/// <summary>
/// Executes the middleware.
/// </summary>
/// <param name="context">The <see cref="HttpContext"/> for the current request.</param>
/// <returns>A task that represents the execution of this middleware.</returns>
public Task Invoke(HttpContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var rewriteContext = new RewriteContext
{
HttpContext = context,
StaticFileProvider = _fileProvider,
Logger = _logger,
Result = RuleResult.ContinueRules
};
var originalPath = context.Request.Path;
RunRules(rewriteContext, _options, context, _logger);
if (rewriteContext.Result == RuleResult.EndResponse)
{
return(Task.CompletedTask);
}
// If a rule changed the path we want routing to find a new endpoint
if (originalPath != context.Request.Path)
{
if (_options.BranchedNext is not null)
{
// An endpoint may have already been set. Since we're going to re-invoke the middleware pipeline we need to reset
// the endpoint and route values to ensure things are re-calculated.
context.SetEndpoint(endpoint: null);
var routeValuesFeature = context.Features.Get <IRouteValuesFeature>();
if (routeValuesFeature is not null)
{
routeValuesFeature.RouteValues = null !;
}
return(_options.BranchedNext(context));
}
}
return(_next(context));
}
