add func (req *Request) Reset()

request.go

@@ -264,6 +264,23 @@ func (req *Request) Options(url interface{}) (resp *Response, err error) {
 	return
 }
 
+// Reset all fields to default values
+func (req *Request) Reset() {
+	req.Headers = map[string]string{}
+	for k, v := range DefaultHeaders {
+		req.Headers[k] = v
+	}
+	req.Cookies = nil
+	req.Data = nil
+	req.Params = nil
+	req.Files = nil
+	req.Json = nil
+	req.Proxy = ""
+	req.BasicAuth = BasicAuth{}
+	req.Body = nil
+	return
+}
+
 func url2string(u interface{}) string {
 	switch u.(type) {
 	case string:

request_test.go

@@ -251,3 +251,14 @@ func TestBasicAuth(t *testing.T) {
 	defer resp.Body.Close()
 	assert.Equal(t, resp.OK(), true)
 }
+
+func TestReset(t *testing.T) {
+	c := new(http.Client)
+	req := NewRequest(c)
+	req.BasicAuth = BasicAuth{"user", "passwd"}
+	url := "http://httpbin.org"
+	req.Get(url)
+
+	req.Reset()
+	assert.Equal(t, req.BasicAuth, BasicAuth{})
+}