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using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Server.Middleware
{
/// <summary>
/// Redirect requests to robots.txt to web/robots.txt.
/// </summary>
public class RobotsRedirectionMiddleware
{
private readonly RequestDelegate _next;
private readonly ILogger<RobotsRedirectionMiddleware> _logger;
/// <summary>
/// Initializes a new instance of the <see cref="RobotsRedirectionMiddleware"/> class.
/// </summary>
/// <param name="next">The next delegate in the pipeline.</param>
/// <param name="logger">The logger.</param>
public RobotsRedirectionMiddleware(
RequestDelegate next,
ILogger<RobotsRedirectionMiddleware> logger)
{
_next = next;
_logger = logger;
}
/// <summary>
/// Executes the middleware action.
/// </summary>
/// <param name="httpContext">The current HTTP context.</param>
/// <returns>The async task.</returns>
public async Task Invoke(HttpContext httpContext)
{
var localPath = httpContext.Request.Path.ToString();
if (string.Equals(localPath, "/robots.txt", StringComparison.OrdinalIgnoreCase))
{
_logger.LogDebug("Redirecting robots.txt request to web/robots.txt");
httpContext.Response.Redirect("web/robots.txt");
return;
}
await _next(httpContext).ConfigureAwait(false);
}
}
}
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