katoikia-app/web-ui/web-react/node_modules/sockjs/examples/echo/README.md

SockJS-node Echo example

To run this example, first install dependencies:

npm install

And run a server:

node server.js

That will spawn an http server at http://127.0.0.1:9999/ which will serve both html (served from the current directory) and also SockJS server (under the /echo path).