From 5e51539c33b83b935d2ca31d640a9bcfc4144f4f Mon Sep 17 00:00:00 2001
From: christian <6939810+chkr1011@users.noreply.github.com>
Date: Wed, 1 May 2024 12:17:30 +0200
Subject: [PATCH] Fix .NET Framework builds

---
 .../Options/MqttClientCertificateValidationEventArgs.cs   | 2 +-
 Source/MQTTnet/Implementations/MqttWebSocketChannel.cs    | 8 ++------
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/Source/MQTTnet/Client/Options/MqttClientCertificateValidationEventArgs.cs b/Source/MQTTnet/Client/Options/MqttClientCertificateValidationEventArgs.cs
index 75284c570..1fe22a67d 100644
--- a/Source/MQTTnet/Client/Options/MqttClientCertificateValidationEventArgs.cs
+++ b/Source/MQTTnet/Client/Options/MqttClientCertificateValidationEventArgs.cs
@@ -14,8 +14,8 @@ public MqttClientCertificateValidationEventArgs(X509Certificate certificate, X50
         {
             Certificate = certificate;
             Chain = chain;
-            ClientOptions = clientOptions;
             SslPolicyErrors = sslPolicyErrors;
+            ClientOptions = clientOptions ?? throw new ArgumentNullException(nameof(clientOptions));
         }
 
         public X509Certificate Certificate { get; }
diff --git a/Source/MQTTnet/Implementations/MqttWebSocketChannel.cs b/Source/MQTTnet/Implementations/MqttWebSocketChannel.cs
index 9d4ba32c2..d7c2acf9c 100644
--- a/Source/MQTTnet/Implementations/MqttWebSocketChannel.cs
+++ b/Source/MQTTnet/Implementations/MqttWebSocketChannel.cs
@@ -247,13 +247,9 @@ void SetupClientWebSocket(ClientWebSocket clientWebSocket)
 #elif NET452 || NET461 || NET48
                 ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) =>
                 {
-                    var context = new MqttClientCertificateValidationEventArgs
+                    var context = new MqttClientCertificateValidationEventArgs(certificate, chain, sslPolicyErrors, _options)
                     {
-                        Sender = sender,
-                        Certificate = certificate,
-                        Chain = chain,
-                        SslPolicyErrors = sslPolicyErrors,
-                        ClientOptions = _options
+                        Sender = sender
                     };
 
                     return certificateValidationHandler(context);