Ability to skip a middleware via callback

Signed-off-by: Vishal Rana <vr@labstack.com>

middleware/basic_auth.go

@@ -7,13 +7,16 @@ import (
 )
 
 type (
-	// BasicAuthConfig defines the config for HTTP basic auth middleware.
+	// BasicAuthConfig defines the config for BasicAuth middleware.
 	BasicAuthConfig struct {
-		// Validator is a function to validate basic auth credentials.
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
+		// Validator is a function to validate BasicAuth credentials.
 		Validator BasicAuthValidator
 	}
 
-	// BasicAuthValidator defines a function to validate basic auth credentials.
+	// BasicAuthValidator defines a function to validate BasicAuth credentials.
 	BasicAuthValidator func(string, string) bool
 )
 
@@ -21,20 +24,38 @@ const (
 	basic = "Basic"
 )
 
-// BasicAuth returns an HTTP basic auth middleware.
+var (
+	// DefaultBasicAuthConfig is the default BasicAuth middleware config.
+	DefaultBasicAuthConfig = BasicAuthConfig{
+		Skipper: defaultSkipper,
+	}
+)
+
+// BasicAuth returns an BasicAuth middleware.
 //
 // For valid credentials it calls the next handler.
 // For invalid credentials, it sends "401 - Unauthorized" response.
 // For empty or invalid `Authorization` header, it sends "400 - Bad Request" response.
 func BasicAuth(fn BasicAuthValidator) echo.MiddlewareFunc {
-	return BasicAuthWithConfig(BasicAuthConfig{fn})
+	c := DefaultBasicAuthConfig
+	c.Validator = fn
+	return BasicAuthWithConfig(c)
 }
 
-// BasicAuthWithConfig returns an HTTP basic auth middleware from config.
+// BasicAuthWithConfig returns an BasicAuth middleware from config.
 // See `BasicAuth()`.
 func BasicAuthWithConfig(config BasicAuthConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultBasicAuthConfig.Skipper
+	}
+
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			auth := c.Request().Header().Get(echo.HeaderAuthorization)
 			l := len(basic)
 

middleware/body_limit.go

@@ -10,8 +10,11 @@ import (
 )
 
 type (
-	// BodyLimitConfig defines the config for body limit middleware.
+	// BodyLimitConfig defines the config for BodyLimit middleware.
 	BodyLimitConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Maximum allowed size for a request body, it can be specified
 		// as `4x` or `4xB`, where x is one of the multiple from K, M, G, T or P.
 		Limit string `json:"limit"`
@@ -26,21 +29,35 @@ type (
 	}
 )
 
-// BodyLimit returns a body limit middleware.
+var (
+	// DefaultBodyLimitConfig is the default Gzip middleware config.
+	DefaultBodyLimitConfig = BodyLimitConfig{
+		Skipper: defaultSkipper,
+	}
+)
+
+// BodyLimit returns a BodyLimit middleware.
 //
 // BodyLimit middleware sets the maximum allowed size for a request body, if the
 // size exceeds the configured limit, it sends "413 - Request Entity Too Large"
-// response. The body limit is determined based on both `Content-Length` request
+// response. The BodyLimit is determined based on both `Content-Length` request
 // header and actual content read, which makes it super secure.
 // Limit can be specified as `4x` or `4xB`, where x is one of the multiple from K, M,
 // G, T or P.
 func BodyLimit(limit string) echo.MiddlewareFunc {
-	return BodyLimitWithConfig(BodyLimitConfig{Limit: limit})
+	c := DefaultBodyLimitConfig
+	c.Limit = limit
+	return BodyLimitWithConfig(c)
 }
 
-// BodyLimitWithConfig returns a body limit middleware from config.
+// BodyLimitWithConfig returns a BodyLimit middleware from config.
 // See: `BodyLimit()`.
 func BodyLimitWithConfig(config BodyLimitConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultBodyLimitConfig.Skipper
+	}
+
 	limit, err := bytes.Parse(config.Limit)
 	if err != nil {
 		panic(fmt.Errorf("invalid body-limit=%s", config.Limit))
@@ -50,6 +67,10 @@ func BodyLimitWithConfig(config BodyLimitConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 
 			// Based on content length

middleware/compress.go

@@ -13,8 +13,11 @@ import (
 )
 
 type (
-	// GzipConfig defines the config for gzip middleware.
+	// GzipConfig defines the config for Gzip middleware.
 	GzipConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Gzip compression level.
 		// Optional. Default value -1.
 		Level int `json:"level"`
@@ -27,9 +30,10 @@ type (
 )
 
 var (
-	// DefaultGzipConfig is the default gzip middleware config.
+	// DefaultGzipConfig is the default Gzip middleware config.
 	DefaultGzipConfig = GzipConfig{
-		Level: -1,
+		Skipper: defaultSkipper,
+		Level:   -1,
 	}
 )
 
@@ -39,10 +43,13 @@ func Gzip() echo.MiddlewareFunc {
 	return GzipWithConfig(DefaultGzipConfig)
 }
 
-// GzipWithConfig return gzip middleware from config.
+// GzipWithConfig return Gzip middleware from config.
 // See: `Gzip()`.
 func GzipWithConfig(config GzipConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultGzipConfig.Skipper
+	}
 	if config.Level == 0 {
 		config.Level = DefaultGzipConfig.Level
 	}
@@ -52,6 +59,10 @@ func GzipWithConfig(config GzipConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			res := c.Response()
 			res.Header().Add(echo.HeaderVary, echo.HeaderAcceptEncoding)
 			if strings.Contains(c.Request().Header().Get(echo.HeaderAcceptEncoding), scheme) {

middleware/cors.go

@@ -11,6 +11,9 @@ import (
 type (
 	// CORSConfig defines the config for CORS middleware.
 	CORSConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// AllowOrigin defines a list of origins that may access the resource.
 		// Optional. Default value []string{"*"}.
 		AllowOrigins []string `json:"allow_origins"`
@@ -47,6 +50,7 @@ type (
 var (
 	// DefaultCORSConfig is the default CORS middleware config.
 	DefaultCORSConfig = CORSConfig{
+		Skipper:      defaultSkipper,
 		AllowOrigins: []string{"*"},
 		AllowMethods: []string{echo.GET, echo.HEAD, echo.PUT, echo.PATCH, echo.POST, echo.DELETE},
 	}
@@ -62,6 +66,9 @@ func CORS() echo.MiddlewareFunc {
 // See: `CORS()`.
 func CORSWithConfig(config CORSConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultCORSConfig.Skipper
+	}
 	if len(config.AllowOrigins) == 0 {
 		config.AllowOrigins = DefaultCORSConfig.AllowOrigins
 	}
@@ -75,6 +82,10 @@ func CORSWithConfig(config CORSConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			res := c.Response()
 			origin := req.Header().Get(echo.HeaderOrigin)

middleware/csrf.go

@@ -14,6 +14,9 @@ import (
 type (
 	// CSRFConfig defines the config for CSRF middleware.
 	CSRFConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// TokenLength is the length of the generated token.
 		TokenLength uint8 `json:"token_length"`
 		// Optional. Default value 32.
@@ -64,6 +67,7 @@ type (
 var (
 	// DefaultCSRFConfig is the default CSRF middleware config.
 	DefaultCSRFConfig = CSRFConfig{
+		Skipper:      defaultSkipper,
 		TokenLength:  32,
 		TokenLookup:  "header:" + echo.HeaderXCSRFToken,
 		ContextKey:   "csrf",
@@ -83,6 +87,9 @@ func CSRF() echo.MiddlewareFunc {
 // See `CSRF()`.
 func CSRFWithConfig(config CSRFConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultCSRFConfig.Skipper
+	}
 	if config.TokenLength == 0 {
 		config.TokenLength = DefaultCSRFConfig.TokenLength
 	}
@@ -111,6 +118,10 @@ func CSRFWithConfig(config CSRFConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			k, err := c.Cookie(config.CookieName)
 			token := ""

middleware/jwt.go

@@ -11,8 +11,11 @@ import (
 )
 
 type (
-	// JWTConfig defines the config for JWT auth middleware.
+	// JWTConfig defines the config for JWT middleware.
 	JWTConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Signing key to validate token.
 		// Required.
 		SigningKey []byte `json:"signing_key"`
@@ -49,6 +52,7 @@ const (
 var (
 	// DefaultJWTConfig is the default JWT auth middleware config.
 	DefaultJWTConfig = JWTConfig{
+		Skipper:       defaultSkipper,
 		SigningMethod: AlgorithmHS256,
 		ContextKey:    "user",
 		TokenLookup:   "header:" + echo.HeaderAuthorization,
@@ -72,6 +76,9 @@ func JWT(key []byte) echo.MiddlewareFunc {
 // See: `JWT()`.
 func JWTWithConfig(config JWTConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultJWTConfig.Skipper
+	}
 	if config.SigningKey == nil {
 		panic("jwt middleware requires signing key")
 	}
@@ -95,6 +102,10 @@ func JWTWithConfig(config JWTConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			auth, err := extractor(c)
 			if err != nil {
 				return echo.NewHTTPError(http.StatusBadRequest, err.Error())

middleware/logger.go

@@ -16,8 +16,11 @@ import (
 )
 
 type (
-	// LoggerConfig defines the config for logger middleware.
+	// LoggerConfig defines the config for Logger middleware.
 	LoggerConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Log format which can be constructed using the following tags:
 		//
 		// - time_rfc3339
@@ -32,8 +35,8 @@ type (
 		// - status
 		// - latency (In microseconds)
 		// - latency_human (Human readable)
-		// - rx_bytes (Bytes received)
-		// - tx_bytes (Bytes sent)
+		// - bytes_in (Bytes received)
+		// - bytes_out (Bytes sent)
 		//
 		// Example "${remote_ip} ${status}"
 		//
@@ -51,14 +54,15 @@ type (
 )
 
 var (
-	// DefaultLoggerConfig is the default logger middleware config.
+	// DefaultLoggerConfig is the default Logger middleware config.
 	DefaultLoggerConfig = LoggerConfig{
+		Skipper: defaultSkipper,
 		Format: `{"time":"${time_rfc3339}","remote_ip":"${remote_ip}",` +
 			`"method":"${method}","uri":"${uri}","status":${status}, "latency":${latency},` +
-			`"latency_human":"${latency_human}","rx_bytes":${rx_bytes},` +
-			`"tx_bytes":${tx_bytes}}` + "\n",
-		color:  color.New(),
+			`"latency_human":"${latency_human}","bytes_in":${bytes_in},` +
+			`"bytes_out":${bytes_out}}` + "\n",
 		Output: os.Stdout,
+		color:  color.New(),
 	}
 )
 
@@ -67,10 +71,13 @@ func Logger() echo.MiddlewareFunc {
 	return LoggerWithConfig(DefaultLoggerConfig)
 }
 
-// LoggerWithConfig returns a logger middleware from config.
+// LoggerWithConfig returns a Logger middleware from config.
 // See: `Logger()`.
 func LoggerWithConfig(config LoggerConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultLoggerConfig.Skipper
+	}
 	if config.Format == "" {
 		config.Format = DefaultLoggerConfig.Format
 	}
@@ -91,6 +98,10 @@ func LoggerWithConfig(config LoggerConfig) echo.MiddlewareFunc {
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) (err error) {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			res := c.Response()
 			start := time.Now()
@@ -149,13 +160,13 @@ func LoggerWithConfig(config LoggerConfig) echo.MiddlewareFunc {
 					return w.Write([]byte(strconv.FormatInt(l, 10)))
 				case "latency_human":
 					return w.Write([]byte(stop.Sub(start).String()))
-				case "rx_bytes":
+				case "bytes_in":
 					b := req.Header().Get(echo.HeaderContentLength)
 					if b == "" {
 						b = "0"
 					}
 					return w.Write([]byte(b))
-				case "tx_bytes":
+				case "bytes_out":
 					return w.Write([]byte(strconv.FormatInt(res.Size(), 10)))
 				}
 				return 0, nil

middleware/method_override.go

@@ -1,12 +1,13 @@
 package middleware
 
-import (
-	"github.com/labstack/echo"
-)
+import "github.com/labstack/echo"
 
 type (
-	// MethodOverrideConfig defines the config for method override middleware.
+	// MethodOverrideConfig defines the config for MethodOverride middleware.
 	MethodOverrideConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Getter is a function that gets overridden method from the request.
 		// Optional. Default values MethodFromHeader(echo.HeaderXHTTPMethodOverride).
 		Getter MethodOverrideGetter
@@ -17,13 +18,14 @@ type (
 )
 
 var (
-	// DefaultMethodOverrideConfig is the default method override middleware config.
+	// DefaultMethodOverrideConfig is the default MethodOverride middleware config.
 	DefaultMethodOverrideConfig = MethodOverrideConfig{
-		Getter: MethodFromHeader(echo.HeaderXHTTPMethodOverride),
+		Skipper: defaultSkipper,
+		Getter:  MethodFromHeader(echo.HeaderXHTTPMethodOverride),
 	}
 )
 
-// MethodOverride returns a method override middleware.
+// MethodOverride returns a MethodOverride middleware.
 // MethodOverride  middleware checks for the overridden method from the request and
 // uses it instead of the original method.
 //
@@ -32,16 +34,23 @@ func MethodOverride() echo.MiddlewareFunc {
 	return MethodOverrideWithConfig(DefaultMethodOverrideConfig)
 }
 
-// MethodOverrideWithConfig returns a method override middleware from config.
+// MethodOverrideWithConfig returns a MethodOverride middleware from config.
 // See: `MethodOverride()`.
 func MethodOverrideWithConfig(config MethodOverrideConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultMethodOverrideConfig.Skipper
+	}
 	if config.Getter == nil {
 		config.Getter = DefaultMethodOverrideConfig.Getter
 	}
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			if req.Method() == echo.POST {
 				m := config.Getter(c)

middleware/middleware.go

@@ -0,0 +1,14 @@
+package middleware
+
+import "github.com/labstack/echo"
+
+type (
+	// Skipper defines a function to skip middleware. Returning true skips processing
+	// the middleware.
+	Skipper func(c echo.Context) bool
+)
+
+// defaultSkipper returns false which processes the middleware.
+func defaultSkipper(c echo.Context) bool {
+	return false
+}

middleware/recover.go

@@ -9,8 +9,11 @@ import (
 )
 
 type (
-	// RecoverConfig defines the config for recover middleware.
+	// RecoverConfig defines the config for Recover middleware.
 	RecoverConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Size of the stack to be printed.
 		// Optional. Default value 4KB.
 		StackSize int `json:"stack_size"`
@@ -27,8 +30,9 @@ type (
 )
 
 var (
-	// DefaultRecoverConfig is the default recover middleware config.
+	// DefaultRecoverConfig is the default Recover middleware config.
 	DefaultRecoverConfig = RecoverConfig{
+		Skipper:           defaultSkipper,
 		StackSize:         4 << 10, // 4 KB
 		DisableStackAll:   false,
 		DisablePrintStack: false,
@@ -41,16 +45,23 @@ func Recover() echo.MiddlewareFunc {
 	return RecoverWithConfig(DefaultRecoverConfig)
 }
 
-// RecoverWithConfig returns a recover middleware from config.
+// RecoverWithConfig returns a Recover middleware from config.
 // See: `Recover()`.
 func RecoverWithConfig(config RecoverConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultRecoverConfig.Skipper
+	}
 	if config.StackSize == 0 {
 		config.StackSize = DefaultRecoverConfig.StackSize
 	}
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			defer func() {
 				if r := recover(); r != nil {
 					var err error

middleware/secure.go

@@ -7,8 +7,11 @@ import (
 )
 
 type (
-	// SecureConfig defines the config for secure middleware.
+	// SecureConfig defines the config for Secure middleware.
 	SecureConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// XSSProtection provides protection against cross-site scripting attack (XSS)
 		// by setting the `X-XSS-Protection` header.
 		// Optional. Default value "1; mode=block".
@@ -54,15 +57,16 @@ type (
 )
 
 var (
-	// DefaultSecureConfig is the default secure middleware config.
+	// DefaultSecureConfig is the default Secure middleware config.
 	DefaultSecureConfig = SecureConfig{
+		Skipper:            defaultSkipper,
 		XSSProtection:      "1; mode=block",
 		ContentTypeNosniff: "nosniff",
 		XFrameOptions:      "SAMEORIGIN",
 	}
 )
 
-// Secure returns a secure middleware.
+// Secure returns a Secure middleware.
 // Secure middleware provides protection against cross-site scripting (XSS) attack,
 // content type sniffing, clickjacking, insecure connection and other code injection
 // attacks.
@@ -70,11 +74,20 @@ func Secure() echo.MiddlewareFunc {
 	return SecureWithConfig(DefaultSecureConfig)
 }
 
-// SecureWithConfig returns a secure middleware from config.
+// SecureWithConfig returns a Secure middleware from config.
 // See: `Secure()`.
 func SecureWithConfig(config SecureConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultSecureConfig.Skipper
+	}
+
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			res := c.Response()
 

middleware/slash.go

@@ -7,12 +7,22 @@ import (
 type (
 	// TrailingSlashConfig defines the config for TrailingSlash middleware.
 	TrailingSlashConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Status code to be used when redirecting the request.
 		// Optional, but when provided the request is redirected using this code.
 		RedirectCode int `json:"redirect_code"`
 	}
 )
 
+var (
+	// DefaultTrailingSlashConfig is the default TrailingSlash middleware config.
+	DefaultTrailingSlashConfig = TrailingSlashConfig{
+		Skipper: defaultSkipper,
+	}
+)
+
 // AddTrailingSlash returns a root level (before router) middleware which adds a
 // trailing slash to the request `URL#Path`.
 //
@@ -24,8 +34,17 @@ func AddTrailingSlash() echo.MiddlewareFunc {
 // AddTrailingSlashWithConfig returns a AddTrailingSlash middleware from config.
 // See `AddTrailingSlash()`.
 func AddTrailingSlashWithConfig(config TrailingSlashConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultTrailingSlashConfig.Skipper
+	}
+
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			url := req.URL()
 			path := url.Path()
@@ -62,8 +81,17 @@ func RemoveTrailingSlash() echo.MiddlewareFunc {
 // RemoveTrailingSlashWithConfig returns a RemoveTrailingSlash middleware from config.
 // See `RemoveTrailingSlash()`.
 func RemoveTrailingSlashWithConfig(config TrailingSlashConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultTrailingSlashConfig.Skipper
+	}
+
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			req := c.Request()
 			url := req.URL()
 			path := url.Path()

middleware/static.go

@@ -10,8 +10,11 @@ import (
 )
 
 type (
-	// StaticConfig defines the config for static middleware.
+	// StaticConfig defines the config for Static middleware.
 	StaticConfig struct {
+		// Skipper defines a function to skip middleware.
+		Skipper Skipper
+
 		// Root directory from where the static content is served.
 		// Required.
 		Root string `json:"root"`
@@ -32,13 +35,14 @@ type (
 )
 
 var (
-	// DefaultStaticConfig is the default static middleware config.
+	// DefaultStaticConfig is the default Static middleware config.
 	DefaultStaticConfig = StaticConfig{
-		Index: "index.html",
+		Skipper: defaultSkipper,
+		Index:   "index.html",
 	}
 )
 
-// Static returns a static middleware to serves static content from the provided
+// Static returns a Static middleware to serves static content from the provided
 // root directory.
 func Static(root string) echo.MiddlewareFunc {
 	c := DefaultStaticConfig
@@ -46,16 +50,23 @@ func Static(root string) echo.MiddlewareFunc {
 	return StaticWithConfig(c)
 }
 
-// StaticWithConfig returns a static middleware from config.
+// StaticWithConfig returns a Static middleware from config.
 // See `Static()`.
 func StaticWithConfig(config StaticConfig) echo.MiddlewareFunc {
 	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultStaticConfig.Skipper
+	}
 	if config.Index == "" {
 		config.Index = DefaultStaticConfig.Index
 	}
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
 			fs := http.Dir(config.Root)
 			p := c.Request().URL().Path()
 			if strings.Contains(c.Path(), "*") { // If serving from a group, e.g. `/static*`.