middleware

var RealIP = middleware.RealIP

RealIP is a middleware that sets a http.Request's RemoteAddr to the results of parsing either the True-Client-IP, X-Real-IP or the X-Forwarded-For headers (in that order).

This middleware should be inserted fairly early in the middleware stack to ensure that subsequent layers (e.g., request loggers) which examine the RemoteAddr will see the intended value.

You should only use this middleware if you can trust the headers passed to you (in particular, the three headers this middleware uses), for example because you have placed a reverse proxy like HAProxy or nginx in front of chi. If your reverse proxies are configured to pass along arbitrary header values from the client, or if you use this middleware without a reverse proxy, malicious clients will be able to make you very sad (or, depending on how you're using RemoteAddr, vulnerable to an attack of some sort).

var Recoverer = middleware.Recoverer

Recoverer is a middleware that recovers from panics, logs the panic (and a backtrace), and returns a HTTP 500 (Internal Server Error) status if possible. Recoverer prints a request ID if one is provided.

Alternatively, look at https://github.com/go-chi/httplog middleware pkgs.

var RequestID = middleware.RequestID

RequestID is a middleware that injects a request ID into the context of each request. A request ID is a string of the form "host.example.com/random-0001", where "random" is a base62 random string that uniquely identifies this go process, and where the last number is an atomically incremented request counter.

var ThrottleBacklog = middleware.ThrottleBacklog

ThrottleBacklog is a middleware that limits number of currently processed requests at a time and provides a backlog for holding a finite number of pending requests.