From 40ff62b6dd0467ee68f1bf79b078358fd90d7029 Mon Sep 17 00:00:00 2001
From: Henrik Gedionsen <hg@impact.dk>
Date: Mon, 21 Oct 2024 13:23:20 +0200
Subject: [PATCH 1/3] Reduce the size of the internal struct
 ServerGrpcWebContext that is copied around

---
 src/Grpc.AspNetCore.Web/Internal/ServerGrpcWebMode.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Grpc.AspNetCore.Web/Internal/ServerGrpcWebMode.cs b/src/Grpc.AspNetCore.Web/Internal/ServerGrpcWebMode.cs
index 2d7a74938..ce980264d 100644
--- a/src/Grpc.AspNetCore.Web/Internal/ServerGrpcWebMode.cs
+++ b/src/Grpc.AspNetCore.Web/Internal/ServerGrpcWebMode.cs
@@ -20,7 +20,7 @@ namespace Grpc.AspNetCore.Web.Internal;
 
 internal readonly record struct ServerGrpcWebContext(ServerGrpcWebMode Request, ServerGrpcWebMode Response);
 
-internal enum ServerGrpcWebMode
+internal enum ServerGrpcWebMode : byte
 {
     None,
     GrpcWeb,

From 8688d5c1796c397650c6e43442e69aec37983964 Mon Sep 17 00:00:00 2001
From: Henrik Gedionsen <hg@impact.dk>
Date: Mon, 21 Oct 2024 13:23:46 +0200
Subject: [PATCH 2/3] Avoid double lookup in dictionary

---
 src/Shared/Server/MethodOptions.cs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/Shared/Server/MethodOptions.cs b/src/Shared/Server/MethodOptions.cs
index 1f0e29c24..f50fc4cd3 100644
--- a/src/Shared/Server/MethodOptions.cs
+++ b/src/Shared/Server/MethodOptions.cs
@@ -158,10 +158,7 @@ private static void AddCompressionProviders(Dictionary<string, ICompressionProvi
         {
             foreach (var compressionProvider in compressionProviders)
             {
-                if (!resolvedProviders.ContainsKey(compressionProvider.EncodingName))
-                {
-                    resolvedProviders.Add(compressionProvider.EncodingName, compressionProvider);
-                }
+                resolvedProviders.TryAdd(compressionProvider.EncodingName, compressionProvider);
             }
         }
     }

From 97583dfbacd2d07451b2b74d45c6c363dd2914a0 Mon Sep 17 00:00:00 2001
From: Henrik Gedionsen <hg@impact.dk>
Date: Mon, 21 Oct 2024 16:12:49 +0200
Subject: [PATCH 3/3] Avoid double lookup in dictionary

---
 .../Internal/GrpcProtocolHelpers.cs                    | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/Grpc.AspNetCore.Server/Internal/GrpcProtocolHelpers.cs b/src/Grpc.AspNetCore.Server/Internal/GrpcProtocolHelpers.cs
index ef5a7b191..9e4e1f7a0 100644
--- a/src/Grpc.AspNetCore.Server/Internal/GrpcProtocolHelpers.cs
+++ b/src/Grpc.AspNetCore.Server/Internal/GrpcProtocolHelpers.cs
@@ -18,6 +18,7 @@
 
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
+using System.Runtime.InteropServices;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using Grpc.Core;
@@ -108,7 +109,7 @@ public static byte[] ParseBinaryHeader(string base64)
         switch (base64.Length % 4)
         {
             case 0:
-                // base64 has the required padding 
+                // base64 has the required padding
                 decodable = base64;
                 break;
             case 2:
@@ -208,11 +209,8 @@ public static AuthContext CreateAuthContext(X509Certificate2 clientCertificate)
 
         static void AddProperty(Dictionary<string, List<AuthProperty>> properties, string name, string value)
         {
-            if (!properties.TryGetValue(name, out var values))
-            {
-                values = new List<AuthProperty>();
-                properties[name] = values;
-            }
+            ref var values = ref CollectionsMarshal.GetValueRefOrAddDefault(properties, name, out _);
+            values ??= [];
 
             values.Add(AuthProperty.Create(name, Encoding.UTF8.GetBytes(value)));
         }