update.

Server/ResponseUtility.h

@@ -0,0 +1,19 @@
+#ifndef RESPONSEUTILITY_H
+#define RESPONSEUTILITY_H
+
+#include <string_view>
+
+namespace ResponseUtility {
+/**
+ * @brief Return a reasonable mime type based on the extension of a file.
+ */
+std::string_view mimeType(std::string_view path);
+
+/**
+ * @brief Append an HTTP rel-path to a local filesystem path.The returned path is normalized for the
+ * platform.
+ */
+std::string pathCat(std::string_view base, std::string_view path);
+} // namespace ResponseUtility
+
+#endif // RESPONSEUTILITY_H