authentication - Authenticating users with IdentityServer4 without a Login page -


we built xamarin.forms app operates identityserver4 client using webview implementation approach, worked perfectly. however, apple not accept our app in store because want authentication , new account creation occur within app. therefore, i've been trying post credentials entered within app's login screen identityserver hope can simulate same process occurs when user enters credentials , submits (posts) login page:

 public async task<iactionresult> authenticate([frombody] userloginviewmodel model)     {         string result = string.empty;          try         {             if (!string.isnullorwhitespace(model.username))             {                 userkey user = await _usermanager.findbynameasync(model.username.tolowerinvariant());                  if (string.isnullorempty(user?.ssid))                 { result = authenticateresultenum.userdoesnotexist.tostring(); }                 else                 {                     var signin_result = await _signinmanager.passwordsigninasync(user, model.password, model.rememberlogin, false);                     if (signin_result.succeeded)                     {                         if (_interactionservice.isvalidreturnurl(model.returnurl))                         {                             localredirect(model.returnurl);                         }                     }                     else if (signin_result.islockedout)                     { result = authenticateresultenum.accountlocked.tostring(); }                 }             }         }         catch (exception ex)         {             result = authenticateresultenum.error.tostring();             _logger.exceptionasync(ex);         }          return new jsonresult(result);     }

however, i've had no luck process because of redirects involved. there well-established way of authenticating user identityserver without showing login page, instead posting credentials , authorization request apps login form? other well-known apps appear able so, i'm seeking confirmation can done identityserver4.

thank you, andrew


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