Re: [XHR] request error distinction: abort and error

On Sat, Aug 17, 2013 at 2:40 AM, Hallvord Steen <hsteen@mozilla.com> wrote:

>
> > -> If the request cancellation is trigger by the end user
> >    This is an abort error.
> > Note: The request cancellations by the end user include clicking
> > on a stop button in browser chrome, hitting escape, page navigation, etc.
> >
> > WDYT?
>
> I think the real reason for the disagreement is that the feature lacks a
> real, solid use case - except, perhaps, if a script wanted to do alert('Hi,
> please stop clicking the "Stop" button while we\'re processing your order')
> or something. There simply isn't much a script can sensibly do in response
> to a user interruption (certainly when one isn't quite sure if it is the
> user interrupting or not..)
>
>  However, what one might want to do is to re-schedule some request and try
> again later. In this respect, I think a user cancellation is much closer to
> a network error than an abort() call. If the network fails, you can assume
> it's somewhat erratic and it makes sense to try in a minute. If the user
> clicks stop, I guess you can also assume that the user is somewhat erratic
> and it makes sense to try again later ;-)


In my understanding, here comes the difference. It seems network errors can
be considered erratic and it somehow makes sense to retry, but abort() call
and the user cancellations I referred to cannot simply be assured as
erratic situations. Users can explicitly abort the normal ongoing request
on purpose and in this case retry may not make sense. E.g. upon the request
abort made by clicking on browser stop button, the user rather expects to
explicitly reload or load the page again.



> (99% of users won't really understand that they interrupted something, or
> what they interrupted, especially since I believe browsers do not tend to
> have "stop" UI for XHR traffic).
>
> By that logic I think having it classified as an 'error' event is better,
> but IMO this is a minor detail and not really worth our time..
> -Hallvord
>



-- 

Jungkee Song