> I'd like to implement the server side of Google Closure's
> BrowserChannel. For this however I need to be able to answer to a GET
> request with two chunks of data, which are being sent 2 seconds apart.
> Basically something like the following:
> - User U sends GET request to Server S
> - S receives GET request from U, accepts it and writes "11111" back to
> U *without closing the connection*
>  - S waits 2 seconds
>  - S writes "2" back to U
>  - S closes the GET connection
> - U receives the data

> Anyone has a idea how I could achieve this with compojure?

> On 30 July 2011 17:19, MHOOO <thomas.karol...@googlemail.com> wrote:

> > I'd like to implement the server side of Google Closure's
> > BrowserChannel. For this however I need to be able to answer to a GET
> > request with two chunks of data, which are being sent 2 seconds apart.
> > Basically something like the following:
> > - User U sends GET request to Server S
> > - S receives GET request from U, accepts it and writes "11111" back to
> > U *without closing the connection*
> >  - S waits 2 seconds
> >  - S writes "2" back to U
> >  - S closes the GET connection
> > - U receives the data

> > Anyone has a idea how I could achieve this with compojure?

> You could use a lazy seq, e.g.

>   (lazy-seq
>     (cons "11111"
>           (do (Thread/sleep 2000)
>               (list "2"))))

> - James

> For some reason that does not work: Is the lazy-seq possibly being
> realized before sent (element by element) to the client?

> On 31 July 2011 02:10, MHOOO <thomas.karol...@googlemail.com> wrote:

> > For some reason that does not work: Is the lazy-seq possibly being
> > realized before sent (element by element) to the client?

> It looks like you need to wrap the ending seq in a lazy-seq too. This
> worked for me:

>   (GET "/" []
>     (lazy-seq
>      (cons
>       "11111"
>       (lazy-seq
>        (do (Thread/sleep 2000)
>            (list "2"))))))

> - James