Re: Sending multiple 100-Continue responses before a 200-OK

Martin Cooper <[email protected]> writes:

> I have a need to be able to send multiple 100-Continue responses before the
> final 200-OK response from a servlet, with a very similar scenario to what Dan
> Rall describes here:
>
> http://mail-archives.apache.org/mod_mbox/tomcat-dev/200311.mbox/%[email protected]%3E
>
> In my case, it would be on Tomcat 5.0.28. Is there any way that this can be
> done? Even a Tomcat-specific way? If not (which is what I suspect), does anyone
> have suggestions as to how I can deal with this type of scenario?

This is very interesting question.


I don't believe it can be done within the constraints of the API.

The servlet API was designed to be call and response - we never
thought about modelling this sort of behaviour (incidentally there's a
lot of HTTP/1.1 that the servlet API doesn't really support).


As to how you _could_ do it... tricky. There's maybe support for this in
some of the better servlet containers (looked at Jetty?
http://jetty.mortbay.org/jetty/) but otherwise you could write your
own HTTP end to just do the data collection.

If it throws 400 or 404 or something for all other requests it
shouldn't be too hard to write.

For a small fee I'll write you one myself.


Nic Ferrier


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