diff --git a/lang/common/bridge/avro/Acknowledgement.avsc b/lang/common/bridge/avro/Acknowledgement.avsc
new file mode 100644
index 0000000..31c9e53
--- /dev/null
+++ b/lang/common/bridge/avro/Acknowledgement.avsc
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+[
+  /*
+   * Acknowledgement that a specific message was received and processed.
+   */
+  {
+    "namespace":"org.apache.reef.bridge.message",
+    "type":"record",
+    "name":"Acknowledgement",
+    "doc":"The Acknowledgement message is sent to the Java bridge to acknowledge receipt and processing of a specific message.",
+    "fields":[
+      {
+        "name":"messageIdentifier",
+        "type":"long",
+        "doc":"The message identifier of the message that was successfully processed."
+      }
+    ]
+  }
+]
diff --git a/lang/common/bridge/avro/Header.avsc b/lang/common/bridge/avro/Header.avsc
new file mode 100644
index 0000000..c543f0b
--- /dev/null
+++ b/lang/common/bridge/avro/Header.avsc
@@ -0,0 +1,41 @@
+﻿/*
+ * 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.
+ */
+[
+  /*
+   * Identify the next message in the Java/C# bridge protocol.
+   */
+  {
+    "namespace":"org.apache.reef.bridge.message",
+    "type":"record",
+    "name":"Header",
+    "doc":"Identifies the following message in the Java/C# bridge protocol.",
+    "fields":[
+      {
+        "name":"identifier",
+        "doc":"Identifier of the next message to be read.",
+        "type":"long"
+      },
+      {
+        "name":"className",
+        "doc":"The fully qualified name of the message class.",
+        "type":"string"
+      }
+    ]
+  }
+]
diff --git a/lang/common/bridge/avro/Protocol.avsc b/lang/common/bridge/avro/Protocol.avsc
new file mode 100644
index 0000000..bb3c9e9
--- /dev/null
+++ b/lang/common/bridge/avro/Protocol.avsc
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+[
+  /*
+   * Notify Java bridge CLR bridge is ininitialized.
+   */
+  {
+    "namespace":"org.apache.reef.bridge.message",
+    "type":"record",
+    "name":"Protocol",
+    "doc":"Negotiate Java/C# bridge protocol messages.",
+    "fields":[
+      {
+        "name":"offset",
+        "type":"int",
+        "doc":"The index offset of the message identifiers."
+      }
+    ]
+  }
+]
diff --git a/lang/common/bridge/avro/SystemOnStart.avsc b/lang/common/bridge/avro/SystemOnStart.avsc
new file mode 100644
index 0000000..8f25fa1
--- /dev/null
+++ b/lang/common/bridge/avro/SystemOnStart.avsc
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+[
+  /*
+   * First message from the Java bridge to the CLR bridge.
+   */
+  {
+    "namespace":"org.apache.reef.bridge.message",
+    "type":"record",
+    "name":"SystemOnStart",
+    "doc":"The SystemOnStart message is sent to the CLR bridge from the Java bridge when the round trip communication path has been established.",
+    "fields":[
+      {
+        "name":"dateTime",
+        "type":"long",
+        "doc":"Date time in seconds as a long since January 1, 1970"
+      }
+    ]
+  }
+]
diff --git a/lang/cs/AvroCodeGeneration.targets b/lang/cs/AvroCodeGeneration.targets
new file mode 100644
index 0000000..48a6695
--- /dev/null
+++ b/lang/cs/AvroCodeGeneration.targets
@@ -0,0 +1,144 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+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.
+--> 
+<!-- AVRO CODE GERNATION TARGETS FOR MSBUILD -->   
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <UsingTask TaskName="AvscToCSharp" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
+    <ParameterGroup>
+      <!-- The directory where the project is located. This is typically $(ProjectDir) -->
+      <ProjectDirectory ParameterType="System.String" Required="true" />
+      <!-- This is the list of C# target files to be generaterd. This is typically @(Compile) -->
+      <SourceFileList ParameterType="System.String" Required="true" />
+      <!-- The directory where the .avsc schema files are located. -->
+      <AvroSchemaDirectory ParameterType="System.String" Required="true" />
+      <!-- The where Avro schema generator and dependent libraries are located. -->
+      <AvroBinaryDirectory ParameterType="System.String" Required="true" />
+    </ParameterGroup>
+    <Task>
+      <Using Namespace="System" />
+      <Using Namespace="System.IO" />
+      <Using Namespace="System.Diagnostics" />
+      <Code Type="Fragment" Language="cs"><![CDATA[
+        // Overall strategy: Copy the executuables and libraries needed
+        // to run the MS Avro code generator to a binary directory
+        // in the packages directory, and then run code generation for
+        // every message defined in the Messages directory.
+
+        // Create a temporary working directory.
+        String tempDir = Path.GetFullPath(Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString()));
+        Directory.CreateDirectory(tempDir);
+        String[] sourceFiles = SourceFileList.Split(new char[]{';'});
+
+        // Get the full path where the avro avsc files are located.
+        String messageDirectory = Path.GetFullPath(AvroSchemaDirectory);
+
+        // Add the avro tools directory to the path.
+        String path = Environment.GetEnvironmentVariable("path");
+        path = Path.GetFullPath(AvroBinaryDirectory) + ";" + path;
+        Environment.SetEnvironmentVariable("path", path);
+
+        String copyright = String.Join(Environment.NewLine,
+          "// 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.");
+
+        // Setup the conversion process.
+        ProcessStartInfo rProcInfo = new ProcessStartInfo()
+        {
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            FileName = "Microsoft.Avro.Tools.exe"
+        };
+
+        // Log the commands to a file.
+        bool conversionError = false;
+        using (StreamWriter logWriter = new StreamWriter(Path.Combine(tempDir, "avroout.log")))
+        {
+          logWriter.WriteLine(Environment.GetEnvironmentVariable("path"));
+          foreach (String file in sourceFiles)
+          {
+            if (file.Contains(@"Message\"))
+            {
+              // Build the name of the source avsc file from the destiname CS file and avro message path.
+              String avroSourceName = Path.Combine(messageDirectory, (Path.GetFileName(file)).Replace(".cs", ".avsc"));
+              rProcInfo.Arguments = String.Format(" CodeGen /I:{0} /O:{1}", avroSourceName, tempDir);
+              logWriter.Write(rProcInfo.FileName);
+              logWriter.WriteLine(rProcInfo.Arguments);
+
+              StringBuilder stdOutBuilder = new StringBuilder();
+              StringBuilder stdErrBuilder = new StringBuilder();
+
+              // Start the conversion process
+              using (Process rProc = Process.Start(rProcInfo))
+              {
+                  stdOutBuilder.Append(rProc.StandardOutput.ReadToEnd());
+                  stdErrBuilder.Append(rProc.StandardError.ReadToEnd());
+                  rProc.WaitForExit();
+                  if (rProc.ExitCode != 0)
+                  {
+                    conversionError = true;
+                  }
+              }
+              logWriter.WriteLine(stdOutBuilder.ToString());
+              logWriter.WriteLine(stdErrBuilder.ToString());
+
+              using (StreamReader tmpReader = new StreamReader(Path.Combine(tempDir, Path.GetFileName(file))))
+              {
+                String source = tmpReader.ReadToEnd();
+                using (StreamWriter destWriter = new StreamWriter(Path.GetFullPath(file)))
+                {
+                  destWriter.WriteLine(copyright);
+                  destWriter.Write(source);
+                }
+              }
+            }
+          }
+        }
+        if (!conversionError)
+        {
+          Directory.Delete(tempDir, recursive : true);
+        }
+      ]]></Code>
+    </Task>
+  </UsingTask>
+  <Target Name="SetupAvroCodeGen" DependsOnTargets="RestorePackages">
+    <Message Text="Copying Avro code generation files to $(AvroBinaryDirectory)..." />
+    <Copy SourceFiles="$(AvroTools)" DestinationFolder="$(AvroBinaryDirectory)" />
+    <Copy SourceFiles="$(AvroLibrary)" DestinationFolder="$(AvroBinaryDirectory)" />
+    <Copy SourceFiles="$(NewtonsoftLibrary)" DestinationFolder="$(AvroBinaryDirectory)" />
+  </Target>
+  <Target Name="CodeGeneration" DependsOnTargets="SetupAvroCodeGen" BeforeTargets="CoreCompile">
+    <Message Text="Generating C# classes from Avro avsc files @(Compile)..." />
+    <AvscToCSharp ProjectDirectory="$(ProjectDir)" SourceFileList="@(Compile)" AvroSchemaDirectory="$(AvroSchemaDirectory)" AvroBinaryDirectory="$(AvroBinaryDirectory)" />
+  </Target>
+</Project>
+
+
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Acknowledgement.cs b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Acknowledgement.cs
new file mode 100644
index 0000000..3125788
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Acknowledgement.cs
@@ -0,0 +1,66 @@
+// 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.
+//<auto-generated />
+namespace org.apache.reef.bridge.message
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Runtime.Serialization;
+    using Microsoft.Hadoop.Avro;
+
+    /// <summary>
+    /// Used to serialize and deserialize Avro record org.apache.reef.bridge.message.Acknowledgement.
+    /// </summary>
+    [DataContract(Namespace = "org.apache.reef.bridge.message")]
+    public partial class Acknowledgement
+    {
+        private const string JsonSchema = @"{""type"":""record"",""name"":""org.apache.reef.bridge.message.Acknowledgement"",""doc"":""The Acknowledgement message is sent to the Java bridge to acknowledge receipt and processing of a specific message."",""fields"":[{""name"":""messageIdentifier"",""doc"":""The message identifier of the message that was successfully processed."",""type"":""long""}]}";
+
+        /// <summary>
+        /// Gets the schema.
+        /// </summary>
+        public static string Schema
+        {
+            get
+            {
+                return JsonSchema;
+            }
+        }
+      
+        /// <summary>
+        /// Gets or sets the messageIdentifier field.
+        /// </summary>
+        [DataMember]
+        public long messageIdentifier { get; set; }
+                
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Acknowledgement"/> class.
+        /// </summary>
+        public Acknowledgement()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Acknowledgement"/> class.
+        /// </summary>
+        /// <param name="messageIdentifier">The messageIdentifier.</param>
+        public Acknowledgement(long messageIdentifier)
+        {
+            this.messageIdentifier = messageIdentifier;
+        }
+    }
+}
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Header.cs b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Header.cs
new file mode 100644
index 0000000..cf0b939
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Header.cs
@@ -0,0 +1,74 @@
+// 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.
+//<auto-generated />
+namespace org.apache.reef.bridge.message
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Runtime.Serialization;
+    using Microsoft.Hadoop.Avro;
+
+    /// <summary>
+    /// Used to serialize and deserialize Avro record org.apache.reef.bridge.message.Header.
+    /// </summary>
+    [DataContract(Namespace = "org.apache.reef.bridge.message")]
+    public partial class Header
+    {
+        private const string JsonSchema = @"{""type"":""record"",""name"":""org.apache.reef.bridge.message.Header"",""doc"":""Identifies the following message in the Java/C# bridge protocol."",""fields"":[{""name"":""identifier"",""doc"":""Identifier of the next message to be read."",""type"":""long""},{""name"":""className"",""doc"":""The fully qualified name of the message class."",""type"":""string""}]}";
+
+        /// <summary>
+        /// Gets the schema.
+        /// </summary>
+        public static string Schema
+        {
+            get
+            {
+                return JsonSchema;
+            }
+        }
+      
+        /// <summary>
+        /// Gets or sets the identifier field.
+        /// </summary>
+        [DataMember]
+        public long identifier { get; set; }
+              
+        /// <summary>
+        /// Gets or sets the className field.
+        /// </summary>
+        [DataMember]
+        public string className { get; set; }
+                
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Header"/> class.
+        /// </summary>
+        public Header()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Header"/> class.
+        /// </summary>
+        /// <param name="identifier">The identifier.</param>
+        /// <param name="className">The className.</param>
+        public Header(long identifier, string className)
+        {
+            this.identifier = identifier;
+            this.className = className;
+        }
+    }
+}
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Protocol.cs b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Protocol.cs
new file mode 100644
index 0000000..2f88621
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/Protocol.cs
@@ -0,0 +1,66 @@
+// 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.
+//<auto-generated />
+namespace org.apache.reef.bridge.message
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Runtime.Serialization;
+    using Microsoft.Hadoop.Avro;
+
+    /// <summary>
+    /// Used to serialize and deserialize Avro record org.apache.reef.bridge.message.Protocol.
+    /// </summary>
+    [DataContract(Namespace = "org.apache.reef.bridge.message")]
+    public partial class Protocol
+    {
+        private const string JsonSchema = @"{""type"":""record"",""name"":""org.apache.reef.bridge.message.Protocol"",""doc"":""Negotiate Java/C# bridge protocol messages."",""fields"":[{""name"":""offset"",""doc"":""The index offset of the message identifiers."",""type"":""int""}]}";
+
+        /// <summary>
+        /// Gets the schema.
+        /// </summary>
+        public static string Schema
+        {
+            get
+            {
+                return JsonSchema;
+            }
+        }
+      
+        /// <summary>
+        /// Gets or sets the offset field.
+        /// </summary>
+        [DataMember]
+        public int offset { get; set; }
+                
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Protocol"/> class.
+        /// </summary>
+        public Protocol()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Protocol"/> class.
+        /// </summary>
+        /// <param name="offset">The offset.</param>
+        public Protocol(int offset)
+        {
+            this.offset = offset;
+        }
+    }
+}
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/README.md b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/README.md
new file mode 100644
index 0000000..e6ba2f0
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/README.md
@@ -0,0 +1,10 @@
+﻿# Java/C# Interop Avro Messages
+
+### DO NOT EDIT THESE C# FILES
+
+The C# files in this directory are generated during the build from the Avro
+record definition files in lang/common/bridge/avro. When adding a new .avsc
+file in lang/common/bridge/avro you must also put an empty .cs file here
+with the same name as the .cs file is the dependency. For example,
+
+  lang/common/bridge/avro/MyMsg.avsc -> lang/common/bridge/avro/MyMsg.cs
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/SystemOnStart.cs b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/SystemOnStart.cs
new file mode 100644
index 0000000..b066679
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Message/SystemOnStart.cs
@@ -0,0 +1,66 @@
+// 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.
+//<auto-generated />
+namespace org.apache.reef.bridge.message
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Runtime.Serialization;
+    using Microsoft.Hadoop.Avro;
+
+    /// <summary>
+    /// Used to serialize and deserialize Avro record org.apache.reef.bridge.message.SystemOnStart.
+    /// </summary>
+    [DataContract(Namespace = "org.apache.reef.bridge.message")]
+    public partial class SystemOnStart
+    {
+        private const string JsonSchema = @"{""type"":""record"",""name"":""org.apache.reef.bridge.message.SystemOnStart"",""doc"":""The SystemOnStart message is sent to the CLR bridge from the Java bridge when the round trip communication path has been established."",""fields"":[{""name"":""dateTime"",""doc"":""Date time in seconds as a long since January 1, 1970"",""type"":""long""}]}";
+
+        /// <summary>
+        /// Gets the schema.
+        /// </summary>
+        public static string Schema
+        {
+            get
+            {
+                return JsonSchema;
+            }
+        }
+      
+        /// <summary>
+        /// Gets or sets the dateTime field.
+        /// </summary>
+        [DataMember]
+        public long dateTime { get; set; }
+                
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SystemOnStart"/> class.
+        /// </summary>
+        public SystemOnStart()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SystemOnStart"/> class.
+        /// </summary>
+        /// <param name="dateTime">The dateTime.</param>
+        public SystemOnStart(long dateTime)
+        {
+            this.dateTime = dateTime;
+        }
+    }
+}
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/Org.Apache.REEF.Bridge.CLR.csproj b/lang/cs/Org.Apache.REEF.Bridge.CLR/Org.Apache.REEF.Bridge.CLR.csproj
new file mode 100644
index 0000000..cc50a6f
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/Org.Apache.REEF.Bridge.CLR.csproj
@@ -0,0 +1,92 @@
+﻿<?xml version="1.0" encoding="utf-8"?>
+<!--
+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.
+-->
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <ProjectGuid>{E19FF4F8-AB45-4631-8017-E18D94D882DD}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Org.Apache.REEF.Bridge</RootNamespace>
+    <AssemblyName>Org.Apache.REEF.Bridge.CLR</AssemblyName>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <AvroBinaryDirectory>..\packages\AvroBin</AvroBinaryDirectory>
+    <AvroSchemaDirectory>..\..\common\bridge\avro</AvroSchemaDirectory>
+    <AvroTools>..\packages\Microsoft.Avro.Tools.0.1.0\lib\net451\Microsoft.Avro.Tools.exe</AvroTools>
+    <AvroLibrary>..\packages\Microsoft.Avro.Core.0.1.0\lib\net451\Microsoft.Avro.Core.dll</AvroLibrary>
+    <NewtonsoftLibrary>..\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</NewtonsoftLibrary>
+  </PropertyGroup>
+  <Import Project="$(SolutionDir)\build.props" />
+  <ItemGroup>
+    <Reference Include="Microsoft.Hadoop.Avro">
+      <HintPath>$(PackagesDir)\Microsoft.Hadoop.Avro.$(AvroVersion)\lib\net45\Microsoft.Hadoop.Avro.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.IO.Compression.FileSystem" />
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Runtime.Serialization" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Xml.Linq" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="$(SolutionDir)\SharedAssemblyInfo.cs">
+      <Link>Properties\SharedAssemblyInfo.cs</Link>
+    </Compile>
+    <Compile Include="Message\Acknowledgement.cs" />
+    <Compile Include="Message\Header.cs" />
+    <Compile Include="Message\Protocol.cs" />
+    <Compile Include="Message\SystemOnStart.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Message\README.md" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(SolutionDir)\Org.Apache.REEF.Common\Org.Apache.REEF.Common.csproj">
+      <Project>{545a0582-4105-44ce-b99c-b1379514a630}</Project>
+      <Name>ReefCommon</Name>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\Org.Apache.REEF.Tang\Org.Apache.REEF.Tang.csproj">
+      <Project>{97dbb573-3994-417a-9f69-ffa25f00d2a6}</Project>
+      <Name>Org.Apache.REEF.Tang</Name>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\Org.Apache.REEF.Utilities\Org.Apache.REEF.Utilities.csproj">
+      <Project>{79e7f89a-1dfb-45e1-8d43-d71a954aeb98}</Project>
+      <Name>Org.Apache.REEF.Utilities</Name>
+    </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\Org.Apache.REEF.Wake\Org.Apache.REEF.Wake.csproj">
+      <Project>{cdfb3464-4041-42b1-9271-83af24cd5008}</Project>
+      <Name>Org.Apache.REEF.Wake</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\Org.Apache.REEF.IO\Org.Apache.REEF.IO.csproj">
+      <Project>{dec0f0a8-dbef-4ebf-b69c-e2369c15abf1}</Project>
+      <Name>Org.Apache.REEF.IO</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(SolutionDir)\AvroCodeGeneration.Targets" Condition="Exists('$(SolutionDir)\AvroCodeGeneration.Targets')" />
+  <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
+  <Import Project="$(PackagesDir)\StyleCop.MSBuild.$(StyleCopVersion)\build\StyleCop.MSBuild.Targets" Condition="Exists('$(PackagesDir)\StyleCop.MSBuild.$(StyleCopVersion)\build\StyleCop.MSBuild.Targets')" />
+</Project>
diff --git a/lang/cs/Org.Apache.REEF.Bridge.CLR/packages.config b/lang/cs/Org.Apache.REEF.Bridge.CLR/packages.config
new file mode 100644
index 0000000..26c8722
--- /dev/null
+++ b/lang/cs/Org.Apache.REEF.Bridge.CLR/packages.config
@@ -0,0 +1,27 @@
+﻿<?xml version="1.0" encoding="utf-8"?>
+<!--
+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.
+-->
+<packages>
+  <package id="Microsoft.Avro.Core" version="0.1.0" targetFramework="net451" developmentDependency="true" />
+  <package id="Microsoft.Avro.Tools" version="0.1.0" targetFramework="net451" developmentDependency="true" />
+  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net451" developmentDependency="true" />
+  <package id="Microsoft.Hadoop.Avro" version="1.5.6" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="8.0.3" targetFramework="net45" />
+  <package id="StyleCop.MSBuild" version="4.7.49.1" targetFramework="net45" developmentDependency="true" />
+</packages>
diff --git a/lang/cs/Org.Apache.REEF.sln b/lang/cs/Org.Apache.REEF.sln
index 7678d9a..3889f24 100644
--- a/lang/cs/Org.Apache.REEF.sln
+++ b/lang/cs/Org.Apache.REEF.sln
Binary files differ