Custom Status Line Not Working in RESTLET - restlet

Question

I am writing a REST application and i am using RESTLET. My service has a PUT method. As part of the response, i would like to return to the user Custom Status.
For Example :
200 - Successfully Created and Data processing in progress.
I tried to set the statuses as below.
#Put
public String storeItem(Representation entity) throws Exception {
// Some Processing
Status st = new Status(420,null,"REASON_PHRASE","Some description",null);
setStatus(st);
return "Some String Representation"
}
When i try to access the URL using CURL, i get the following status line.
curl -v -X PUT "http://localhost:8080/extensible/data/process"
* About to connect() to localhost port 8080 (#0)
* Trying ::1... connected
* Connected to localhost (::1) port 8080 (#0)
> PUT /extensible/data/upload HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: localhost:8080
> Accept: */*
>
< HTTP/1.1 420 420
< Content-Type: application/json; charset=UTF-8
< Date: Wed, 22 Jan 2014 06:56:24 GMT
< Accept-Ranges: bytes
< Server: Restlet-Framework/2.0.1
< Vary: Accept-Charset, Accept-Encoding, Accept-Language, Accept
< Content-Length: 21
<
* Connection #0 to host localhost left intact
* Closing connection #0
The status line above is HTTP/1.1 420 420 but i expect a status line of HTTP/1.1 420 REASON_PHRASE
What am i doing wrong?
Any help will be greatly appreciated.

Answer 1

My two cents about the design.
1. I think you need a pretty good reason to use a custom http status.
I don't think this is the case.
REST API consumed by applications and the application that consume the API know that this particular PUT is part of an asynchronous process.
There for a simple 200 with the new id as data or link to the edit url should be enough.
The client application should notify the user, if decided to do so.
If you still think a custom status is the right way you should consider using 20* and not 420.