php - Silex - can't use session on post request -

hey have problem set session on post requests. example, request working corectly. have tried redirect after post request doesn't work too. there sections of code;

not working:

$app->post(     '/localauth',     'usercontroller::serviceloginauth' ) ->after(     function() {         session_name('auth')         session_start();     } ); 

working without redirect in serviceloginauth:

// redirect '/authsuccess'     $app->post('/localauth', 'usercontroller::serviceloginauth'); $app->get('/authsuccess', 'usercontroller::serviceloginauthsuccess'); 

i use http post angular code:

        $http({       url: apiconst.apiurl+'/localauth',       method: "post",       data: $.param({         login: user.login,         pass:user.pass       }),       headers: {         'content-type': 'application/x-www-form-urlencoded; charset=utf-8'       }   }).then(function(response){       console.log(response);       $cookies.put('csrftoken',response.data.token);     }).catch(function(){       console.log(err);      }); 

thanks help!

why don't use silex sessionserviceprovider ?

the problem can calling session_start on middleware using ->after instead of ->before?