diff --git a/nanoFramework.WebServer/Authentication.cs b/nanoFramework.WebServer/Authentication.cs
index 952bd93..c237fb8 100644
--- a/nanoFramework.WebServer/Authentication.cs
+++ b/nanoFramework.WebServer/Authentication.cs
@@ -10,7 +10,7 @@
 namespace nanoFramework.WebServer
 {
     /// <summary>
-    /// The authentication to be used by the server
+    /// The authentication to be used by the server.
     /// </summary>
     public class Authentication
     {
@@ -20,7 +20,7 @@ public class Authentication
         public AuthenticationType AuthenticationType { get; internal set; }
 
         /// <summary>
-        /// The network credential user and password
+        /// The network credential user and password.
         /// </summary>
         public NetworkCredential Credentials { get; internal set; } = null;
 
@@ -29,18 +29,29 @@ public class Authentication
         /// </summary>
         public string ApiKey { get; internal set; } = null;
 
+        /// <summary>
+        /// Creates an autentication class from a credential.
+        /// </summary>
+        /// <param name="credential">The credentials.</param>
         public Authentication(NetworkCredential credential)
         {
             AuthenticationType = AuthenticationType.Basic;
             Credentials = credential;
         }
 
+        /// <summary>
+        /// Creates an authentication from a key.
+        /// </summary>
+        /// <param name="apiKey">The key.</param>
         public Authentication(string apiKey)
         {
             AuthenticationType = AuthenticationType.ApiKey;
             ApiKey = apiKey;
         }
 
+        /// <summary>
+        /// Creates an empty authenticate.
+        /// </summary>
         public Authentication()
         {
             AuthenticationType = AuthenticationType.None;
diff --git a/nanoFramework.WebServer/MethodAttribute.cs b/nanoFramework.WebServer/MethodAttribute.cs
index 5f489d4..7b3e8fe 100644
--- a/nanoFramework.WebServer/MethodAttribute.cs
+++ b/nanoFramework.WebServer/MethodAttribute.cs
@@ -8,13 +8,20 @@
 namespace nanoFramework.WebServer
 {
     /// <summary>
-    /// The HTTP Method
+    /// The HTTP Method.
     /// </summary>
     [AttributeUsage(AttributeTargets.Method)]
     public class MethodAttribute : Attribute
     {
+        /// <summary>
+        /// Gets or sets the method.
+        /// </summary>
         public string Method { get; set; }
 
+        /// <summary>
+        /// Creates a method attribute.
+        /// </summary>
+        /// <param name="method">The method.</param>
         public MethodAttribute(string method)
         {
             Method = method;
diff --git a/nanoFramework.WebServer/RouteAttribute.cs b/nanoFramework.WebServer/RouteAttribute.cs
index d1bdf6e..bc6f979 100644
--- a/nanoFramework.WebServer/RouteAttribute.cs
+++ b/nanoFramework.WebServer/RouteAttribute.cs
@@ -8,17 +8,20 @@
 namespace nanoFramework.WebServer
 {
     /// <summary>
-    /// Route custom attribute
+    /// Route custom attribute.
     /// </summary>
     [AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
     public class RouteAttribute : Attribute
     {
+        /// <summary>
+        /// Gets or sets the route.
+        /// </summary>
         public string Route { get; set; }
 
         /// <summary>
-        /// A route attribute
+        /// A route attribute.
         /// </summary>
-        /// <param name="route">The route like route/second/third</param>
+        /// <param name="route">The complete route like 'route/second/third'.</param>
         public RouteAttribute(string route)
         {
             Route = route;
diff --git a/nanoFramework.WebServer/WebServer.cs b/nanoFramework.WebServer/WebServer.cs
index 924450e..1cba312 100644
--- a/nanoFramework.WebServer/WebServer.cs
+++ b/nanoFramework.WebServer/WebServer.cs
@@ -465,10 +465,11 @@ public static void SendFileOverHTTP(HttpListenerResponse response, StorageFile s
         /// <param name="response"><see cref="HttpListenerResponse"/> to send the content over.</param>
         /// <param name="fileName">Name of the file to send over <see cref="HttpListenerResponse"/>.</param>
         /// <param name="content">Content of the file to send.</param>
-        /// /// <param name="contentType">The type of file, if empty string, then will use auto detection</param>
+        /// <param name="contentType">The type of file, if empty string, then will use auto detection.</param>
         public static void SendFileOverHTTP(HttpListenerResponse response, string fileName, byte[] content, string contentType = "")
         {
-            contentType = contentType == "" ? GetContentTypeFromFileName(fileName.Substring(fileName.LastIndexOf('.'))) : contentType;
+            // If no extension, we will get the full file name
+            contentType = contentType == "" ? GetContentTypeFromFileName(fileName.Substring(fileName.LastIndexOf('.') + 1)) : contentType;
             response.ContentType = contentType;
             response.ContentLength64 = content.Length;
 
@@ -483,8 +484,6 @@ public static void SendFileOverHTTP(HttpListenerResponse response, string fileNa
                 // Writes data to output stream
                 response.OutputStream.Write(content, (int)bytesSent, (int)bytesToSend);
 
-                // allow some time to physically send the bits. Can be reduce to 10 or even less if not too much other code running in parallel
-
                 // update bytes sent
                 bytesSent += bytesToSend;
             }
@@ -676,49 +675,58 @@ private void ListInterfaces()
         /// <summary>
         /// Get the MIME-type for a file name.
         /// </summary>
-        /// <param name="fileName">File name to get content type for.</param>
+        /// <param name="fileExt">File extension to get content type for.</param>
         /// <returns>The MIME-type for the file name.</returns>
-        private static string GetContentTypeFromFileName(string fileName)
+        private static string GetContentTypeFromFileName(string fileExt)
         {
             // normalize to lower case to speed comparison
-            fileName = fileName.ToLower();
+            fileExt = fileExt.ToLower();
 
             string contentType = "text/html";
 
             //determine the type of file for the http header
-            if (fileName == ".cs" ||
-                fileName == ".txt" ||
-                fileName == ".csproj"
-            )
+            if (fileExt == "cs" ||
+                fileExt == "txt" ||
+                fileExt == "csproj")
             {
                 contentType = "text/plain";
             }
-            else if (fileName == ".jpg" ||
-                fileName == ".bmp" ||
-                fileName == ".jpeg" ||
-                fileName == ".png"
-              )
+            else if (fileExt == "jpg" ||
+                fileExt == "jpeg" ||
+                fileExt == "jpe")
+            {
+                contentType = "image/jpeg";
+            }
+            else if (fileExt == "bmp" ||
+                fileExt == "png" ||
+                fileExt == "gif" ||
+                fileExt == "ief")
             {
-                contentType = "image";
+                contentType = $"image/{fileExt}";
             }
-            else if (fileName == ".htm" ||
-                fileName == ".html"
-              )
+            else if (fileExt == "htm" ||
+                fileExt == "html")
             {
                 contentType = "text/html";
             }
-            else if (fileName == ".mp3")
+            else if (fileExt == "mp3")
             {
                 contentType = "audio/mpeg";
             }
-            else if (fileName == ".css")
+            else if (fileExt == "css")
             {
                 contentType = "text/css";
             }
-            else if (fileName == ".ico")
+            else if (fileExt == "ico")
             {
                 contentType = "image/x-icon";
             }
+            else if (fileExt == "zip" ||
+                fileExt == "json" ||
+                fileExt == "pdf")
+            {
+                contentType = $"application/{fileExt}";
+            }
 
             return contentType;
         }
diff --git a/nanoFramework.WebServer/nanoFramework.WebServer.nfproj b/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
index 44aee1e..ade4377 100644
--- a/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
+++ b/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
@@ -91,6 +91,9 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="packages.lock.json" />
+  </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
   <ProjectExtensions>
     <ProjectCapabilities>