Do not use cookies for c# client proxies.

framework/src/Volo.Abp.Http.Client/Microsoft/Extensions/DependencyInjection/ServiceCollectionHttpClientProxyExtensions.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Net.Http;
 using System.Reflection;
 using Castle.DynamicProxy;
 using JetBrains.Annotations;
@@ -196,6 +197,16 @@ public static class ServiceCollectionHttpClientProxyExtensions
             {
                 clientBuildAction(remoteServiceConfigurationName, provider, client);
             }
+        }).ConfigurePrimaryHttpMessageHandler((provider) =>
+        {
+            var handler = new HttpClientHandler { UseCookies = false };
+            
+            foreach (var handlerAction in preOptions.ProxyClientHandlerActions)
+            {
+                handlerAction(remoteServiceConfigurationName, provider, handler);
+            }
+
+            return handler;
         });
 
         foreach (var clientBuildAction in preOptions.ProxyClientBuildActions)

framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/AbpHttpClientBuilderOptions.cs

@@ -12,11 +12,14 @@ public class AbpHttpClientBuilderOptions
     internal HashSet<string> ConfiguredProxyClients { get; }
 
     public List<Action<string, IServiceProvider, HttpClient>> ProxyClientActions { get; }
+    
+    public List<Action<string, IServiceProvider, HttpClientHandler>> ProxyClientHandlerActions { get; }
 
     public AbpHttpClientBuilderOptions()
     {
         ProxyClientBuildActions = new List<Action<string, IHttpClientBuilder>>();
         ConfiguredProxyClients = new HashSet<string>();
         ProxyClientActions = new List<Action<string, IServiceProvider, HttpClient>>();
+        ProxyClientHandlerActions = new List<Action<string, IServiceProvider, HttpClientHandler>>();
     }
 }