1 files changed, 9 insertions, 0 deletions
diff --git a/forstio/io/io.h b/forstio/io/io.h
index 4a87da5..bcc59fd 100644
--- a/forstio/io/io.h
+++ b/forstio/io/io.h
@@ -8,6 +8,15 @@
 #include <variant>
 
 namespace saw {
+/**
+ * Set of error common in io
+ */
+namespace err {
+struct disconnected {
+	static constexpr std::string_view description = "Disconnected";
+	static constexpr bool is_critical = true;
+};
+}
 /*
  * Input stream
  */