Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

@@ -110,2 +115,4 @@
 }
 
+func (ww *responseReadWriter) WriteHeader(code int) {
+	ww.Do(func() {

@@ -160,2 +149,2 @@
-				}
-			}
+			httplog := filelog.getHTTPLogger(r).
+				withFieldIfExist("query", r.URL.Query()).

@@ -187,2 +228,3 @@
 
-	httplog = httplog.With(zap.String("body", base64.StdEncoding.EncodeToString(body)))
+// ProcessBody reads body and base64 encode it if it's not XML.
+func ProcessBody(bodyReader io.Reader) ([]byte, error) {

@@ -189,0 +234,4 @@
+		return nil, err
+	}
+	writer := utils.ChooseWriter(isXML, resultBody)
+	writer.Write(checkedPart)

@@ -0,0 +10,4 @@
+
+const BodyRecognizeLimit int64 = 128
+
+func DetectXML(reader io.Reader) (bool, []byte, error) {

@@ -0,0 +30,4 @@
+
+func ChooseWriter(isXML bool, body *bytes.Buffer) io.Writer {
+	if !isXML {
+		return base64.NewEncoder(base64.StdEncoding, body)

@@ -0,0 +16,4 @@
+	return nil
+}
+
+const BodyRecognizeLimit int64 = 128

@@ -162,0 +156,4 @@
+			payload := getBody(r.Body, l)
+			r.Body = io.NopCloser(bytes.NewReader(payload))
+
+			payloadReader := io.LimitReader(bytes.NewReader(payload), config.MaxBody)

@@ -189,0 +231,4 @@
+// processBody reads body and base64 encode it if it's not XML.
+func processBody(bodyReader io.Reader) ([]byte, error) {
+	resultBody := &bytes.Buffer{}
+	isXML, checkedBytes, err := utils.DetectXML(bodyReader)