From 8a10c9800d79cb2a88a6e9bdb9cd4a27f8379d48 Mon Sep 17 00:00:00 2001
From: Luke Latham <GuardRex@users.noreply.github.com>
Date: Wed, 1 Feb 2017 18:26:26 -0600
Subject: [PATCH] Add OnPrepareResponse option w/resp header to static files
 doc (#2640)

* Create StartupAddHeader.cs

* Add files via upload

* Update static-files.md

* Update static-files.md

* Update StartupBrowse.cs

* Update StartupServeUnknownFileTypes.cs

* Update StartupStaticFiles.cs

* Update StartupTwoStaticFiles.cs

* Update StartupUseFileServer.cs

* Update static-files.md
---
 aspnetcore/fundamentals/static-files.md       |   6 ++++
 .../static-files/_static/add-header.png       | Bin 0 -> 21433 bytes
 .../static-files/sample/StartupAddHeader.cs   |  32 ++++++++++++++++++
 .../static-files/sample/StartupBrowse.cs      |   4 +--
 .../sample/StartupServeUnknownFileTypes.cs    |   6 ++--
 .../static-files/sample/StartupStaticFiles.cs |   4 +--
 .../sample/StartupTwoStaticFiles.cs           |   6 ++--
 .../sample/StartupUseFileServer.cs            |   6 ++--
 8 files changed, 51 insertions(+), 13 deletions(-)
 create mode 100644 aspnetcore/fundamentals/static-files/_static/add-header.png
 create mode 100644 aspnetcore/fundamentals/static-files/sample/StartupAddHeader.cs

diff --git a/aspnetcore/fundamentals/static-files.md b/aspnetcore/fundamentals/static-files.md
index 181c63b5e5..cde50c3d05 100644
--- a/aspnetcore/fundamentals/static-files.md
+++ b/aspnetcore/fundamentals/static-files.md
@@ -59,6 +59,12 @@ For a request to access *test.png*, configure the static files middleware as fol
 
 A request to `http://<app>/StaticFiles/test.png` will serve the *test.png* file.
 
+`StaticFileOptions()` can set response headers. For example, the code below sets up static file serving from the *wwwroot* folder and sets the `Cache-Control` header to make them publicly cacheable for 10 minutes (600 seconds):
+
+[!code-csharp[Main](../fundamentals/static-files/sample/StartupAddHeader.cs?name=snippet1)]
+
+![Response headers showing the Cache-Control header has been added](static-files/_static/add-header.png)
+
 ## Static file authorization
 
 The static file module provides **no** authorization checks. Any files served by it, including those under *wwwroot* are publicly available. To serve files based on authorization:
diff --git a/aspnetcore/fundamentals/static-files/_static/add-header.png b/aspnetcore/fundamentals/static-files/_static/add-header.png
new file mode 100644
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HcmV?d00001

diff --git a/aspnetcore/fundamentals/static-files/sample/StartupAddHeader.cs b/aspnetcore/fundamentals/static-files/sample/StartupAddHeader.cs
new file mode 100644
index 0000000000..4b8b8cd535
--- /dev/null
+++ b/aspnetcore/fundamentals/static-files/sample/StartupAddHeader.cs
@@ -0,0 +1,32 @@
+using System.IO;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.FileProviders;
+using Microsoft.Extensions.Logging;
+
+namespace StaticFiles
+{
+    public class StartupAddHeader
+    {
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        #region snippet1
+        public void Configure(IApplicationBuilder app)
+        {
+            app.UseStaticFiles(new StaticFileOptions()
+            {
+                OnPrepareResponse = ctx =>
+                {
+                    ctx.Context.Response.Headers.Append("Cache-Control", "public,max-age=600");
+                }
+            });
+        }
+        #endregion
+    }
+}
diff --git a/aspnetcore/fundamentals/static-files/sample/StartupBrowse.cs b/aspnetcore/fundamentals/static-files/sample/StartupBrowse.cs
index 9f70a04790..8c1d1c5116 100644
--- a/aspnetcore/fundamentals/static-files/sample/StartupBrowse.cs
+++ b/aspnetcore/fundamentals/static-files/sample/StartupBrowse.cs
@@ -20,7 +20,7 @@ namespace StaticFiles
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         #region snippet1
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app)
         {
             app.UseStaticFiles(); // For the wwwroot folder
 
@@ -40,4 +40,4 @@ namespace StaticFiles
         }
         #endregion
     }
-}
\ No newline at end of file
+}
diff --git a/aspnetcore/fundamentals/static-files/sample/StartupServeUnknownFileTypes.cs b/aspnetcore/fundamentals/static-files/sample/StartupServeUnknownFileTypes.cs
index 72fc457c26..03ba3d399b 100644
--- a/aspnetcore/fundamentals/static-files/sample/StartupServeUnknownFileTypes.cs
+++ b/aspnetcore/fundamentals/static-files/sample/StartupServeUnknownFileTypes.cs
@@ -14,9 +14,9 @@ namespace StaticFiles
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         #region snippet1
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app)
         {
-            app.UseStaticFiles(new StaticFileOptions
+            app.UseStaticFiles(new StaticFileOptions()
             {
                 ServeUnknownFileTypes = true,
                 DefaultContentType = "image/png"
@@ -24,4 +24,4 @@ namespace StaticFiles
         }
         #endregion
     }
-}
\ No newline at end of file
+}
diff --git a/aspnetcore/fundamentals/static-files/sample/StartupStaticFiles.cs b/aspnetcore/fundamentals/static-files/sample/StartupStaticFiles.cs
index 9899dc4cc7..298000f06f 100644
--- a/aspnetcore/fundamentals/static-files/sample/StartupStaticFiles.cs
+++ b/aspnetcore/fundamentals/static-files/sample/StartupStaticFiles.cs
@@ -17,10 +17,10 @@ namespace StaticFiles
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         #region snippet1
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app)
         {
             app.UseStaticFiles();
         }
         #endregion
     }
-}
\ No newline at end of file
+}
diff --git a/aspnetcore/fundamentals/static-files/sample/StartupTwoStaticFiles.cs b/aspnetcore/fundamentals/static-files/sample/StartupTwoStaticFiles.cs
index c1757967ea..53045f1cea 100644
--- a/aspnetcore/fundamentals/static-files/sample/StartupTwoStaticFiles.cs
+++ b/aspnetcore/fundamentals/static-files/sample/StartupTwoStaticFiles.cs
@@ -17,9 +17,9 @@ namespace StaticFiles
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         #region snippet1
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app)
         {
-            app.UseStaticFiles();
+            app.UseStaticFiles(); // For the wwwroot folder
 
             app.UseStaticFiles(new StaticFileOptions()
             {
@@ -30,4 +30,4 @@ namespace StaticFiles
         }
         #endregion
     }
-}
\ No newline at end of file
+}
diff --git a/aspnetcore/fundamentals/static-files/sample/StartupUseFileServer.cs b/aspnetcore/fundamentals/static-files/sample/StartupUseFileServer.cs
index 29239e758b..b9e408a6d3 100644
--- a/aspnetcore/fundamentals/static-files/sample/StartupUseFileServer.cs
+++ b/aspnetcore/fundamentals/static-files/sample/StartupUseFileServer.cs
@@ -20,9 +20,9 @@ namespace StaticFiles
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         #region snippet1
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app)
         {
-            app.UseStaticFiles();
+            app.UseStaticFiles(); // For the wwwroot folder
 
             app.UseFileServer(new FileServerOptions()
             {
@@ -34,4 +34,4 @@ namespace StaticFiles
         }
         #endregion
     }
-}
\ No newline at end of file
+}