# 13.2: SSL

## Add SSL for Release Builds

SSL (Secure Sockets Layer) is a security technology that encrypts communication between a web browser and a server, using HTTPS (HTTP Secure) instead of HTTP (Hypertext Transfer Protocol). Here we will set the app up to require HTTPS unless we are in debug mode.

1. Open **ElevenNote.Web -> Controllers -> AccountController**
2. Add this annotation above the routes.

   ```csharp
    namespace ElevenNote.Web.Controllers
    {

    #if !DEBUG
        [RequireHttps]

    #endif
    [Authorize]
    public class AccountController : Controller
   ```

   This code includes what are called `#if` and `#endif` preprocessor directives. These act essentially like a standard if statement but are used for determining some things at the beginning of compiling the code instead of while running it. An `#if` directive must always be followed at some point by an `#endif`. Here's [the Microsoft documentation](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/preprocessor-directives/) on preprocessor directives in C#, if you're interested.
3. Change the tab from **Debug** to **Release**. Notice the code is commented/un-commented depending on the setting.

   ![Debug v Release](https://3258533034-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LAU8YfMZK4G04fkoGGv%2F-LAxmw8y5qK1VLyUF4ln%2F-LAxmxhrS859_VBUwOUW%2F13.2-A.png?generation=1524676419795818\&alt=media)
4. Set the drop-down back to **Debug** and ![Git](https://3258533034-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LAU8YfMZK4G04fkoGGv%2F-LAwyv0-ttugakHO6zeV%2F-LAwyxUd0dcYSLXYb-5s%2Fdevicons_github_badge.png?generation=1524662787257488\&alt=media)

[Next,](https://eleven-fifty-academy.gitbook.io/dotnet-201-elevennote/elevennote-api-parts-13-19/part-14-webapi/14.0-webapisetup) we'll set up the WebAPI project.


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