I've followed the Quickstart in the documentation page and have a working configuration of three services (IdentityServer, one Api service, one ASPNET MVC application) using IdentityServer for authentication.
Everything works perfectly (login, login, authorization, etc.) until after 1 hour when the access_token expires. At this point, the MVC application starts to receive (correctly) a 401 from the API service (since the token is expired). At that point, I know I should use the refresh_token to get a new access_token.
I was looking for a mechanism that automatically refreshed the access_token and stumbled upon this: https://github.com/mderriey/TokenRenewal/blob/master/src/MvcClient/Startup.cs (from this answer). I tried to use that but it didn't work (the TokenEndpointResponse
was null even though the authentication was successful).
I understand how to use a refresh_token
to get a new access_token
, but after I have it, how would I go inserting it back into the cookie so that future request have access to the new tokens?
The McvHybrid sample has a good example for getting the new access_token
and refresh_token
back into the principal. Here's a link to the github file with the code, which is located in RenewTokens()
as shown below.
public async Task<IActionResult> RenewTokens()
{
var disco = await DiscoveryClient.GetAsync(Constants.Authority);
if (disco.IsError) throw new Exception(disco.Error);
var tokenClient = new TokenClient(disco.TokenEndpoint, "mvc.hybrid", "secret");
var rt = await HttpContext.Authentication.GetTokenAsync("refresh_token");
var tokenResult = await tokenClient.RequestRefreshTokenAsync(rt);
if (!tokenResult.IsError)
{
var old_id_token = await HttpContext.Authentication.GetTokenAsync("id_token");
var new_access_token = tokenResult.AccessToken;
var new_refresh_token = tokenResult.RefreshToken;
var tokens = new List<AuthenticationToken>();
tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.IdToken, Value = old_id_token });
tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.AccessToken, Value = new_access_token });
tokens.Add(new AuthenticationToken { Name = OpenIdConnectParameterNames.RefreshToken, Value = new_refresh_token });
var expiresAt = DateTime.UtcNow + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
tokens.Add(new AuthenticationToken { Name = "expires_at", Value = expiresAt.ToString("o", CultureInfo.InvariantCulture) });
var info = await HttpContext.Authentication.GetAuthenticateInfoAsync("Cookies");
info.Properties.StoreTokens(tokens);
await HttpContext.Authentication.SignInAsync("Cookies", info.Principal, info.Properties);
return Redirect("~/Home/Secure");
}
ViewData["Error"] = tokenResult.Error;
return View("Error");
}