ASP.NET Core application is created using Visual Studion 2019 ASP.NET Core Application project template.
Its _layout.cshtml contains css file paths relative to application root directory:
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - WebApplication1</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" />
</head>
This application is running in Debian Linux 10 with apache in nettest virtual directory using instructions from https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-apache
Apache mod_proxy and header modules are user to forward https requests to kestrel server. Apache conf file:
<Location "/nettest">
RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
ProxyPreserveHost On
ProxyPass http://127.0.0.1:5000/
ProxyPassReverse http://127.0.0.1:5000/
</location>
Application does not find css files. Browser view source shows that absolute paths are rendered in html code:
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Home Page - WebApplication1</title>
<link rel="stylesheet" href="/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="/css/site.css" />
</head>
how to force to render proper URLs, eq. relative from current folder like
lib/bootstrap/dist/css/bootstrap.min.css
or absolute from application virtual directory:
/nettest/lib/bootstrap/dist/css/bootstrap.min.css
** Update **
After changing order css files are found. However Privacy link in sample applicatino tempate is still not working.
ASP.NET template contains:
<div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</li>
</ul>
</div>
In browser in appears as
<div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" href="/nettest">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" href="/nettest/Home/Privacy">Privacy</a>
</li>
</ul>
</div>
Home link works but Privacy link throws 404 error.
In template HomeController is is defined:
public IActionResult Privacy()
{
return View();
}
It works when application is running under Visual Studio. How to make privary link to work when application is running in Apache virtual directory ?
Configure method:
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
// https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-apache?view=aspnetcore-2.2
app.UseForwardedHeaders(new ForwardedHeadersOptions
{
ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
});
app.UseAuthentication();
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
// origoli: app.UseStaticFiles();
// https://stackoverflow.com/questions/46593999/how-to-host-a-asp-net-core-application-under-a-sub-folder
// https://forums.asp.net/post/6327484.aspx
// because the middleware
//app.UsePathBase("/nettest");
// strips the /nettest from the pipeline, the static file handler middleware needs to come first:
app.UseStaticFiles(new StaticFileOptions
{
RequestPath = new PathString("/nettest")
});
app.UsePathBase("/nettest");
// in asp.net core, you control the order of middleware and must get it correct.
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
Issue might be with the order you defined UseStaticFiles and UseAuthentication. Move UseStaticFiles above UseAuthentication. A better approach is to use Apache itself to render the static files.