BasicAuthentication is a middleware that authenticates via basic auth, if enabled allowed is a list of user:bcrypt(passwd) strings generated by `htpasswd -nbB user passwd`.

ContentTypeJSON sets Content-Type (HTTP header) to `application/json`.

DevCORS allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served.

NewStructuredLogger creates a middleware with logrus logger.

ServeFile handles requests for a specific file..

SinglePageApplication renders and serves the index.html.

StructuredLogger is a simple, but powerful implementation of a custom structured logger backed on logrus.