Req
Express v4 requires extra middle ware to handle POST requests
app.use(bodyParser.json());
Express in 4.16 again has express.json()
app.use(express.json({ limit: "1GB" })); //default limit 100kb
Access
req.query //query parameters
req.body //post body
req.params //url variables like /user/:userid
Advanced
Get Ip Address
const ip =
req.headers["x-forwarded-for"] ||
req.connection.remoteAddress ||
req.socket.remoteAddress ||
(req.connection.socket ? req.connection.socket.remoteAddress : null);
Headers
req.headers
See forms for how to do multipart forms for binary/form data
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