iamrafaelmelo / simple-slim-sse

A simple SSE implementation based on Slim Framework.

Simple Slim SSE

This repository contains a basic implementation of SSE (Server-Side Events) using Slim Framework for stusies purposes. Feel free to clone and modify, enjoy!

This implementation is limited to up to 6 connections per browser/domain, because isn't use HTTP/2 (see more in notes).

Requirements

• PHP >= 8.2
• Composer
• Docker
• Make (optional)

Get started

With docker

docker compose up || docker-compose up

With make

make up

And access http://127.0.0.1:80 on your browser.

Accessing docker container

docker exec -it server-side-events-app sh
# or
make container

Notes

• NGINX was used due to the connection limit of PHP's built-in server (where only 1 connection is supported at a time)
• Does not support binary data like Websocket
• It is unidirectional (depending on the type of application this may not be a problem)
• SSE has a limit of six open connections per browser when HTTP/2 is not used, reaching up to 100
• The connection limit is per browser and domain