diff --git a/EonaCat.Connections.Client/Program.cs b/EonaCat.Connections.Client/Program.cs
index f6bfa15..520f5a9 100644
--- a/EonaCat.Connections.Client/Program.cs
+++ b/EonaCat.Connections.Client/Program.cs
@@ -1,9 +1,10 @@
-using EonaCat.Connections;
-using EonaCat.Connections.Models;
-using System.Text;
+using EonaCat.Connections.Models;
 
 namespace EonaCat.Connections.Client.Example
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Program
     {
         private static NetworkClient _client;
@@ -16,6 +17,7 @@ namespace EonaCat.Connections.Client.Example
             {
                 Console.Write("Enter message to send (or 'exit' to quit): ");
                 var message = Console.ReadLine();
+
                 if (!string.IsNullOrEmpty(message) && message.Equals("exit", StringComparison.OrdinalIgnoreCase))
                 {
                     await _client.DisconnectAsync().ConfigureAwait(false);
diff --git a/EonaCat.Connections.Server/Program.cs b/EonaCat.Connections.Server/Program.cs
index 1247624..57efa1c 100644
--- a/EonaCat.Connections.Server/Program.cs
+++ b/EonaCat.Connections.Server/Program.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.Connections.Server.Example
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Program
     {
         private static NetworkServer _server;
diff --git a/EonaCat.Connections/EventArguments/ConnectionEventArgs.cs b/EonaCat.Connections/EventArguments/ConnectionEventArgs.cs
index 54b50ac..f8eb819 100644
--- a/EonaCat.Connections/EventArguments/ConnectionEventArgs.cs
+++ b/EonaCat.Connections/EventArguments/ConnectionEventArgs.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.Connections.EventArguments
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class ConnectionEventArgs : EventArgs
     {
         public string ClientId { get; set; }
diff --git a/EonaCat.Connections/EventArguments/DataReceivedEventArgs.cs b/EonaCat.Connections/EventArguments/DataReceivedEventArgs.cs
index f6b2ef1..57763ea 100644
--- a/EonaCat.Connections/EventArguments/DataReceivedEventArgs.cs
+++ b/EonaCat.Connections/EventArguments/DataReceivedEventArgs.cs
@@ -2,6 +2,9 @@
 
 namespace EonaCat.Connections
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class DataReceivedEventArgs : EventArgs
     {
         public string ClientId { get; internal set; }
diff --git a/EonaCat.Connections/EventArguments/ErrorEventArgs.cs b/EonaCat.Connections/EventArguments/ErrorEventArgs.cs
index 839d75f..ad86f07 100644
--- a/EonaCat.Connections/EventArguments/ErrorEventArgs.cs
+++ b/EonaCat.Connections/EventArguments/ErrorEventArgs.cs
@@ -1,5 +1,8 @@
 namespace EonaCat.Connections.EventArguments
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class ErrorEventArgs : EventArgs
     {
         public string ClientId { get; set; }
diff --git a/EonaCat.Connections/Helpers/AesKeyExchange.cs b/EonaCat.Connections/Helpers/AesKeyExchange.cs
index 11ed60f..4807e65 100644
--- a/EonaCat.Connections/Helpers/AesKeyExchange.cs
+++ b/EonaCat.Connections/Helpers/AesKeyExchange.cs
@@ -3,6 +3,9 @@ using System.Text;
 
 namespace EonaCat.Connections.Helpers
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public static class AesKeyExchange
     {
         private static readonly string Pepper = "EonaCat.Connections.Salt";
diff --git a/EonaCat.Connections/Helpers/StringHelpers.cs b/EonaCat.Connections/Helpers/StringHelpers.cs
index 00fe1af..f2c1a7c 100644
--- a/EonaCat.Connections/Helpers/StringHelpers.cs
+++ b/EonaCat.Connections/Helpers/StringHelpers.cs
@@ -2,6 +2,9 @@
 {
     internal class StringHelper
     {
+        // This file is part of the EonaCat project(s) which is released under the Apache License.
+        // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
         public static string GetTextBetweenTags(string message, string startTag, string endTag)
         {
             int startIndex = message.IndexOf(startTag);
diff --git a/EonaCat.Connections/Models/Configuration.cs b/EonaCat.Connections/Models/Configuration.cs
index 38c5650..9b239fe 100644
--- a/EonaCat.Connections/Models/Configuration.cs
+++ b/EonaCat.Connections/Models/Configuration.cs
@@ -4,6 +4,9 @@ using System.Security.Cryptography.X509Certificates;
 
 namespace EonaCat.Connections.Models
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Configuration
     {
         public bool EnableAutoReconnect { get; set; } = true;
diff --git a/EonaCat.Connections/Models/Connection.cs b/EonaCat.Connections/Models/Connection.cs
index 82f04cf..51f1625 100644
--- a/EonaCat.Connections/Models/Connection.cs
+++ b/EonaCat.Connections/Models/Connection.cs
@@ -4,6 +4,9 @@ using System.Security.Cryptography;
 
 namespace EonaCat.Connections.Models
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Connection
     {
         public string Id { get; set; }
diff --git a/EonaCat.Connections/Models/Stats.cs b/EonaCat.Connections/Models/Stats.cs
index 0112d4d..aa1150d 100644
--- a/EonaCat.Connections/Models/Stats.cs
+++ b/EonaCat.Connections/Models/Stats.cs
@@ -1,6 +1,8 @@
 namespace EonaCat.Connections
 {
-    // Connection statistics
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Stats
     {
         public int ActiveConnections { get; set; }
diff --git a/EonaCat.Connections/NetworkClient.cs b/EonaCat.Connections/NetworkClient.cs
index afc0501..817bef5 100644
--- a/EonaCat.Connections/NetworkClient.cs
+++ b/EonaCat.Connections/NetworkClient.cs
@@ -11,6 +11,9 @@ using ErrorEventArgs = EonaCat.Connections.EventArguments.ErrorEventArgs;
 
 namespace EonaCat.Connections
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class NetworkClient
     {
         private readonly Configuration _config;
diff --git a/EonaCat.Connections/NetworkServer.cs b/EonaCat.Connections/NetworkServer.cs
index d9f151c..47a983c 100644
--- a/EonaCat.Connections/NetworkServer.cs
+++ b/EonaCat.Connections/NetworkServer.cs
@@ -13,6 +13,9 @@ using ErrorEventArgs = EonaCat.Connections.EventArguments.ErrorEventArgs;
 
 namespace EonaCat.Connections
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class NetworkServer
     {
         private readonly Configuration _config;
diff --git a/EonaCat.Connections/Processors/JsonDataProcessor.cs b/EonaCat.Connections/Processors/JsonDataProcessor.cs
index dab84cc..67a5670 100644
--- a/EonaCat.Connections/Processors/JsonDataProcessor.cs
+++ b/EonaCat.Connections/Processors/JsonDataProcessor.cs
@@ -7,6 +7,9 @@ using Timer = System.Timers.Timer;
 
 namespace EonaCat.Connections.Processors
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class JsonDataProcessor<TMessage> : IDisposable
     {
         public int MaxAllowedBufferSize = 20 * 1024 * 1024;
diff --git a/EonaCat.Connections/ProtocolType.cs b/EonaCat.Connections/ProtocolType.cs
index 1440cd1..217305b 100644
--- a/EonaCat.Connections/ProtocolType.cs
+++ b/EonaCat.Connections/ProtocolType.cs
@@ -1,6 +1,8 @@
 namespace EonaCat.Connections
 {
-    // Protocol types
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public enum ProtocolType
     {
         TCP,