diff --git a/lib/netstd/Thrift/TApplicationException.cs b/lib/netstd/Thrift/TApplicationException.cs
new file mode 100644
index 0000000..50f65d6
--- /dev/null
+++ b/lib/netstd/Thrift/TApplicationException.cs
@@ -0,0 +1,150 @@
+﻿// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Thrift.Protocol;
+using Thrift.Protocol.Entities;
+using Thrift.Protocol.Utilities;
+
+namespace Thrift
+{
+    // ReSharper disable once InconsistentNaming
+    public class TApplicationException : TException
+    {
+        public enum ExceptionType
+        {
+            Unknown,
+            UnknownMethod,
+            InvalidMessageType,
+            WrongMethodName,
+            BadSequenceId,
+            MissingResult,
+            InternalError,
+            ProtocolError,
+            InvalidTransform,
+            InvalidProtocol,
+            UnsupportedClientType
+        }
+
+        private const int MessageTypeFieldId = 1;
+        private const int ExTypeFieldId = 2;
+
+        protected ExceptionType Type;
+
+        public TApplicationException()
+        {
+        }
+
+        public TApplicationException(ExceptionType type)
+        {
+            Type = type;
+        }
+
+        public TApplicationException(ExceptionType type, string message)
+            : base(message, null) // TApplicationException is serializable, but we never serialize InnerException
+        {
+            Type = type;
+        }
+
+        public static async Task<TApplicationException> ReadAsync(TProtocol inputProtocol, CancellationToken cancellationToken)
+        {
+            string message = null;
+            var type = ExceptionType.Unknown;
+
+            await inputProtocol.ReadStructBeginAsync(cancellationToken);
+            while (true)
+            {
+                var field = await inputProtocol.ReadFieldBeginAsync(cancellationToken);
+                if (field.Type == TType.Stop)
+                {
+                    break;
+                }
+
+                switch (field.ID)
+                {
+                    case MessageTypeFieldId:
+                        if (field.Type == TType.String)
+                        {
+                            message = await inputProtocol.ReadStringAsync(cancellationToken);
+                        }
+                        else
+                        {
+                            await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        }
+                        break;
+                    case ExTypeFieldId:
+                        if (field.Type == TType.I32)
+                        {
+                            type = (ExceptionType) await inputProtocol.ReadI32Async(cancellationToken);
+                        }
+                        else
+                        {
+                            await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        }
+                        break;
+                    default:
+                        await TProtocolUtil.SkipAsync(inputProtocol, field.Type, cancellationToken);
+                        break;
+                }
+
+                await inputProtocol.ReadFieldEndAsync(cancellationToken);
+            }
+
+            await inputProtocol.ReadStructEndAsync(cancellationToken);
+
+            return new TApplicationException(type, message);
+        }
+
+        public async Task WriteAsync(TProtocol outputProtocol, CancellationToken cancellationToken)
+        {
+            if (cancellationToken.IsCancellationRequested)
+            {
+                await Task.FromCanceled(cancellationToken);
+            }
+
+            const string messageTypeFieldName = "message";
+            const string exTypeFieldName = "exType";
+            const string structApplicationExceptionName = "TApplicationException";
+
+            var struc = new TStruct(structApplicationExceptionName);
+            var field = new TField();
+
+            await outputProtocol.WriteStructBeginAsync(struc, cancellationToken);
+
+            if (!string.IsNullOrEmpty(Message))
+            {
+                field.Name = messageTypeFieldName;
+                field.Type = TType.String;
+                field.ID = MessageTypeFieldId;
+                await outputProtocol.WriteFieldBeginAsync(field, cancellationToken);
+                await outputProtocol.WriteStringAsync(Message, cancellationToken);
+                await outputProtocol.WriteFieldEndAsync(cancellationToken);
+            }
+
+            field.Name = exTypeFieldName;
+            field.Type = TType.I32;
+            field.ID = ExTypeFieldId;
+
+            await outputProtocol.WriteFieldBeginAsync(field, cancellationToken);
+            await outputProtocol.WriteI32Async((int) Type, cancellationToken);
+            await outputProtocol.WriteFieldEndAsync(cancellationToken);
+            await outputProtocol.WriteFieldStopAsync(cancellationToken);
+            await outputProtocol.WriteStructEndAsync(cancellationToken);
+        }
+    }
+}
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