Draft: add gRPC extensions an configuration class

Directory.Build.targets

@@ -49,6 +49,8 @@
 
     <PackageReference Update="Castle.Windsor" Version="6.0.0" />
 
+	<PackageReference Update="Grpc.Core" Version="2.46.6" />
+	<PackageReference Update="Grpc.Net.Client" Version="2.71.0" />
   </ItemGroup>
 
 </Project>

src/Moryx/Grpc/ClientConfig.cs

@@ -0,0 +1,42 @@
+// Copyright (c) 2025, Phoenix Contact GmbH & Co. KG
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.ComponentModel;
+
+namespace Moryx.Grpc;
+
+/// <summary>
+/// Configuration for the gRPC client.
+/// </summary>
+public class ClientConfig
+{
+    /// <summary>
+    /// Host of the gRPC server
+    /// </summary>
+    /// <example>localhost</example>
+    /// <example>127.0.0.1</example>
+    [Description("Hostname of the gRPC server"), DefaultValue("localhost")]
+    public string Host { get; set; }
+
+    /// <summary>
+    /// Hostname of the gRPC server
+    /// </summary>
+    /// <example>50021</example>
+    [Description("Port of the gRPC server"), DefaultValue(50021)]
+    public int Port { get; set; }
+
+
+    /// <summary>
+    /// Whether to use TLS or not
+    /// </summary>
+    [Description("Wheter to use TLS or not"), DefaultValue(true)]
+    public bool UseTls { get; set; }
+
+    /// <summary>
+    /// Path to `.cert` file
+    /// </summary>
+    /// <example>https://localhost:50021</example>
+    [Description("Path to `.crt` file, in case of TLS security"), DefaultValue("certificate.crt")]
+    public string CertPath { get; set; }
+}

src/Moryx/Grpc/ClientConfigExtensions.cs

@@ -0,0 +1,66 @@
+
+using Grpc.Core;
+using Grpc.Net.Client;
+using System;
+using System.Net.Http;
+
+namespace Moryx.Grpc
+{
+    /// <summary>
+    /// Extension methods for ClientConfig
+    /// </summary>
+    public static class ClientConfigExtensions
+    {
+        /// <summary>
+        /// With a given <paramref name="config"/> creates an Address/URL
+        /// </summary>
+        /// <param name="config"></param>
+        /// <returns></returns>
+        public static string CreateAddress(ClientConfig config)
+        {
+            var uriBuilder = new UriBuilder()
+            {
+                Host = config.Host,
+                Port = config.Port,
+                Scheme = config.UseTls ? "https" : "http"
+            };
+            return uriBuilder.Uri.ToString();
+        }
+
+        /// <summary>
+        /// WIth a given <paramref name="config"/> creates a channel options
+        /// </summary>
+        /// <param name="config"></param>
+        /// <returns></returns>
+        public static GrpcChannelOptions CreateChannelOptions(ClientConfig config)
+        {
+
+            if (config.UseTls)
+            {
+                // Make sure to use the certificate from the provided path
+                // Adding it to the (windows) certificates store did not work
+                // Maybe this can be improved in the future
+                var httpClientHandler = new HttpClientHandler
+                {
+                    ServerCertificateCustomValidationCallback = (message, cert, chain, errors) =>
+                    {
+#if NET8_0_OR_GREATER
+                        chain!.ChainPolicy.TrustMode = System.Security.Cryptography.X509Certificates.X509ChainTrustMode.CustomRootTrust;
+                        chain.ChainPolicy.CustomTrustStore.Add(new System.Security.Cryptography.X509Certificates.X509Certificate2(config.CertPath!));
+#endif
+                        return chain.Build(cert!);
+                    }
+                };
+                return new GrpcChannelOptions
+                {
+                    HttpHandler = httpClientHandler,
+                };
+            }
+
+            return new GrpcChannelOptions
+            {
+                Credentials = ChannelCredentials.Insecure,
+            };
+        }
+    }
+}

src/Moryx/Moryx.csproj

@@ -15,7 +15,10 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" />
-    <PackageReference Include="Microsoft.Extensions.Logging"/>
+    <PackageReference Include="Microsoft.Extensions.Logging" />
+
+	<PackageReference Include="Grpc.Net.Client" />
+	<PackageReference Include="Grpc.Core" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0'">