Re: [Resteasy-developers] OPTIONS and CORS

[Bill B. <bb...@re...>]

On 6/2/2013 12:08 AM, Patrick Bakker wrote:
> I'm having a lot of trouble trying to set the appropriate CORS headers
> from a browser OPTIONS request.
> I'm trying to POST a form using the browser FormData and the browser is
> calling server-side with OPTIONS before it does the POST:
>
> I'm calling a URL of the form:
>
> http://host/myapplication/import/list
>
> Where I know RESTEasy is handling all paths underneath myapplication
> since I have other GETmethods that work properly.
> When I send my POSTed FormData from browser the browser requests the URL
> http://host/myapplication/import/list with an HTTP method of OPTIONS and
> I get this exception server-side:
>
> Failed executing OPTIONS /import/list:
> org.jboss.resteasy.spi.DefaultOptionsMethodException: No resource method
> found for options, return OK with Allow header
>

This isn't a failure.  This exception implements the default OPTIONS 
behavior if there is no method supporting @OPTIONS

> --- ---
>
> Here are the questions I'm trying to answer followed by a detailed
> breakdown of what I'm currently trying:
>
> 1. Is there a recommended way to handle CORS request that is a
> "standard" part of REST Easy?

We have nothing.  If you have suggestions, please detail it in a JIRA so 
we can implement it.  Or contribute it if you have time.

> 2. Why doesn't my PostProcessInterceptor work for OPTIONS methods?

I assume you are on 2.3.x?  This is because PostProcessorInterceptor 
does not get called when there is an exception.  Write an 
ExceptionMapper for DefaultOptionsMethodException.

> 3. Is it possible to make a single handler for any OPTIONS method for
> any path? (I thought my @Path mapping below might do it ...)

Write an ExceptionMapper for DefaultOptionsMethodException.

> 4. Not that it is a great solution to my CORS issue, but why doesn't my
> ExceptionMapper get called?
>

Don't know.  The ExceptionMapper should work.  If this is a Resteasy 3.x 
problem, then report a JIRA and we can get to it in the next couple of 
days/weeks.  For 2.3.x problems, sorry, but we're 100% focused on 
getting Resteasy 3.0 out for the next few months and we're only fixing 
customer problems for 2.3.x.


-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com