diff --git a/reverseproxy.go b/reverseproxy.go
index 26a93a9..d742173 100644
--- a/reverseproxy.go
+++ b/reverseproxy.go
@@ -28,7 +28,7 @@ func New(ctx context.Context, host string) *ReverseProxy {
 			targetQuery := target.RawQuery
 			r.URL.Scheme = target.Scheme
 			r.URL.Host = target.Host
-			r.URL.Path, r.URL.RawPath = joinURLPath(target, r.URL)
+			r.URL.Path, r.URL.RawPath = JoinURLPath(target, r.URL)
 			if targetQuery == "" || r.URL.RawQuery == "" {
 				r.URL.RawQuery = targetQuery + r.URL.RawQuery
 			} else {
@@ -45,11 +45,11 @@ func (revereProxy *ReverseProxy) SetContext(ctx context.Context) {
 	revereProxy.Context = ctx
 }
 func (revereProxy *ReverseProxy) DirectorFunc(df func(jup JoinURLPathFunc) DirectorFunc) {
-	d := df(joinURLPath)
+	d := df(JoinURLPath)
 	revereProxy.Director = d
 }
 
-func singleJoiningSlash(a, b string) string {
+func SingleJoiningSlash(a, b string) string {
 	aslash := strings.HasSuffix(a, "/")
 	bslash := strings.HasPrefix(b, "/")
 	switch {
@@ -61,9 +61,9 @@ func singleJoiningSlash(a, b string) string {
 	return a + b
 }
 
-func joinURLPath(a, b *url.URL) (path, rawpath string) {
+func JoinURLPath(a, b *url.URL) (path, rawpath string) {
 	if a.RawPath == "" && b.RawPath == "" {
-		return singleJoiningSlash(a.Path, b.Path), ""
+		return SingleJoiningSlash(a.Path, b.Path), ""
 	}
 	// Same as singleJoiningSlash, but uses EscapedPath to determine
 	// whether a slash should be added
@@ -86,3 +86,12 @@ type JoinURLPathFunc func(*url.URL, *url.URL) (string, string)
 
 // type SingleJoiningSlashFunc func(string, string) string
 type DirectorFunc func(*http.Request)
+
+func StripPrefix(r *http.Request, prefix string) *http.Request {
+	newPath := strings.TrimPrefix(r.URL.Path, prefix)
+	if newPath == "" {
+		newPath = "/"
+	}
+	r.URL.Path = newPath
+	return r
+}