From d2a3a82b950fe5d307685ff1e275c200bc057934 Mon Sep 17 00:00:00 2001
From: GHXX <GHXX@gmx.at>
Date: Mon, 2 Jun 2025 17:23:35 +0200
Subject: [PATCH] Add option to ignore trailing slashes in requests

---
 SimpleHttpServer/HttpServer.cs                    | 9 +++++++--
 SimpleHttpServer/SimpleHttpServerConfiguration.cs | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/SimpleHttpServer/HttpServer.cs b/SimpleHttpServer/HttpServer.cs
index 2df5293..0ce3537 100644
--- a/SimpleHttpServer/HttpServer.cs
+++ b/SimpleHttpServer/HttpServer.cs
@@ -213,7 +213,7 @@ public sealed class HttpServer {
 
     private readonly Dictionary<Type, IParameterConverter> stringToTypeParameterConverters = new();
 
-    private static string NormalizeUrlPath(string url) {
+    private string NormalizeUrlPath(string url) {
         var fwdSlashUrl = url.Replace('\\', '/');
 
         var segments = fwdSlashUrl.Trim('/').Split('/', StringSplitOptions.RemoveEmptyEntries).ToList();
@@ -242,7 +242,12 @@ public sealed class HttpServer {
         }
         rv.AppendJoin('/', simplifiedSegmentsReversed.Reverse<string>());
 
-        return '/' + (rv.ToString().TrimEnd('/') + (fwdSlashUrl.EndsWith('/') ? "/" : "")).TrimStart('/');
+        var suffix = (rv.ToString().TrimEnd('/') + (fwdSlashUrl.EndsWith('/') ? "/" : "")).TrimStart('/');
+        if (conf.TrimTrailingSlash) {
+            suffix = suffix.TrimEnd('/');
+        }
+
+        return '/' + suffix;
     }
 
     private async Task ProcessRequestAsync(HttpListenerContext ctx) {
diff --git a/SimpleHttpServer/SimpleHttpServerConfiguration.cs b/SimpleHttpServer/SimpleHttpServerConfiguration.cs
index 64e4e63..5633aad 100644
--- a/SimpleHttpServer/SimpleHttpServerConfiguration.cs
+++ b/SimpleHttpServer/SimpleHttpServerConfiguration.cs
@@ -13,6 +13,10 @@ public class SimpleHttpServerConfiguration {
     /// See description of <see cref="DisableLogMessagePrinting"/>
     /// </summary>
     public CustomLogMessageHandler? LogMessageHandler { get; init; } = null;
+    /// <summary>
+    /// If set to true, paths ending with / are identical to paths without said trailing slash. E.g. /index is then the same as /index/
+    /// </summary>
+    public bool TrimTrailingSlash { get; init; } = true;
 
     public SimpleHttpServerConfiguration() { }