oauth - How do you renew an expired Facebook access token? -



oauth - How do you renew an expired Facebook access token? -

i working this reference, , trying implement oauth protocol allow users log site via facebook. however, facebook's documentation pretty terrible , unclear in few key parts.

it says authorization takes 3 steps:

user authentication (redirect user https://facebook.com/dialog/oauth?client_id=...&redirect_uri=..., , expect redirect_uri page called code). works great!

app authorization (handled facebook, etc). works great!

app authentication (on callback page, grab code , phone call https://graph.facebook.com/oauth/access_token?client_id=...&redirect_uri=...&client_secret=...&code=.... body of response include access_token need stuff)

i understand access_token, can phone call apis , such. but, happens when expires? new one, point many http requests later, , no longer have code used in first place. have store code along side access_token? or, have tell user log in 1 time again new code new access_token?

or, missing key part here? don't need offline_access token, polling info in response user actions .

when access_token expires, user seen "logged out" facebook. app go through same process first time, user may not.

if user hasn't revoked access app, , user logged facebook @ time, app authorization process take care of itself, no actions required user, , receive new access_token.

if user hasn't revoked access app, isn't logged facebook, presented facebook login @ app authorization step. won't asked give app permission again, facebook knows app id authorized user.

finally, if user has revoked access, presented original request app authorization, , you'll follow original flow.

essentially, should consider access_token volatile, , not bother storing it, using access_token receive part of user login process, happening behind scenes time, , involving user when log out of facebook or revoke access application.

this different twitter's oauth can store , re-use it.

facebook oauth

Comments

Post a Comment

Popular posts from this blog

iphone - Dismissing a UIAlertView -

iphone - Dismissing a UIAlertView - i set in app purchase app, , when user taps button, purchase started. basically, tap button, , depending on speed on net connection, waiting 10 seconds until new alert view comes asking if purchase product. user tap button multiple times since nil came up, , multiple purchase alert views come up. additionally, maybe seen user app bug. in end, problem. i want alert view come spinning wheel says "loading..." when users taps purchase button. problem is, how dismiss when new alert view comes asking user if want purchase product? if ([uialertview alloc] says: @"whatever apple's alert view says") { //dismiss "loading..." alert view here } i uncertainty work, input appreciated. thanks! you need have access alertview. can this. create alertview instance var in app delegate , when want show loading initialize instance var assign property , when want dismiss phone call [alertviewinstance d...
Read more

c# - Can ProtoBuf-Net deserialize to a flat class? -

c# - Can ProtoBuf-Net deserialize to a flat class? - protobuf-net uses nested protobuf constructs back upwards inheritance. however, can made force properties flat target class has same properties inherited "serialized" version? see test illustration below. needless result of flat namespace null both properties. possible solution: re-create info flat.b first on property property basis. note: not prefered option. using system; namespace hierarchy { using protobuf; [protocontract] public class { [protomember(1)] public string prop1 { get; set; } } [protocontract] public class b : { public b() { } [protomember(1)] public string prop2 { get; set; } public override string tostring() { homecoming "prop1=" + prop1 + ", prop2=" + prop2; } } } namespace flat { using protobuf; [protocontract] p...
Read more

javascript - Change element in each JQuery tab to dynamically generated colors -

javascript - Change element in each JQuery tab to dynamically generated colors - i'm using jquery ui tabs widget , have button add together additional tabs. i'm tying each tab markers on map coordinating randomly generated color using function gen_color() { homecoming '#'+(math.random()*0xffffff<<0).tostring(16); } so each tab has color corresponds number of markers of same color on map. i'm trying add together 15x15 block of color within tab's tab left of it's label. right i'm using tabtemplate alternative , trying alter when new tab added: $tabs = $("#tabs").tabs({ tabtemplate: "<li><span class='ui-icon-color' style='background-color:#000000;'></span><a href='#{href}'>#{label}</a> <span class='ui-icon ui-icon-close'>remove tab</span></li>", selected: 0, add: funct...
Read more