ASP.NET Core redirect http to https

Question

I have created a redirect rules in my web.config to redirect my website from http to https. The issue i have is that every single link on the website is now https. I have a lots of link to other website which don't have SSL and therefore i get certificate errors. This is what i have done:

  <rewrite>
  <rules>
    <rule name="HTTP/S to HTTPS Redirect" enabled="true" stopProcessing="true">
      <match url="(.*)" />
      <conditions logicalGrouping="MatchAny">
        <add input="{SERVER_PORT_SECURE}" pattern="^0$" />
      </conditions>
      <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" redirectType="Permanent" />
    </rule>
  </rules>
</rewrite>

How can i redirect https only for my domain and not every links on my website?

Answer 1

Edit: While it still works, things changed a bit since I wrote this answer. Please check DLMAN's more up to date answer: https://stackoverflow.com/a/56800707/844207

In asp.net Core 2 you can use an URL Rewrite independent of the Web Server, by using app.UseRewriter in Startup.Configure, like this:

        if (env.IsDevelopment())
        {
            app.UseBrowserLink();
            app.UseDeveloperExceptionPage();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");

            // todo: replace with app.UseHsts(); once the feature will be stable
            app.UseRewriter(new RewriteOptions().AddRedirectToHttps(StatusCodes.Status301MovedPermanently, 443));
        }

Answer 2

Actually (ASP.NET Core 1.1) there is a middleware named Rewrite that includes a rule for what you are trying to do.

You can use it on Startup.cs like this:

var options = new RewriteOptions()
    .AddRedirectToHttpsPermanent();

app.UseRewriter(options);

Answer 3

In ASP.NET Core 2.2 you should use Startup.cs settings for redirect http to https

so add this in ConfigureServices :

public void ConfigureServices(IServiceCollection services)
{
    services.AddHttpsRedirection(options =>
    {
        options.HttpsPort = 443;
    });                           // <=== Add this (AddHttpsRedirection) =====

    services.AddRazorPages();  
}

and add this in Configure :

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
        app.UseDatabaseErrorPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");
        app.UseHsts();            // <=== Add this =====
    }

    app.UseHttpsRedirection();    // <=== Add this =====
}

in launchSettings.json check blow items exsits:

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:63278",
      "sslPort": 44377      // <<===  check this port exists.
    }
  },
  "YOUR_PROJECT_NAME": {
      "commandName": "Project",
      "dotnetRunMessages": "true",
      "launchBrowser": true,
      "applicationUrl": "https://localhost:5001;http://localhost:5000",  // <=== check https url exists.
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

then enjoy it.

Answer 4

asp.net core < 2 just put this code into your startup.cs

        // IHostingEnvironment (stored in _env) is injected into the Startup class.
        if (!_hostingEnvironment.IsDevelopment())
        {
            services.Configure<MvcOptions>(options =>
            {
                options.Filters.Add(new RequireHttpsAttribute());
            });
        }

Answer 5

You will need to add also the following code in .net core 2.1

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseExceptionHandler("/Error");
        app.UseHsts();
    }

    app.UseHttpsRedirection();
    app.UseStaticFiles();
    app.UseCookiePolicy();

    app.UseMvc();
}

and the following part in service configuration

       services.AddHttpsRedirection(options =>
       {
        options.RedirectStatusCode = StatusCodes.Status307TemporaryRedirect;
        options.HttpsPort = 5001;
        });

Answer 6

In ASP.NET Core 2.1 just use this:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseExceptionHandler("/Error");
        app.UseHsts();   // <-- Add this !!!!!
    }

    app.UseHttpsRedirection(); // <-- Add this !!!!!
    app.UseStaticFiles();
    app.UseCookiePolicy();

    app.UseMvc();
}