passing data between ChannelHandlers

[Matt DeLuco]

Before composing this message I had noticed
ChannelHandlerContext.setAttachment(Object) and getAttachment().  But
for some reason I came to the conclusion that it wasn't intended for
what I want to do.

I came to that conclusion in part because I found it strange that it's
only possible to set one attachment, rather than being able to attach
a set (or map) of objects.  Could I just attach a map to the context
and store whatever I want in that map, to pass objects between
ChannelHandlers?

MD


On Sat, Oct 15, 2011 at 9:42 PM, Matt DeLuco <list_usr at spacebox.net> wrote:
> Is it possible to pass data between ChannelHandlers, or store data
> somewhere that the handlers in a specific pipeline/channel can access
> throughout the lifetime of the request?
>
> For example, I have my own class for dealing with http cookies,
> "CookieMap".  I'd like to have a SimpleChannelHandler that creates a
> CookieMap to be used by handlers further upstream, and then sets the
> cookies in the CookieMap on the response on their way back downstream.
>
> MD
>