From fcd25bc75fc36a7129bfb481a8553ec13f0a01a9 Mon Sep 17 00:00:00 2001
From: Martin Tirion <mtirion@live.nl>
Date: Mon, 20 Mar 2023 11:55:32 +0100
Subject: [PATCH] Excluded ftp and xref protocols from validation. Changed
 check for @ sign to use of mailto protocol

---
 src/DocLinkChecker/Program.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/DocLinkChecker/Program.cs b/src/DocLinkChecker/Program.cs
index b1a472a..883fab8 100644
--- a/src/DocLinkChecker/Program.cs
+++ b/src/DocLinkChecker/Program.cs
@@ -385,7 +385,10 @@ private static void ProcessFile(DirectoryInfo folder, string filepath)
                         // check link if not to a URL, in-doc link or e-mail address
                         if (!relative.StartsWith("http:") &&
                             !relative.StartsWith("https:") &&
-                            !relative.Contains("@") &&
+                            !relative.StartsWith("ftp:") &&
+                            !relative.StartsWith("ftps:") &&
+                            !relative.StartsWith("xref:") &&
+                            !relative.StartsWith("mailto:") &&
                             !string.IsNullOrEmpty(Path.GetExtension(relative)) &&
                             !string.IsNullOrWhiteSpace(relative))
                         {