From 7bf527b34d5a589d9b8dd5722c9f3ff6c0d5b9e7 Mon Sep 17 00:00:00 2001
From: Rudi Floren <rudi@instant.ca>
Date: Thu, 4 Jan 2024 19:56:01 +0100
Subject: [PATCH] Add is_persistent to ResultCode (#32)

This is helpful when EPP requests are executed in a loop, and you want to
know if the error result will persist for additional requests with
similar but different arguments.
---
 src/response.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/response.rs b/src/response.rs
index fb6d97c..9176082 100644
--- a/src/response.rs
+++ b/src/response.rs
@@ -135,6 +135,31 @@ impl ResultCode {
                 | CommandCompletedSuccessfullyEndingSession
         )
     }
+
+    /// Returns true if this error is likely to persist across similar requests inside the same
+    /// connection or session.
+    ///
+    /// The same command with different arguments might succeed in some cases.
+    pub fn is_persistent(&self) -> bool {
+        use ResultCode::*;
+        match self {
+            // The same command with different arguments will result in the same error
+            UnknownCommand
+            | CommandSyntaxError
+            | RequiredParameterMissing
+            | ParameterValueRangeError
+            | ParameterValueSyntaxError
+            | UnimplementedProtocolVersion
+            | UnimplementedCommand
+            | UnimplementedOption
+            | UnimplementedExtension => true,
+            // The connection is in an unhealthy state
+            CommandFailedServerClosingConnection
+            | AuthenticationErrorServerClosingConnection
+            | SessionLimitExceededServerClosingConnection => true,
+            _ => false,
+        }
+    }
 }
 
 impl<'xml> FromXml<'xml> for ResultCode {