[REBOL] Re: The REBOL async:// tutorial - take 1
From: Christophe:Coussement:mil:be at: 11-Mar-2004 13:33
Hi Maarten and Will
Sorry for this late answer: I was out of office for a while...
Thanks for helping me !
> >I tried the following, but without any result. I try to load
> a %logo.jpg file situated in the same dir as %async-protocol,
> and try to connect to localhost. What did I wrong?
> >
> What are you trying to do? Fetch the file from a file or a webserver?
Fetch from the file.
I just wanted to try the code running on localhost.
> >;>>>>>>>>>>>>>>>>>>> code ---
> >do %async-protocol.r
> >
> >handler: func [
> > { your comment here
> > RETURN: }
> > port [port!] "comment"
> > state [word! error!]
> > /local tmp cmd
> >][
> > ;$debug/var/stop 'state
> > if error? :state [print mold disarm state return true]
> > switch state [
> > connect [
> > insert port {GET logo.jpg
> HTTP/1.0^M^JHost:127.0.0.1^M^J^M^J}
> > false
> > ]
> > read [false]
> > write [false]
> > close [
> > data: copy port
> > close port
> > ;$debug/var/stop 'data
> > data: to binary! find/tail data "^M^J^M^J"
> >
> >
> Do you receive data? What does your webserver log say?
Well, do I have to work on a webserver?
I thought %async-protocol.r serviced a sort of server, listening on specified port ?
> > other/image: attempt [load data]
> > other/text: ""
> > show other
> > false
> > ]
> > ]
> >]
> >
> >port: open async://127.0.0.1:80
> >port/awake: :handler
> >
> >view layout [
> > across me: box 100x100 random 255.255.255 0:00:0.5 feel [
> > engage: func [f a e][
> > if a = 'time [
> > me/color: random 255.255.255
> > show me
> > ]
> > ]
> > ]
> > other: box 100x100 255.255.255 "Downloading image ..." return
> > area 208x100 "you can type here while downloading"
> >]
> >;--- code <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> >
> >
>
> It looks like you are re-using the exact code I mailed, which (I just
> checked) works. So it looks like you'll have to debug using your
> webserver and debugger in the script to see what gets done and what
> doesn't. Sorry I can't help any more, but the code looks fine
> (an exact
> copy of the sample code except for the URI).
>
anyway, wet i get is the generated window, but with no image loading.
After placing a debug mark at the beginning of 'handler, I can see the function isn't
evaluated once.
I think I'm confused about the context of the use of this protocol :(
Could you provide me with a concrete use case ?
TIA
==christophe
