[jdev] XMPP client/server issues with Flash-based client

M. David Peterson xmlhacker at gmail.com
Tue Mar 6 12:26:34 CST 2007


Oh, nice!  Thanks for the info, Peter.

I dug a bit deeper into things, and found several resources, one of which I
believe points out the specific problem that Peter (Fisk) mentioned above,

Near the bottom of http://www.huikuri.com/flash/xml/

*7 E My Server sends out XML but my Flash application never receives it?*
> Your XML server must terminate each XML messages with a null (ASCII 0)
> otherwise your flash application will hold open a connection until the
> session is closed. If you are having problems have a look at some of the
> prebuilt flash servers that are known to be working and test with those,
> before using your own server. Then you can concentrate on problems in your
> flash code or your socket server.


Again, as Peter points out above, binary socket connections are available as
part of Flash 9. I've been playing around with bits and pieces of code, with
some levels of success.  For what it's worth, I've found the following error
catching code found in the ActionScript 3.0 Cookbook quite valuable in this
regard,

if ( socket.connected ) {
    try {
        socket.flush(  );
    }
    catch( error:IOError ) {
        logInstance.write( "socket.flush error\n" + error );
    }
}
else {
    connectToSocketServer(  );
}



On 3/6/07, Peter Saint-Andre <stpeter at jabber.org> wrote:
>
> See also the ActionScript library that Daniel Dura at Adobe created:
>
> http://www.danieldura.com/archive/new-as3-xmpp-library-on-adobe-labs
>
> http://code.google.com/p/as3xmpp/
>
> /psa
>
> Peter Fisk wrote:
> > Thanks for your help.
> >
> > Knowing this, I was able to get the server to respond.
> >
> > Fortunately, it looks as though the Xiff project is ready to ship a Beta
> > release - they seem to use a binary socket connection to avoid the
> problem.
> > http://www.igniterealtime.org/projects/xiff/
> >
> > -- Peter Fisk
> >
> >
> >
> > On 3/5/07, *Peter Saint-Andre* <stpeter at jabber.org
> > <mailto:stpeter at jabber.org>> wrote:
> >
> >     Flash doesn't like XML streams and XMPP is streaming XML. A Google
> >     search for "Flash+Jabber" or "Flash+XMPP" will probably yield some
> >     workarounds...
> >
> >     /psa
> >
> >     M. David Peterson wrote:
> >      > Hey All,
> >      >
> >      > Peter Fisk (Cc'd) has developed direct support for XMPP into
> Vista
> >      > Smalltalk, a .NET and now Flash-based implementation of Smalltalk
> >     and
> >      > Lisp.  It seems he's run into some problems, however, with
> >     getting XMPP
> >      > to work in the Flash-based version (see:
> >      > http://vistascript.net/vistascript/flex/vst.swf
> >     <http://vistascript.net/vistascript/flex/vst.swf> for a working demo
> and
> >      > visit http://vistasmalltalk.wordpress.com/
> >      > <http://vistasmalltalk.wordpress.com/
> >     <http://vistasmalltalk.wordpress.com/>> for a running list of
> entries
> >      > that provide various demo's to help get you started)
> >      >
> >      > In follow-up to a question I posed to Peter in a recent blog
> entry,
> >      >
> >      > @
> >      >
> >
> http://vistasmalltalk.wordpress.com/2007/02/22/wpfe-10-wont-support-clr/#comment-3676
> >      >
> >      >     David,
> >      >     On opening a socket connection to any Jabber server, I can
> >     catch the
> >      >     "connection established" event after which it seems to hang.
> >     There
> >      >     is no problem connecting from Flash to http servers and I can
> >      >     connect to Jabber using Exodus with no problem. I added a
> >      >     "crossdomain.xml" file to the same directory as the *.swf
> file:
> >      >
> >      >     Any thoughts?
> >      >
> >      >
> >      > I personally don't have enough experience with Flash to be able
> >     to know
> >      > the answer (or at least the possible answer) to the problem.  Am
> >     digging
> >      > around a bit to see what I might be able to come up with (I doubt
> >     much I
> >      > need to express to this list how cool it would be to have this
> >      > capability built into a Smalltalk/Lisp interpreter for Flash!
> >     ;-)), but
> >      > it seemed worth posting this to the dev-list to see if anyone
> >     else out
> >      > there might be able to lead and guide me, and ultimately, Peter,
> >     to the
> >      > solution.
> >      >
> >      > Thanks in advance for any and all help/advice!
> >      >
> >      > --
> >      > /M:D
> >      >
> >      > M. David Peterson
> >      > http://mdavid.name | http://www.oreillynet.com/pub/au/2354
> >      > <http://www.oreillynet.com/pub/au/2354
> >     <http://www.oreillynet.com/pub/au/2354>> |
> http://dev.aol.com/blog/3155
> >
>
>


-- 
/M:D

M. David Peterson
http://mdavid.name | http://www.oreillynet.com/pub/au/2354 |
http://dev.aol.com/blog/3155
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