.gitignore

@@ -18,6 +18,7 @@ vendor/
 # IDE
 .idea
 .vscode
+.vs
 
 # coverage
 coverage.txt

FrostFS.SDK.sln

@@ -1,7 +1,7 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # 
 VisualStudioVersion = 17.5.002.0
-MinimumVisualStudioVersion = 
+
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FrostFS.SDK.ClientV2", "src\FrostFS.SDK.ClientV2\FrostFS.SDK.ClientV2.csproj", "{50D8F61F-C302-4AC9-8D8A-AB0B8C0988C3}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FrostFS.SDK.Cryptography", "src\FrostFS.SDK.Cryptography\FrostFS.SDK.Cryptography.csproj", "{3D804F4A-B0B2-47A5-B006-BE447BE64B50}"
@@ -10,6 +10,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FrostFS.SDK.ModelsV2", "src
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FrostFS.SDK.ProtosV2", "src\FrostFS.SDK.ProtosV2\FrostFS.SDK.ProtosV2.csproj", "{5012EF96-9C9E-4E77-BC78-B4111EE54107}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FrostFS.SDK.Tests", "src\FrostFS.SDK.Tests\FrostFS.SDK.Tests.csproj", "{8FDA7E0D-9C75-4874-988E-6592CD28F76C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -32,8 +34,9 @@ Global
 		{5012EF96-9C9E-4E77-BC78-B4111EE54107}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{5012EF96-9C9E-4E77-BC78-B4111EE54107}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5012EF96-9C9E-4E77-BC78-B4111EE54107}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
+		{8FDA7E0D-9C75-4874-988E-6592CD28F76C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8FDA7E0D-9C75-4874-988E-6592CD28F76C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8FDA7E0D-9C75-4874-988E-6592CD28F76C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8FDA7E0D-9C75-4874-988E-6592CD28F76C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

src/FrostFS.SDK.ClientV2/Client.cs

@@ -1,93 +1,223 @@
-using System;
-using System.Collections.Generic;
-using System.Security.Cryptography;
-using System.Text;
-using System.Threading.Tasks;
-using FrostFS.Container;
+using FrostFS.Container;
 using FrostFS.Netmap;
 using FrostFS.Object;
 using FrostFS.SDK.ClientV2.Interfaces;
 using FrostFS.SDK.Cryptography;
 using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Netmap;
 using FrostFS.Session;
 using Grpc.Core;
 using Grpc.Net.Client;
-using static FrostFS.Netmap.NetworkConfig.Types;
+using Microsoft.Extensions.Options;
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading.Tasks;
 using Version = FrostFS.SDK.ModelsV2.Version;
 
 namespace FrostFS.SDK.ClientV2;
 
-public partial class Client: IFrostFSClient
+public class Client : IFrostFSClient
 {
-    private GrpcChannel? _channel;
-    private readonly ECDsa _key;
-    public readonly OwnerId OwnerId;
-    public readonly Version Version = new(2, 13);
+    private bool isDisposed;
 
-    private readonly Dictionary<string, ulong> NetworkSettings = [];
+    internal ClientEnvironment ClientCtx { get; set; }
 
-    private ContainerService.ContainerServiceClient? _containerServiceClient;
-    private NetmapService.NetmapServiceClient? _netmapServiceClient;
-    private ObjectService.ObjectServiceClient? _objectServiceClient;
-    private SessionService.SessionServiceClient? _sessionServiceClient;
-
-    public static IFrostFSClient GetInstance(string key, string host)
+    public static IFrostFSClient GetInstance(IOptions<ClientSettings> clientOptions, GrpcChannelOptions channelOptions)
     {
-        return new Client(key, host);
+        return new Client(clientOptions, channelOptions);
     }
 
-    private Client(string key, string host)
+    /// <summary>
+    /// For test only. Provide custom implementation or mock object to inject required logic instead of internal gRPC client.
+    /// </summary>
+    /// <param name="clientOptions">Global setting for client</param>
+    /// <param name="channelOptions">Setting for gRPC cjannel</param>
+    /// <param name="containerService">ContainerService.ContainerServiceClient implementation</param>
+    /// <param name="netmapService">Netmap.NetmapService.NetmapServiceClient implementation</param>
+    /// <param name="sessionService">Session.SessionService.SessionServiceClient implementation</param>
+    /// <param name="objectService">Object.ObjectService.ObjectServiceClient implementation</param>
+    /// <returns></returns>
+    public static IFrostFSClient GetTestInstance(
+        IOptions<ClientSettings> clientOptions,
+        GrpcChannelOptions? channelOptions,
+        NetmapService.NetmapServiceClient netmapService,
+        SessionService.SessionServiceClient sessionService,
+        ContainerService.ContainerServiceClient containerService,
+        ObjectService.ObjectServiceClient objectService)
     {
-        // TODO: Развязать клиент и реализацию GRPC
-        _key = key.LoadWif();
-        OwnerId = OwnerId.FromKey(_key);
-        InitGrpcChannel(host);
-        InitContainerClient();
-        InitNetmapClient();
-        InitObjectClient();
-        InitSessionClient();
+        return new Client(clientOptions, channelOptions, containerService, netmapService, sessionService, objectService);
+    }
+
+    private Client(
+        IOptions<ClientSettings> settings,
+        GrpcChannelOptions? channelOptions,
+        ContainerService.ContainerServiceClient containerService,
+        NetmapService.NetmapServiceClient netmapService,
+        SessionService.SessionServiceClient sessionService,
+        ObjectService.ObjectServiceClient objectService)
+    {
+        var ecdsaKey = settings.Value.Key.LoadWif();
+        OwnerId.FromKey(ecdsaKey);
+
+        ClientCtx = new ClientEnvironment(
+           key: ecdsaKey,
+           owner: OwnerId.FromKey(ecdsaKey),
+           channel: InitGrpcChannel(settings.Value.Host, channelOptions),
+           version: new Version(2, 13));
+
+        ClientCtx.ContainerService = new ContainerServiceProvider(containerService, ClientCtx);
+        ClientCtx.NetmapService = new NetmapServiceProvider(netmapService, ClientCtx);
+        ClientCtx.SessionService = new SessionServiceProvider(sessionService, ClientCtx);
+        ClientCtx.ObjectService = new ObjectServiceProvider(objectService, ClientCtx);
+    }
+
+    private Client(IOptions<ClientSettings> options, GrpcChannelOptions channelOptions)
+    {
+        var clientSettings = (options?.Value) ?? throw new ArgumentException("Options must be initialized");
+
+        clientSettings.Validate();
+
+        var ecdsaKey = clientSettings.Key.LoadWif();
+        
+        var channel = InitGrpcChannel(clientSettings.Host, channelOptions);
+
+        ClientCtx = new ClientEnvironment(
+            key: ecdsaKey,
+            owner: OwnerId.FromKey(ecdsaKey),
+            channel: channel,
+            version: new Version(2, 13));
+
+        ClientCtx.ContainerService = new ContainerServiceProvider(new ContainerService.ContainerServiceClient(channel), ClientCtx);
+        ClientCtx.NetmapService = new NetmapServiceProvider(new NetmapService.NetmapServiceClient(channel), ClientCtx);
+        ClientCtx.SessionService = new SessionServiceProvider(new SessionService.SessionServiceClient(channel), ClientCtx);
+        ClientCtx.ObjectService = new ObjectServiceProvider(new ObjectService.ObjectServiceClient(channel), ClientCtx);
+
         CheckFrostFsVersionSupport();
-
-        InitNetworkInfoAsync();
     }
 
-    private async void InitNetworkInfoAsync()
+    public void Dispose()
     {
-        var info = await GetNetworkInfoAsync();
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
 
-        foreach (var param in info.Body.NetworkInfo.NetworkConfig.Parameters)
+    protected virtual void Dispose(bool disposing)
+    {
+        if (disposing && !isDisposed)
         {
-            SetNetworksParam(param);
+            ClientCtx.Dispose();
+            isDisposed = true;
         }
     }
 
-    private void SetNetworksParam(Parameter param)
-    { 
-        var key = Encoding.UTF8.GetString(param.Key.ToByteArray());
+    public GrpcChannel Channel => ClientCtx.Channel;
 
-        var encodedValue = param.Value.ToByteArray();
-
-        ulong val = 0;
-        for (var i = encodedValue.Length - 1; i >= 0; i--)
-        {
-            val = (val << 8) + encodedValue[i];
-	    }
-
-        NetworkSettings.Add(key, val);
-    }
-    
-    private async void CheckFrostFsVersionSupport()
+    public Task<ModelsV2.Container> GetContainerAsync(ContainerId containerId, Context? ctx = null)
     {
-        var localNodeInfo = await GetLocalNodeInfoAsync();
-        if (!localNodeInfo.Version.IsSupported(Version))
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ContainerService!.GetContainerAsync(containerId, ctx!);
+    }
+
+    public IAsyncEnumerable<ContainerId> ListContainersAsync(Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);      
+        return ClientCtx.ContainerService!.ListContainersAsync(ctx!);
+    }
+
+    public Task<ContainerId> CreateContainerAsync(ModelsV2.Container container, Context? ctx = null)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ContainerService!.CreateContainerAsync(container, ctx!);
+    }
+
+    public Task DeleteContainerAsync(ContainerId containerId, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ContainerService!.DeleteContainerAsync(containerId, ctx!);
+    }
+
+    public Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.NetmapService!.GetNetmapSnapshotAsync(ctx!);
+    }
+
+    public Task<ModelsV2.Netmap.NodeInfo> GetNodeInfoAsync(Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.NetmapService!.GetLocalNodeInfoAsync(ctx!);
+    }
+
+    public Task<ObjectHeader> GetObjectHeadAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.GetObjectHeadAsync(containerId, objectId, ctx!);
+    }
+
+    public Task<ModelsV2.Object> GetObjectAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.GetObjectAsync(containerId, objectId, ctx!);
+    }
+
+    public Task<ObjectId> PutObjectAsync(PutObjectParameters putObjectParameters, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.PutObjectAsync(putObjectParameters, ctx!);
+    }
+
+    public Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object obj, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.PutSingleObjectAsync(obj, ctx!);
+    }
+
+    public Task DeleteObjectAsync(ContainerId containerId, ObjectId objectId, Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.DeleteObjectAsync(containerId, objectId, ctx!);
+    }
+
+    public IAsyncEnumerable<ObjectId> SearchObjectsAsync(
+        ContainerId containerId, 
+        IEnumerable<ObjectFilter> filters,
+        Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        return ClientCtx.ObjectService!.SearchObjectsAsync(containerId, filters, ctx!);
+    }
+
+    public ObjectId CalculateObjectId(ObjectHeader header)
+    { 
+        return ClientCtx.ObjectService!.CalculateObjectId(header);
+    }
+
+    private async void CheckFrostFsVersionSupport(Context? ctx = default)
+    {
+        ValidateEnvironment(ref ctx);
+        var localNodeInfo = await ClientCtx.NetmapService!.GetLocalNodeInfoAsync(ctx!);
+      
+        if (!localNodeInfo.Version.IsSupported(ClientCtx.Version))
         {
             var msg = $"FrostFS {localNodeInfo.Version} is not supported.";
             Console.WriteLine(msg);
             throw new ApplicationException(msg);
         }
     }
-    
-    private void InitGrpcChannel(string host)
+
+    private void ValidateEnvironment(ref Context? ctx)
+    {
+        if (isDisposed)
+            throw new Exception("Client is disposed.");
+
+        if (ClientCtx == null || !ClientCtx.Initialized)
+            throw new Exception("Client is not initialized.");
+
+        ctx ??= new Context();
+    }
+
+    private static GrpcChannel InitGrpcChannel(string host, GrpcChannelOptions? channelOptions)
     {
         Uri uri;
         try
@@ -97,49 +227,25 @@ public partial class Client: IFrostFSClient
         catch (UriFormatException e)
         {
             var msg = $"Host '{host}' has invalid format. Error: {e.Message}";
-            Console.WriteLine(msg);
             throw new ArgumentException(msg);
         }
 
-        ChannelCredentials grpcCredentials;
-        switch (uri.Scheme)
+        ChannelCredentials grpcCredentials = uri.Scheme switch
         {
-            case "https":
-                grpcCredentials = ChannelCredentials.SecureSsl;
-                break;
-            case "http":
-                grpcCredentials = ChannelCredentials.Insecure;
-                break;
-            default:
-                var msg = $"Host '{host}' has invalid URI scheme: '{uri.Scheme}'.";
-                Console.WriteLine(msg);
-                throw new ArgumentException(msg);
+            "https" => ChannelCredentials.SecureSsl,
+            "http" => ChannelCredentials.Insecure,
+            _ => throw new ArgumentException($"Host '{host}' has invalid URI scheme: '{uri.Scheme}'.")
+        };
+
+        if (channelOptions != null)
+        {
+            return GrpcChannel.ForAddress(uri, channelOptions);
         }
-
-        _channel = GrpcChannel.ForAddress(uri, new GrpcChannelOptions
-         {
-             Credentials = grpcCredentials,
-             HttpHandler = new System.Net.Http.HttpClientHandler()
-         });
-    }
-
-    private void InitContainerClient()
-    {
-        _containerServiceClient = new ContainerService.ContainerServiceClient(_channel);
-    }
-
-    private void InitNetmapClient()
-    {
-        _netmapServiceClient = new NetmapService.NetmapServiceClient(_channel);
-    }
-
-    private void InitObjectClient()
-    {
-        _objectServiceClient = new ObjectService.ObjectServiceClient(_channel);
-    }
-
-    private void InitSessionClient()
-    {
-        _sessionServiceClient = new SessionService.SessionServiceClient(_channel);
+         
+        return GrpcChannel.ForAddress(uri, new GrpcChannelOptions
+        {
+            Credentials = grpcCredentials,
+            HttpHandler = new HttpClientHandler()
+        });
     }
 }

src/FrostFS.SDK.ClientV2/FrostFS.SDK.ClientV2.csproj

@@ -6,9 +6,14 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+	<PropertyGroup>
+		<EnableNETAnalyzers>true</EnableNETAnalyzers>
+	</PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
-    <PackageReference Include="Moq.AutoMock" Version="3.5.0" />
+    <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2" />
+    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="8.0.1" />
   </ItemGroup>
 
   <ItemGroup>

src/FrostFS.SDK.ClientV2/Interfaces/IFrostFSClient.cs

@@ -1,34 +1,41 @@
+using System;
 using System.Collections.Generic;
-using System.IO;
-using System.Threading;
 using System.Threading.Tasks;
 
 using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Netmap;
+using Grpc.Net.Client;
 
 namespace FrostFS.SDK.ClientV2.Interfaces;
 
-public interface IFrostFSClient
+public interface IFrostFSClient : IDisposable
 {
-    Task<ModelsV2.Container> GetContainerAsync(ContainerId containerId);
+    Task<ModelsV2.Container> GetContainerAsync(ContainerId containerId, Context? context = default);
 
-    IAsyncEnumerable<ContainerId> ListContainersAsync();
+    IAsyncEnumerable<ContainerId> ListContainersAsync(Context? context = default);
 
-    Task<ContainerId> CreateContainerAsync(ModelsV2.Container container);
+    Task<ContainerId> CreateContainerAsync(ModelsV2.Container container, Context? context = default);
 
-    Task DeleteContainerAsync(ContainerId containerId);
+    Task DeleteContainerAsync(ContainerId containerId, Context? context = default);
 
-    Task<ObjectHeader> GetObjectHeadAsync(ContainerId containerId, ObjectId objectId);
+    Task<ObjectHeader> GetObjectHeadAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
 
+    Task<ModelsV2.Object> GetObjectAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
 
-    Task<ModelsV2.Object> GetObjectAsync(ContainerId containerId, ObjectId objectId);
+    Task<ObjectId> PutObjectAsync(PutObjectParameters putObjectParameters, Context? context = default);
+    
+    Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object obj, Context? context = default);
 
-    Task<ObjectId> PutObjectAsync(ObjectHeader header, Stream payload, CancellationToken cancellationToken = default);
+    Task DeleteObjectAsync(ContainerId containerId, ObjectId objectId, Context? context = default);
 
-    Task<ObjectId> PutObjectAsync(ObjectHeader header, byte[] payload, CancellationToken cancellationToken = default);
+    IAsyncEnumerable<ObjectId> SearchObjectsAsync(ContainerId cid, IEnumerable<ObjectFilter> filters, Context? context = default);
 
-    Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object obj, CancellationToken cancellationToken = default);
+    Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context? context = default);
 
-    Task DeleteObjectAsync(ContainerId containerId, ObjectId objectId);
+    Task<NodeInfo> GetNodeInfoAsync(Context? context = default);
+
+    ObjectId CalculateObjectId(ObjectHeader header);
+
+    GrpcChannel Channel { get; }
+}
 
-    IAsyncEnumerable<ObjectId> SearchObjectsAsync(ContainerId cid, params ObjectFilter[] filters);    
-}

src/FrostFS.SDK.ClientV2/Mappers/Container.cs

@@ -22,19 +22,15 @@ public static class ContainerMapper
 
     public static ModelsV2.Container ToModel(this Container.Container container)
     {
-        var basicAclName = Enum.GetName(typeof(BasicAcl), container.BasicAcl);
-        if (basicAclName is null)
-        {
+        if (!Enum.IsDefined(typeof(BasicAcl),(int)container.BasicAcl))
             throw new ArgumentException($"Unknown BasicACL rule. Value: '{container.BasicAcl}'.");
-        }
+        
+        BasicAcl acl = (BasicAcl)container.BasicAcl;
 
-        return new ModelsV2.Container(
-            (BasicAcl)Enum.Parse(typeof(BasicAcl), basicAclName),
-            container.PlacementPolicy.ToModel()
-        )
+        return new ModelsV2.Container(acl, container.PlacementPolicy.ToModel())
         {
             Nonce = container.Nonce.ToUuid(),
             Version = container.Version.ToModel()
         };
     }
-}
+}

src/FrostFS.SDK.ClientV2/Mappers/GRPC/Netmap/NodeInfo.cs

@@ -1,24 +0,0 @@
-using System;
-
-using FrostFS.Netmap;
-using FrostFS.SDK.ModelsV2.Enums;
-using NodeInfo = FrostFS.SDK.ModelsV2.Netmap.NodeInfo;
-
-namespace FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
-
-public static class NodeInfoMapper
-{
-    public static NodeInfo ToModel(this LocalNodeInfoResponse.Types.Body nodeInfo)
-    {
-        var nodeStateName = Enum.GetName(typeof(NodeState), nodeInfo.NodeInfo.State);
-        if (nodeStateName is null)
-        {
-            throw new ArgumentException($"Unknown NodeState. Value: '{nodeInfo.NodeInfo.State}'.");
-        }
-        return new NodeInfo
-        {
-            State = (NodeState)Enum.Parse(typeof(NodeState), nodeStateName),
-            Version = nodeInfo.Version.ToModel()
-        };
-    }
-}

src/FrostFS.SDK.ClientV2/Mappers/Netmap/Netmap.cs

@@ -0,0 +1,15 @@
+using System.Linq;
+using FrostFS.Netmap;
+using FrostFS.SDK.ModelsV2.Netmap;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+
+public static class NetmapMapper
+{
+    public static NetmapSnapshot ToModel(this NetmapSnapshotResponse netmap)
+    {
+        return new NetmapSnapshot(
+            netmap.Body.Netmap.Epoch,
+            netmap.Body.Netmap.Nodes.Select(n => n.ToModel(netmap.MetaHeader.Version)).ToArray());
+    }
+}

src/FrostFS.SDK.ClientV2/Mappers/Netmap/NodeInfo.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Linq;
+using FrostFS.Netmap;
+using FrostFS.SDK.ModelsV2.Enums;
+using NodeInfo = FrostFS.SDK.ModelsV2.Netmap.NodeInfo;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+
+public static class NodeInfoMapper
+{
+    public static NodeInfo ToModel(this LocalNodeInfoResponse.Types.Body node)
+    {
+        return node.NodeInfo.ToModel(node.Version);
+    }
+
+    public static NodeInfo ToModel(this FrostFS.Netmap.NodeInfo nodeInfo, Refs.Version version)
+    {
+        NodeState state = nodeInfo.State switch
+        {
+            FrostFS.Netmap.NodeInfo.Types.State.Unspecified => NodeState.Unspecified,
+            FrostFS.Netmap.NodeInfo.Types.State.Online => NodeState.Online,
+            FrostFS.Netmap.NodeInfo.Types.State.Offline => NodeState.Offline,
+            FrostFS.Netmap.NodeInfo.Types.State.Maintenance => NodeState.Maintenance,
+            _ => throw new ArgumentException($"Unknown NodeState. Value: '{nodeInfo.State}'.")
+        };
+
+        return new NodeInfo(
+            version: version.ToModel(),
+            state: state,
+            addresses: [.. nodeInfo.Addresses],
+            attributes: nodeInfo.Attributes.ToDictionary(n => n.Key, n => n.Value),
+            publicKey: nodeInfo.PublicKey.ToByteArray()
+        );
+    }
+}

src/FrostFS.SDK.ClientV2/Mappers/Object/Object.cs

@@ -0,0 +1,14 @@
+using FrostFS.SDK.ModelsV2;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+public static class ObjectMapper
+{
+    public static ModelsV2.Object ToModel(this Object.Object obj)
+    {
+        return new ModelsV2.Object(
+            ObjectId.FromHash(obj.ObjectId.Value.ToByteArray()),
+            obj.Header.ToModel(),
+            obj.Payload.ToByteArray());
+    }    
+}

src/FrostFS.SDK.ClientV2/Mappers/Object/ObjectAttributeMapper.cs

@@ -0,0 +1,21 @@
+using FrostFS.Object;
+using FrostFS.SDK.ModelsV2;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+public static class ObjectAttributeMapper
+{
+    public static Header.Types.Attribute ToGrpcMessage(this ObjectAttribute attribute)
+    {
+        return new Header.Types.Attribute
+        {
+            Key = attribute.Key,
+            Value = attribute.Value
+        };
+    }
+
+    public static ObjectAttribute ToModel(this Header.Types.Attribute attribute)
+    {
+        return new ObjectAttribute(attribute.Key, attribute.Value);
+    }
+}

src/FrostFS.SDK.ClientV2/Mappers/Object/ObjectFilterMapper.cs

@@ -0,0 +1,30 @@
+using System;
+using FrostFS.Object;
+using FrostFS.SDK.ModelsV2;
+using MatchType = FrostFS.Object.MatchType;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+public static class ObjectFilterMapper
+{
+    public static SearchRequest.Types.Body.Types.Filter ToGrpcMessage(this ObjectFilter filter)
+    {
+        var objMatchTypeName = filter.MatchType switch
+        {
+            ModelsV2.Enums.ObjectMatchType.Unspecified => MatchType.Unspecified,
+            ModelsV2.Enums.ObjectMatchType.Equals => MatchType.StringEqual,
+            ModelsV2.Enums.ObjectMatchType.NotEquals => MatchType.StringNotEqual,
+            ModelsV2.Enums.ObjectMatchType.KeyAbsent => MatchType.NotPresent,
+            ModelsV2.Enums.ObjectMatchType.StartsWith => MatchType.CommonPrefix,
+
+            _ => throw new ArgumentException($"Unknown MatchType. Value: '{filter.MatchType}'.")
+        };
+
+        return new SearchRequest.Types.Body.Types.Filter
+        {
+            MatchType = objMatchTypeName,
+            Key = filter.Key,
+            Value = filter.Value
+        };
+    }    
+}

src/FrostFS.SDK.ClientV2/Mappers/Object/ObjectHeaderMapper.cs

@@ -4,52 +4,10 @@ using FrostFS.Object;
 using FrostFS.SDK.Cryptography;
 using FrostFS.SDK.ModelsV2;
 using Google.Protobuf;
-using MatchType = FrostFS.Object.MatchType;
 using ObjectType = FrostFS.Object.ObjectType;
 
 namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
 
-public static class ObjectAttributeMapper
-{
-    public static Header.Types.Attribute ToGrpcMessage(this ObjectAttribute attribute)
-    {
-        return new Header.Types.Attribute
-        {
-            Key = attribute.Key,
-            Value = attribute.Value
-        };
-    }
-
-    public static ObjectAttribute ToModel(this Header.Types.Attribute attribute)
-    {
-        return new ObjectAttribute(attribute.Key, attribute.Value);
-    }
-}
-
-public static class ObjectFilterMapper
-{
-    public static SearchRequest.Types.Body.Types.Filter ToGrpcMessage(this ObjectFilter filter)
-    {
-        var objMatchTypeName = filter.MatchType switch
-        {
-            ModelsV2.Enums.ObjectMatchType.Unspecified => MatchType.Unspecified,
-            ModelsV2.Enums.ObjectMatchType.Equals => MatchType.StringEqual,
-            ModelsV2.Enums.ObjectMatchType.NotEquals => MatchType.StringNotEqual,
-            ModelsV2.Enums.ObjectMatchType.KeyAbsent => MatchType.NotPresent,
-            ModelsV2.Enums.ObjectMatchType.StartsWith => MatchType.CommonPrefix,
-
-            _ => throw new ArgumentException($"Unknown MatchType. Value: '{filter.MatchType}'.")
-        };
-
-        return new SearchRequest.Types.Body.Types.Filter
-        {
-            MatchType = objMatchTypeName,
-            Key = filter.Key,
-            Value = filter.Value
-        };
-    }    
-}
-
 public static class ObjectHeaderMapper
 {
     public static Header ToGrpcMessage(this ObjectHeader header)
@@ -116,7 +74,7 @@ public static class ObjectHeaderMapper
 
         if (header.Split != null)
         {
-            model.Split = new Split(SplitId.CrateFromBinary(header.Split.SplitId.ToByteArray()))
+            model.Split = new Split(SplitId.CreateFromBinary(header.Split.SplitId.ToByteArray()))
             {
                 Parent = header.Split.Parent?.ToModel(),
                 ParentHeader = header.Split.ParentHeader?.ToModel(),
@@ -130,37 +88,3 @@ public static class ObjectHeaderMapper
         return model;
     }
 }
-
-public static class ObjectMapper
-{
-    public static ModelsV2.Object ToModel(this Object.Object obj)
-    {
-        return new ModelsV2.Object()
-        {
-            Header = obj.Header.ToModel(),
-            ObjectId = ObjectId.FromHash(obj.ObjectId.Value.ToByteArray()),
-            Payload = obj.Payload.ToByteArray()
-        };
-    }    
-}
-
-public static class SignatureMapper
-{
-    public static Refs.Signature ToGrpcMessage(this Signature signature)
-    {
-        var scheme = signature.Scheme switch
-        {
-            SignatureScheme.EcdsaRfc6979Sha256 => Refs.SignatureScheme.EcdsaRfc6979Sha256,
-            SignatureScheme.EcdsaRfc6979Sha256WalletConnect => Refs.SignatureScheme.EcdsaRfc6979Sha256WalletConnect,
-            SignatureScheme.EcdsaSha512 => Refs.SignatureScheme.EcdsaSha512,
-            _ => throw new ArgumentException(message: $"Unexpected enum value: {signature.Scheme}", paramName: nameof(signature.Scheme))
-        };
-
-        return new Refs.Signature
-        {
-            Key = ByteString.CopyFrom(signature.Key),
-            Scheme = scheme,
-            Sign = ByteString.CopyFrom(signature.Sign)
-        };
-    }
-}

src/FrostFS.SDK.ClientV2/Mappers/Session/Session.cs

@@ -0,0 +1,25 @@
+ 
+using System;
+using Google.Protobuf;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+public static class SessionMapper
+{
+    internal static string SerializeSessionToken(this Session.SessionToken token)
+    {
+        byte[] bytes = new byte[token.CalculateSize()];
+        CodedOutputStream stream = new(bytes);
+        token.WriteTo(stream);
+
+        return Convert.ToBase64String(bytes);
+    }
+
+    internal static Session.SessionToken DeserializeSessionToken(this byte[] bytes)
+    {
+        Session.SessionToken token = new();
+        token.MergeFrom(bytes);
+
+        return token;
+    }
+}

src/FrostFS.SDK.ClientV2/Mappers/SignatureMapper.cs

@@ -0,0 +1,26 @@
+using System;
+using FrostFS.SDK.ModelsV2;
+using Google.Protobuf;
+
+namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+public static class SignatureMapper
+{
+    public static Refs.Signature ToGrpcMessage(this Signature signature)
+    {
+        var scheme = signature.Scheme switch
+        {
+            SignatureScheme.EcdsaRfc6979Sha256 => Refs.SignatureScheme.EcdsaRfc6979Sha256,
+            SignatureScheme.EcdsaRfc6979Sha256WalletConnect => Refs.SignatureScheme.EcdsaRfc6979Sha256WalletConnect,
+            SignatureScheme.EcdsaSha512 => Refs.SignatureScheme.EcdsaSha512,
+            _ => throw new ArgumentException(message: $"Unexpected enum value: {signature.Scheme}", paramName: nameof(signature.Scheme))
+        };
+
+        return new Refs.Signature
+        {
+            Key = ByteString.CopyFrom(signature.Key),
+            Scheme = scheme,
+            Sign = ByteString.CopyFrom(signature.Sign)
+        };
+    }
+}

src/FrostFS.SDK.ClientV2/Services/Container.cs

@@ -1,85 +0,0 @@
-using FrostFS.Container;
-using FrostFS.SDK.ClientV2.Mappers.GRPC;
-using FrostFS.SDK.Cryptography;
-using FrostFS.SDK.ModelsV2;
-using System.Collections.Generic;
-using System.Threading.Tasks;
-
-namespace FrostFS.SDK.ClientV2;
-
-public partial class Client
-{
-    public async Task<ModelsV2.Container> GetContainerAsync(ContainerId cid)
-    {
-        var request = new GetRequest
-        {
-            Body = new GetRequest.Types.Body
-            {
-                ContainerId = cid.ToGrpcMessage()
-            },
-        };
-
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _containerServiceClient.GetAsync(request);
-        Verifier.CheckResponse(response);
-        return response.Body.Container.ToModel();
-    }
-
-    public async IAsyncEnumerable<ContainerId> ListContainersAsync()
-    {
-        var request = new ListRequest
-        {
-            Body = new ListRequest.Types.Body
-            {
-                OwnerId = OwnerId.ToGrpcMessage()
-            }
-        };
-        
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _containerServiceClient.ListAsync(request);
-        Verifier.CheckResponse(response);
-        foreach (var cid in response.Body.ContainerIds)
-        {
-            yield return new ContainerId(Base58.Encode(cid.Value.ToByteArray()));
-        }
-    }
-
-    public async Task<ContainerId> CreateContainerAsync(ModelsV2.Container container)
-    {
-        var cntnr = container.ToGrpcMessage(); 
-        cntnr.OwnerId = OwnerId.ToGrpcMessage();
-        cntnr.Version = Version.ToGrpcMessage();
-        
-        var request = new PutRequest
-        {
-            Body = new PutRequest.Types.Body
-            {
-                Container = cntnr,
-                Signature = _key.SignRFC6979(cntnr),
-            }
-        };
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _containerServiceClient.PutAsync(request);
-        Verifier.CheckResponse(response);
-        return new ContainerId(Base58.Encode(response.Body.ContainerId.Value.ToByteArray()));
-    }
-
-    public async Task DeleteContainerAsync(ContainerId cid)
-    {
-        var request = new DeleteRequest
-        {
-            Body = new DeleteRequest.Types.Body
-            {
-                ContainerId = cid.ToGrpcMessage(),
-                Signature = _key.SignRFC6979(cid.ToGrpcMessage().Value)
-            }
-        };
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _containerServiceClient.DeleteAsync(request);
-        Verifier.CheckResponse(response);
-    }
-}

src/FrostFS.SDK.ClientV2/Services/ContainerServiceProvider.cs

@@ -0,0 +1,113 @@
+using System.Threading.Tasks;
+using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.Container;
+
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+using FrostFS.SDK.Cryptography;
+using System.Collections.Generic;
+
+namespace FrostFS.SDK.ClientV2;
+
+internal class ContainerServiceProvider : ContextAccessor
+{
+    private readonly ContainerService.ContainerServiceClient containerServiceClient;
+    
+    internal ContainerServiceProvider(ContainerService.ContainerServiceClient service, ClientEnvironment context)
+        : base(context)
+    {
+        containerServiceClient = service;
+    }
+
+    internal async Task<ModelsV2.Container> GetContainerAsync(ContainerId cid, Context context)
+    {
+        var request = new GetRequest
+        {
+            Body = new GetRequest.Types.Body
+            {
+                ContainerId = cid.ToGrpcMessage()
+            },
+        };
+
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var response = await containerServiceClient.GetAsync(request, null, context.Deadline, context.CancellationToken);
+
+        Verifier.CheckResponse(response);
+
+        return response.Body.Container.ToModel();        
+    }
+
+    internal async IAsyncEnumerable<ContainerId> ListContainersAsync(Context ctx)
+    {
+        var request = new ListRequest
+        {
+            Body = new ListRequest.Types.Body
+            {
+                OwnerId = Context.Owner.ToGrpcMessage()
+            }
+        };
+        
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var response = await containerServiceClient.ListAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+       
+        Verifier.CheckResponse(response);
+       
+        foreach (var cid in response.Body.ContainerIds)
+        {
+            yield return new ContainerId(Base58.Encode(cid.Value.ToByteArray()));
+        }
+    }
+
+    internal async Task<ContainerId> CreateContainerAsync(ModelsV2.Container container, Context ctx)
+    {
+        var grpcContainer = container.ToGrpcMessage(); 
+        grpcContainer.OwnerId = Context.Owner.ToGrpcMessage();
+        grpcContainer.Version = Context.Version.ToGrpcMessage();
+        
+        var request = new PutRequest
+        {
+            Body = new PutRequest.Types.Body
+            {
+                Container = grpcContainer,
+                Signature = Context.Key.SignRFC6979(grpcContainer),
+            }
+        };
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var response = await containerServiceClient.PutAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+
+        //var response = await Context.InvokeAsyncUnaryWithMetrics(() =>
+        //    containerServiceClient.PutAsync(request, null, ctx.Deadline, ctx.CancellationToken),
+        //    nameof(containerServiceClient.PutAsync));
+      
+        Verifier.CheckResponse(response);
+      
+        return new ContainerId(Base58.Encode(response.Body.ContainerId.Value.ToByteArray()));
+    }
+
+    internal async Task DeleteContainerAsync(ContainerId cid, Context ctx)
+    {
+        var request = new DeleteRequest
+        {
+            Body = new DeleteRequest.Types.Body
+            {
+                ContainerId = cid.ToGrpcMessage(),
+                Signature = Context.Key.SignRFC6979(cid.ToGrpcMessage().Value)
+            }
+        };
+    
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var response = await containerServiceClient.DeleteAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+    
+        Verifier.CheckResponse(response);
+    }
+}
+
+

src/FrostFS.SDK.ClientV2/Services/Netmap.cs

@@ -1,38 +0,0 @@
-using System.Threading.Tasks;
-
-using FrostFS.Netmap;
-using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
-
-using NodeInfo = FrostFS.SDK.ModelsV2.Netmap.NodeInfo;
-
-namespace FrostFS.SDK.ClientV2;
-
-public partial class Client
-{
-    public async Task<NodeInfo> GetLocalNodeInfoAsync()
-    {
-        var request = new LocalNodeInfoRequest
-        {
-            Body = new LocalNodeInfoRequest.Types.Body { }
-        };
-
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _netmapServiceClient.LocalNodeInfoAsync(request);
- 
-        return response.Body.ToModel();
-    }
-
-    public async Task<NetworkInfoResponse> GetNetworkInfoAsync()
-    {
-        var request = new NetworkInfoRequest
-        {
-            Body = new NetworkInfoRequest.Types.Body { }
-        };
-
-        request.AddMetaHeader();
-        request.Sign(_key);
- 
-        return await _netmapServiceClient.NetworkInfoAsync(request);
-    }
-}

src/FrostFS.SDK.ClientV2/Services/NetmapServiceProvider.cs

@@ -0,0 +1,132 @@
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FrostFS.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+using NodeInfo = FrostFS.SDK.ModelsV2.Netmap.NodeInfo;
+
+using FrostFS.SDK.ModelsV2.Netmap;
+using static FrostFS.Netmap.NetworkConfig.Types;
+
+namespace FrostFS.SDK.ClientV2;
+
+internal class NetmapServiceProvider : ContextAccessor
+{  
+    private readonly NetmapService.NetmapServiceClient netmapServiceClient;
+    
+    internal NetmapServiceProvider(NetmapService.NetmapServiceClient netmapServiceClient, ClientEnvironment context) 
+        : base(context) 
+    {
+        this.netmapServiceClient = netmapServiceClient;
+    }
+
+    internal async Task<NetworkSettings> GetNetworkSettingsAsync(Context ctx)
+    {
+        if (Context.NetworkSettings != null)
+            return Context.NetworkSettings;
+
+        var info = await GetNetworkInfoAsync(ctx);
+
+        var settings = new NetworkSettings();
+
+        foreach (var param in info.Body.NetworkInfo.NetworkConfig.Parameters)
+        {
+            SetNetworksParam(param, settings);
+        }
+
+        Context.NetworkSettings = settings;
+        
+        return settings;
+    }
+
+    internal async Task<NodeInfo> GetLocalNodeInfoAsync(Context ctx)
+    {
+        var request = new LocalNodeInfoRequest
+        {
+            Body = new LocalNodeInfoRequest.Types.Body { }
+        };
+
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+        
+        var response = await netmapServiceClient.LocalNodeInfoAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+
+        //var response = await Context.InvokeAsyncUnaryWithMetrics(() =>
+        //   netmapServiceClient.LocalNodeInfoAsync(request, null, ctx.Deadline, ctx.CancellationToken),
+        //   nameof(netmapServiceClient.LocalNodeInfoAsync));
+
+        Verifier.CheckResponse(response);
+
+        return response.Body.ToModel();
+    }
+
+    internal async Task<NetworkInfoResponse> GetNetworkInfoAsync(Context ctx)
+    {
+        var request = new NetworkInfoRequest
+        {
+            Body = new NetworkInfoRequest.Types.Body { }
+        };
+
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+ 
+        var response = await netmapServiceClient.NetworkInfoAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+
+        Verifier.CheckResponse(response);
+
+        return response;
+    }
+
+    internal async Task<NetmapSnapshot> GetNetmapSnapshotAsync(Context ctx)
+    {
+        var request = new NetmapSnapshotRequest
+        {
+            Body = new NetmapSnapshotRequest.Types.Body { }
+        };
+
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+ 
+        var response = await netmapServiceClient.NetmapSnapshotAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+
+        Verifier.CheckResponse(response);
+
+        return response.ToModel();
+    }
+
+    private static bool GetBoolValue(byte[] bytes)
+    {
+        return bytes.Any(b => b != 0);
+    }
+
+    private static ulong GetLongValue(byte[] bytes)
+    {
+        ulong val = 0;
+        for (var i = bytes.Length - 1; i >= 0; i--)
+            val = (val << 8) + bytes[i];
+        
+        return val;
+    }
+
+    private static void SetNetworksParam(Parameter param, NetworkSettings settings)
+    { 
+        var key = Encoding.UTF8.GetString(param.Key.ToByteArray());
+
+        var valueBytes = param.Value.ToByteArray();
+        switch (key)
+        {
+            case "ContainerFee": settings.ContainerFee = GetLongValue(valueBytes); break;
+            case "EpochDuration": settings.EpochDuration = GetLongValue(valueBytes); break;
+            case "IRCandidateFee": settings.IRCandidateFee = GetLongValue(valueBytes); break;
+            case "MaxECDataCount": settings.MaxECDataCount = GetLongValue(valueBytes); break;
+            case "MaxECParityCount": settings.MaxECParityCount = GetLongValue(valueBytes); break;
+            case "MaxObjectSize": settings.MaxObjectSize = GetLongValue(valueBytes); break;
+            case "WithdrawalFee": settings.WithdrawalFee = GetLongValue(valueBytes); break;
+            case "HomomorphicHashingDisabled": settings.HomomorphicHashingDisabled = GetBoolValue(valueBytes); break;
+            case "MaintenanceModeAllowed": settings.MaintenanceModeAllowed = GetBoolValue(valueBytes); break;
+            default: settings.UnnamedSettings.Add(key, valueBytes); break;
+        }
+    }
+}
+
+

src/FrostFS.SDK.ClientV2/Services/ObjectReader.cs

@@ -7,20 +7,20 @@ using FrostFS.Object;
 
 namespace FrostFS.SDK.ClientV2;
 
-internal class ObjectReader : IDisposable
+internal class ObjectReader(AsyncServerStreamingCall<GetResponse> call) : IDisposable
 {
-    public AsyncServerStreamingCall<GetResponse> Call { get; set; }
+    public AsyncServerStreamingCall<GetResponse> Call { get; private set; } = call;
 
     public async Task<Object.Object> ReadHeader()
     {
         if (!await Call.ResponseStream.MoveNext())
-            throw new InvalidOperationException("unexpect end of stream");
+            throw new InvalidOperationException("unexpected end of stream");
         
         var response = Call.ResponseStream.Current;
         Verifier.CheckResponse(response);
         
         if (response.Body.ObjectPartCase != GetResponse.Types.Body.ObjectPartOneofCase.Init)
-            throw new InvalidOperationException("unexpect message type");
+            throw new InvalidOperationException("unexpected message type");
         
         return new Object.Object
         {
@@ -38,7 +38,7 @@ internal class ObjectReader : IDisposable
         Verifier.CheckResponse(response);
         
         if (response.Body.ObjectPartCase != GetResponse.Types.Body.ObjectPartOneofCase.Chunk)
-            throw new InvalidOperationException("unexpect message type");
+            throw new InvalidOperationException("unexpected message type");
 
         return response.Body.Chunk.ToByteArray();
     }

src/FrostFS.SDK.ClientV2/Services/ObjectServiceProvider.cs

@@ -1,26 +1,33 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
-using System.Threading.Tasks;
+
 
 using Google.Protobuf;
 
+using System.Threading.Tasks;
+
 using FrostFS.Object;
 using FrostFS.Refs;
 using FrostFS.SDK.ClientV2.Mappers.GRPC;
 using FrostFS.SDK.Cryptography;
 using FrostFS.Session;
-
 using FrostFS.SDK.ModelsV2;
 using FrostFS.SDK.ClientV2.Extensions;
-using System.Threading;
 
 namespace FrostFS.SDK.ClientV2;
 
-public partial class Client
+internal class ObjectServiceProvider : ContextAccessor
 {
-    public async Task<ObjectHeader> GetObjectHeadAsync(ContainerId cid, ObjectId oid)
+    private readonly ObjectService.ObjectServiceClient objectServiceClient;
+    
+    internal ObjectServiceProvider(ObjectService.ObjectServiceClient objectServiceClient, ClientEnvironment context)
+        : base (context)
+    {
+        this.objectServiceClient = objectServiceClient;
+    }
+
+    internal async Task<ObjectHeader> GetObjectHeadAsync(ContainerId cid, ObjectId oid, Context ctx)
     {
         var request = new HeadRequest
         {
@@ -34,18 +41,20 @@ public partial class Client
             }
         };
 
-
         request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _objectServiceClient!.HeadAsync(request);
+        request.Sign(Context.Key);
+
+        var response = await objectServiceClient!.HeadAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+        
         Verifier.CheckResponse(response);
 
         return response.Body.Header.Header.ToModel();
     }
 
-    public async Task<ModelsV2.Object> GetObjectAsync(ContainerId cid, ObjectId oid)
+    internal async Task<ModelsV2.Object> GetObjectAsync(ContainerId cid, ObjectId oid, Context ctx)
     {
-        var sessionToken = await CreateSessionAsync(uint.MaxValue);
+        var sessionToken = await GetOrCreateSession(ctx);
+
         var request = new GetRequest
         {
             Body = new GetRequest.Types.Body
@@ -64,41 +73,131 @@ public partial class Client
             cid.ToGrpcMessage(),
             oid.ToGrpcMessage(),
             ObjectSessionContext.Types.Verb.Get,
-            _key
+            Context.Key
         );
 
-        request.Sign(_key);
-        var obj = await GetObject(request);
+        request.Sign(Context.Key);
+
+        var obj = await GetObject(request, ctx);
 
         return obj.ToModel();
     }
 
-    public async Task<ObjectId> PutObjectAsync(ObjectHeader header, Stream payload, CancellationToken cancellationToken = default)
+    internal Task<ObjectId> PutObjectAsync(PutObjectParameters parameters, Context ctx)
     {
-        return await PutObject(header, payload, cancellationToken);
-    }
-
-    public async Task<ObjectId> PutObjectAsync(ObjectHeader header, byte[] payload, CancellationToken cancellationToken = default)
-    {
-        using var stream = new MemoryStream(payload);
-        return await PutObject(header, stream, cancellationToken);
-    }
-
-    private Task<ObjectId> PutObject(ObjectHeader header, Stream payload, CancellationToken cancellationToken)
-    {
-        if (header.ClientCut)
-            return PutClientCutObject(header, payload, cancellationToken);
+        if (parameters.Header == null)
+            throw new ArgumentException("Value cannot be null", nameof(parameters.Header));
+        
+        if (parameters.Payload == null)
+            throw new ArgumentException("Value cannot be null", nameof(parameters.Payload));
+        
+        if (parameters.ClientCut)
+            return PutClientCutObject(parameters, ctx);
         else 
-            return PutStreamObject(header, payload, cancellationToken);
+            return PutStreamObject(parameters, ctx);
+    }
+   
+    internal async Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object @object, Context ctx)
+    {
+        var sessionToken = await GetOrCreateSession(ctx);
+    
+        var obj = CreateObject(@object);
+
+        var request = new PutSingleRequest
+        {
+            Body = new PutSingleRequest.Types.Body()
+            {
+                 Object = obj 
+            }
+        };
+
+        request.AddMetaHeader();
+        request.AddObjectSessionToken(
+            sessionToken,
+            obj.Header.ContainerId,
+            obj.ObjectId,
+            ObjectSessionContext.Types.Verb.Put,
+            Context.Key
+        );
+
+        request.Sign(Context.Key);
+
+        var response = await objectServiceClient!.PutSingleAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+
+        Verifier.CheckResponse(response);
+        
+        return ObjectId.FromHash(obj.ObjectId.Value.ToByteArray());
     }
 
-    private async Task<ObjectId> PutClientCutObject(ObjectHeader header, Stream payloadStream, CancellationToken cancellationToken)
+    internal ObjectId CalculateObjectId(ObjectHeader header)
     { 
-        ObjectId? objectId = null;
+        var grpcHeader = CreateHeader(header, []);
+
+        return new ObjectID { Value = grpcHeader.Sha256() }.ToModel();        
+    }
+    
+    internal async Task DeleteObjectAsync(ContainerId cid, ObjectId oid, Context ctx)
+    {
+        var request = new DeleteRequest
+        {
+            Body = new DeleteRequest.Types.Body
+            {
+                Address = new Address
+                {
+                    ContainerId = cid.ToGrpcMessage(),
+                    ObjectId = oid.ToGrpcMessage()
+                }
+            }
+        };
+
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var response = await objectServiceClient!.DeleteAsync(request, null, ctx.Deadline, ctx.CancellationToken);
+        
+        Verifier.CheckResponse(response);
+    }
+
+    internal async IAsyncEnumerable<ObjectId> SearchObjectsAsync(
+        ContainerId cid, 
+        IEnumerable<ObjectFilter> filters, 
+        Context ctx)
+    {
+        var request = new SearchRequest
+        {
+            Body = new SearchRequest.Types.Body
+            {
+                ContainerId = cid.ToGrpcMessage(),
+                Filters = { },
+                Version = 1  // TODO: clarify this param
+            }
+        };
+
+        request.Body.Filters.AddRange(filters.Select(f => f.ToGrpcMessage()));
+        
+        request.AddMetaHeader();
+        request.Sign(Context.Key);
+
+        var objectsIds = SearchObjects(request, ctx);
+
+        await foreach (var oid in objectsIds)
+        {
+            yield return ObjectId.FromHash(oid.Value.ToByteArray());
+        }
+    }
+
+    private async Task<ObjectId> PutClientCutObject(PutObjectParameters parameters, Context ctx)
+    {
+        var payloadStream = parameters.Payload!;
+        var header = parameters.Header!;
+
+        ObjectId? objectId;
         List<ObjectId> sentObjectIds = [];
         ModelsV2.Object? currentObject;
 
-        var partSize = (int)NetworkSettings["MaxObjectSize"];
+        var networkSettings = await Context.NetmapService!.GetNetworkSettingsAsync(ctx);
+
+        var partSize = (int)networkSettings.MaxObjectSize;
         var buffer = new byte[partSize];      
 
         var largeObject = new LargeObject(header.ContainerId);
@@ -109,8 +208,6 @@ public partial class Client
    
         while (true)
         {
-            cancellationToken.ThrowIfCancellationRequested(); 
-
             var bytesCount = await payloadStream.ReadAsync(buffer, 0, partSize);
 
             split.Previous = sentObjectIds.LastOrDefault();
@@ -124,37 +221,41 @@ public partial class Client
             if (largeObject.PayloadLength == fullLength)
                 break;
 
-            objectId = await PutSingleObjectAsync(currentObject, cancellationToken);
+            objectId = await PutSingleObjectAsync(currentObject, ctx);
 
             sentObjectIds.Add(objectId!);
         }
 
-        if (sentObjectIds.Any())
+        if (sentObjectIds.Count != 0)
         {
             largeObject.CalculateHash();
 
             currentObject.SetParent(largeObject);
 
-            objectId = await PutSingleObjectAsync(currentObject, cancellationToken);
+            objectId = await PutSingleObjectAsync(currentObject, ctx);
             sentObjectIds.Add(objectId);
 
             var linkObject = new LinkObject(header.ContainerId, split.SplitId, largeObject)
                 .AddChildren(sentObjectIds);
 
-            _ = await PutSingleObjectAsync(linkObject, cancellationToken);
+            _ = await PutSingleObjectAsync(linkObject, ctx);
 
-            return currentObject.GetParentId();
+            return CalculateObjectId(largeObject.Header);
         }
 
-        return await PutSingleObjectAsync(currentObject, cancellationToken);
+        return await PutSingleObjectAsync(currentObject, ctx);
     }
 
-    private async Task<ObjectId> PutStreamObject(ObjectHeader header, Stream payload, CancellationToken cancellationToken)
+    private async Task<ObjectId> PutStreamObject(PutObjectParameters parameters, Context ctx)
     {
-        var sessionToken = await CreateSessionAsync(uint.MaxValue);
+        var payload = parameters.Payload!;
+        var header = parameters.Header!;
+
+        var sessionToken = await GetOrCreateSession(ctx);
+
         var hdr = header.ToGrpcMessage();
-        hdr.OwnerId = OwnerId.ToGrpcMessage();
-        hdr.Version = Version.ToGrpcMessage();
+        hdr.OwnerId = Context.Owner.ToGrpcMessage();
+        hdr.Version = Context.Version.ToGrpcMessage();
 
         var oid = new ObjectID
         {
@@ -178,19 +279,17 @@ public partial class Client
             hdr.ContainerId,
             oid,
             ObjectSessionContext.Types.Verb.Put,
-            _key
+            Context.Key
         );
 
-        request.Sign(_key);
+        request.Sign(Context.Key);
 
-        using var stream = await PutObjectInit(request);
+        using var stream = await PutObjectInit(request, ctx);
         var buffer = new byte[Constants.ObjectChunkSize];
 
         while (true)
         {
-            cancellationToken.ThrowIfCancellationRequested();
-
-            var bufferLength = await payload.ReadAsync(buffer, 0, Constants.ObjectChunkSize);
+            var bufferLength = await payload.ReadAsync(buffer, 0, Constants.ObjectChunkSize, ctx.CancellationToken);
 
             if (bufferLength == 0)
                 break;
@@ -201,7 +300,7 @@ public partial class Client
             };
 
             request.VerifyHeader = null;
-            request.Sign(_key);
+            request.Sign(Context.Key);
             await stream.Write(request);
         }
 
@@ -211,168 +310,11 @@ public partial class Client
         return ObjectId.FromHash(response.Body.ObjectId.Value.ToByteArray());
     }
 
-    public async Task<ObjectId> PutSingleObjectAsync(ModelsV2.Object @object, CancellationToken cancellationToken = default)
+    // TODO: add implementation with stream writer!
+    private async Task<Object.Object> GetObject(GetRequest request, Context ctx)
     {
-        var sessionToken = await CreateSessionAsync(uint.MaxValue);
-    
-        var obj = CreateObject(@object);
-
-        var request = new PutSingleRequest
-        {
-            Body = new () { Object = obj }
-        };
-
-        request.AddMetaHeader();
-        request.AddObjectSessionToken(
-            sessionToken,
-            obj.Header.ContainerId,
-            obj.ObjectId,
-            ObjectSessionContext.Types.Verb.Put,
-            _key
-        );
-
-        request.Sign(_key);
-
-        var response = await _objectServiceClient!.PutSingleAsync(request, null, null, cancellationToken);
-        Verifier.CheckResponse(response);
-        
-        return ObjectId.FromHash(obj.ObjectId.Value.ToByteArray());
-    }
-    
-    public Object.Object CreateObject(ModelsV2.Object @object)
-    {
-        var grpcHeader = @object.Header.ToGrpcMessage();
-       
-        grpcHeader.OwnerId = OwnerId.ToGrpcMessage();
-        grpcHeader.Version = Version.ToGrpcMessage();
-
-        if (@object.Payload != null)
-        {
-            grpcHeader.PayloadLength = (ulong)@object.Payload.Length;
-            grpcHeader.PayloadHash = Sha256Checksum(@object.Payload);
-        }
-
-        var split = @object.Header.Split;
-        if (split != null)
-        {
-            grpcHeader.Split = new Header.Types.Split
-            {
-                SplitId = split.SplitId != null ? ByteString.CopyFrom(split.SplitId.ToBinary()) : null                    
-            };
-
-            if (split.Children != null && split.Children.Any())
-                grpcHeader.Split.Children.AddRange(split.Children.Select(id => id.ToGrpcMessage()));
-
-            if (split.ParentHeader is not null)
-            {
-                var grpcParentHeader = CreateHeader(split.ParentHeader, []);
-
-                grpcHeader.Split.Parent = new ObjectID { Value = grpcParentHeader.Sha256() };
-                grpcHeader.Split.ParentHeader = grpcParentHeader;
-                grpcHeader.Split.ParentSignature = new Refs.Signature
-                {
-                    Key = ByteString.CopyFrom(_key.PublicKey()),
-                    Sign = ByteString.CopyFrom(_key.SignData(grpcHeader.Split.Parent.ToByteArray())),
-                };
-
-                split.Parent = grpcHeader.Split.Parent.ToModel();
-            }
-
-            grpcHeader.Split.Previous = split.Previous?.ToGrpcMessage(); 
-        }
-
-        var obj = new Object.Object
-        {
-            Header = grpcHeader,
-            ObjectId = new ObjectID { Value = grpcHeader.Sha256() },
-            Payload = ByteString.CopyFrom(@object.Payload)
-        };
-
-        obj.Signature = new Refs.Signature
-        {
-            Key = ByteString.CopyFrom(_key.PublicKey()),
-            Sign = ByteString.CopyFrom(_key.SignData(obj.ObjectId.ToByteArray())),
-        };        
+        using var stream = GetObjectInit(request, ctx);
       
-        return obj;
-    }
-
-    public Header CreateHeader(ObjectHeader header, byte[]? payload)
-    {
-        var grpcHeader = header.ToGrpcMessage();
-       
-        grpcHeader.OwnerId = OwnerId.ToGrpcMessage();
-        grpcHeader.Version = Version.ToGrpcMessage();
-
-        if (header.PayloadCheckSum != null)
-        {
-            grpcHeader.PayloadHash = new Checksum
-            {
-                Type = ChecksumType.Sha256,
-                Sum = ByteString.CopyFrom(header.PayloadCheckSum)
-            };
-         }
-         else 
-         {
-            if (payload != null)    
-                grpcHeader.PayloadHash = Sha256Checksum(payload);
-         }
-
-        return grpcHeader;
-    }
-
-    public async Task DeleteObjectAsync(ContainerId cid, ObjectId oid)
-    {
-        var request = new DeleteRequest
-        {
-            Body = new DeleteRequest.Types.Body
-            {
-                Address = new Address
-                {
-                    ContainerId = cid.ToGrpcMessage(),
-                    ObjectId = oid.ToGrpcMessage()
-                }
-            }
-        };
-
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var response = await _objectServiceClient!.DeleteAsync(request);
-        Verifier.CheckResponse(response);
-    }
-
-    public async IAsyncEnumerable<ObjectId> SearchObjectsAsync(ContainerId cid, params ObjectFilter[] filters)
-    {
-        var request = new SearchRequest
-        {
-            Body = new SearchRequest.Types.Body
-            {
-                ContainerId = cid.ToGrpcMessage(),
-                Filters = { },
-                Version = 1
-            }
-        };
-
-        foreach (var filter in filters)
-        {
-            request.Body.Filters.Add(filter.ToGrpcMessage());
-        }
-
-
-        request.AddMetaHeader();
-        request.Sign(_key);
-        var objectsIds = SearchObjects(request);
-
-
-        await foreach (var oid in objectsIds)
-        {
-            yield return ObjectId.FromHash(oid.Value.ToByteArray());
-        }
-    }
-
-    private async Task<Object.Object> GetObject(GetRequest request)
-    {
-        using var stream = GetObjectInit(request);
         var obj = await stream.ReadHeader();
         var payload = new byte[obj.Header.PayloadLength];
         var offset = 0L;
@@ -392,57 +334,134 @@ public partial class Client
         return obj;
     }
 
-    private ObjectReader GetObjectInit(GetRequest initRequest)
+    private ObjectReader GetObjectInit(GetRequest initRequest, Context ctx)
     {
         if (initRequest is null)
             throw new ArgumentNullException(nameof(initRequest));
 
-
-        return new ObjectReader
-        {
-            Call = _objectServiceClient!.Get(initRequest)
-        };
+        var call = objectServiceClient!.Get(initRequest, null, ctx.Deadline, ctx.CancellationToken);
+ 
+        return new ObjectReader(call);
     }
 
-    private async Task<ObjectStreamer> PutObjectInit(PutRequest initRequest)
+    private async Task<ObjectStreamer> PutObjectInit(PutRequest initRequest, Context ctx)
     {
         if (initRequest is null)
         {
             throw new ArgumentNullException(nameof(initRequest));
         }
 
-        var call = _objectServiceClient!.Put();
+        var call = objectServiceClient!.Put(null, ctx.Deadline, ctx.CancellationToken);
+
         await call.RequestStream.WriteAsync(initRequest);
 
         return new ObjectStreamer(call);
     }
 
-    private async IAsyncEnumerable<ObjectID> SearchObjects(SearchRequest request)
+    private async IAsyncEnumerable<ObjectID> SearchObjects(SearchRequest request, Context ctx)
     {
-        using var stream = GetSearchReader(request);
-        var ids = await stream.Read();
-        while (ids is not null)
+        using var stream = GetSearchReader(request, ctx);
+       
+        while (true)
         {
+            var ids = await stream.Read(ctx.CancellationToken);
+
+            if (ids == null)
+                break;
+                
             foreach (var oid in ids)
             {
                 yield return oid;
             }
-
-            ids = await stream.Read();
         }
     }
 
-    private SearchReader GetSearchReader(SearchRequest initRequest)
+    private SearchReader GetSearchReader(SearchRequest initRequest, Context ctx)
     {
         if (initRequest is null)
         {
             throw new ArgumentNullException(nameof(initRequest));
         }
 
-        return new SearchReader(_objectServiceClient!.Search(initRequest));
+        var call = objectServiceClient!.Search(initRequest, null, ctx.Deadline, ctx.CancellationToken);
+    
+        return new SearchReader(call);
+    }
+    
+    private Object.Object CreateObject(ModelsV2.Object @object)
+    {
+        var grpcHeader = @object.Header.ToGrpcMessage();
+       
+        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
+        grpcHeader.Version = Context.Version.ToGrpcMessage();
+
+        if (@object.Payload != null)
+        {
+            grpcHeader.PayloadLength = (ulong)@object.Payload.Length;
+            grpcHeader.PayloadHash = Sha256Checksum(@object.Payload);
+        }
+
+        var split = @object.Header.Split;
+        if (split != null)
+        {
+            grpcHeader.Split = new Header.Types.Split
+            {
+                SplitId = split.SplitId != null ? ByteString.CopyFrom(split.SplitId.ToBinary()) : null                    
+            };
+
+            if (split.Children != null && split.Children.Count != 0)
+                grpcHeader.Split.Children.AddRange(split.Children.Select(id => id.ToGrpcMessage()));
+
+            if (split.ParentHeader is not null)
+            {
+                var grpcParentHeader = CreateHeader(split.ParentHeader, []);
+
+                grpcHeader.Split.Parent = new ObjectID { Value = grpcParentHeader.Sha256() };
+                grpcHeader.Split.ParentHeader = grpcParentHeader;
+                grpcHeader.Split.ParentSignature = new Refs.Signature
+                {
+                    Key = ByteString.CopyFrom(Context.Key.PublicKey()),
+                    Sign = ByteString.CopyFrom(Context.Key.SignData(grpcHeader.Split.Parent.ToByteArray())),
+                };
+
+                split.Parent = grpcHeader.Split.Parent.ToModel();
+            }
+
+            grpcHeader.Split.Previous = split.Previous?.ToGrpcMessage(); 
+        }
+
+        var obj = new Object.Object
+        {
+            Header = grpcHeader,
+            ObjectId = new ObjectID { Value = grpcHeader.Sha256() },
+            Payload = ByteString.CopyFrom(@object.Payload)
+        };
+
+        obj.Signature = new Refs.Signature
+        {
+            Key = ByteString.CopyFrom(Context.Key.PublicKey()),
+            Sign = ByteString.CopyFrom(Context.Key.SignData(obj.ObjectId.ToByteArray())),
+        };        
+      
+        return obj;
     }
 
-    public Checksum Sha256Checksum(byte[] data)
+    private Header CreateHeader(ObjectHeader header, byte[]? payload)
+    {
+        var grpcHeader = header.ToGrpcMessage();
+       
+        grpcHeader.OwnerId = Context.Owner.ToGrpcMessage();
+        grpcHeader.Version = Context.Version.ToGrpcMessage();
+
+        if (header.PayloadCheckSum != null)
+            grpcHeader.PayloadHash = Sha256Checksum(header.PayloadCheckSum);
+        else if (payload != null)    
+            grpcHeader.PayloadHash = Sha256Checksum(payload);
+       
+        return grpcHeader;
+    }
+
+    private static Checksum Sha256Checksum(byte[] data)
     {
         return new Checksum
         {
@@ -450,8 +469,14 @@ public partial class Client
             Sum =  ByteString.CopyFrom(data.Sha256())
         };
     }
+
+    private async Task<Session.SessionToken> GetOrCreateSession(Context ctx)
+    {
+        if (string.IsNullOrEmpty(ctx.SessionToken))
+        { 
+            return await Context.SessionService!.CreateSessionAsync(uint.MaxValue, ctx);
+        }
+        
+        return Convert.FromBase64String(ctx.SessionToken).DeserializeSessionToken();
+    }
 }
-
-
-
-

src/FrostFS.SDK.ClientV2/Services/SearchReader.cs

@@ -7,6 +7,7 @@ using Grpc.Core;
 
 using FrostFS.Object;
 using FrostFS.Refs;
+using System.Threading;
 
 namespace FrostFS.SDK.ClientV2;
 
@@ -14,14 +15,13 @@ internal class SearchReader(AsyncServerStreamingCall<SearchResponse> call) : IDi
 {
     public AsyncServerStreamingCall<SearchResponse> Call { get; private set; } = call;
 
-    public async Task<List<ObjectID>?> Read()
+    public async Task<List<ObjectID>?> Read(CancellationToken cancellationToken)
     {
-        if (!await Call.ResponseStream.MoveNext())
-        {
+        if (!await Call.ResponseStream.MoveNext(cancellationToken))
             return null;
-        }
-
+       
         var response = Call.ResponseStream.Current;
+        
         Verifier.CheckResponse(response);
 
         return response.Body?.IdList.ToList();

src/FrostFS.SDK.ClientV2/Services/SessionServiceProvider.cs

@@ -5,28 +5,38 @@ using FrostFS.Session;
 
 namespace FrostFS.SDK.ClientV2;
 
-public partial class Client
-{
-    private async Task<SessionToken> CreateSessionAsync(ulong expiration)
+internal class SessionServiceProvider : ContextAccessor
+{  
+    private readonly SessionService.SessionServiceClient? _sessionServiceClient;
+
+    internal SessionServiceProvider(SessionService.SessionServiceClient? sessionServiceClient, ClientEnvironment context)
+        : base (context)
+    {
+        _sessionServiceClient = sessionServiceClient;
+    }
+
+    internal async Task<SessionToken> CreateSessionAsync(ulong expiration, Context ctx)
     {
         var request = new CreateRequest
         {
             Body = new CreateRequest.Types.Body
             {
-                OwnerId = OwnerId.ToGrpcMessage(),
-                Expiration = expiration,
+                OwnerId = Context.Owner.ToGrpcMessage(),
+                Expiration = expiration
             }
         };
 
         request.AddMetaHeader();
-        request.Sign(_key);
+        request.Sign(Context.Key);
 
-        return await CreateSession(request);
+        var token = await CreateSession(request, ctx);
+
+        return token;
     }
 
-    private async Task<SessionToken> CreateSession(CreateRequest request)
+    internal async Task<SessionToken> CreateSession(CreateRequest request, Context ctx)
     {
-        var resp = await _sessionServiceClient.CreateAsync(request);
+        var resp = await _sessionServiceClient!.CreateAsync(request, null, ctx.Deadline, ctx.CancellationToken);
         
         return new SessionToken
         {

src/FrostFS.SDK.ClientV2/Tools/ClientEnvironment.cs

@@ -0,0 +1,40 @@
+using FrostFS.SDK.ModelsV2;
+using Grpc.Net.Client;
+using System;
+using System.Security.Cryptography;
+
+namespace FrostFS.SDK.ClientV2;
+
+public class ClientEnvironment(ECDsa key, OwnerId owner, GrpcChannel channel, ModelsV2.Version version) : IDisposable
+{
+    internal OwnerId Owner { get; } = owner;
+    internal GrpcChannel Channel { get; private set; } = channel;
+    internal ECDsa Key { get; } = key;
+    internal ModelsV2.Version Version { get; } = version;
+    internal NetworkSettings? NetworkSettings { get; set; }
+
+    internal ContainerServiceProvider? ContainerService { get; set; }
+    internal NetmapServiceProvider? NetmapService { get; set; }
+    internal SessionServiceProvider? SessionService { get; set; }
+    internal ObjectServiceProvider? ObjectService { get; set; }
+
+    internal bool Initialized => 
+        ContainerService != null
+        && NetmapService != null
+        && SessionService != null
+        && ObjectService != null;
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    protected virtual void Dispose(bool disposing)
+    {
+        if (disposing)
+        {
+            Channel.Dispose();
+        }
+    }
+}

src/FrostFS.SDK.ClientV2/Tools/ContextAccessor.cs

@@ -0,0 +1,8 @@
+namespace FrostFS.SDK.ClientV2;
+
+internal class ContextAccessor(ClientEnvironment context)
+{
+    protected ClientEnvironment Context { get; set; } = context;
+}
+
+

src/FrostFS.SDK.ClientV2/Tools/NetworkSettings.cs

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+
+namespace FrostFS.SDK.ClientV2;
+
+public class NetworkSettings
+    {
+        public ulong ContainerFee { get; internal set; }
+        public ulong ContainerAliasFee { get; internal set; }
+        public ulong InnerRingCandidateFee { get; internal set; }
+        public ulong WithdrawFee { get; internal set; }
+        public ulong EpochDuration { get; internal set; }
+        public ulong IRCandidateFee { get; internal set; }
+        public ulong MaxObjectSize { get; internal set; }
+        public ulong MaxECDataCount { get; internal set; }
+        public ulong MaxECParityCount { get; internal set; }
+        public ulong WithdrawalFee { get; internal set; }
+        public bool HomomorphicHashingDisabled { get; internal set; }
+        public bool MaintenanceModeAllowed { get; internal set; }
+        
+        public Dictionary<string, object> UnnamedSettings { get; } = [];
+    }

src/FrostFS.SDK.ClientV2/Tools/Object.cs

@@ -1,10 +1,11 @@
 
+using System;
 using System.Collections.Generic;
 using FrostFS.SDK.ModelsV2;
 
 namespace FrostFS.SDK.ClientV2.Extensions;
 
-public static class Extensions
+public static class ObjectExtensions
 {
     public static ModelsV2.Object SetPayloadLength(this ModelsV2.Object obj, ulong length)
     {
@@ -41,4 +42,15 @@ public static class Extensions
         linkObject.Header.Split!.Children.AddRange(objectIds);
         return linkObject;
     }
+
+    public static ModelsV2.Object CalculateObjectId(this ModelsV2.Object obj)
+    {
+        if (obj.Payload == null)
+            throw new MissingFieldException("Payload cannot be null");
+
+        if (obj.Header == null)
+            throw new MissingFieldException("Header cannot be null");
+
+        return obj;
+    }
 }

src/FrostFS.SDK.ClientV2/Tools/Range.cs

@@ -41,10 +41,10 @@ namespace System
         }
 
         /// <summary>Create an Index pointing at first element.</summary>
-        public static Index Start => new Index(0);
+        public static Index Start => new(0);
 
         /// <summary>Create an Index pointing at beyond last element.</summary>
-        public static Index End => new Index(~0);
+        public static Index End => new(~0);
 
         /// <summary>Create an Index from the start at the position indicated by the value.</summary>
         /// <param name="value">The index value from the start.</param>
@@ -116,7 +116,7 @@ namespace System
 
         /// <summary>Indicates whether the current Index object is equal to another object of the same type.</summary>
         /// <param name="value">An object to compare with this object</param>
-        public override bool Equals(object? value) => value is Index && _value == ((Index)value)._value;
+        public override bool Equals(object? value) => value is Index index && _value == index._value;
 
         /// <summary>Indicates whether the current Index object is equal to another Index object.</summary>
         /// <param name="other">An object to compare with this object</param>
@@ -147,22 +147,16 @@ namespace System
     /// int[] subArray2 = someArray[1..^0]; // { 2, 3, 4, 5 }
     /// </code>
     /// </remarks>
-    internal readonly struct Range : IEquatable<Range>
+    /// <remarks>Construct a Range object using the start and end indexes.</remarks>
+    /// <param name="start">Represent the inclusive start index of the range.</param>
+    /// <param name="end">Represent the exclusive end index of the range.</param>
+    internal readonly struct Range(Index start, Index end) : IEquatable<Range>
     {
         /// <summary>Represent the inclusive start index of the Range.</summary>
-        public Index Start { get; }
+        public Index Start { get; } = start;
 
         /// <summary>Represent the exclusive end index of the Range.</summary>
-        public Index End { get; }
-
-        /// <summary>Construct a Range object using the start and end indexes.</summary>
-        /// <param name="start">Represent the inclusive start index of the range.</param>
-        /// <param name="end">Represent the exclusive end index of the range.</param>
-        public Range(Index start, Index end)
-        {
-            Start = start;
-            End = end;
-        }
+        public Index End { get; } = end;
 
         /// <summary>Indicates whether the current Range object is equal to another object of the same type.</summary>
         /// <param name="value">An object to compare with this object</param>
@@ -188,13 +182,13 @@ namespace System
         }
 
         /// <summary>Create a Range object starting from start index to the end of the collection.</summary>
-        public static Range StartAt(Index start) => new Range(start, Index.End);
+        public static Range StartAt(Index start) => new(start, Index.End);
 
         /// <summary>Create a Range object starting from first element in the collection to the end Index.</summary>
-        public static Range EndAt(Index end) => new Range(Index.Start, end);
+        public static Range EndAt(Index end) => new(Index.Start, end);
 
         /// <summary>Create a Range object starting from first element to the end.</summary>
-        public static Range All => new Range(Index.Start, Index.End);
+        public static Range All => new(Index.Start, Index.End);
 
         /// <summary>Calculate the start offset and length of range object using a collection length.</summary>
         /// <param name="length">The length of the collection that the range will be used with. length has to be a positive value.</param>
@@ -252,7 +246,7 @@ namespace System.Runtime.CompilerServices
 
                 if (length == 0)
                 {
-                    return Array.Empty<T>();
+                    return [];
                 }
 
                 var dest = new T[length];

src/FrostFS.SDK.ClientV2/Tools/RequestConstructor.cs

@@ -17,13 +17,15 @@ public static class RequestConstructor
 
     public static void AddObjectSessionToken(
         this IRequest request, 
-        SessionToken sessionToken, 
+        Session.SessionToken sessionToken, 
         ContainerID cid,
         ObjectID oid,
         ObjectSessionContext.Types.Verb verb,
         ECDsa key)
     {
-        if (request.MetaHeader.SessionToken is not null) return;
+        if (request.MetaHeader.SessionToken is not null)
+            return;
+
         request.MetaHeader.SessionToken = sessionToken;
         var ctx = new ObjectSessionContext
         {
@@ -34,6 +36,7 @@ public static class RequestConstructor
             },
             Verb = verb
         };
+
         request.MetaHeader.SessionToken.Body.Object = ctx;
         request.MetaHeader.SessionToken.Signature = key.SignMessagePart(request.MetaHeader.SessionToken.Body);
     }

src/FrostFS.SDK.ClientV2/Tools/RequestSigner.cs

@@ -84,7 +84,7 @@ public static class RequestSigner
         return sig;
     }
 
-    public static void Sign(this IVerificableMessage message, ECDsa key)
+    public static void Sign(this IVerifiableMessage message, ECDsa key)
     {
         var meta = message.GetMetaHeader();
         IVerificationHeader verify = message switch
@@ -95,12 +95,15 @@ public static class RequestSigner
         };
       
         var verifyOrigin = message.GetVerificationHeader();
+      
         if (verifyOrigin is null)
             verify.BodySignature = key.SignMessagePart(message.GetBody());
-
+        else 
+            verify.SetOrigin(verifyOrigin);
+        
         verify.MetaSignature = key.SignMessagePart(meta);
         verify.OriginSignature = key.SignMessagePart(verifyOrigin);
-        verify.SetOrigin(verifyOrigin);
+        
         message.SetVerificationHeader(verify);
     }
 }

src/FrostFS.SDK.ClientV2/Tools/Verifier.cs

@@ -68,7 +68,7 @@ public static class Verifier
             return false;
 
         using var key = sig.Key.ToByteArray().LoadPublicKey();
-        var data2Verify = data is null ? Array.Empty<byte>() : data.ToByteArray();
+        var data2Verify = data is null ? [] : data.ToByteArray();
         
         return key.VerifyData(data2Verify, sig.Sign.ToByteArray());
     }
@@ -89,7 +89,7 @@ public static class Verifier
         return verification.BodySignature is null && VerifyMatryoskaLevel(body, meta.GetOrigin(), origin);
     }
 
-    public static bool Verify(this IVerificableMessage message)
+    public static bool Verify(this IVerifiableMessage message)
     {
         return VerifyMatryoskaLevel(message.GetBody(), message.GetMetaHeader(), message.GetVerificationHeader());
     }
@@ -100,7 +100,17 @@ public static class Verifier
             throw new FormatException($"invalid response, type={resp.GetType()}");
      
         var status = resp.MetaHeader.Status.ToModel();
-        if (!status.IsSuccess())
+        if (!status.IsSuccess)
             throw new ApplicationException(status.ToString());
     }
+
+    /// <summary>
+    /// This method is intended for unit tests for request verification.
+    /// </summary>
+    /// <param name="request">Created by SDK request to gRpc proxy</param>
+    public static void CheckRequest(IRequest request)
+    {
+        if (!request.Verify())
+            throw new FormatException($"invalid response, type={request.GetType()}");
+    }
 }

src/FrostFS.SDK.Cryptography/AssemblyInfo.cs

@@ -17,4 +17,4 @@ using System.Runtime.InteropServices;
 
 [assembly: Guid("08a8487e-39ce-41fb-9c24-13f73ff2bde0")]
 
-[assembly: InternalsVisibleToAttribute("FrostFS.SDK.Cryptography.Test")]
+[assembly: InternalsVisibleTo("FrostFS.SDK.Cryptography.Test")]

src/FrostFS.SDK.Cryptography/Base58.cs

@@ -34,9 +34,11 @@ public static class Base58
         byte[] checksum = data.ToArray().Sha256().Sha256();
         Span<byte> buffer = stackalloc byte[data.Length + 4];
         data.CopyTo(buffer);
+        
         checksum[..4].AsSpan().CopyTo(buffer[data.Length..]);
         var ret = Encode(buffer);
         buffer.Clear();
+
         return ret;
     }
 

src/FrostFS.SDK.Cryptography/Extentions.cs

@@ -6,7 +6,7 @@ using System.Security.Cryptography;
 
 namespace FrostFS.SDK.Cryptography;
 
-public static class Helper
+public static class Extentions
 {
     internal static byte[] RIPEMD160(this byte[] value)
     {

src/FrostFS.SDK.Cryptography/FrostFS.SDK.Cryptography.csproj

@@ -6,6 +6,10 @@
 	  <Nullable>enable</Nullable>
   </PropertyGroup>
 
+    <PropertyGroup>
+	    <EnableNETAnalyzers>true</EnableNETAnalyzers>
+    </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="BouncyCastle.Cryptography" Version="2.4.0" />
     <PackageReference Include="Google.Protobuf" Version="3.27.0" />

src/FrostFS.SDK.Cryptography/Key.cs

@@ -56,7 +56,7 @@ public static class KeyExtension
 
         var script = new byte[] { 0x0c, CompressedPublicKeyLength }; //PUSHDATA1 33
         script = ArrayHelper.Concat(script, publicKey);
-        script = ArrayHelper.Concat(script, new byte[] { 0x41 }); //SYSCALL
+        script = ArrayHelper.Concat(script, [0x41]); //SYSCALL
         script = ArrayHelper.Concat(script, BitConverter.GetBytes(CheckSigDescriptor)); //Neo_Crypto_CheckSig
 
         return script;
@@ -80,7 +80,7 @@ public static class KeyExtension
     private static byte[] GetPrivateKeyFromWIF(string wif)
     {
         if (wif == null) 
-            throw new ArgumentNullException();
+            throw new ArgumentNullException(nameof(wif));
         
         var data = wif.Base58CheckDecode();
         
@@ -117,7 +117,7 @@ public static class KeyExtension
         var pos = 33 - param.Q.X.Length;
 
         param.Q.X.CopyTo(pubkey, pos);
-        if (new BigInteger(param.Q.Y.Reverse().Concat(new byte[] { 0x00 }).ToArray()).IsEven)
+        if (new BigInteger(param.Q.Y.Reverse().Concat(new byte[] { 0x0 }).ToArray()).IsEven)
             pubkey[0] = 0x2;
         else
             pubkey[0] = 0x3;

src/FrostFS.SDK.Cryptography/Range.cs

@@ -41,10 +41,10 @@ namespace System
         }
 
         /// <summary>Create an Index pointing at first element.</summary>
-        public static Index Start => new Index(0);
+        public static Index Start => new(0);
 
         /// <summary>Create an Index pointing at beyond last element.</summary>
-        public static Index End => new Index(~0);
+        public static Index End => new(~0);
 
         /// <summary>Create an Index from the start at the position indicated by the value.</summary>
         /// <param name="value">The index value from the start.</param>
@@ -116,7 +116,7 @@ namespace System
 
         /// <summary>Indicates whether the current Index object is equal to another object of the same type.</summary>
         /// <param name="value">An object to compare with this object</param>
-        public override bool Equals(object? value) => value is Index && _value == ((Index)value)._value;
+        public override bool Equals(object? value) => value is Index index && _value == index._value;
 
         /// <summary>Indicates whether the current Index object is equal to another Index object.</summary>
         /// <param name="other">An object to compare with this object</param>
@@ -147,22 +147,16 @@ namespace System
     /// int[] subArray2 = someArray[1..^0]; // { 2, 3, 4, 5 }
     /// </code>
     /// </remarks>
-    internal readonly struct Range : IEquatable<Range>
+    /// <remarks>Construct a Range object using the start and end indexes.</remarks>
+    /// <param name="start">Represent the inclusive start index of the range.</param>
+    /// <param name="end">Represent the exclusive end index of the range.</param>
+    internal readonly struct Range (Index start, Index end) : IEquatable<Range>
     {
         /// <summary>Represent the inclusive start index of the Range.</summary>
-        public Index Start { get; }
+        public Index Start { get; } = start;
 
         /// <summary>Represent the exclusive end index of the Range.</summary>
-        public Index End { get; }
-
-        /// <summary>Construct a Range object using the start and end indexes.</summary>
-        /// <param name="start">Represent the inclusive start index of the range.</param>
-        /// <param name="end">Represent the exclusive end index of the range.</param>
-        public Range(Index start, Index end)
-        {
-            Start = start;
-            End = end;
-        }
+        public Index End { get; } = end;
 
         /// <summary>Indicates whether the current Range object is equal to another object of the same type.</summary>
         /// <param name="value">An object to compare with this object</param>
@@ -188,13 +182,13 @@ namespace System
         }
 
         /// <summary>Create a Range object starting from start index to the end of the collection.</summary>
-        public static Range StartAt(Index start) => new Range(start, Index.End);
+        public static Range StartAt(Index start) => new(start, Index.End);
 
         /// <summary>Create a Range object starting from first element in the collection to the end Index.</summary>
-        public static Range EndAt(Index end) => new Range(Index.Start, end);
+        public static Range EndAt(Index end) => new(Index.Start, end);
 
         /// <summary>Create a Range object starting from first element to the end.</summary>
-        public static Range All => new Range(Index.Start, Index.End);
+        public static Range All => new(Index.Start, Index.End);
 
         /// <summary>Calculate the start offset and length of range object using a collection length.</summary>
         /// <param name="length">The length of the collection that the range will be used with. length has to be a positive value.</param>
@@ -252,7 +246,7 @@ namespace System.Runtime.CompilerServices
 
                 if (length == 0)
                 {
-                    return Array.Empty<T>();
+                    return [];
                 }
 
                 var dest = new T[length];

src/FrostFS.SDK.ModelsV2/ClientSettings.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Text;
+
+namespace FrostFS.SDK.ModelsV2;
+
+public class ClientSettings
+{
+    private static readonly string errorTemplate = "{0} is required parameter";
+
+    public string Key { get; set; } = string.Empty;
+
+    public string Host { get; set; } = string.Empty;
+
+    public void Validate()
+    {
+        StringBuilder? error = null;
+
+        if (string.IsNullOrWhiteSpace(Key))
+            (error ??= new StringBuilder()).AppendLine(string.Format(errorTemplate, nameof(Key)));
+
+        if (string.IsNullOrWhiteSpace(Host))
+            (error ??= new StringBuilder()).AppendLine(string.Format(errorTemplate, nameof(Host)));
+
+        if (error != null)
+            throw new ArgumentException(error.ToString());
+    }
+
+}

src/FrostFS.SDK.ModelsV2/Container.cs

@@ -5,17 +5,10 @@ using FrostFS.SDK.ModelsV2.Netmap;
 
 namespace FrostFS.SDK.ModelsV2;
 
-public class Container
+public class Container(BasicAcl basicAcl, PlacementPolicy placementPolicy)
 {
-    public Guid Nonce { get; set; }
-    public BasicAcl BasicAcl { get; set; }
-    public PlacementPolicy PlacementPolicy { get; set; }
-    public Version Version { get; set; }
-
-    public Container(BasicAcl basicAcl, PlacementPolicy placementPolicy)
-    {
-        Nonce = Guid.NewGuid();
-        BasicAcl = basicAcl;
-        PlacementPolicy = placementPolicy;
-    }
+    public Guid Nonce { get; set; } = Guid.NewGuid();
+    public BasicAcl BasicAcl { get; set; } = basicAcl;
+    public PlacementPolicy PlacementPolicy { get; set; } = placementPolicy;
+    public Version? Version { get; set; }
 }

src/FrostFS.SDK.ModelsV2/Context.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Threading;
+
+namespace FrostFS.SDK.ClientV2;
+
+public class Context()
+{
+    public CancellationToken CancellationToken { get; set; } = default;
+    public TimeSpan Timeout { get; set; } = default;
+    public string SessionToken { get; set; } = string.Empty;
+
+    public DateTime? Deadline => Timeout.Ticks > 0 ? DateTime.UtcNow.Add(Timeout) : null;
+}

src/FrostFS.SDK.ModelsV2/Enums/BasicAcl.cs

@@ -3,7 +3,10 @@ using System.ComponentModel;
 namespace FrostFS.SDK.ModelsV2.Enums;
 
 public enum BasicAcl
-{ 
+{
+    [Description("Not defined ACL")] 
+    NotDefined = 0x00000000,
+
     [Description("Basic ACL for private container")]
     Private = 0x1C8C8CCC,
 

src/FrostFS.SDK.ModelsV2/FrostFS.SDK.ModelsV2.csproj

@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+	<PropertyGroup>
+		<EnableNETAnalyzers>true</EnableNETAnalyzers>
+	</PropertyGroup>
+	
   <ItemGroup>
     <ProjectReference Include="..\FrostFS.SDK.Cryptography\FrostFS.SDK.Cryptography.csproj" />
   </ItemGroup>

src/FrostFS.SDK.ModelsV2/GrpcCallInfo.cs

@@ -0,0 +1,8 @@
+namespace FrostFS.SDK.ModelsV2;
+
+public class GrpcCallInfo(string methodName, long elapsedMicroSec, bool hasError)
+{
+    public string MethodName { get; set; } = methodName;
+    public long ElapsedTimeMicroSec { get; set; } = elapsedMicroSec;
+    public bool HasError { get; } = hasError;
+}

src/FrostFS.SDK.ModelsV2/MetaHeader.cs

@@ -1,17 +1,10 @@
 namespace FrostFS.SDK.ModelsV2;
 
-public class MetaHeader
+public class MetaHeader(Version version, int epoch, int ttl)
 {
-    public Version Version { get; set; }
-    public int Epoch { get; set; }
-    public int Ttl { get; set; }
-
-    public MetaHeader(Version version, int epoch, int ttl)
-    {
-        Version = version;
-        Epoch = epoch;
-        Ttl = ttl;
-    }
+    public Version Version { get; set; } = version;
+    public int Epoch { get; set; } = epoch;
+    public int Ttl { get; set; } = ttl;
 
     public static MetaHeader Default()
     {

src/FrostFS.SDK.ModelsV2/Netmap/NetmapInfo.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+
+namespace FrostFS.SDK.ModelsV2.Netmap;
+
+public class NetmapSnapshot(ulong epoch, IReadOnlyList<NodeInfo> nodeInfoCollection)
+{
+    public ulong Epoch { get; private set; } = epoch;
+
+    public IReadOnlyList<NodeInfo> NodeInfoCollection { get; private set; } = nodeInfoCollection;
+}

src/FrostFS.SDK.ModelsV2/Netmap/NodeInfo.cs

@@ -1,9 +1,28 @@
+using System;
+using System.Collections.Generic;
 using FrostFS.SDK.ModelsV2.Enums;
 
 namespace FrostFS.SDK.ModelsV2.Netmap;
 
 public class NodeInfo
 {
-    public NodeState State { get; set; }
-    public Version? Version { get; set; }
+    public NodeInfo(
+        Version version,
+        NodeState state,
+        IReadOnlyCollection<string> addresses,
+        IReadOnlyDictionary<string, string> attributes,
+        ReadOnlyMemory<byte> publicKey)
+    {
+        Version = version;
+        State = state;
+        Addresses = addresses;
+        Attributes = attributes;
+        PublicKey = publicKey;
+    }
+
+    public NodeState State { get; private set; }
+    public Version Version { get; private set; }
+    public IReadOnlyCollection<string> Addresses { get; private set; }
+    public IReadOnlyDictionary<string, string> Attributes { get; private set; }
+    public ReadOnlyMemory<byte> PublicKey { get; private set; }
 }

src/FrostFS.SDK.ModelsV2/Netmap/PlacementPolicy.cs

@@ -1,13 +1,28 @@
+using System;
+using System.Linq;
+
 namespace FrostFS.SDK.ModelsV2.Netmap;
 
-public class PlacementPolicy
+public class PlacementPolicy(bool unique, params Replica[] replicas) : IComparable<PlacementPolicy>
 {
-    public Replica[] Replicas { get; private set; }
-    public bool Unique { get; private set; }
+    public Replica[] Replicas { get; private set; } = replicas;
+    public bool Unique { get; private set; } = unique;
 
-    public PlacementPolicy(bool unique, params Replica[] replicas)
+    public int CompareTo(PlacementPolicy other)
     {
-        Replicas = replicas;
-        Unique = unique;
+        var notEqual = other == null 
+            || Unique != other.Unique
+            || Replicas.Length != other.Replicas.Length;
+
+        if (notEqual)
+            return 1;
+
+        foreach (var replica in Replicas)
+        {
+            if (!other!.Replicas.Any(r => r.Count == replica.Count && r.Selector == replica.Selector))
+                return 1;
+        }
+
+        return 0;
     }
 }

src/FrostFS.SDK.ModelsV2/Object/IObjectReader.cs

@@ -0,0 +1,9 @@
+using System;
+using System.Threading.Tasks;
+
+namespace FrostFS.SDK.ModelsV2;
+
+public interface IObjectReader : IDisposable
+{
+    Task<byte[]?> ReadChunk();
+}

src/FrostFS.SDK.ModelsV2/Object/Object.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Security.Cryptography;
 using FrostFS.SDK.ModelsV2.Enums;
 
@@ -5,8 +6,11 @@ namespace FrostFS.SDK.ModelsV2;
 
 public class Object
 {
-    public Object()
+    public Object(ObjectId objectId, ObjectHeader header, byte[] payload)
     {
+        ObjectId = objectId;
+        Payload = payload;
+        Header = header;        
     }
 
     public Object(ContainerId container, byte[] payload, ObjectType objectType = ObjectType.Regular)
@@ -14,43 +18,47 @@ public class Object
         Payload = payload;
         Header = new ObjectHeader(containerId: container, type: objectType, attributes: []);        
     }
-
+    
     public ObjectHeader Header { get; set; }
-    public ObjectId ObjectId { get; set; }
+    
+    public ObjectId? ObjectId
+    {
+        get; internal set;
+    }
+    
     public byte[] Payload { get; set; }
-    public Signature Signature { get; set; }   
+    
+    public Signature? Signature { get; set; }   
 
     public void SetParent(LargeObject largeObject)
     {
-        Header.Split.ParentHeader = largeObject.Header;
-    }
+        if (Header?.Split == null)
+            throw new Exception("The object is not initialized properly");
 
-    public ObjectId? GetParentId()
-    {
-        return Header.Split?.Parent;
+        Header.Split.ParentHeader = largeObject.Header;
     }
 }
 
 public class LargeObject(ContainerId container) : Object(container, [])
 {
-    private SHA256 payloadHash = SHA256.Create();
+    private readonly SHA256 payloadHash = SHA256.Create();
 
     public void AppendBlock(byte[] bytes, int count)
     {
-        Header.PayloadLength += (ulong)count;
+        Header!.PayloadLength += (ulong)count;
         this.payloadHash.TransformBlock(bytes, 0, count, bytes, 0);
     }
 
     public LargeObject CalculateHash()
     {
         this.payloadHash.TransformFinalBlock([], 0, 0);
-        Header.PayloadCheckSum = this.payloadHash.Hash;
+        Header!.PayloadCheckSum = this.payloadHash.Hash;
         return this;
     }
 
     public ulong PayloadLength
     {
-        get { return Header.PayloadLength; }
+        get { return Header!.PayloadLength; }
     }
 }
 
@@ -58,7 +66,7 @@ public class LinkObject : Object
 {
     public LinkObject(ContainerId containerId, SplitId splitId, LargeObject largeObject) : base (containerId, [])
     {
-        Header.Split = new Split(splitId)
+        Header!.Split = new Split(splitId)
         {
             ParentHeader = largeObject.Header
         };

src/FrostFS.SDK.ModelsV2/Object/ObjectHeader.cs

@@ -22,8 +22,6 @@ public class ObjectHeader
 
     public Split? Split { get; set; }
 
-    public bool ClientCut { get; set; }
-
     public ObjectHeader(
         ContainerId containerId,
         ObjectType type = ObjectType.Regular,

src/FrostFS.SDK.ModelsV2/OwnerId.cs

@@ -4,14 +4,9 @@ using FrostFS.SDK.Cryptography;
 
 namespace FrostFS.SDK.ModelsV2;
 
-public class OwnerId
+public class OwnerId(string id)
 {
-    public string Value { get; }
-
-    public OwnerId(string id)
-    {
-        Value = id;
-    }
+    public string Value { get; } = id;
 
     public static OwnerId FromKey(ECDsa key)
     {

src/FrostFS.SDK.ModelsV2/PutObjectParameters.cs

@@ -0,0 +1,12 @@
+using System.IO;
+
+namespace FrostFS.SDK.ModelsV2;
+
+public class PutObjectParameters
+{
+    public ObjectHeader? Header { get; set; }
+
+    public Stream? Payload { get; set; }
+
+    public bool ClientCut { get; set; }
+}

src/FrostFS.SDK.ModelsV2/SessionToken.cs

@@ -0,0 +1,8 @@
+namespace FrostFS.SDK.ModelsV2;
+
+public class SessionToken(byte[] sessionKey, byte[] id)
+{
+    public byte[] Id { get; } = id;
+
+    public byte[] SessionKey { get; } = sessionKey;
+}

src/FrostFS.SDK.ModelsV2/Signature.cs

@@ -0,0 +1,8 @@
+namespace FrostFS.SDK.ModelsV2;
+
+public class Signature 
+{
+    public byte[]? Key { get; set; }
+    public byte[]? Sign  { get; set; }
+    public SignatureScheme Scheme { get; set; }
+}

src/FrostFS.SDK.ModelsV2/SignatureScheme.cs

@@ -0,0 +1,7 @@
+namespace FrostFS.SDK.ModelsV2;
+
+public enum SignatureScheme {
+    EcdsaSha512,
+    EcdsaRfc6979Sha256,
+    EcdsaRfc6979Sha256WalletConnect
+  }

src/FrostFS.SDK.ModelsV2/SplitId.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace FrostFS.SDK.ModelsV2;
+
+public class SplitId
+{
+    private Guid id;
+
+    public SplitId()
+    {
+        this.id = Guid.NewGuid();
+    }
+    public SplitId(Guid guid)
+    {
+        this.id = guid;
+    }
+
+    private SplitId(byte[] binary)
+    {
+        this.id = new Guid(binary);
+    }
+
+    private SplitId(string str)
+    {
+        this.id = new Guid(str);
+    }
+
+    public static SplitId CreateFromBinary(byte[] binaryData)
+    {
+        return new SplitId(binaryData);
+   }
+
+    public static SplitId CreateFromString(string stringData)
+    {
+        return new SplitId(stringData);
+ 	}
+
+    public override string ToString()
+    {
+        return this.id.ToString();
+    }
+
+    public byte[]? ToBinary()
+    {
+        if (this.id == Guid.Empty)
+            return null;
+
+        return this.id.ToByteArray();
+    }
+}

src/FrostFS.SDK.ModelsV2/Splitter.cs

@@ -1,20 +1,14 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 
 namespace FrostFS.SDK.ModelsV2;
 
-public class Split
+public class Split(SplitId splitId)
 {
     public Split() : this(new SplitId())
     {
     }
 
-    public Split(SplitId splitId)
-    {
-        SplitId = splitId;    
-    }
-
-    public SplitId SplitId { get; private set; }
+    public SplitId SplitId { get; private set; } = splitId;
 
     public ObjectId? Parent { get; set; }
 
@@ -26,63 +20,3 @@ public class Split
 
     public List<ObjectId> Children { get; } = [];
 }
-
-  public enum SignatureScheme {
-    EcdsaSha512,
-    EcdsaRfc6979Sha256,
-    EcdsaRfc6979Sha256WalletConnect
-  }
-
-public class Signature 
-{
-    public byte[] Key { get; set; }
-    public byte[] Sign  { get; set; }
-    public SignatureScheme Scheme { get; set; }
-}
-
-public class SplitId
-{
-    private Guid id;
-
-    public SplitId()
-    {
-        this.id = Guid.NewGuid();
-    }
-    public SplitId(Guid guid)
-    {
-        this.id = guid;
-    }
-
-    private SplitId(byte[] binary)
-    {
-        this.id = new Guid(binary);
-    }
-
-    private SplitId(string str)
-    {
-        this.id = new Guid(str);
-    }
-
-    public static SplitId CrateFromBinary(byte[] binaryData)
-    {
-        return new SplitId(binaryData);
-   }
-
-    public static SplitId CrateFromString(string stringData)
-    {
-        return new SplitId(stringData);
- 	}
-
-    public override string ToString()
-    {
-        return this.id.ToString();
-    }
-
-    public byte[]? ToBinary()
-    {
-        if (this.id == Guid.Empty)
-            return null;
-
-        return this.id.ToByteArray();
-    }
-}

src/FrostFS.SDK.ModelsV2/Status.cs

@@ -2,21 +2,12 @@ using FrostFS.SDK.ModelsV2.Enums;
 
 namespace FrostFS.SDK.ModelsV2;
 
-public class Status
+public class Status(StatusCode code, string? message = null)
 {
-    public StatusCode Code { get; set; }
-    public string Message { get; set; }
+    public StatusCode Code { get; set; } = code;
+    public string Message { get; set; } = message ?? string.Empty;
 
-    public Status(StatusCode code, string? message = null)
-    {
-        Code = code;
-        Message = message ?? string.Empty;
-    }
-
-    public bool IsSuccess()
-    {
-        return Code == StatusCode.Success;
-    }
+    public bool IsSuccess => Code == StatusCode.Success;
 
     public override string ToString()
     {

src/FrostFS.SDK.ProtosV2/FrostFS.SDK.ProtosV2.csproj

@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+	<PropertyGroup>
+		<EnableNETAnalyzers>true</EnableNETAnalyzers>
+	</PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.26.1" />
     <PackageReference Include="Grpc.Net.Client" Version="2.62.0" />

src/FrostFS.SDK.ProtosV2/Interfaces/IRequest.cs

@@ -1,6 +1,6 @@
 namespace FrostFS.Session;
 
-public interface IRequest : IVerificableMessage
+public interface IRequest : IVerifiableMessage
 {
     RequestMetaHeader MetaHeader { get; set; }
     RequestVerificationHeader VerifyHeader { get; set; }

src/FrostFS.SDK.ProtosV2/Interfaces/IResponse.cs

@@ -1,6 +1,6 @@
 namespace FrostFS.Session;
 
-public interface IResponse : IVerificableMessage
+public interface IResponse : IVerifiableMessage
 {
     ResponseMetaHeader MetaHeader { get; set; }
     ResponseVerificationHeader VerifyHeader { get; set; }

src/FrostFS.SDK.ProtosV2/Interfaces/IVerifiableMessage.cs

@@ -2,7 +2,7 @@ using Google.Protobuf;
 
 namespace FrostFS.Session;
 
-public interface IVerificableMessage : IMessage
+public interface IVerifiableMessage : IMessage
 {
     IMetaHeader GetMetaHeader();
     void SetMetaHeader(IMetaHeader metaHeader);

src/FrostFS.SDK.ProtosV2/container/Extension.Message.cs

@@ -6,22 +6,22 @@ namespace FrostFS.Container;
 
 public partial class AnnounceUsedSpaceRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -34,22 +34,22 @@ public partial class AnnounceUsedSpaceRequest : IRequest
 
 public partial class AnnounceUsedSpaceResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -62,22 +62,22 @@ public partial class AnnounceUsedSpaceResponse : IResponse
 
 public partial class GetRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -90,22 +90,22 @@ public partial class GetRequest : IRequest
 
 public partial class GetResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -118,22 +118,22 @@ public partial class GetResponse : IResponse
 
 public partial class PutRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -146,22 +146,22 @@ public partial class PutRequest : IRequest
 
 public partial class PutResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -174,22 +174,22 @@ public partial class PutResponse : IResponse
 
 public partial class DeleteRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -202,22 +202,22 @@ public partial class DeleteRequest : IRequest
 
 public partial class DeleteResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -230,22 +230,22 @@ public partial class DeleteResponse : IResponse
 
 public partial class ListRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -258,22 +258,22 @@ public partial class ListRequest : IRequest
 
 public partial class ListResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -286,22 +286,22 @@ public partial class ListResponse : IResponse
 
 public partial class SetExtendedACLRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -314,22 +314,22 @@ public partial class SetExtendedACLRequest : IRequest
 
 public partial class SetExtendedACLResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -342,22 +342,22 @@ public partial class SetExtendedACLResponse : IResponse
 
 public partial class GetExtendedACLRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -370,22 +370,22 @@ public partial class GetExtendedACLRequest : IRequest
 
 public partial class GetExtendedACLResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }

src/FrostFS.SDK.ProtosV2/netmap/Extension.Message.cs

@@ -5,22 +5,22 @@ namespace FrostFS.Netmap;
 
 public partial class LocalNodeInfoRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -33,22 +33,22 @@ public partial class LocalNodeInfoRequest : IRequest
 
 public partial class LocalNodeInfoResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -61,22 +61,22 @@ public partial class LocalNodeInfoResponse : IResponse
 
 public partial class NetworkInfoRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }
@@ -89,22 +89,22 @@ public partial class NetworkInfoRequest : IRequest
 
 public partial class NetworkInfoResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -114,3 +114,60 @@ public partial class NetworkInfoResponse : IResponse
         return Body;
     }
 }
+
+
+public partial class NetmapSnapshotRequest : IRequest
+{
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
+    {
+        return MetaHeader;
+    }
+
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
+    {
+        return VerifyHeader;
+    }
+
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    {
+        MetaHeader = (RequestMetaHeader)metaHeader;
+    }
+
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    {
+        VerifyHeader = (RequestVerificationHeader)verificationHeader;
+    }
+
+    public IMessage GetBody()
+    {
+        return Body;
+    }
+}
+
+public partial class NetmapSnapshotResponse : IResponse
+{
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
+    {
+        return MetaHeader;
+    }
+
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
+    {
+        return VerifyHeader;
+    }
+
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    {
+        MetaHeader = (ResponseMetaHeader)metaHeader;
+    }
+
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    {
+        VerifyHeader = (ResponseVerificationHeader)verificationHeader;
+    }
+
+    public IMessage GetBody()
+    {
+        return Body;
+    }
+}

src/FrostFS.SDK.ProtosV2/object/Extension.Message.cs

@@ -6,22 +6,22 @@ namespace FrostFS.Object
 {
     public partial class GetRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -34,22 +34,22 @@ namespace FrostFS.Object
 
     public partial class GetResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -62,22 +62,22 @@ namespace FrostFS.Object
 
     public partial class PutRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -90,22 +90,22 @@ namespace FrostFS.Object
 
     public partial class PutResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -118,22 +118,22 @@ namespace FrostFS.Object
 
      public partial class PutSingleRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -146,22 +146,22 @@ namespace FrostFS.Object
 
     public partial class PutSingleResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -174,22 +174,22 @@ namespace FrostFS.Object
 
     public partial class DeleteRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -203,25 +203,25 @@ namespace FrostFS.Object
     public partial class DeleteResponse : IResponse
     {
         [DebuggerStepThrough]
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
         [DebuggerStepThrough]
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
         [DebuggerStepThrough]
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
         [DebuggerStepThrough]
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -235,22 +235,22 @@ namespace FrostFS.Object
 
     public partial class HeadRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -263,22 +263,22 @@ namespace FrostFS.Object
 
     public partial class HeadResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -290,22 +290,22 @@ namespace FrostFS.Object
     }
     public partial class SearchRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -318,22 +318,22 @@ namespace FrostFS.Object
 
     public partial class SearchResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -346,22 +346,22 @@ namespace FrostFS.Object
 
     public partial class GetRangeRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -374,22 +374,22 @@ namespace FrostFS.Object
 
     public partial class GetRangeResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }
@@ -402,22 +402,22 @@ namespace FrostFS.Object
 
     public partial class GetRangeHashRequest : IRequest
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (RequestMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (RequestVerificationHeader)verificationHeader;
         }
@@ -430,22 +430,22 @@ namespace FrostFS.Object
 
     public partial class GetRangeHashResponse : IResponse
     {
-        IMetaHeader IVerificableMessage.GetMetaHeader()
+        IMetaHeader IVerifiableMessage.GetMetaHeader()
         {
             return MetaHeader;
         }
 
-        IVerificationHeader IVerificableMessage.GetVerificationHeader()
+        IVerificationHeader IVerifiableMessage.GetVerificationHeader()
         {
             return VerifyHeader;
         }
 
-        void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+        void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
         {
             MetaHeader = (ResponseMetaHeader)metaHeader;
         }
 
-        void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+        void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
         {
             VerifyHeader = (ResponseVerificationHeader)verificationHeader;
         }

src/FrostFS.SDK.ProtosV2/session/Extension.Message.cs

@@ -4,22 +4,22 @@ namespace FrostFS.Session;
 
 public partial class CreateResponse : IResponse
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (ResponseMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (ResponseVerificationHeader)verificationHeader;
     }
@@ -32,22 +32,22 @@ public partial class CreateResponse : IResponse
 
 public partial class CreateRequest : IRequest
 {
-    IMetaHeader IVerificableMessage.GetMetaHeader()
+    IMetaHeader IVerifiableMessage.GetMetaHeader()
     {
         return MetaHeader;
     }
 
-    IVerificationHeader IVerificableMessage.GetVerificationHeader()
+    IVerificationHeader IVerifiableMessage.GetVerificationHeader()
     {
         return VerifyHeader;
     }
 
-    void IVerificableMessage.SetMetaHeader(IMetaHeader metaHeader)
+    void IVerifiableMessage.SetMetaHeader(IMetaHeader metaHeader)
     {
         MetaHeader = (RequestMetaHeader)metaHeader;
     }
 
-    void IVerificableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
+    void IVerifiableMessage.SetVerificationHeader(IVerificationHeader verificationHeader)
     {
         VerifyHeader = (RequestVerificationHeader)verificationHeader;
     }

src/FrostFS.SDK.Tests/ClientTest.cs

@@ -0,0 +1,87 @@
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+using Microsoft.Extensions.Options;
+
+namespace FrostFS.SDK.Tests;
+
+public class ClientTest
+{
+    private readonly string key = "KwHDAJ66o8FoLBjVbjP2sWBmgBMGjt7Vv4boA7xQrBoAYBE397Aq";
+
+    [Fact]
+    public async void CreateContainerTest()
+    {
+        var factory = new PutContainerMock(this.key)
+        {
+            PlacementPolicy = new PlacementPolicy(true, new Replica(1)),
+            Version = new ModelsV2.Version(2, 13),
+            ContainerGuid = Guid.NewGuid()
+        };
+
+        var settings = Options.Create(new ClientSettings
+        {
+            Key = key,
+            Host = "http://localhost:8080"
+        });
+
+        var fsClient = Client.GetTestInstance(
+            settings,
+            null,
+            new NetmapMock(this.key).GetMock().Object,
+            new SessionMock(this.key).GetMock().Object,
+            factory.GetMock().Object,
+            new ObjectMock(this.key).GetMock().Object);
+
+        var result = await fsClient.CreateContainerAsync(new ModelsV2.Container(BasicAcl.PublicRW, factory.PlacementPolicy));
+
+        Assert.NotNull(result);
+        Assert.NotNull(result.Value);
+        Assert.True(Base58.Encode(factory.ContainerGuid.ToBytes()) == result.Value);
+    }
+
+    [Fact]
+    public async void GetContainerTest()
+    {
+        var factory = new GetContainerMock(this.key)
+        {
+            PlacementPolicy = new PlacementPolicy(true, new Replica(1)),
+            Version = new ModelsV2.Version(2, 13),
+            Acl = BasicAcl.PublicRO,
+            ContainerGuid = Guid.NewGuid(),
+        };
+
+        var settings = Options.Create(new ClientSettings
+        {
+            Key = key,
+            Host = "http://localhost:8080"
+        });
+
+        var fsClient = Client.GetTestInstance(
+            settings,
+            null,
+            new NetmapMock(this.key).GetMock().Object,
+            new SessionMock(this.key).GetMock().Object,
+            factory.GetMock().Object,
+            new ObjectMock(this.key).GetMock().Object);
+
+        var cid = new ContainerId(Base58.Encode(factory.ContainerGuid.ToBytes()));
+
+        var context = new Context();
+
+        var result = await fsClient.GetContainerAsync(cid, context);
+
+        Assert.NotNull(result);
+        Assert.Equal(factory.Acl, result.BasicAcl);
+        Assert.Equal(factory.ContainerGuid, result.Nonce);
+        Assert.Equal(0, factory.PlacementPolicy.CompareTo(result.PlacementPolicy));
+        Assert.Equal(factory.Version.ToString(), result.Version!.ToString());
+    }
+
+    // [Fact]
+    // public async void DeleteObjectAsyncTest()
+    // {   
+    // }
+}

src/FrostFS.SDK.Tests/ClientTestLive.cs

@@ -0,0 +1,229 @@
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ClientV2.Interfaces;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+using Grpc.Core;
+using Grpc.Net.Client;
+using Microsoft.Extensions.Options;
+
+namespace FrostFS.SDK.Tests;
+
+public class ClientTestLive
+{
+    private readonly string key = "KwHDAJ66o8FoLBjVbjP2sWBmgBMGjt7Vv4boA7xQrBoAYBE397Aq";
+    private readonly string url = "http://172.29.238.97:8080";
+
+    [Fact]
+    public async void NetworkMapTest()
+    {
+        var channelOptions = new GrpcChannelOptions
+        {
+            Credentials = ChannelCredentials.Insecure,
+            HttpHandler = new HttpClientHandler()
+        };
+
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+
+        var result = await fsClient.GetNetmapSnapshotAsync();
+
+        Assert.True(result.Epoch > 0);
+        Assert.Single(result.NodeInfoCollection);
+
+        var item = result.NodeInfoCollection[0];
+        Assert.Equal(2, item.Version.Major);
+        Assert.Equal(13, item.Version.Minor);
+        Assert.Equal(NodeState.Online, item.State);
+        Assert.True(item.PublicKey.Length > 0);
+        Assert.Single(item.Addresses);        
+        Assert.Equal(9, item.Attributes.Count);
+    }
+
+    [Fact]
+    public async void NodeInfoTest()
+    {
+        var channelOptions = new GrpcChannelOptions
+        {
+            Credentials = ChannelCredentials.Insecure,
+            HttpHandler = new HttpClientHandler()
+        };
+
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+
+        var result = await fsClient.GetNodeInfoAsync();
+
+        Assert.Equal(2, result.Version.Major);
+        Assert.Equal(13, result.Version.Minor);
+        Assert.Equal(NodeState.Online, result.State);
+        Assert.True(result.PublicKey.Length > 0);
+        Assert.Single(result.Addresses);
+        Assert.Equal(9, result.Attributes.Count);
+    }
+
+    [Fact]
+    public async void SimpleScenarioTest()
+    {
+        var channelOptions =  new GrpcChannelOptions
+        {
+            Credentials = ChannelCredentials.Insecure,
+            HttpHandler = new HttpClientHandler()
+        };
+
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+              
+        await Cleanup(fsClient);
+
+        var containerId = await fsClient.CreateContainerAsync(
+            new ModelsV2.Container(BasicAcl.PublicRW, new PlacementPolicy(true, new Replica(1))));
+
+        var context = new Context { Timeout = TimeSpan.FromSeconds(10) };
+
+        var container = await GetContainer(fsClient, containerId, context);
+
+        Assert.NotNull(container);
+
+        var param = new PutObjectParameters
+        {
+            Header = new ObjectHeader(
+                containerId: containerId,
+                type: ObjectType.Regular,
+                new ObjectAttribute("fileName", "test")),
+            Payload = new MemoryStream([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]),
+            ClientCut = false
+        };
+
+        var objectId = await fsClient.PutObjectAsync(param);
+
+        var filter = new ObjectFilter(ObjectMatchType.Equals, "fileName", "test");
+
+        bool hasObject = false;
+        await foreach (var objId in fsClient.SearchObjectsAsync(containerId, [filter]))
+        {
+            hasObject = true;
+
+            var objHeader = await fsClient.GetObjectHeadAsync(containerId, objectId);
+            Assert.Equal(10u, objHeader.PayloadLength);
+            Assert.Single(objHeader.Attributes);
+            Assert.Equal("fileName", objHeader.Attributes.First().Key);
+            Assert.Equal("test", objHeader.Attributes.First().Value);
+        }
+
+        Assert.True(hasObject);
+
+        var @object = await fsClient.GetObjectAsync(containerId, objectId!);
+
+        Assert.Equal([1, 2, 3, 4, 5, 6, 7, 8, 9, 0], @object.Payload);
+
+        await Cleanup(fsClient);
+
+        await Task.Delay(2000);
+
+        await foreach (var _ in fsClient.ListContainersAsync())
+        {
+            Assert.Fail("Containers exist");
+        }
+    }
+
+    [Fact]
+    public async void ClientCutScenarioTest()
+    {
+        var channelOptions = new GrpcChannelOptions
+        {
+            Credentials = ChannelCredentials.Insecure,
+            HttpHandler = new HttpClientHandler()
+        };
+
+        using var fsClient = Client.GetInstance(GetOptions(this.key, this.url), channelOptions);
+
+        await Cleanup(fsClient);
+
+        var containerId = await fsClient.CreateContainerAsync(
+            new ModelsV2.Container(BasicAcl.PublicRW, new PlacementPolicy(true, new Replica(1))));
+
+        var context = new Context { Timeout = TimeSpan.FromSeconds(10) };
+        var container = await GetContainer(fsClient, containerId, context);
+
+        Assert.NotNull(container);
+
+        var param = new PutObjectParameters
+        {
+            Header = new ObjectHeader(
+                containerId: containerId,
+                type: ObjectType.Regular,
+                new ObjectAttribute("fileName", "test")),
+            Payload = new MemoryStream([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]),
+            ClientCut = true
+        };
+
+        var objectId = await fsClient.PutObjectAsync(param);
+
+        var filter = new ObjectFilter(ObjectMatchType.Equals, "fileName", "test");
+
+        bool hasObject = false;
+        await foreach (var objId in fsClient.SearchObjectsAsync(containerId, [filter]))
+        {
+            hasObject = true;
+
+            var objHeader = await fsClient.GetObjectHeadAsync(containerId, objectId);
+            Assert.Equal(10u, objHeader.PayloadLength);
+            Assert.Single(objHeader.Attributes);
+            Assert.Equal("fileName", objHeader.Attributes.First().Key);
+            Assert.Equal("test", objHeader.Attributes.First().Value);
+        }
+
+        Assert.True(hasObject);
+
+        var @object = await fsClient.GetObjectAsync(containerId, objectId!);
+
+        Assert.Equal([1, 2, 3, 4, 5, 6, 7, 8, 9, 0], @object.Payload);
+
+        await Cleanup(fsClient);
+
+        await Task.Delay(2000);
+
+        await foreach (var _ in fsClient.ListContainersAsync())
+        {
+            Assert.Fail("Containers exist");
+        }
+    }
+
+    private static IOptions<ClientSettings> GetOptions(string key, string url)
+    {
+        var settings = new ClientSettings
+        {
+            Key = key,
+            Host = url
+        };
+
+        return Options.Create(settings);
+    }
+
+    static async Task Cleanup(IFrostFSClient fsClient)
+    {
+        await foreach (var cid in fsClient.ListContainersAsync())
+        {
+            await fsClient.DeleteContainerAsync(cid);
+        }
+    }
+
+    static async Task<ModelsV2.Container> GetContainer(IFrostFSClient fsClient, ContainerId id, Context ctx)
+    {
+        while (true)
+        {
+            try
+            {
+                await Task.Delay(100);   
+                return await fsClient.GetContainerAsync(id, ctx);
+            }
+            catch (ApplicationException)
+            {
+                if (DateTime.UtcNow >= ctx.Deadline)
+                    throw new TimeoutException();
+            }
+            catch (Grpc.Core.RpcException)
+            {
+                throw;
+            }
+        }
+    }
+}

src/FrostFS.SDK.Tests/ContainerServiceMocks/ContainerServiceBase.cs

@@ -0,0 +1,28 @@
+using System.Security.Cryptography;
+using FrostFS.Container;
+using Moq;
+
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+
+namespace FrostFS.SDK.Tests;
+
+public abstract class ServiceBase(string key)
+{
+    public ECDsa Key { get; private set; } = key.LoadWif();
+    public ModelsV2.Version Version { get; set; } = DefaultVersion;
+    public BasicAcl Acl { get; set; } = DefaultAcl;
+    public PlacementPolicy PlacementPolicy { get; set; } = DefaultPlacementPolicy;
+
+    public static ModelsV2.Version DefaultVersion { get; } = new(2, 13);
+    public static BasicAcl DefaultAcl { get; } = BasicAcl.PublicRW;
+    public static PlacementPolicy DefaultPlacementPolicy { get; } = new PlacementPolicy(true, new Replica(1));
+}
+
+public abstract class ContainerServiceBase(string key) : ServiceBase (key)
+{
+    public Guid ContainerGuid { get; set; } = Guid.NewGuid();
+   
+    public abstract Mock<ContainerService.ContainerServiceClient> GetMock();
+}

src/FrostFS.SDK.Tests/ContainerServiceMocks/DeleteContainerMock.cs

@@ -0,0 +1,69 @@
+using FrostFS.Container;
+using FrostFS.Session;
+using Google.Protobuf;
+using Grpc.Core;
+using Moq;
+
+namespace FrostFS.SDK.Tests;
+
+public class DeleteContainerMock(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        var mock = new Mock<ContainerService.ContainerServiceClient>();
+
+        var v = mock.Setup(x => x.DeleteAsync(
+            It.IsAny<DeleteRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()));
+
+
+        v.Returns((Object.DeleteRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+            {
+                var deleteResponse = new Object.DeleteResponse
+                {
+                    Body = new Object.DeleteResponse.Types.Body
+                    {
+                        Tombstone = new Refs.Address
+                        {
+                            ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
+                            ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
+                        }
+                    },
+                    MetaHeader = new ResponseMetaHeader()
+                };
+
+                var metadata = new Metadata();
+
+                return new AsyncUnaryCall<Object.DeleteResponse>(
+                    Task.FromResult(deleteResponse),
+                    Task.FromResult(metadata),
+                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                    () => metadata,
+                    () => { });
+            });
+
+        return mock;
+    }
+}
+
+
+        //    objectServiceClientMock.Setup(x => x.Head(It.IsAny<Object.HeadRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
+        //         .Returns((Object.DeleteRequest r, Metadata m, DateTime dt, CancellationToken ct) =>
+        //             {
+        //                 return new 
+        //                 {
+        //                     Body = new Object.DeleteResponse.Types.Body
+        //                     {
+        //                         Tombstone = new Refs.Address
+        //                         {
+        //                             ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
+        //                             ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
+        //                         }
+        //                     }
+        //                 };
+        //             });
+
+
+       

src/FrostFS.SDK.Tests/ContainerServiceMocks/GetContainerMock.cs

@@ -0,0 +1,163 @@
+using FrostFS.Container;
+using FrostFS.Session;
+using Google.Protobuf;
+using Grpc.Core;
+using Moq;
+
+using FrostFS.SDK.Cryptography;
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ModelsV2.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+
+namespace FrostFS.SDK.Tests;
+
+public class GetContainerMock(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        var mock = new Mock<ContainerService.ContainerServiceClient>();
+
+        var grpcVersion = Version.ToGrpcMessage();
+
+        var getResponse = new GetResponse
+        {
+            Body = new GetResponse.Types.Body
+            {
+                Container = new Container.Container
+                {
+                    Version = grpcVersion,
+                    Nonce = ByteString.CopyFrom(ContainerGuid.ToBytes()),
+                    BasicAcl = (uint)Acl,
+                    PlacementPolicy = PlacementPolicy.ToGrpcMessage()
+                }
+            },
+            MetaHeader = new ResponseMetaHeader
+            {
+                Version = grpcVersion,
+                Epoch = 100,
+                Ttl = 1
+            }
+        };
+
+        getResponse.VerifyHeader = GetResponseVerificationHeader(getResponse);
+
+        var metadata = new Metadata();
+        var getContainerResponse = new AsyncUnaryCall<GetResponse>(
+                    Task.FromResult(getResponse),
+                    Task.FromResult(metadata),
+                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                    () => metadata,
+                    () => { });
+
+        mock.Setup(x => x.GetAsync(
+            It.IsAny<GetRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+                .Returns((GetRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+                {
+                    Verifier.CheckRequest(r);
+
+                    return getContainerResponse;
+                });
+
+        return mock;
+    }
+
+    private ResponseVerificationHeader GetResponseVerificationHeader(GetResponse response)
+    {
+        var verifyHeader = new ResponseVerificationHeader
+        {
+            MetaSignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.MetaHeader.ToByteArray()))
+            },
+            BodySignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.GetBody().ToByteArray()))
+            },
+            OriginSignature = new Refs.Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = FrostFS.Refs.SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData([]))
+            }
+        };
+
+        return verifyHeader;
+    }
+}
+
+//         objectServiceClientMock.Setup(
+//             x => x.Put(It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
+//                 .Returns((Metadata m, DateTime dt, CancellationToken ct) =>
+//                 {
+//                     return new AsyncClientStreamingCall<FrostFS.Object.PutRequest, FrostFS.Object.PutResponse>(null, null, null, null, null, null);
+
+//                     //IClientStreamWriter<TRequest> requestStream, Task<TResponse> responseAsync, Task<Metadata> responseHeadersAsync, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction
+//                 });
+
+//         return objectServiceClientMock;
+//     }
+
+    
+// }
+
+
+  // public virtual global::FrostFS.Object.HeadResponse Head(global::FrostFS.Object.HeadRequest request, grpc::Metadata headers = null, global::System.DateTime? deadline = null, global::System.Threading.CancellationToken cancellationToken = default(global::System.Threading.CancellationToken))
+        //       {
+        //         return Head(request, new grpc::CallOptions(headers, deadline, cancellationToken));
+        //       }
+
+        //    objectServiceClientMock.Setup(x => x.Head(It.IsAny<Object.HeadRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime>(), It.IsAny<CancellationToken>()))
+        //         .Returns((Object.DeleteRequest r, Metadata m, DateTime dt, CancellationToken ct) =>
+        //             {
+        //                 return new 
+        //                 {
+        //                     Body = new Object.DeleteResponse.Types.Body
+        //                     {
+        //                         Tombstone = new Refs.Address
+        //                         {
+        //                             ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
+        //                             ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
+        //                         }
+        //                     }
+        //                 };
+        //             });
+
+
+        // objectServiceClientMock.Setup(x => x.Delete(It.IsAny<Object.DeleteRequest>(), It.IsAny<Metadata>(), It.IsAny<DateTime?>(), It.IsAny<CancellationToken>()))
+        //     .Returns((Object.DeleteRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+        //         {
+        //             return new Object.DeleteResponse
+        //             {
+        //                 Body = new Object.DeleteResponse.Types.Body
+        //                 {
+        //                     Tombstone = new Refs.Address
+        //                     {
+        //                         ContainerId = new Refs.ContainerID { Value = ByteString.CopyFrom([1, 2, 3]) },
+        //                         ObjectId = new Refs.ObjectID { Value = ByteString.CopyFrom([4, 5, 6]) }
+        //                     }
+        //                 },
+        //                 MetaHeader = new ResponseMetaHeader()
+        //                 {                             
+        //                 },
+        //                 VerifyHeader = new ResponseVerificationHeader()
+        //                 {
+        //                     MetaSignature = new Refs.Signature
+        //                     {
+        //                         Key = ByteString.CopyFrom(_key.PublicKey()),
+        //                         Scheme = Refs.SignatureScheme.EcdsaRfc6979Sha256,
+        //                         Sign = ByteString.CopyFrom(_key.SignData(Array.Empty<byte>()))
+
+        //                         // ByteString.CopyFrom(_key.SignData(grpcHeader.Split.Parent.ToByteArray())),
+        //                     }
+        //                  }
+
+        //             };
+        //         });

src/FrostFS.SDK.Tests/ContainerServiceMocks/PutContainerMock.cs

@@ -0,0 +1,88 @@
+using FrostFS.Container;
+using FrostFS.Session;
+using Google.Protobuf;
+using Grpc.Core;
+using Moq;
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ClientV2.Mappers.GRPC.Netmap;
+using FrostFS.SDK.ClientV2.Mappers.GRPC;
+using FrostFS.SDK.Cryptography;
+using FrostFS.Refs;
+
+namespace FrostFS.SDK.Tests;
+
+public class PutContainerMock(string key) : ContainerServiceBase(key)
+{
+    public override Mock<ContainerService.ContainerServiceClient> GetMock()
+    {
+        var mock = new Mock<ContainerService.ContainerServiceClient>();
+
+        PutResponse response = new()
+        {
+            Body = new PutResponse.Types.Body
+            {
+                ContainerId = new ContainerID
+                {
+                    Value = ByteString.CopyFrom(ContainerGuid.ToBytes())
+                }
+            },
+            MetaHeader = new ResponseMetaHeader
+            {
+                Version = Version is null ? DefaultVersion.ToGrpcMessage() : Version.ToGrpcMessage(),
+                Epoch = 100,
+                Ttl = 1
+            }
+        };
+
+        response.VerifyHeader = PutResponseVerificationHeader(response);
+
+        var metadata = new Metadata();
+        var putContainerResponse = new AsyncUnaryCall<PutResponse>(
+                    Task.FromResult(response),
+                    Task.FromResult(metadata),
+                    () => new Grpc.Core.Status(StatusCode.OK, string.Empty),
+                    () => metadata,
+                    () => { });
+
+        mock.Setup(x => x.PutAsync(
+            It.IsAny<PutRequest>(),
+            It.IsAny<Metadata>(),
+            It.IsAny<DateTime?>(),
+            It.IsAny<CancellationToken>()))
+                .Returns((PutRequest r, Metadata m, DateTime? dt, CancellationToken ct) =>
+                {
+                    Verifier.CheckRequest(r);
+
+                    return putContainerResponse;
+                });
+
+        return mock;
+    }
+
+    private ResponseVerificationHeader PutResponseVerificationHeader(PutResponse response)
+    {
+        var verifyHeader = new ResponseVerificationHeader
+        {
+            MetaSignature = new Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.MetaHeader.ToByteArray()))
+            },
+            BodySignature = new Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData(response.GetBody().ToByteArray()))
+            },
+            OriginSignature = new Signature
+            {
+                Key = ByteString.CopyFrom(Key.PublicKey()),
+                Scheme = SignatureScheme.EcdsaRfc6979Sha256,
+                Sign = ByteString.CopyFrom(Key.SignData([]))
+            }
+        };
+
+        return verifyHeader;
+    }
+}

src/FrostFS.SDK.Tests/NetmapMock.cs

@@ -0,0 +1,14 @@
+using Moq;
+using FrostFS.Netmap;
+
+namespace FrostFS.SDK.Tests;
+
+public class NetmapMock(string key) : ServiceBase(key)
+{
+    public Mock<NetmapService.NetmapServiceClient> GetMock()
+    {
+        var mock = new Mock<NetmapService.NetmapServiceClient>();
+
+        return mock;
+    }
+}

src/FrostFS.SDK.Tests/ObjectMock.cs

@@ -0,0 +1,14 @@
+using Moq;
+using FrostFS.Object;
+
+namespace FrostFS.SDK.Tests;
+
+public class ObjectMock(string key) : ServiceBase(key)
+{
+    public Mock<ObjectService.ObjectServiceClient> GetMock()
+    {
+        var mock = new Mock<ObjectService.ObjectServiceClient>();
+
+        return mock;
+    }
+}

src/FrostFS.SDK.Tests/SessionMock.cs

@@ -0,0 +1,14 @@
+using Moq;
+using FrostFS.Session;
+
+namespace FrostFS.SDK.Tests;
+
+public class SessionMock(string key) : ServiceBase(key)
+{
+    public Mock<SessionService.SessionServiceClient> GetMock()
+    {
+        var mock = new Mock<SessionService.SessionServiceClient>();
+
+        return mock;
+    }
+}