auth

type JWTMiddleware struct {
	Options JWTOptions
}

type JWTOptions struct {
	ValidationKeyGetter jwt.Keyfunc
	// Whether the lack of credentials should throw an error
	CredentialsOptional bool
	// Function to be called when there's an error validating the token
	ErrorHandler errorHandler
	// A function to extract the token from the request
	Extractor TokenExtractor
	// When set, all requests with the OPTIONS method will use authentication
	EnableAuthOnOptions bool
	// When set, the middelware verifies that tokens are signed with the specific signing algorithm
	// If the signing method is not constant the ValidationKeyGetter callback can be used to implement additional checks
	// Important to avoid security issues described here: https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
	SigningMethod jwt.SigningMethod
}

type TokenExtractor func(r *http.Request) (string, error)