Hi,
OK so it seems that you can use Sockets perfectly well on the Symbian 6.1
Nokia's. It may not be supported and you may have to use 2 sockets (one read
and one write) but it sounds like it will work fine.
I know it can be difficult to set up the APNs but if you just set the WAP
gateway to 0.0.0.0 it all works fine. This avoids the WAP gateway and its
associated problems. Remember WAP gateways are legacy and will not be around
forever :-)))
I think you will find that MIDlets will nearly all network in the future.
After all CLDC does stand for CONNECTED limited device configuration and we
are talking about MOBILE phones. Seems crazy not to.
As for the Java/Symbian probem, does anyone know for a fact that this is not
a Symbian 6.1 problem? The Symbian 7.0 phones I have seen seem to work OK.
As for the PING times the 1 second RTT seemed quite high. I have heard that
you can get 400ms RTT on certain GPRS networks. May be true or not true, I
am not sure. Does anyone know? Is there a PING time website or something?
Thanks,
Peter
issue). Thats not good at all.
The Nokia 7650 and 3650 are both Symbian 6.1. We have now moved onto
Symbian
7.0 phones of which the Nokia 6600 is one. Do we think this is a Symbian
6.1
issue though or a Nokia Java issue?
I would be very interested in any more information on Socket
implementations
for J2ME, especially those on Nokia handsets.
Finally what kind of PING times are you guys getting on your GPRS networks?
I hear Voda's is quite fast.
Peter
From: Claus Klammer <klammer@xxxxxxxxx>
Reply-To: A mailing list for KVM discussion <KVM-INTEREST@xxxxxxxxxxxx>
To: KVM-INTEREST@xxxxxxxxxxxx
Subject: Re: success: sockets on nokia 3650 (symbian)
Date: Tue, 23 Sep 2003 07:18:31 +0200
We've got the same problem on the 7650. But we managed to support
asynchronous behaviour by simply use two connections (one for reading the
other for writing) ;-)! (But note: TCP-Socket-Connections are not
supported
by Nokia!)
I did a lot of research in networking capabilities of mobile phones
(especially Nokia phones). Maybe I can give you some tips also I don't
know
the new MIDP2.0 phones.
Claus
----- Original Message -----
From: "Michael Powers" <michael@xxxxxxxxxxx>
To: <KVM-INTEREST@xxxxxxxxxxxx>
Sent: Monday, September 22, 2003 5:23 PM
Subject: success: sockets on nokia 3650 (symbian)
> Hi all,
>
> Having just got a Nokia 3650, I was puzzled that while the connector
> return a connection object for a "socket" url, even though it didn't
> seem to work. If it wasn't implemented, why didn't it just throw an
> exception?
>
> I didn't find anything about this in my research, so maybe this will
> come as news to you:
>
> Turns out that it's a *half-duplex* socket. Reading or writing blocks
> both until the operation completes. If you have an asynchronous
> application, you're still out of luck, but if you can get by with a
> synchronous protocol, you can get your app to work. (Also be sure to
> flush properly on both ends, or you'll get hung. Pardon my colorful
> language.)
>
> I'm not currently sure if this impacts all Symbian-based environments
> (like the Sony-E P800), but suspect they all share the same KVM
> implementation. Perhaps someone can verify this. Also unclear is
> whether this affects the Nokia MIDP 2.0 device, which is Symbian based.
>
> - Michael
>
>
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