Fixed #406

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

engine/engine.go

@@ -64,6 +64,7 @@ type (
 		Path() string
 		SetPath(string)
 		QueryValue(string) string
+		QueryString() string
 	}
 
 	// Config defines engine configuration.

engine/fasthttp/header.go

@@ -42,6 +42,7 @@ func (h *RequestHeader) reset(hdr *fasthttp.RequestHeader) {
 
 // Add implements `engine.Header#Add` method.
 func (h *ResponseHeader) Add(key, val string) {
+	// TODO: https://github.com/valyala/fasthttp/issues/69
 	// h.header.Add(key, val)
 }
 

engine/fasthttp/url.go

@@ -26,6 +26,11 @@ func (u *URL) QueryValue(name string) string {
 	return string(u.QueryArgs().Peek(name))
 }
 
+// QueryString implements `engine.URL#QueryString` method.
+func (u *URL) QueryString() string {
+	return string(u.URI.QueryString())
+}
+
 func (u *URL) reset(uri *fasthttp.URI) {
 	u.URI = uri
 }

engine/standard/url.go

@@ -28,6 +28,11 @@ func (u *URL) QueryValue(name string) string {
 	return u.query.Get(name)
 }
 
+// QueryString implements `engine.URL#QueryString` method.
+func (u *URL) QueryString() string {
+	return u.URL.RawQuery
+}
+
 func (u *URL) reset(url *url.URL) {
 	u.URL = url
 }

test/url.go

@@ -28,6 +28,10 @@ func (u *URL) QueryValue(name string) string {
 	return u.query.Get(name)
 }
 
+func (u *URL) QueryString() string {
+	return u.url.RawQuery
+}
+
 func (u *URL) Object() interface{} {
 	return u.url
 }