Added String method to Request and Response

http.go

@@ -344,6 +344,28 @@ func (resp *Response) Write(w *bufio.Writer) error {
 	return err
 }
 
+// String returns request representation.
+//
+// Use Write instead of String for performance-critical code.
+func (req *Request) String() string {
+	var w bytes.Buffer
+	bw := bufio.NewWriter(&w)
+	req.Write(bw)
+	bw.Flush()
+	return string(w.Bytes())
+}
+
+// String returns response representation.
+//
+// Use Write instead of String for performance-critical code.
+func (resp *Response) String() string {
+	var w bytes.Buffer
+	bw := bufio.NewWriter(&w)
+	resp.Write(bw)
+	bw.Flush()
+	return string(w.Bytes())
+}
+
 func writeBodyChunked(w *bufio.Writer, r io.Reader) error {
 	vbuf := copyBufPool.Get()
 	if vbuf == nil {

http_test.go

@@ -8,6 +8,16 @@ import (
 	"testing"
 )
 
+func TestRequestString(t *testing.T) {
+	var r Request
+	r.SetRequestURI("http://foobar.com/aaa")
+	s := r.String()
+	expectedS := "GET /aaa HTTP/1.1\r\nUser-Agent: fasthttp client\r\nHost: foobar.com\r\n\r\n"
+	if s != expectedS {
+		t.Fatalf("unexpected request: %q. Expecting %q", s, expectedS)
+	}
+}
+
 func TestRequestBodyWriter(t *testing.T) {
 	var r Request
 	w := r.BodyWriter()