How to route JWT Token request from client app, formed with double slashes? - asp.net-core

Question

Currently we have a WPF client app that request bearer tokens to an ASP MVC app using OAuth.
This configuration takes place at startup when an endpoint is defined:
OAuthOptions = new OAuthAuthorizationServerOptions
{
TokenEndpointPath = new PathString("/Token"),
Provider = new ApplicationOAuthProvider(PublicClientId),
AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
AllowInsecureHttp = true
};
The client WPF application requests tokens by issuing a POST request to [resourceBaseAddress/Token]. The request content I will assume is not relevante to my question.
The problem is that my "resourceBaseAddress" contains a trailing forward slash, so the request is formed in a way such as http://contoso.com//Token (note the double slash). And it currently works.
But now that we are migrating to ASP.NET Core and by consequence I had to add a controller with (Jwt) Token action, I am experiencing problems to route this request with double forward slashes.
As I cannot change code on client app, how can I configure this controller method properly?

Answer 1

How about a middleware that rewrites the request path? Did you try something like this?
Example:
app.Use(async (context, next) =>
{
var url = context.Request.Path.Value;
if (url.EndsWith("//Token"))
{
// rewrite and continue processing
context.Request.Path = "/Token";
}
await next();
});
app.UseRouting();
And a simple controller like this:
[Route("[controller]")]
public class TokenController : ControllerBase
{
[HttpPost]
public string Post()
{
return "Token";
}
}