From ca60dd2d734147b440a8ce8ec7018577df29bb78 Mon Sep 17 00:00:00 2001
From: Richard87 <richard.hagen@gmail.com>
Date: Thu, 24 Oct 2024 13:17:26 +0200
Subject: [PATCH] fix: dont parse empty strings

---
 handler.go | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/handler.go b/handler.go
index 0d419b7..138f3cf 100644
--- a/handler.go
+++ b/handler.go
@@ -50,11 +50,11 @@ func NewBackendController() RouteMapper {
 
 			logDebugHeaders(r)
 
-			errCode := r.Header.Get(CodeHeader)
-			code, err := strconv.Atoi(errCode)
+			statusCode := r.Header.Get(CodeHeader)
+			code, err := parseErrorCode(statusCode)
 			if err != nil {
 				code = 404
-				logger.Warn().Err(err).Str("code", errCode).Msg("unexpected error reading return code")
+				logger.Warn().Err(err).Int("code", code).Msgf("unexpected error reading return code: %s", statusCode)
 			}
 			scode := strconv.Itoa(code)
 			w.WriteHeader(code)
@@ -94,6 +94,19 @@ func NewBackendController() RouteMapper {
 	}
 }
 
+func parseErrorCode(errCode string) (int, error) {
+	if errCode == "" {
+		return 404, nil
+	}
+
+	parsedCode, err := strconv.Atoi(errCode)
+	if err != nil {
+		return 404, err
+	}
+
+	return parsedCode, nil
+}
+
 func getHtmlFile(namespace string) string {
 	if namespace == "" {
 		return "default.html"