Checkout this blog for http2 support in lb4 app: https://blog.shubhamp.dev/how-to-use-http2-in-loopback-4-applications Related Thread: loopbackio/loopback-next#9067

http/2 proxy for loopback

Proxy code for forwarding HTTP2 requests to loopback, in two ways:

1. Internal node:http2
2. Fastify's http2 server

Check Out the Request Flow

Request Flow

Directory Structure

.
├── loopback-http2-proxy/ (• this repository)
│   └── src
│       ├── native-http2.ts
|           └── H2 Server having requests forwarded to lb4 app using node's internal http2.
│       └── fastify-http2.ts
|           └── H2 Server having requests forwarded to lb4 app using fastify.
└── default-app/ (loopback app to forward requests to)
    └── (...normal loopback app)

Changes required in Loopback App

TODO

Current Supoprt

• GET routes with returned responses
• GET routes with responses send() directly to http by loopback.
• Translated http/1 Headers
• Cookies
• Status Codes
• Static Responses (to support this.static('/', "index.html"))
• Streamed Responses (Readable streams)
• ...(more to come)

What has been tested?

An lb4 app sourced here is being used to test different routes and responses.

• REST Controller with CRUD functions (Datasource: Postgres) source

  • @post('/users')
  • @get('/users')
  • @get('/users/count')
  • @patch('/users')
  • @get('/users/{id}')
  • @patch('/users/{id}')
  • @put('/users/{id}')
  • @del('/users/{id}')

• Default Ping Controller