integration" panel on your ReCaptcha site admin page.
  • mailTransport - nodemailer SMTP options or a transport object, used to send password reset emails.
  • onError - Error handler function, use for recording errors. First parameter is the request object that caused the error, second is the error itself.


import express from 'express';
import stubTransport from 'nodemailer-stub-transport';
import uwave from 'u-wave-core';
import { createHttpApi } from 'u-wave-http-api';

const app = express();

const secret = fs.readFileSync('./secret.dat');

const uw = uwave({
  secret: secret,
const api = createHttpApi(uw, {
  secret: secret, // Encryption secret
  recaptcha: { secret: 'AABBCC...' }, // Optional
  mailTransport: stubTransport(), // Optional
  onError: (req, error) => {}, // Optional

app.use('/v1', api);


Returns a middleware that attaches the üWave core object and the üWave http-api object to the request. The u-wave-core instance will be available as req.uwave, and the u-wave-http-api instance will be available as req.uwaveHttp. This is useful if you want to access these objects in custom routes, that are not in the u-wave-http-api namespace. E.g.:


app.use('/api', api);

// A custom profile page.
app.get('/profile/:user', api.attachUwaveToRequest(), (req, res) => {
  const uwave = req.uwave;
  uwave.getUser(req.params.user).then((user) => {
    res.send(`<h1>Profile of user ${user.username}!</h1>`);

sockets = createSocketServer(uwave, options={})

Create the WebSocket server used for realtime communication, like advance notifications and chat messages.

  • server - An HTTP server instance. u-wave-http-api uses WebSockets, and it needs an HTTP server to listen to for incoming WebSocket connections. An example for how to obtain this server from an Express app is shown below.
  • port - The WebSocket server can also listen on its own port instead of attaching to the HTTP server. In that case, specify the port number here.
  • secret - A string or Buffer containing a secret used to encrypt authentication tokens. It's important that this is the same as the secret option passed to the core library and the createHttpApi function.


import express from 'express';
import { createSocketServer } from 'u-wave-http-api';

const app = express();
const server = app.listen(8080);

const secret = fs.readFileSync('./secret.dat');

const sockets = createSocketServer(uw, {
  server, // The HTTP server
  secret: secret, // Encryption secret
const sockets = createSocketServer(uw, {
  port: 6042, // Port to listen on—make sure to configure web clients for this
  secret: secret, // Encryption secret


There is a development server included in this repository. To use it, first you have to clone and install u-wave-core.

git clone https://github.com/u-wave/core u-wave-core
cd u-wave-core
npm install
npm link

Then you can clone and install the HTTP API:

git clone https://github.com/u-wave/http-api u-wave-http-api
cd u-wave-http-api
npm install
# Add our local u-wave-core
npm link u-wave-core
# & run the server!
npm start -- --port 6042


The build step compiles the futuristic JavaScript that's used in this repository to code that can be used in engines today, using Babel. To compile the code, run:

npm run build

When developing, it might be useful to recompile automatically on changes instead, using:

npm run watch



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