[jdev] Communicate between two client instances of the same ID

[Pedro Melo]

Hi,

On Sep 2, 2008, at 5:12 PM, JLIST wrote:

> Thanks Pedro! Although <message /> doesn't get a reply,
> I suppose its delivery is still guaranteed by the transport?

No, unless you use http://www.xmpp.org/extensions/xep-0079.html and  
AFAIK no server supports that. So if you need reliability, I would use  
IQ for now.

> I'm thinking, <message /> sounds more efficient than <ip />

<iq />, not <ip />.

<ip /> gives me scary thoughts :)

> when relatively large amount of data needs to be transferred
> because it doesn't require an XMPP level response.

it wont be a huge overhead because the IQ response is tiny.

And IQ is 2 chars, MESSAGE is 7 :)

Best regards,

>
>
>>> A follow up question is, what would be the right element
>>> of the protocol to use to send and receive custom data?
>>> It'll be very helpful to me if someone can point me to
>>> a link or some names that I can search for.
>
>> You can use two:
>
>> <message /> or <iq />.
>
>> the main difference is that <iq /> is a request/response dialog: you
>> sen a <iq type="set"> or a <iq type="get"> and get back a <iq
> type="result">> or a <iq type="error">. The id attribute of the
>> response matches the id of the request.
>
>> The <message /> is more of a send and forget about it style of
>> communication.
>
>
>

-- 
Pedro Melo
Blog: http://www.simplicidade.org/notes/
XMPP ID: melo at simplicidade.org
Use XMPP!