diff --git a/src/csharp/Grpc.Core/Internal/NativeExtension.cs b/src/csharp/Grpc.Core/Internal/NativeExtension.cs
index 2a2bea363f9..7528ffacf5b 100644
--- a/src/csharp/Grpc.Core/Internal/NativeExtension.cs
+++ b/src/csharp/Grpc.Core/Internal/NativeExtension.cs
@@ -80,28 +80,25 @@ namespace Grpc.Core.Internal
         /// <summary>
         /// Detects which configuration of native extension to load and load it.
         /// </summary>
-        private static UnmanagedLibrary LoadUnmanagedLibrary()
+        private static NativeMethods LoadNativeMethodsLegacyNetFramework()
         {
             // TODO: allow customizing path to native extension (possibly through exposing a GrpcEnvironment property).
             // See https://github.com/grpc/grpc/pull/7303 for one option.
-            var assemblyDirectory = Path.GetDirectoryName(GetAssemblyPath());
+            var assemblyDirectory = GetAssemblyDirectory();
 
             // With "classic" VS projects, the native libraries get copied using a .targets rule to the build output folder
             // alongside the compiled assembly.
-            // With dotnet cli projects targeting net45 framework, the native libraries (just the required ones)
-            // are similarly copied to the built output folder, through the magic of Microsoft.NETCore.Platforms.
             var classicPath = Path.Combine(assemblyDirectory, GetNativeLibraryFilename());
 
-            // With dotnet cli project targeting netcoreappX.Y, projects will use Grpc.Core assembly directly in the location where it got restored
-            // by nuget. We locate the native libraries based on known structure of Grpc.Core nuget package.
-            // When "dotnet publish" is used, the runtimes directory is copied next to the published assemblies.
-            string runtimesDirectory = string.Format("runtimes/{0}/native", GetRuntimeIdString());
-            var netCorePublishedAppStylePath = Path.Combine(assemblyDirectory, runtimesDirectory, GetNativeLibraryFilename());
-            var netCoreAppStylePath = Path.Combine(assemblyDirectory, "../..", runtimesDirectory, GetNativeLibraryFilename());
-
             // Look for the native library in all possible locations in given order.
-            string[] paths = new[] { classicPath, netCorePublishedAppStylePath, netCoreAppStylePath};
-            return new UnmanagedLibrary(paths);
+            string[] paths = new[] { classicPath };
+
+            // TODO(jtattermusch): the UnmanagedLibrary mechanism for loading the native extension while avoiding
+            // direct use of DllImport is quite complicated and is currently only needed to cover some niche scenarios
+            // (such legacy .NET Framework projects that use assembly shadowing) - everything else can be covered
+            // by using the [DllImport]. We should investigate the possibility of eliminating UnmanagedLibrary completely
+            // in the future.
+            return new NativeMethods(new UnmanagedLibrary(paths));
         }
 
         /// <summary>
@@ -117,7 +114,43 @@ namespace Grpc.Core.Internal
             {
                 return LoadNativeMethodsXamarin();
             }
-            return new NativeMethods(LoadUnmanagedLibrary());
+            if (PlatformApis.IsNetCore)
+            {
+                // On .NET Core, native libraries are a supported feature and the SDK makes
+                // sure that the native library is made available in the right location and that
+                // they will be discoverable by the [DllImport] default loading mechanism,
+                // even in some of the more exotic situations such as single file apps.
+                //
+                // While in theory, we could just [DllImport("grpc_csharp_ext")] for all the platforms
+                // and operating systems, the native libraries in the nuget package
+                // need to be laid out in a way that still allows things to work well under
+                // the legacy .NET Framework (where native libraries are a concept unknown to the runtime).
+                // Therefore, we use several flavors of the DllImport attribute
+                // (e.g. the ".x86" vs ".x64" suffix) and we choose the one we want at runtime.
+                // The classes with the list of DllImport'd methods are code generated,
+                // so having more than just one doesn't really bother us.
+
+                // on Windows, the DllImport("grpc_csharp_ext.x64") doesn't work for some reason,
+                // but DllImport("grpc_csharp_ext.x64.dll") does, so we need a special case for that.
+                bool useDllSuffix = PlatformApis.IsWindows;
+                if (PlatformApis.Is64Bit)
+                {
+                    if (useDllSuffix)
+                    {
+                        return new NativeMethods(new NativeMethods.DllImportsFromSharedLib_x64_dll());
+                    }
+                    return new NativeMethods(new NativeMethods.DllImportsFromSharedLib_x64());
+                }
+                else
+                {
+                    if (useDllSuffix)
+                    {
+                        return new NativeMethods(new NativeMethods.DllImportsFromSharedLib_x86_dll());
+                    }
+                    return new NativeMethods(new NativeMethods.DllImportsFromSharedLib_x86());
+                }
+            }
+            return LoadNativeMethodsLegacyNetFramework();
         }
 
         /// <summary>
@@ -139,6 +172,10 @@ namespace Grpc.Core.Internal
 
         /// <summary>
         /// Return native method delegates when running on the Xamarin platform.
+        /// On Xamarin, the standard <c>[DllImport]</c> loading logic just works
+        /// as the native library metadata is provided by the <c>AndroidNativeLibrary</c> or
+        /// <c>NativeReference</c> items in the Xamarin projects (injected automatically
+        /// by the Grpc.Core.Xamarin nuget).
         /// WARNING: Xamarin support is experimental and work-in-progress. Don't expect it to work.
         /// </summary>
         private static NativeMethods LoadNativeMethodsXamarin()
@@ -147,17 +184,23 @@ namespace Grpc.Core.Internal
             {
                 return new NativeMethods(new NativeMethods.DllImportsFromSharedLib());
             }
-            // not tested yet
             return new NativeMethods(new NativeMethods.DllImportsFromStaticLib());
         }
 
-        private static string GetAssemblyPath()
+        private static string GetAssemblyDirectory()
         {
             var assembly = typeof(NativeExtension).GetTypeInfo().Assembly;
 #if NETSTANDARD
             // Assembly.EscapedCodeBase does not exist under CoreCLR, but assemblies imported from a nuget package
             // don't seem to be shadowed by DNX-based projects at all.
-            return assembly.Location;
+            var assemblyLocation = assembly.Location;
+            if (!string.IsNullOrEmpty(assemblyLocation))
+            {
+                return Path.GetDirectoryName(assemblyLocation);
+            }
+            // In .NET5 single-file deployments, assembly.Location won't be available
+            // Also see https://docs.microsoft.com/en-us/dotnet/core/deploying/single-file#other-considerations
+            return AppContext.BaseDirectory;
 #else
             // If assembly is shadowed (e.g. in a webapp), EscapedCodeBase is pointing
             // to the original location of the assembly, and Location is pointing
@@ -167,9 +210,9 @@ namespace Grpc.Core.Internal
             var escapedCodeBase = assembly.EscapedCodeBase;
             if (IsFileUri(escapedCodeBase))
             {
-                return new Uri(escapedCodeBase).LocalPath;
+                return Path.GetDirectoryName(new Uri(escapedCodeBase).LocalPath);
             }
-            return assembly.Location;
+            return Path.GetDirectoryName(assembly.Location);
 #endif
         }
 
diff --git a/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs b/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs
index 8b60268679d..9bc6a481344 100644
--- a/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs
+++ b/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs
@@ -465,6 +465,438 @@ namespace Grpc.Core.Internal
             this.grpcsharp_test_call_start_unary_echo = DllImportsFromSharedLib.grpcsharp_test_call_start_unary_echo;
         }
 
+        public NativeMethods(DllImportsFromSharedLib_x86 unusedInstance)
+        {
+            this.grpcsharp_init = DllImportsFromSharedLib_x86.grpcsharp_init;
+            this.grpcsharp_shutdown = DllImportsFromSharedLib_x86.grpcsharp_shutdown;
+            this.grpcsharp_version_string = DllImportsFromSharedLib_x86.grpcsharp_version_string;
+            this.grpcsharp_batch_context_create = DllImportsFromSharedLib_x86.grpcsharp_batch_context_create;
+            this.grpcsharp_batch_context_recv_initial_metadata = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_initial_metadata;
+            this.grpcsharp_batch_context_recv_message_length = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_message_length;
+            this.grpcsharp_batch_context_recv_message_next_slice_peek = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_message_next_slice_peek;
+            this.grpcsharp_batch_context_recv_status_on_client_status = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_status_on_client_status;
+            this.grpcsharp_batch_context_recv_status_on_client_details = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_status_on_client_details;
+            this.grpcsharp_batch_context_recv_status_on_client_error_string = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_status_on_client_error_string;
+            this.grpcsharp_batch_context_recv_status_on_client_trailing_metadata = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_status_on_client_trailing_metadata;
+            this.grpcsharp_batch_context_recv_close_on_server_cancelled = DllImportsFromSharedLib_x86.grpcsharp_batch_context_recv_close_on_server_cancelled;
+            this.grpcsharp_batch_context_reset = DllImportsFromSharedLib_x86.grpcsharp_batch_context_reset;
+            this.grpcsharp_batch_context_destroy = DllImportsFromSharedLib_x86.grpcsharp_batch_context_destroy;
+            this.grpcsharp_request_call_context_create = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_create;
+            this.grpcsharp_request_call_context_call = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_call;
+            this.grpcsharp_request_call_context_method = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_method;
+            this.grpcsharp_request_call_context_host = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_host;
+            this.grpcsharp_request_call_context_deadline = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_deadline;
+            this.grpcsharp_request_call_context_request_metadata = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_request_metadata;
+            this.grpcsharp_request_call_context_reset = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_reset;
+            this.grpcsharp_request_call_context_destroy = DllImportsFromSharedLib_x86.grpcsharp_request_call_context_destroy;
+            this.grpcsharp_composite_call_credentials_create = DllImportsFromSharedLib_x86.grpcsharp_composite_call_credentials_create;
+            this.grpcsharp_call_credentials_release = DllImportsFromSharedLib_x86.grpcsharp_call_credentials_release;
+            this.grpcsharp_call_cancel = DllImportsFromSharedLib_x86.grpcsharp_call_cancel;
+            this.grpcsharp_call_cancel_with_status = DllImportsFromSharedLib_x86.grpcsharp_call_cancel_with_status;
+            this.grpcsharp_call_start_unary = DllImportsFromSharedLib_x86.grpcsharp_call_start_unary;
+            this.grpcsharp_call_start_client_streaming = DllImportsFromSharedLib_x86.grpcsharp_call_start_client_streaming;
+            this.grpcsharp_call_start_server_streaming = DllImportsFromSharedLib_x86.grpcsharp_call_start_server_streaming;
+            this.grpcsharp_call_start_duplex_streaming = DllImportsFromSharedLib_x86.grpcsharp_call_start_duplex_streaming;
+            this.grpcsharp_call_send_message = DllImportsFromSharedLib_x86.grpcsharp_call_send_message;
+            this.grpcsharp_call_send_close_from_client = DllImportsFromSharedLib_x86.grpcsharp_call_send_close_from_client;
+            this.grpcsharp_call_send_status_from_server = DllImportsFromSharedLib_x86.grpcsharp_call_send_status_from_server;
+            this.grpcsharp_call_recv_message = DllImportsFromSharedLib_x86.grpcsharp_call_recv_message;
+            this.grpcsharp_call_recv_initial_metadata = DllImportsFromSharedLib_x86.grpcsharp_call_recv_initial_metadata;
+            this.grpcsharp_call_start_serverside = DllImportsFromSharedLib_x86.grpcsharp_call_start_serverside;
+            this.grpcsharp_call_send_initial_metadata = DllImportsFromSharedLib_x86.grpcsharp_call_send_initial_metadata;
+            this.grpcsharp_call_set_credentials = DllImportsFromSharedLib_x86.grpcsharp_call_set_credentials;
+            this.grpcsharp_call_get_peer = DllImportsFromSharedLib_x86.grpcsharp_call_get_peer;
+            this.grpcsharp_call_destroy = DllImportsFromSharedLib_x86.grpcsharp_call_destroy;
+            this.grpcsharp_channel_args_create = DllImportsFromSharedLib_x86.grpcsharp_channel_args_create;
+            this.grpcsharp_channel_args_set_string = DllImportsFromSharedLib_x86.grpcsharp_channel_args_set_string;
+            this.grpcsharp_channel_args_set_integer = DllImportsFromSharedLib_x86.grpcsharp_channel_args_set_integer;
+            this.grpcsharp_channel_args_destroy = DllImportsFromSharedLib_x86.grpcsharp_channel_args_destroy;
+            this.grpcsharp_override_default_ssl_roots = DllImportsFromSharedLib_x86.grpcsharp_override_default_ssl_roots;
+            this.grpcsharp_ssl_credentials_create = DllImportsFromSharedLib_x86.grpcsharp_ssl_credentials_create;
+            this.grpcsharp_composite_channel_credentials_create = DllImportsFromSharedLib_x86.grpcsharp_composite_channel_credentials_create;
+            this.grpcsharp_channel_credentials_release = DllImportsFromSharedLib_x86.grpcsharp_channel_credentials_release;
+            this.grpcsharp_insecure_channel_create = DllImportsFromSharedLib_x86.grpcsharp_insecure_channel_create;
+            this.grpcsharp_secure_channel_create = DllImportsFromSharedLib_x86.grpcsharp_secure_channel_create;
+            this.grpcsharp_channel_create_call = DllImportsFromSharedLib_x86.grpcsharp_channel_create_call;
+            this.grpcsharp_channel_check_connectivity_state = DllImportsFromSharedLib_x86.grpcsharp_channel_check_connectivity_state;
+            this.grpcsharp_channel_watch_connectivity_state = DllImportsFromSharedLib_x86.grpcsharp_channel_watch_connectivity_state;
+            this.grpcsharp_channel_get_target = DllImportsFromSharedLib_x86.grpcsharp_channel_get_target;
+            this.grpcsharp_channel_destroy = DllImportsFromSharedLib_x86.grpcsharp_channel_destroy;
+            this.grpcsharp_sizeof_grpc_event = DllImportsFromSharedLib_x86.grpcsharp_sizeof_grpc_event;
+            this.grpcsharp_completion_queue_create_async = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_create_async;
+            this.grpcsharp_completion_queue_create_sync = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_create_sync;
+            this.grpcsharp_completion_queue_shutdown = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_shutdown;
+            this.grpcsharp_completion_queue_next = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_next;
+            this.grpcsharp_completion_queue_pluck = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_pluck;
+            this.grpcsharp_completion_queue_destroy = DllImportsFromSharedLib_x86.grpcsharp_completion_queue_destroy;
+            this.gprsharp_free = DllImportsFromSharedLib_x86.gprsharp_free;
+            this.grpcsharp_metadata_array_create = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_create;
+            this.grpcsharp_metadata_array_add = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_add;
+            this.grpcsharp_metadata_array_count = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_count;
+            this.grpcsharp_metadata_array_get_key = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_get_key;
+            this.grpcsharp_metadata_array_get_value = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_get_value;
+            this.grpcsharp_metadata_array_destroy_full = DllImportsFromSharedLib_x86.grpcsharp_metadata_array_destroy_full;
+            this.grpcsharp_redirect_log = DllImportsFromSharedLib_x86.grpcsharp_redirect_log;
+            this.grpcsharp_native_callback_dispatcher_init = DllImportsFromSharedLib_x86.grpcsharp_native_callback_dispatcher_init;
+            this.grpcsharp_metadata_credentials_create_from_plugin = DllImportsFromSharedLib_x86.grpcsharp_metadata_credentials_create_from_plugin;
+            this.grpcsharp_metadata_credentials_notify_from_plugin = DllImportsFromSharedLib_x86.grpcsharp_metadata_credentials_notify_from_plugin;
+            this.grpcsharp_ssl_server_credentials_create = DllImportsFromSharedLib_x86.grpcsharp_ssl_server_credentials_create;
+            this.grpcsharp_server_credentials_release = DllImportsFromSharedLib_x86.grpcsharp_server_credentials_release;
+            this.grpcsharp_server_create = DllImportsFromSharedLib_x86.grpcsharp_server_create;
+            this.grpcsharp_server_register_completion_queue = DllImportsFromSharedLib_x86.grpcsharp_server_register_completion_queue;
+            this.grpcsharp_server_add_insecure_http2_port = DllImportsFromSharedLib_x86.grpcsharp_server_add_insecure_http2_port;
+            this.grpcsharp_server_add_secure_http2_port = DllImportsFromSharedLib_x86.grpcsharp_server_add_secure_http2_port;
+            this.grpcsharp_server_start = DllImportsFromSharedLib_x86.grpcsharp_server_start;
+            this.grpcsharp_server_request_call = DllImportsFromSharedLib_x86.grpcsharp_server_request_call;
+            this.grpcsharp_server_cancel_all_calls = DllImportsFromSharedLib_x86.grpcsharp_server_cancel_all_calls;
+            this.grpcsharp_server_shutdown_and_notify_callback = DllImportsFromSharedLib_x86.grpcsharp_server_shutdown_and_notify_callback;
+            this.grpcsharp_server_destroy = DllImportsFromSharedLib_x86.grpcsharp_server_destroy;
+            this.grpcsharp_call_auth_context = DllImportsFromSharedLib_x86.grpcsharp_call_auth_context;
+            this.grpcsharp_auth_context_peer_identity_property_name = DllImportsFromSharedLib_x86.grpcsharp_auth_context_peer_identity_property_name;
+            this.grpcsharp_auth_context_property_iterator = DllImportsFromSharedLib_x86.grpcsharp_auth_context_property_iterator;
+            this.grpcsharp_auth_property_iterator_next = DllImportsFromSharedLib_x86.grpcsharp_auth_property_iterator_next;
+            this.grpcsharp_auth_context_release = DllImportsFromSharedLib_x86.grpcsharp_auth_context_release;
+            this.grpcsharp_slice_buffer_create = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_create;
+            this.grpcsharp_slice_buffer_adjust_tail_space = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_adjust_tail_space;
+            this.grpcsharp_slice_buffer_slice_count = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_slice_count;
+            this.grpcsharp_slice_buffer_slice_peek = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_slice_peek;
+            this.grpcsharp_slice_buffer_reset_and_unref = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_reset_and_unref;
+            this.grpcsharp_slice_buffer_destroy = DllImportsFromSharedLib_x86.grpcsharp_slice_buffer_destroy;
+            this.gprsharp_now = DllImportsFromSharedLib_x86.gprsharp_now;
+            this.gprsharp_inf_future = DllImportsFromSharedLib_x86.gprsharp_inf_future;
+            this.gprsharp_inf_past = DllImportsFromSharedLib_x86.gprsharp_inf_past;
+            this.gprsharp_convert_clock_type = DllImportsFromSharedLib_x86.gprsharp_convert_clock_type;
+            this.gprsharp_sizeof_timespec = DllImportsFromSharedLib_x86.gprsharp_sizeof_timespec;
+            this.grpcsharp_test_callback = DllImportsFromSharedLib_x86.grpcsharp_test_callback;
+            this.grpcsharp_test_nop = DllImportsFromSharedLib_x86.grpcsharp_test_nop;
+            this.grpcsharp_test_override_method = DllImportsFromSharedLib_x86.grpcsharp_test_override_method;
+            this.grpcsharp_test_call_start_unary_echo = DllImportsFromSharedLib_x86.grpcsharp_test_call_start_unary_echo;
+        }
+
+        public NativeMethods(DllImportsFromSharedLib_x64 unusedInstance)
+        {
+            this.grpcsharp_init = DllImportsFromSharedLib_x64.grpcsharp_init;
+            this.grpcsharp_shutdown = DllImportsFromSharedLib_x64.grpcsharp_shutdown;
+            this.grpcsharp_version_string = DllImportsFromSharedLib_x64.grpcsharp_version_string;
+            this.grpcsharp_batch_context_create = DllImportsFromSharedLib_x64.grpcsharp_batch_context_create;
+            this.grpcsharp_batch_context_recv_initial_metadata = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_initial_metadata;
+            this.grpcsharp_batch_context_recv_message_length = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_message_length;
+            this.grpcsharp_batch_context_recv_message_next_slice_peek = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_message_next_slice_peek;
+            this.grpcsharp_batch_context_recv_status_on_client_status = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_status_on_client_status;
+            this.grpcsharp_batch_context_recv_status_on_client_details = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_status_on_client_details;
+            this.grpcsharp_batch_context_recv_status_on_client_error_string = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_status_on_client_error_string;
+            this.grpcsharp_batch_context_recv_status_on_client_trailing_metadata = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_status_on_client_trailing_metadata;
+            this.grpcsharp_batch_context_recv_close_on_server_cancelled = DllImportsFromSharedLib_x64.grpcsharp_batch_context_recv_close_on_server_cancelled;
+            this.grpcsharp_batch_context_reset = DllImportsFromSharedLib_x64.grpcsharp_batch_context_reset;
+            this.grpcsharp_batch_context_destroy = DllImportsFromSharedLib_x64.grpcsharp_batch_context_destroy;
+            this.grpcsharp_request_call_context_create = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_create;
+            this.grpcsharp_request_call_context_call = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_call;
+            this.grpcsharp_request_call_context_method = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_method;
+            this.grpcsharp_request_call_context_host = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_host;
+            this.grpcsharp_request_call_context_deadline = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_deadline;
+            this.grpcsharp_request_call_context_request_metadata = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_request_metadata;
+            this.grpcsharp_request_call_context_reset = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_reset;
+            this.grpcsharp_request_call_context_destroy = DllImportsFromSharedLib_x64.grpcsharp_request_call_context_destroy;
+            this.grpcsharp_composite_call_credentials_create = DllImportsFromSharedLib_x64.grpcsharp_composite_call_credentials_create;
+            this.grpcsharp_call_credentials_release = DllImportsFromSharedLib_x64.grpcsharp_call_credentials_release;
+            this.grpcsharp_call_cancel = DllImportsFromSharedLib_x64.grpcsharp_call_cancel;
+            this.grpcsharp_call_cancel_with_status = DllImportsFromSharedLib_x64.grpcsharp_call_cancel_with_status;
+            this.grpcsharp_call_start_unary = DllImportsFromSharedLib_x64.grpcsharp_call_start_unary;
+            this.grpcsharp_call_start_client_streaming = DllImportsFromSharedLib_x64.grpcsharp_call_start_client_streaming;
+            this.grpcsharp_call_start_server_streaming = DllImportsFromSharedLib_x64.grpcsharp_call_start_server_streaming;
+            this.grpcsharp_call_start_duplex_streaming = DllImportsFromSharedLib_x64.grpcsharp_call_start_duplex_streaming;
+            this.grpcsharp_call_send_message = DllImportsFromSharedLib_x64.grpcsharp_call_send_message;
+            this.grpcsharp_call_send_close_from_client = DllImportsFromSharedLib_x64.grpcsharp_call_send_close_from_client;
+            this.grpcsharp_call_send_status_from_server = DllImportsFromSharedLib_x64.grpcsharp_call_send_status_from_server;
+            this.grpcsharp_call_recv_message = DllImportsFromSharedLib_x64.grpcsharp_call_recv_message;
+            this.grpcsharp_call_recv_initial_metadata = DllImportsFromSharedLib_x64.grpcsharp_call_recv_initial_metadata;
+            this.grpcsharp_call_start_serverside = DllImportsFromSharedLib_x64.grpcsharp_call_start_serverside;
+            this.grpcsharp_call_send_initial_metadata = DllImportsFromSharedLib_x64.grpcsharp_call_send_initial_metadata;
+            this.grpcsharp_call_set_credentials = DllImportsFromSharedLib_x64.grpcsharp_call_set_credentials;
+            this.grpcsharp_call_get_peer = DllImportsFromSharedLib_x64.grpcsharp_call_get_peer;
+            this.grpcsharp_call_destroy = DllImportsFromSharedLib_x64.grpcsharp_call_destroy;
+            this.grpcsharp_channel_args_create = DllImportsFromSharedLib_x64.grpcsharp_channel_args_create;
+            this.grpcsharp_channel_args_set_string = DllImportsFromSharedLib_x64.grpcsharp_channel_args_set_string;
+            this.grpcsharp_channel_args_set_integer = DllImportsFromSharedLib_x64.grpcsharp_channel_args_set_integer;
+            this.grpcsharp_channel_args_destroy = DllImportsFromSharedLib_x64.grpcsharp_channel_args_destroy;
+            this.grpcsharp_override_default_ssl_roots = DllImportsFromSharedLib_x64.grpcsharp_override_default_ssl_roots;
+            this.grpcsharp_ssl_credentials_create = DllImportsFromSharedLib_x64.grpcsharp_ssl_credentials_create;
+            this.grpcsharp_composite_channel_credentials_create = DllImportsFromSharedLib_x64.grpcsharp_composite_channel_credentials_create;
+            this.grpcsharp_channel_credentials_release = DllImportsFromSharedLib_x64.grpcsharp_channel_credentials_release;
+            this.grpcsharp_insecure_channel_create = DllImportsFromSharedLib_x64.grpcsharp_insecure_channel_create;
+            this.grpcsharp_secure_channel_create = DllImportsFromSharedLib_x64.grpcsharp_secure_channel_create;
+            this.grpcsharp_channel_create_call = DllImportsFromSharedLib_x64.grpcsharp_channel_create_call;
+            this.grpcsharp_channel_check_connectivity_state = DllImportsFromSharedLib_x64.grpcsharp_channel_check_connectivity_state;
+            this.grpcsharp_channel_watch_connectivity_state = DllImportsFromSharedLib_x64.grpcsharp_channel_watch_connectivity_state;
+            this.grpcsharp_channel_get_target = DllImportsFromSharedLib_x64.grpcsharp_channel_get_target;
+            this.grpcsharp_channel_destroy = DllImportsFromSharedLib_x64.grpcsharp_channel_destroy;
+            this.grpcsharp_sizeof_grpc_event = DllImportsFromSharedLib_x64.grpcsharp_sizeof_grpc_event;
+            this.grpcsharp_completion_queue_create_async = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_create_async;
+            this.grpcsharp_completion_queue_create_sync = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_create_sync;
+            this.grpcsharp_completion_queue_shutdown = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_shutdown;
+            this.grpcsharp_completion_queue_next = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_next;
+            this.grpcsharp_completion_queue_pluck = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_pluck;
+            this.grpcsharp_completion_queue_destroy = DllImportsFromSharedLib_x64.grpcsharp_completion_queue_destroy;
+            this.gprsharp_free = DllImportsFromSharedLib_x64.gprsharp_free;
+            this.grpcsharp_metadata_array_create = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_create;
+            this.grpcsharp_metadata_array_add = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_add;
+            this.grpcsharp_metadata_array_count = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_count;
+            this.grpcsharp_metadata_array_get_key = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_get_key;
+            this.grpcsharp_metadata_array_get_value = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_get_value;
+            this.grpcsharp_metadata_array_destroy_full = DllImportsFromSharedLib_x64.grpcsharp_metadata_array_destroy_full;
+            this.grpcsharp_redirect_log = DllImportsFromSharedLib_x64.grpcsharp_redirect_log;
+            this.grpcsharp_native_callback_dispatcher_init = DllImportsFromSharedLib_x64.grpcsharp_native_callback_dispatcher_init;
+            this.grpcsharp_metadata_credentials_create_from_plugin = DllImportsFromSharedLib_x64.grpcsharp_metadata_credentials_create_from_plugin;
+            this.grpcsharp_metadata_credentials_notify_from_plugin = DllImportsFromSharedLib_x64.grpcsharp_metadata_credentials_notify_from_plugin;
+            this.grpcsharp_ssl_server_credentials_create = DllImportsFromSharedLib_x64.grpcsharp_ssl_server_credentials_create;
+            this.grpcsharp_server_credentials_release = DllImportsFromSharedLib_x64.grpcsharp_server_credentials_release;
+            this.grpcsharp_server_create = DllImportsFromSharedLib_x64.grpcsharp_server_create;
+            this.grpcsharp_server_register_completion_queue = DllImportsFromSharedLib_x64.grpcsharp_server_register_completion_queue;
+            this.grpcsharp_server_add_insecure_http2_port = DllImportsFromSharedLib_x64.grpcsharp_server_add_insecure_http2_port;
+            this.grpcsharp_server_add_secure_http2_port = DllImportsFromSharedLib_x64.grpcsharp_server_add_secure_http2_port;
+            this.grpcsharp_server_start = DllImportsFromSharedLib_x64.grpcsharp_server_start;
+            this.grpcsharp_server_request_call = DllImportsFromSharedLib_x64.grpcsharp_server_request_call;
+            this.grpcsharp_server_cancel_all_calls = DllImportsFromSharedLib_x64.grpcsharp_server_cancel_all_calls;
+            this.grpcsharp_server_shutdown_and_notify_callback = DllImportsFromSharedLib_x64.grpcsharp_server_shutdown_and_notify_callback;
+            this.grpcsharp_server_destroy = DllImportsFromSharedLib_x64.grpcsharp_server_destroy;
+            this.grpcsharp_call_auth_context = DllImportsFromSharedLib_x64.grpcsharp_call_auth_context;
+            this.grpcsharp_auth_context_peer_identity_property_name = DllImportsFromSharedLib_x64.grpcsharp_auth_context_peer_identity_property_name;
+            this.grpcsharp_auth_context_property_iterator = DllImportsFromSharedLib_x64.grpcsharp_auth_context_property_iterator;
+            this.grpcsharp_auth_property_iterator_next = DllImportsFromSharedLib_x64.grpcsharp_auth_property_iterator_next;
+            this.grpcsharp_auth_context_release = DllImportsFromSharedLib_x64.grpcsharp_auth_context_release;
+            this.grpcsharp_slice_buffer_create = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_create;
+            this.grpcsharp_slice_buffer_adjust_tail_space = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_adjust_tail_space;
+            this.grpcsharp_slice_buffer_slice_count = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_slice_count;
+            this.grpcsharp_slice_buffer_slice_peek = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_slice_peek;
+            this.grpcsharp_slice_buffer_reset_and_unref = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_reset_and_unref;
+            this.grpcsharp_slice_buffer_destroy = DllImportsFromSharedLib_x64.grpcsharp_slice_buffer_destroy;
+            this.gprsharp_now = DllImportsFromSharedLib_x64.gprsharp_now;
+            this.gprsharp_inf_future = DllImportsFromSharedLib_x64.gprsharp_inf_future;
+            this.gprsharp_inf_past = DllImportsFromSharedLib_x64.gprsharp_inf_past;
+            this.gprsharp_convert_clock_type = DllImportsFromSharedLib_x64.gprsharp_convert_clock_type;
+            this.gprsharp_sizeof_timespec = DllImportsFromSharedLib_x64.gprsharp_sizeof_timespec;
+            this.grpcsharp_test_callback = DllImportsFromSharedLib_x64.grpcsharp_test_callback;
+            this.grpcsharp_test_nop = DllImportsFromSharedLib_x64.grpcsharp_test_nop;
+            this.grpcsharp_test_override_method = DllImportsFromSharedLib_x64.grpcsharp_test_override_method;
+            this.grpcsharp_test_call_start_unary_echo = DllImportsFromSharedLib_x64.grpcsharp_test_call_start_unary_echo;
+        }
+
+        public NativeMethods(DllImportsFromSharedLib_x86_dll unusedInstance)
+        {
+            this.grpcsharp_init = DllImportsFromSharedLib_x86_dll.grpcsharp_init;
+            this.grpcsharp_shutdown = DllImportsFromSharedLib_x86_dll.grpcsharp_shutdown;
+            this.grpcsharp_version_string = DllImportsFromSharedLib_x86_dll.grpcsharp_version_string;
+            this.grpcsharp_batch_context_create = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_create;
+            this.grpcsharp_batch_context_recv_initial_metadata = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_initial_metadata;
+            this.grpcsharp_batch_context_recv_message_length = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_message_length;
+            this.grpcsharp_batch_context_recv_message_next_slice_peek = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_message_next_slice_peek;
+            this.grpcsharp_batch_context_recv_status_on_client_status = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_status_on_client_status;
+            this.grpcsharp_batch_context_recv_status_on_client_details = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_status_on_client_details;
+            this.grpcsharp_batch_context_recv_status_on_client_error_string = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_status_on_client_error_string;
+            this.grpcsharp_batch_context_recv_status_on_client_trailing_metadata = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_status_on_client_trailing_metadata;
+            this.grpcsharp_batch_context_recv_close_on_server_cancelled = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_recv_close_on_server_cancelled;
+            this.grpcsharp_batch_context_reset = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_reset;
+            this.grpcsharp_batch_context_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_batch_context_destroy;
+            this.grpcsharp_request_call_context_create = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_create;
+            this.grpcsharp_request_call_context_call = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_call;
+            this.grpcsharp_request_call_context_method = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_method;
+            this.grpcsharp_request_call_context_host = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_host;
+            this.grpcsharp_request_call_context_deadline = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_deadline;
+            this.grpcsharp_request_call_context_request_metadata = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_request_metadata;
+            this.grpcsharp_request_call_context_reset = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_reset;
+            this.grpcsharp_request_call_context_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_request_call_context_destroy;
+            this.grpcsharp_composite_call_credentials_create = DllImportsFromSharedLib_x86_dll.grpcsharp_composite_call_credentials_create;
+            this.grpcsharp_call_credentials_release = DllImportsFromSharedLib_x86_dll.grpcsharp_call_credentials_release;
+            this.grpcsharp_call_cancel = DllImportsFromSharedLib_x86_dll.grpcsharp_call_cancel;
+            this.grpcsharp_call_cancel_with_status = DllImportsFromSharedLib_x86_dll.grpcsharp_call_cancel_with_status;
+            this.grpcsharp_call_start_unary = DllImportsFromSharedLib_x86_dll.grpcsharp_call_start_unary;
+            this.grpcsharp_call_start_client_streaming = DllImportsFromSharedLib_x86_dll.grpcsharp_call_start_client_streaming;
+            this.grpcsharp_call_start_server_streaming = DllImportsFromSharedLib_x86_dll.grpcsharp_call_start_server_streaming;
+            this.grpcsharp_call_start_duplex_streaming = DllImportsFromSharedLib_x86_dll.grpcsharp_call_start_duplex_streaming;
+            this.grpcsharp_call_send_message = DllImportsFromSharedLib_x86_dll.grpcsharp_call_send_message;
+            this.grpcsharp_call_send_close_from_client = DllImportsFromSharedLib_x86_dll.grpcsharp_call_send_close_from_client;
+            this.grpcsharp_call_send_status_from_server = DllImportsFromSharedLib_x86_dll.grpcsharp_call_send_status_from_server;
+            this.grpcsharp_call_recv_message = DllImportsFromSharedLib_x86_dll.grpcsharp_call_recv_message;
+            this.grpcsharp_call_recv_initial_metadata = DllImportsFromSharedLib_x86_dll.grpcsharp_call_recv_initial_metadata;
+            this.grpcsharp_call_start_serverside = DllImportsFromSharedLib_x86_dll.grpcsharp_call_start_serverside;
+            this.grpcsharp_call_send_initial_metadata = DllImportsFromSharedLib_x86_dll.grpcsharp_call_send_initial_metadata;
+            this.grpcsharp_call_set_credentials = DllImportsFromSharedLib_x86_dll.grpcsharp_call_set_credentials;
+            this.grpcsharp_call_get_peer = DllImportsFromSharedLib_x86_dll.grpcsharp_call_get_peer;
+            this.grpcsharp_call_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_call_destroy;
+            this.grpcsharp_channel_args_create = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_args_create;
+            this.grpcsharp_channel_args_set_string = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_args_set_string;
+            this.grpcsharp_channel_args_set_integer = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_args_set_integer;
+            this.grpcsharp_channel_args_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_args_destroy;
+            this.grpcsharp_override_default_ssl_roots = DllImportsFromSharedLib_x86_dll.grpcsharp_override_default_ssl_roots;
+            this.grpcsharp_ssl_credentials_create = DllImportsFromSharedLib_x86_dll.grpcsharp_ssl_credentials_create;
+            this.grpcsharp_composite_channel_credentials_create = DllImportsFromSharedLib_x86_dll.grpcsharp_composite_channel_credentials_create;
+            this.grpcsharp_channel_credentials_release = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_credentials_release;
+            this.grpcsharp_insecure_channel_create = DllImportsFromSharedLib_x86_dll.grpcsharp_insecure_channel_create;
+            this.grpcsharp_secure_channel_create = DllImportsFromSharedLib_x86_dll.grpcsharp_secure_channel_create;
+            this.grpcsharp_channel_create_call = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_create_call;
+            this.grpcsharp_channel_check_connectivity_state = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_check_connectivity_state;
+            this.grpcsharp_channel_watch_connectivity_state = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_watch_connectivity_state;
+            this.grpcsharp_channel_get_target = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_get_target;
+            this.grpcsharp_channel_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_channel_destroy;
+            this.grpcsharp_sizeof_grpc_event = DllImportsFromSharedLib_x86_dll.grpcsharp_sizeof_grpc_event;
+            this.grpcsharp_completion_queue_create_async = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_create_async;
+            this.grpcsharp_completion_queue_create_sync = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_create_sync;
+            this.grpcsharp_completion_queue_shutdown = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_shutdown;
+            this.grpcsharp_completion_queue_next = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_next;
+            this.grpcsharp_completion_queue_pluck = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_pluck;
+            this.grpcsharp_completion_queue_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_completion_queue_destroy;
+            this.gprsharp_free = DllImportsFromSharedLib_x86_dll.gprsharp_free;
+            this.grpcsharp_metadata_array_create = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_create;
+            this.grpcsharp_metadata_array_add = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_add;
+            this.grpcsharp_metadata_array_count = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_count;
+            this.grpcsharp_metadata_array_get_key = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_get_key;
+            this.grpcsharp_metadata_array_get_value = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_get_value;
+            this.grpcsharp_metadata_array_destroy_full = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_array_destroy_full;
+            this.grpcsharp_redirect_log = DllImportsFromSharedLib_x86_dll.grpcsharp_redirect_log;
+            this.grpcsharp_native_callback_dispatcher_init = DllImportsFromSharedLib_x86_dll.grpcsharp_native_callback_dispatcher_init;
+            this.grpcsharp_metadata_credentials_create_from_plugin = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_credentials_create_from_plugin;
+            this.grpcsharp_metadata_credentials_notify_from_plugin = DllImportsFromSharedLib_x86_dll.grpcsharp_metadata_credentials_notify_from_plugin;
+            this.grpcsharp_ssl_server_credentials_create = DllImportsFromSharedLib_x86_dll.grpcsharp_ssl_server_credentials_create;
+            this.grpcsharp_server_credentials_release = DllImportsFromSharedLib_x86_dll.grpcsharp_server_credentials_release;
+            this.grpcsharp_server_create = DllImportsFromSharedLib_x86_dll.grpcsharp_server_create;
+            this.grpcsharp_server_register_completion_queue = DllImportsFromSharedLib_x86_dll.grpcsharp_server_register_completion_queue;
+            this.grpcsharp_server_add_insecure_http2_port = DllImportsFromSharedLib_x86_dll.grpcsharp_server_add_insecure_http2_port;
+            this.grpcsharp_server_add_secure_http2_port = DllImportsFromSharedLib_x86_dll.grpcsharp_server_add_secure_http2_port;
+            this.grpcsharp_server_start = DllImportsFromSharedLib_x86_dll.grpcsharp_server_start;
+            this.grpcsharp_server_request_call = DllImportsFromSharedLib_x86_dll.grpcsharp_server_request_call;
+            this.grpcsharp_server_cancel_all_calls = DllImportsFromSharedLib_x86_dll.grpcsharp_server_cancel_all_calls;
+            this.grpcsharp_server_shutdown_and_notify_callback = DllImportsFromSharedLib_x86_dll.grpcsharp_server_shutdown_and_notify_callback;
+            this.grpcsharp_server_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_server_destroy;
+            this.grpcsharp_call_auth_context = DllImportsFromSharedLib_x86_dll.grpcsharp_call_auth_context;
+            this.grpcsharp_auth_context_peer_identity_property_name = DllImportsFromSharedLib_x86_dll.grpcsharp_auth_context_peer_identity_property_name;
+            this.grpcsharp_auth_context_property_iterator = DllImportsFromSharedLib_x86_dll.grpcsharp_auth_context_property_iterator;
+            this.grpcsharp_auth_property_iterator_next = DllImportsFromSharedLib_x86_dll.grpcsharp_auth_property_iterator_next;
+            this.grpcsharp_auth_context_release = DllImportsFromSharedLib_x86_dll.grpcsharp_auth_context_release;
+            this.grpcsharp_slice_buffer_create = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_create;
+            this.grpcsharp_slice_buffer_adjust_tail_space = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_adjust_tail_space;
+            this.grpcsharp_slice_buffer_slice_count = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_slice_count;
+            this.grpcsharp_slice_buffer_slice_peek = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_slice_peek;
+            this.grpcsharp_slice_buffer_reset_and_unref = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_reset_and_unref;
+            this.grpcsharp_slice_buffer_destroy = DllImportsFromSharedLib_x86_dll.grpcsharp_slice_buffer_destroy;
+            this.gprsharp_now = DllImportsFromSharedLib_x86_dll.gprsharp_now;
+            this.gprsharp_inf_future = DllImportsFromSharedLib_x86_dll.gprsharp_inf_future;
+            this.gprsharp_inf_past = DllImportsFromSharedLib_x86_dll.gprsharp_inf_past;
+            this.gprsharp_convert_clock_type = DllImportsFromSharedLib_x86_dll.gprsharp_convert_clock_type;
+            this.gprsharp_sizeof_timespec = DllImportsFromSharedLib_x86_dll.gprsharp_sizeof_timespec;
+            this.grpcsharp_test_callback = DllImportsFromSharedLib_x86_dll.grpcsharp_test_callback;
+            this.grpcsharp_test_nop = DllImportsFromSharedLib_x86_dll.grpcsharp_test_nop;
+            this.grpcsharp_test_override_method = DllImportsFromSharedLib_x86_dll.grpcsharp_test_override_method;
+            this.grpcsharp_test_call_start_unary_echo = DllImportsFromSharedLib_x86_dll.grpcsharp_test_call_start_unary_echo;
+        }
+
+        public NativeMethods(DllImportsFromSharedLib_x64_dll unusedInstance)
+        {
+            this.grpcsharp_init = DllImportsFromSharedLib_x64_dll.grpcsharp_init;
+            this.grpcsharp_shutdown = DllImportsFromSharedLib_x64_dll.grpcsharp_shutdown;
+            this.grpcsharp_version_string = DllImportsFromSharedLib_x64_dll.grpcsharp_version_string;
+            this.grpcsharp_batch_context_create = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_create;
+            this.grpcsharp_batch_context_recv_initial_metadata = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_initial_metadata;
+            this.grpcsharp_batch_context_recv_message_length = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_message_length;
+            this.grpcsharp_batch_context_recv_message_next_slice_peek = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_message_next_slice_peek;
+            this.grpcsharp_batch_context_recv_status_on_client_status = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_status_on_client_status;
+            this.grpcsharp_batch_context_recv_status_on_client_details = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_status_on_client_details;
+            this.grpcsharp_batch_context_recv_status_on_client_error_string = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_status_on_client_error_string;
+            this.grpcsharp_batch_context_recv_status_on_client_trailing_metadata = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_status_on_client_trailing_metadata;
+            this.grpcsharp_batch_context_recv_close_on_server_cancelled = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_recv_close_on_server_cancelled;
+            this.grpcsharp_batch_context_reset = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_reset;
+            this.grpcsharp_batch_context_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_batch_context_destroy;
+            this.grpcsharp_request_call_context_create = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_create;
+            this.grpcsharp_request_call_context_call = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_call;
+            this.grpcsharp_request_call_context_method = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_method;
+            this.grpcsharp_request_call_context_host = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_host;
+            this.grpcsharp_request_call_context_deadline = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_deadline;
+            this.grpcsharp_request_call_context_request_metadata = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_request_metadata;
+            this.grpcsharp_request_call_context_reset = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_reset;
+            this.grpcsharp_request_call_context_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_request_call_context_destroy;
+            this.grpcsharp_composite_call_credentials_create = DllImportsFromSharedLib_x64_dll.grpcsharp_composite_call_credentials_create;
+            this.grpcsharp_call_credentials_release = DllImportsFromSharedLib_x64_dll.grpcsharp_call_credentials_release;
+            this.grpcsharp_call_cancel = DllImportsFromSharedLib_x64_dll.grpcsharp_call_cancel;
+            this.grpcsharp_call_cancel_with_status = DllImportsFromSharedLib_x64_dll.grpcsharp_call_cancel_with_status;
+            this.grpcsharp_call_start_unary = DllImportsFromSharedLib_x64_dll.grpcsharp_call_start_unary;
+            this.grpcsharp_call_start_client_streaming = DllImportsFromSharedLib_x64_dll.grpcsharp_call_start_client_streaming;
+            this.grpcsharp_call_start_server_streaming = DllImportsFromSharedLib_x64_dll.grpcsharp_call_start_server_streaming;
+            this.grpcsharp_call_start_duplex_streaming = DllImportsFromSharedLib_x64_dll.grpcsharp_call_start_duplex_streaming;
+            this.grpcsharp_call_send_message = DllImportsFromSharedLib_x64_dll.grpcsharp_call_send_message;
+            this.grpcsharp_call_send_close_from_client = DllImportsFromSharedLib_x64_dll.grpcsharp_call_send_close_from_client;
+            this.grpcsharp_call_send_status_from_server = DllImportsFromSharedLib_x64_dll.grpcsharp_call_send_status_from_server;
+            this.grpcsharp_call_recv_message = DllImportsFromSharedLib_x64_dll.grpcsharp_call_recv_message;
+            this.grpcsharp_call_recv_initial_metadata = DllImportsFromSharedLib_x64_dll.grpcsharp_call_recv_initial_metadata;
+            this.grpcsharp_call_start_serverside = DllImportsFromSharedLib_x64_dll.grpcsharp_call_start_serverside;
+            this.grpcsharp_call_send_initial_metadata = DllImportsFromSharedLib_x64_dll.grpcsharp_call_send_initial_metadata;
+            this.grpcsharp_call_set_credentials = DllImportsFromSharedLib_x64_dll.grpcsharp_call_set_credentials;
+            this.grpcsharp_call_get_peer = DllImportsFromSharedLib_x64_dll.grpcsharp_call_get_peer;
+            this.grpcsharp_call_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_call_destroy;
+            this.grpcsharp_channel_args_create = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_args_create;
+            this.grpcsharp_channel_args_set_string = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_args_set_string;
+            this.grpcsharp_channel_args_set_integer = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_args_set_integer;
+            this.grpcsharp_channel_args_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_args_destroy;
+            this.grpcsharp_override_default_ssl_roots = DllImportsFromSharedLib_x64_dll.grpcsharp_override_default_ssl_roots;
+            this.grpcsharp_ssl_credentials_create = DllImportsFromSharedLib_x64_dll.grpcsharp_ssl_credentials_create;
+            this.grpcsharp_composite_channel_credentials_create = DllImportsFromSharedLib_x64_dll.grpcsharp_composite_channel_credentials_create;
+            this.grpcsharp_channel_credentials_release = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_credentials_release;
+            this.grpcsharp_insecure_channel_create = DllImportsFromSharedLib_x64_dll.grpcsharp_insecure_channel_create;
+            this.grpcsharp_secure_channel_create = DllImportsFromSharedLib_x64_dll.grpcsharp_secure_channel_create;
+            this.grpcsharp_channel_create_call = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_create_call;
+            this.grpcsharp_channel_check_connectivity_state = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_check_connectivity_state;
+            this.grpcsharp_channel_watch_connectivity_state = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_watch_connectivity_state;
+            this.grpcsharp_channel_get_target = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_get_target;
+            this.grpcsharp_channel_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_channel_destroy;
+            this.grpcsharp_sizeof_grpc_event = DllImportsFromSharedLib_x64_dll.grpcsharp_sizeof_grpc_event;
+            this.grpcsharp_completion_queue_create_async = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_create_async;
+            this.grpcsharp_completion_queue_create_sync = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_create_sync;
+            this.grpcsharp_completion_queue_shutdown = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_shutdown;
+            this.grpcsharp_completion_queue_next = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_next;
+            this.grpcsharp_completion_queue_pluck = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_pluck;
+            this.grpcsharp_completion_queue_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_completion_queue_destroy;
+            this.gprsharp_free = DllImportsFromSharedLib_x64_dll.gprsharp_free;
+            this.grpcsharp_metadata_array_create = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_create;
+            this.grpcsharp_metadata_array_add = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_add;
+            this.grpcsharp_metadata_array_count = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_count;
+            this.grpcsharp_metadata_array_get_key = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_get_key;
+            this.grpcsharp_metadata_array_get_value = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_get_value;
+            this.grpcsharp_metadata_array_destroy_full = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_array_destroy_full;
+            this.grpcsharp_redirect_log = DllImportsFromSharedLib_x64_dll.grpcsharp_redirect_log;
+            this.grpcsharp_native_callback_dispatcher_init = DllImportsFromSharedLib_x64_dll.grpcsharp_native_callback_dispatcher_init;
+            this.grpcsharp_metadata_credentials_create_from_plugin = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_credentials_create_from_plugin;
+            this.grpcsharp_metadata_credentials_notify_from_plugin = DllImportsFromSharedLib_x64_dll.grpcsharp_metadata_credentials_notify_from_plugin;
+            this.grpcsharp_ssl_server_credentials_create = DllImportsFromSharedLib_x64_dll.grpcsharp_ssl_server_credentials_create;
+            this.grpcsharp_server_credentials_release = DllImportsFromSharedLib_x64_dll.grpcsharp_server_credentials_release;
+            this.grpcsharp_server_create = DllImportsFromSharedLib_x64_dll.grpcsharp_server_create;
+            this.grpcsharp_server_register_completion_queue = DllImportsFromSharedLib_x64_dll.grpcsharp_server_register_completion_queue;
+            this.grpcsharp_server_add_insecure_http2_port = DllImportsFromSharedLib_x64_dll.grpcsharp_server_add_insecure_http2_port;
+            this.grpcsharp_server_add_secure_http2_port = DllImportsFromSharedLib_x64_dll.grpcsharp_server_add_secure_http2_port;
+            this.grpcsharp_server_start = DllImportsFromSharedLib_x64_dll.grpcsharp_server_start;
+            this.grpcsharp_server_request_call = DllImportsFromSharedLib_x64_dll.grpcsharp_server_request_call;
+            this.grpcsharp_server_cancel_all_calls = DllImportsFromSharedLib_x64_dll.grpcsharp_server_cancel_all_calls;
+            this.grpcsharp_server_shutdown_and_notify_callback = DllImportsFromSharedLib_x64_dll.grpcsharp_server_shutdown_and_notify_callback;
+            this.grpcsharp_server_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_server_destroy;
+            this.grpcsharp_call_auth_context = DllImportsFromSharedLib_x64_dll.grpcsharp_call_auth_context;
+            this.grpcsharp_auth_context_peer_identity_property_name = DllImportsFromSharedLib_x64_dll.grpcsharp_auth_context_peer_identity_property_name;
+            this.grpcsharp_auth_context_property_iterator = DllImportsFromSharedLib_x64_dll.grpcsharp_auth_context_property_iterator;
+            this.grpcsharp_auth_property_iterator_next = DllImportsFromSharedLib_x64_dll.grpcsharp_auth_property_iterator_next;
+            this.grpcsharp_auth_context_release = DllImportsFromSharedLib_x64_dll.grpcsharp_auth_context_release;
+            this.grpcsharp_slice_buffer_create = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_create;
+            this.grpcsharp_slice_buffer_adjust_tail_space = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_adjust_tail_space;
+            this.grpcsharp_slice_buffer_slice_count = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_slice_count;
+            this.grpcsharp_slice_buffer_slice_peek = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_slice_peek;
+            this.grpcsharp_slice_buffer_reset_and_unref = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_reset_and_unref;
+            this.grpcsharp_slice_buffer_destroy = DllImportsFromSharedLib_x64_dll.grpcsharp_slice_buffer_destroy;
+            this.gprsharp_now = DllImportsFromSharedLib_x64_dll.gprsharp_now;
+            this.gprsharp_inf_future = DllImportsFromSharedLib_x64_dll.gprsharp_inf_future;
+            this.gprsharp_inf_past = DllImportsFromSharedLib_x64_dll.gprsharp_inf_past;
+            this.gprsharp_convert_clock_type = DllImportsFromSharedLib_x64_dll.gprsharp_convert_clock_type;
+            this.gprsharp_sizeof_timespec = DllImportsFromSharedLib_x64_dll.gprsharp_sizeof_timespec;
+            this.grpcsharp_test_callback = DllImportsFromSharedLib_x64_dll.grpcsharp_test_callback;
+            this.grpcsharp_test_nop = DllImportsFromSharedLib_x64_dll.grpcsharp_test_nop;
+            this.grpcsharp_test_override_method = DllImportsFromSharedLib_x64_dll.grpcsharp_test_override_method;
+            this.grpcsharp_test_call_start_unary_echo = DllImportsFromSharedLib_x64_dll.grpcsharp_test_call_start_unary_echo;
+        }
+
         /// <summary>
         /// Delegate types for all published native methods. Declared under inner class to prevent scope pollution.
         /// </summary>
@@ -897,7 +1329,7 @@ namespace Grpc.Core.Internal
         }
         
         /// <summary>
-        /// grpc_csharp_ext used a shared library (e.g on Unity Standalone and Android).
+        /// grpc_csharp_ext used as a shared library (e.g on Unity Standalone and Android).
         /// </summary>
         internal class DllImportsFromSharedLib
         {
@@ -1215,5 +1647,1285 @@ namespace Grpc.Core.Internal
             [DllImport(ImportName)]
             public static extern CallError grpcsharp_test_call_start_unary_echo(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
         }
+
+        /// <summary>
+        /// grpc_csharp_ext used as a shared library (with x86 suffix)
+        /// </summary>
+        internal class DllImportsFromSharedLib_x86
+        {
+            private const string ImportName = "grpc_csharp_ext.x86";
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_init();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_shutdown();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_version_string();
+            
+            [DllImport(ImportName)]
+            public static extern BatchContextSafeHandle grpcsharp_batch_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_initial_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_message_next_slice_peek(BatchContextSafeHandle ctx, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx, out UIntPtr detailsLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_error_string(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_trailing_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_reset(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern RequestCallContextSafeHandle grpcsharp_request_call_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_request_call_context_call(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_method(RequestCallContextSafeHandle ctx, out UIntPtr methodLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_host(RequestCallContextSafeHandle ctx, out UIntPtr hostLength);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec grpcsharp_request_call_context_deadline(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_request_metadata(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_reset(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_composite_call_credentials_create(CallCredentialsSafeHandle creds1, CallCredentialsSafeHandle creds2);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_unary(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_client_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_server_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_duplex_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_message(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, int sendEmptyInitialMetadata);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_close_from_client(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_status_from_server(CallSafeHandle call, BatchContextSafeHandle ctx, StatusCode statusCode, IntPtr statusMessage, UIntPtr statusMessageLen, MetadataArraySafeHandle metadataArray, int sendEmptyInitialMetadata, SliceBufferSafeHandle optionalSendBuffer, WriteFlags writeFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_message(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_serverside(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_set_credentials(CallSafeHandle call, CallCredentialsSafeHandle credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_destroy(IntPtr call);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelArgsSafeHandle grpcsharp_channel_args_create(UIntPtr numArgs);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_string(ChannelArgsSafeHandle args, UIntPtr index, string key, string value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_integer(ChannelArgsSafeHandle args, UIntPtr index, string key, int value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_destroy(IntPtr args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_override_default_ssl_roots(string pemRootCerts);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_ssl_credentials_create(string pemRootCerts, string keyCertPairCertChain, string keyCertPairPrivateKey, IntPtr verifyPeerCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_composite_channel_credentials_create(ChannelCredentialsSafeHandle channelCreds, CallCredentialsSafeHandle callCreds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_secure_channel_create(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelState grpcsharp_channel_check_connectivity_state(ChannelSafeHandle channel, int tryToConnect);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_watch_connectivity_state(ChannelSafeHandle channel, ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_channel_get_target(ChannelSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_destroy(IntPtr channel);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_sizeof_grpc_event();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_async();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_sync();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_shutdown(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_next(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_destroy(IntPtr cq);
+            
+            [DllImport(ImportName)]
+            public static extern void gprsharp_free(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern MetadataArraySafeHandle grpcsharp_metadata_array_create(UIntPtr capacity);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_add(MetadataArraySafeHandle array, string key, byte[] value, UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_metadata_array_count(IntPtr metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_key(IntPtr metadataArray, UIntPtr index, out UIntPtr keyLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_value(IntPtr metadataArray, UIntPtr index, out UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_destroy_full(IntPtr array);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_redirect_log(GprLogDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_native_callback_dispatcher_init(NativeCallbackDispatcherCallback dispatcher);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_metadata_credentials_create_from_plugin(IntPtr nativeCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_credentials_notify_from_plugin(IntPtr callbackPtr, IntPtr userData, MetadataArraySafeHandle metadataArray, StatusCode statusCode, string errorDetails);
+            
+            [DllImport(ImportName)]
+            public static extern ServerCredentialsSafeHandle grpcsharp_ssl_server_credentials_create(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray, UIntPtr numKeyCertPairs, SslClientCertificateRequestType clientCertificateRequest);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ServerSafeHandle grpcsharp_server_create(ChannelArgsSafeHandle args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_register_completion_queue(ServerSafeHandle server, CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_insecure_http2_port(ServerSafeHandle server, string addr);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr, ServerCredentialsSafeHandle creds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_start(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_server_request_call(ServerSafeHandle server, CompletionQueueSafeHandle cq, RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_cancel_all_calls(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_shutdown_and_notify_callback(ServerSafeHandle server, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_destroy(IntPtr server);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle grpcsharp_call_auth_context(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_context_peer_identity_property_name(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle.NativeAuthPropertyIterator grpcsharp_auth_context_property_iterator(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_property_iterator_next(ref AuthContextSafeHandle.NativeAuthPropertyIterator iterator);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_auth_context_release(IntPtr authContext);
+            
+            [DllImport(ImportName)]
+            public static extern SliceBufferSafeHandle grpcsharp_slice_buffer_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_slice_buffer_adjust_tail_space(SliceBufferSafeHandle sliceBuffer, UIntPtr availableTailSpace, UIntPtr requestedTailSpace);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_slice_buffer_slice_count(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_slice_peek(SliceBufferSafeHandle sliceBuffer, UIntPtr index, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_reset_and_unref(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_destroy(IntPtr sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_now(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_future(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_past(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_convert_clock_type(Timespec t, ClockType targetClock);
+            
+            [DllImport(ImportName)]
+            public static extern int gprsharp_sizeof_timespec();
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_callback([MarshalAs(UnmanagedType.FunctionPtr)] NativeCallbackTestDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_test_nop(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_test_override_method(string methodName, string variant);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_call_start_unary_echo(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+        }
+
+        /// <summary>
+        /// grpc_csharp_ext used as a shared library (with x64 suffix)
+        /// </summary>
+        internal class DllImportsFromSharedLib_x64
+        {
+            private const string ImportName = "grpc_csharp_ext.x64";
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_init();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_shutdown();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_version_string();
+            
+            [DllImport(ImportName)]
+            public static extern BatchContextSafeHandle grpcsharp_batch_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_initial_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_message_next_slice_peek(BatchContextSafeHandle ctx, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx, out UIntPtr detailsLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_error_string(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_trailing_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_reset(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern RequestCallContextSafeHandle grpcsharp_request_call_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_request_call_context_call(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_method(RequestCallContextSafeHandle ctx, out UIntPtr methodLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_host(RequestCallContextSafeHandle ctx, out UIntPtr hostLength);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec grpcsharp_request_call_context_deadline(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_request_metadata(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_reset(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_composite_call_credentials_create(CallCredentialsSafeHandle creds1, CallCredentialsSafeHandle creds2);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_unary(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_client_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_server_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_duplex_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_message(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, int sendEmptyInitialMetadata);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_close_from_client(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_status_from_server(CallSafeHandle call, BatchContextSafeHandle ctx, StatusCode statusCode, IntPtr statusMessage, UIntPtr statusMessageLen, MetadataArraySafeHandle metadataArray, int sendEmptyInitialMetadata, SliceBufferSafeHandle optionalSendBuffer, WriteFlags writeFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_message(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_serverside(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_set_credentials(CallSafeHandle call, CallCredentialsSafeHandle credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_destroy(IntPtr call);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelArgsSafeHandle grpcsharp_channel_args_create(UIntPtr numArgs);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_string(ChannelArgsSafeHandle args, UIntPtr index, string key, string value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_integer(ChannelArgsSafeHandle args, UIntPtr index, string key, int value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_destroy(IntPtr args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_override_default_ssl_roots(string pemRootCerts);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_ssl_credentials_create(string pemRootCerts, string keyCertPairCertChain, string keyCertPairPrivateKey, IntPtr verifyPeerCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_composite_channel_credentials_create(ChannelCredentialsSafeHandle channelCreds, CallCredentialsSafeHandle callCreds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_secure_channel_create(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelState grpcsharp_channel_check_connectivity_state(ChannelSafeHandle channel, int tryToConnect);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_watch_connectivity_state(ChannelSafeHandle channel, ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_channel_get_target(ChannelSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_destroy(IntPtr channel);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_sizeof_grpc_event();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_async();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_sync();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_shutdown(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_next(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_destroy(IntPtr cq);
+            
+            [DllImport(ImportName)]
+            public static extern void gprsharp_free(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern MetadataArraySafeHandle grpcsharp_metadata_array_create(UIntPtr capacity);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_add(MetadataArraySafeHandle array, string key, byte[] value, UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_metadata_array_count(IntPtr metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_key(IntPtr metadataArray, UIntPtr index, out UIntPtr keyLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_value(IntPtr metadataArray, UIntPtr index, out UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_destroy_full(IntPtr array);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_redirect_log(GprLogDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_native_callback_dispatcher_init(NativeCallbackDispatcherCallback dispatcher);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_metadata_credentials_create_from_plugin(IntPtr nativeCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_credentials_notify_from_plugin(IntPtr callbackPtr, IntPtr userData, MetadataArraySafeHandle metadataArray, StatusCode statusCode, string errorDetails);
+            
+            [DllImport(ImportName)]
+            public static extern ServerCredentialsSafeHandle grpcsharp_ssl_server_credentials_create(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray, UIntPtr numKeyCertPairs, SslClientCertificateRequestType clientCertificateRequest);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ServerSafeHandle grpcsharp_server_create(ChannelArgsSafeHandle args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_register_completion_queue(ServerSafeHandle server, CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_insecure_http2_port(ServerSafeHandle server, string addr);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr, ServerCredentialsSafeHandle creds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_start(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_server_request_call(ServerSafeHandle server, CompletionQueueSafeHandle cq, RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_cancel_all_calls(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_shutdown_and_notify_callback(ServerSafeHandle server, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_destroy(IntPtr server);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle grpcsharp_call_auth_context(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_context_peer_identity_property_name(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle.NativeAuthPropertyIterator grpcsharp_auth_context_property_iterator(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_property_iterator_next(ref AuthContextSafeHandle.NativeAuthPropertyIterator iterator);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_auth_context_release(IntPtr authContext);
+            
+            [DllImport(ImportName)]
+            public static extern SliceBufferSafeHandle grpcsharp_slice_buffer_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_slice_buffer_adjust_tail_space(SliceBufferSafeHandle sliceBuffer, UIntPtr availableTailSpace, UIntPtr requestedTailSpace);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_slice_buffer_slice_count(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_slice_peek(SliceBufferSafeHandle sliceBuffer, UIntPtr index, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_reset_and_unref(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_destroy(IntPtr sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_now(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_future(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_past(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_convert_clock_type(Timespec t, ClockType targetClock);
+            
+            [DllImport(ImportName)]
+            public static extern int gprsharp_sizeof_timespec();
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_callback([MarshalAs(UnmanagedType.FunctionPtr)] NativeCallbackTestDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_test_nop(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_test_override_method(string methodName, string variant);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_call_start_unary_echo(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+        }
+
+        /// <summary>
+        /// grpc_csharp_ext used as a shared library (with x86.dll suffix)
+        /// </summary>
+        internal class DllImportsFromSharedLib_x86_dll
+        {
+            private const string ImportName = "grpc_csharp_ext.x86.dll";
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_init();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_shutdown();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_version_string();
+            
+            [DllImport(ImportName)]
+            public static extern BatchContextSafeHandle grpcsharp_batch_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_initial_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_message_next_slice_peek(BatchContextSafeHandle ctx, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx, out UIntPtr detailsLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_error_string(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_trailing_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_reset(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern RequestCallContextSafeHandle grpcsharp_request_call_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_request_call_context_call(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_method(RequestCallContextSafeHandle ctx, out UIntPtr methodLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_host(RequestCallContextSafeHandle ctx, out UIntPtr hostLength);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec grpcsharp_request_call_context_deadline(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_request_metadata(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_reset(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_composite_call_credentials_create(CallCredentialsSafeHandle creds1, CallCredentialsSafeHandle creds2);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_unary(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_client_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_server_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_duplex_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_message(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, int sendEmptyInitialMetadata);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_close_from_client(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_status_from_server(CallSafeHandle call, BatchContextSafeHandle ctx, StatusCode statusCode, IntPtr statusMessage, UIntPtr statusMessageLen, MetadataArraySafeHandle metadataArray, int sendEmptyInitialMetadata, SliceBufferSafeHandle optionalSendBuffer, WriteFlags writeFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_message(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_serverside(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_set_credentials(CallSafeHandle call, CallCredentialsSafeHandle credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_destroy(IntPtr call);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelArgsSafeHandle grpcsharp_channel_args_create(UIntPtr numArgs);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_string(ChannelArgsSafeHandle args, UIntPtr index, string key, string value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_integer(ChannelArgsSafeHandle args, UIntPtr index, string key, int value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_destroy(IntPtr args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_override_default_ssl_roots(string pemRootCerts);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_ssl_credentials_create(string pemRootCerts, string keyCertPairCertChain, string keyCertPairPrivateKey, IntPtr verifyPeerCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_composite_channel_credentials_create(ChannelCredentialsSafeHandle channelCreds, CallCredentialsSafeHandle callCreds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_secure_channel_create(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelState grpcsharp_channel_check_connectivity_state(ChannelSafeHandle channel, int tryToConnect);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_watch_connectivity_state(ChannelSafeHandle channel, ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_channel_get_target(ChannelSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_destroy(IntPtr channel);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_sizeof_grpc_event();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_async();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_sync();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_shutdown(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_next(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_destroy(IntPtr cq);
+            
+            [DllImport(ImportName)]
+            public static extern void gprsharp_free(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern MetadataArraySafeHandle grpcsharp_metadata_array_create(UIntPtr capacity);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_add(MetadataArraySafeHandle array, string key, byte[] value, UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_metadata_array_count(IntPtr metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_key(IntPtr metadataArray, UIntPtr index, out UIntPtr keyLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_value(IntPtr metadataArray, UIntPtr index, out UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_destroy_full(IntPtr array);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_redirect_log(GprLogDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_native_callback_dispatcher_init(NativeCallbackDispatcherCallback dispatcher);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_metadata_credentials_create_from_plugin(IntPtr nativeCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_credentials_notify_from_plugin(IntPtr callbackPtr, IntPtr userData, MetadataArraySafeHandle metadataArray, StatusCode statusCode, string errorDetails);
+            
+            [DllImport(ImportName)]
+            public static extern ServerCredentialsSafeHandle grpcsharp_ssl_server_credentials_create(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray, UIntPtr numKeyCertPairs, SslClientCertificateRequestType clientCertificateRequest);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ServerSafeHandle grpcsharp_server_create(ChannelArgsSafeHandle args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_register_completion_queue(ServerSafeHandle server, CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_insecure_http2_port(ServerSafeHandle server, string addr);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr, ServerCredentialsSafeHandle creds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_start(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_server_request_call(ServerSafeHandle server, CompletionQueueSafeHandle cq, RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_cancel_all_calls(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_shutdown_and_notify_callback(ServerSafeHandle server, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_destroy(IntPtr server);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle grpcsharp_call_auth_context(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_context_peer_identity_property_name(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle.NativeAuthPropertyIterator grpcsharp_auth_context_property_iterator(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_property_iterator_next(ref AuthContextSafeHandle.NativeAuthPropertyIterator iterator);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_auth_context_release(IntPtr authContext);
+            
+            [DllImport(ImportName)]
+            public static extern SliceBufferSafeHandle grpcsharp_slice_buffer_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_slice_buffer_adjust_tail_space(SliceBufferSafeHandle sliceBuffer, UIntPtr availableTailSpace, UIntPtr requestedTailSpace);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_slice_buffer_slice_count(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_slice_peek(SliceBufferSafeHandle sliceBuffer, UIntPtr index, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_reset_and_unref(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_destroy(IntPtr sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_now(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_future(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_past(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_convert_clock_type(Timespec t, ClockType targetClock);
+            
+            [DllImport(ImportName)]
+            public static extern int gprsharp_sizeof_timespec();
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_callback([MarshalAs(UnmanagedType.FunctionPtr)] NativeCallbackTestDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_test_nop(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_test_override_method(string methodName, string variant);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_call_start_unary_echo(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+        }
+
+        /// <summary>
+        /// grpc_csharp_ext used as a shared library (with x64.dll suffix)
+        /// </summary>
+        internal class DllImportsFromSharedLib_x64_dll
+        {
+            private const string ImportName = "grpc_csharp_ext.x64.dll";
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_init();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_shutdown();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_version_string();
+            
+            [DllImport(ImportName)]
+            public static extern BatchContextSafeHandle grpcsharp_batch_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_initial_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_message_next_slice_peek(BatchContextSafeHandle ctx, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx, out UIntPtr detailsLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_error_string(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_batch_context_recv_status_on_client_trailing_metadata(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_reset(BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_batch_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern RequestCallContextSafeHandle grpcsharp_request_call_context_create();
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_request_call_context_call(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_method(RequestCallContextSafeHandle ctx, out UIntPtr methodLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_host(RequestCallContextSafeHandle ctx, out UIntPtr hostLength);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec grpcsharp_request_call_context_deadline(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_request_call_context_request_metadata(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_reset(RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_request_call_context_destroy(IntPtr ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_composite_call_credentials_create(CallCredentialsSafeHandle creds1, CallCredentialsSafeHandle creds2);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_unary(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_client_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_server_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_duplex_streaming(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_message(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, int sendEmptyInitialMetadata);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_close_from_client(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_status_from_server(CallSafeHandle call, BatchContextSafeHandle ctx, StatusCode statusCode, IntPtr statusMessage, UIntPtr statusMessageLen, MetadataArraySafeHandle metadataArray, int sendEmptyInitialMetadata, SliceBufferSafeHandle optionalSendBuffer, WriteFlags writeFlags);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_message(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_recv_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_start_serverside(CallSafeHandle call, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_send_initial_metadata(CallSafeHandle call, BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_call_set_credentials(CallSafeHandle call, CallCredentialsSafeHandle credentials);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_call_destroy(IntPtr call);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelArgsSafeHandle grpcsharp_channel_args_create(UIntPtr numArgs);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_string(ChannelArgsSafeHandle args, UIntPtr index, string key, string value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_set_integer(ChannelArgsSafeHandle args, UIntPtr index, string key, int value);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_args_destroy(IntPtr args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_override_default_ssl_roots(string pemRootCerts);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_ssl_credentials_create(string pemRootCerts, string keyCertPairCertChain, string keyCertPairPrivateKey, IntPtr verifyPeerCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelCredentialsSafeHandle grpcsharp_composite_channel_credentials_create(ChannelCredentialsSafeHandle channelCreds, CallCredentialsSafeHandle callCreds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelSafeHandle grpcsharp_secure_channel_create(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs);
+            
+            [DllImport(ImportName)]
+            public static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
+            
+            [DllImport(ImportName)]
+            public static extern ChannelState grpcsharp_channel_check_connectivity_state(ChannelSafeHandle channel, int tryToConnect);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_watch_connectivity_state(ChannelSafeHandle channel, ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern CStringSafeHandle grpcsharp_channel_get_target(ChannelSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_channel_destroy(IntPtr channel);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_sizeof_grpc_event();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_async();
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create_sync();
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_shutdown(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_next(CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern CompletionQueueEvent grpcsharp_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_completion_queue_destroy(IntPtr cq);
+            
+            [DllImport(ImportName)]
+            public static extern void gprsharp_free(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern MetadataArraySafeHandle grpcsharp_metadata_array_create(UIntPtr capacity);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_add(MetadataArraySafeHandle array, string key, byte[] value, UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_metadata_array_count(IntPtr metadataArray);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_key(IntPtr metadataArray, UIntPtr index, out UIntPtr keyLength);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_metadata_array_get_value(IntPtr metadataArray, UIntPtr index, out UIntPtr valueLength);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_array_destroy_full(IntPtr array);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_redirect_log(GprLogDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_native_callback_dispatcher_init(NativeCallbackDispatcherCallback dispatcher);
+            
+            [DllImport(ImportName)]
+            public static extern CallCredentialsSafeHandle grpcsharp_metadata_credentials_create_from_plugin(IntPtr nativeCallbackTag);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_metadata_credentials_notify_from_plugin(IntPtr callbackPtr, IntPtr userData, MetadataArraySafeHandle metadataArray, StatusCode statusCode, string errorDetails);
+            
+            [DllImport(ImportName)]
+            public static extern ServerCredentialsSafeHandle grpcsharp_ssl_server_credentials_create(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray, UIntPtr numKeyCertPairs, SslClientCertificateRequestType clientCertificateRequest);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_credentials_release(IntPtr credentials);
+            
+            [DllImport(ImportName)]
+            public static extern ServerSafeHandle grpcsharp_server_create(ChannelArgsSafeHandle args);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_register_completion_queue(ServerSafeHandle server, CompletionQueueSafeHandle cq);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_insecure_http2_port(ServerSafeHandle server, string addr);
+            
+            [DllImport(ImportName)]
+            public static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr, ServerCredentialsSafeHandle creds);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_start(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_server_request_call(ServerSafeHandle server, CompletionQueueSafeHandle cq, RequestCallContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_cancel_all_calls(ServerSafeHandle server);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_shutdown_and_notify_callback(ServerSafeHandle server, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_server_destroy(IntPtr server);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle grpcsharp_call_auth_context(CallSafeHandle call);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_context_peer_identity_property_name(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern AuthContextSafeHandle.NativeAuthPropertyIterator grpcsharp_auth_context_property_iterator(AuthContextSafeHandle authContext);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_auth_property_iterator_next(ref AuthContextSafeHandle.NativeAuthPropertyIterator iterator);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_auth_context_release(IntPtr authContext);
+            
+            [DllImport(ImportName)]
+            public static extern SliceBufferSafeHandle grpcsharp_slice_buffer_create();
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_slice_buffer_adjust_tail_space(SliceBufferSafeHandle sliceBuffer, UIntPtr availableTailSpace, UIntPtr requestedTailSpace);
+            
+            [DllImport(ImportName)]
+            public static extern UIntPtr grpcsharp_slice_buffer_slice_count(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_slice_peek(SliceBufferSafeHandle sliceBuffer, UIntPtr index, out UIntPtr sliceLen, out IntPtr sliceDataPtr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_reset_and_unref(SliceBufferSafeHandle sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_slice_buffer_destroy(IntPtr sliceBuffer);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_now(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_future(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_inf_past(ClockType clockType);
+            
+            [DllImport(ImportName)]
+            public static extern Timespec gprsharp_convert_clock_type(Timespec t, ClockType targetClock);
+            
+            [DllImport(ImportName)]
+            public static extern int gprsharp_sizeof_timespec();
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_callback([MarshalAs(UnmanagedType.FunctionPtr)] NativeCallbackTestDelegate callback);
+            
+            [DllImport(ImportName)]
+            public static extern IntPtr grpcsharp_test_nop(IntPtr ptr);
+            
+            [DllImport(ImportName)]
+            public static extern void grpcsharp_test_override_method(string methodName, string variant);
+            
+            [DllImport(ImportName)]
+            public static extern CallError grpcsharp_test_call_start_unary_echo(CallSafeHandle call, BatchContextSafeHandle ctx, SliceBufferSafeHandle sendBuffer, WriteFlags writeFlags, MetadataArraySafeHandle metadataArray, CallFlags metadataFlags);
+        }
     }
 }
diff --git a/templates/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs.template b/templates/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs.template
index 4e6913803dd..4feba1097da 100644
--- a/templates/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs.template
+++ b/templates/src/csharp/Grpc.Core/Internal/NativeMethods.Generated.cs.template
@@ -63,6 +63,34 @@
               % endfor
           }
 
+          public NativeMethods(DllImportsFromSharedLib_x86 unusedInstance)
+          {
+              % for method in get_native_methods():
+              this.${method['name']} = DllImportsFromSharedLib_x86.${method['name']};
+              % endfor
+          }
+
+          public NativeMethods(DllImportsFromSharedLib_x64 unusedInstance)
+          {
+              % for method in get_native_methods():
+              this.${method['name']} = DllImportsFromSharedLib_x64.${method['name']};
+              % endfor
+          }
+
+          public NativeMethods(DllImportsFromSharedLib_x86_dll unusedInstance)
+          {
+              % for method in get_native_methods():
+              this.${method['name']} = DllImportsFromSharedLib_x86_dll.${method['name']};
+              % endfor
+          }
+
+          public NativeMethods(DllImportsFromSharedLib_x64_dll unusedInstance)
+          {
+              % for method in get_native_methods():
+              this.${method['name']} = DllImportsFromSharedLib_x64_dll.${method['name']};
+              % endfor
+          }
+
           /// <summary>
           /// Delegate types for all published native methods. Declared under inner class to prevent scope pollution.
           /// </summary>
@@ -87,7 +115,7 @@
           }
           
           /// <summary>
-          /// grpc_csharp_ext used a shared library (e.g on Unity Standalone and Android).
+          /// grpc_csharp_ext used as a shared library (e.g on Unity Standalone and Android).
           /// </summary>
           internal class DllImportsFromSharedLib
           {
@@ -98,5 +126,57 @@
               public static extern ${method['returntype']} ${method['name']}(${method['params']});
               % endfor
           }
+
+          /// <summary>
+          /// grpc_csharp_ext used as a shared library (with x86 suffix)
+          /// </summary>
+          internal class DllImportsFromSharedLib_x86
+          {
+              private const string ImportName = "grpc_csharp_ext.x86";
+              % for method in get_native_methods():
+              
+              [DllImport(ImportName)]
+              public static extern ${method['returntype']} ${method['name']}(${method['params']});
+              % endfor
+          }
+
+          /// <summary>
+          /// grpc_csharp_ext used as a shared library (with x64 suffix)
+          /// </summary>
+          internal class DllImportsFromSharedLib_x64
+          {
+              private const string ImportName = "grpc_csharp_ext.x64";
+              % for method in get_native_methods():
+              
+              [DllImport(ImportName)]
+              public static extern ${method['returntype']} ${method['name']}(${method['params']});
+              % endfor
+          }
+
+          /// <summary>
+          /// grpc_csharp_ext used as a shared library (with x86.dll suffix)
+          /// </summary>
+          internal class DllImportsFromSharedLib_x86_dll
+          {
+              private const string ImportName = "grpc_csharp_ext.x86.dll";
+              % for method in get_native_methods():
+              
+              [DllImport(ImportName)]
+              public static extern ${method['returntype']} ${method['name']}(${method['params']});
+              % endfor
+          }
+
+          /// <summary>
+          /// grpc_csharp_ext used as a shared library (with x64.dll suffix)
+          /// </summary>
+          internal class DllImportsFromSharedLib_x64_dll
+          {
+              private const string ImportName = "grpc_csharp_ext.x64.dll";
+              % for method in get_native_methods():
+              
+              [DllImport(ImportName)]
+              public static extern ${method['returntype']} ${method['name']}(${method['params']});
+              % endfor
+          }
       }
   }
diff --git a/test/distrib/csharp/run_distrib_test_dotnetcli.sh b/test/distrib/csharp/run_distrib_test_dotnetcli.sh
index 97bef26d399..69257edde43 100755
--- a/test/distrib/csharp/run_distrib_test_dotnetcli.sh
+++ b/test/distrib/csharp/run_distrib_test_dotnetcli.sh
@@ -68,9 +68,14 @@ if [ "${SKIP_NET50_DISTRIBTEST}" != "1" ]
 then
   dotnet publish -f net5.0 DistribTestDotNet.csproj
 
+  dotnet publish -r linux-x64 -f net5.0 DistribTestDotNet.csproj -p:PublishSingleFile=true --self-contained true --output net5_singlefile_publish
+
   # .NET Core target after dotnet build
   dotnet exec bin/Debug/net5.0/DistribTestDotNet.dll
 
   # .NET Core target after dotnet publish
   dotnet exec bin/Debug/net5.0/publish/DistribTestDotNet.dll
+
+  # binary generated by the single file publish
+  ./net5_singlefile_publish/DistribTestDotNet
 fi