Question

Is Jabber like TCP sockets?

Asked by: BrianGilbert

I am looking at Jabber as a transport for a ciritical business application.
At the moment we use TCP sockets to send and receive binary data between multiple clients (concurrently using a queue) and a server. This allows us to be certain that a data stream was received in it's entirety, in it's correct order, and was processed by the server and an acknowledgement sent back.
My question: is Jabber capable of doing the same thing? It appears to just be sending data messages backwards and forwards - does this not mean that you cannot ensure that the data was sent in it's entirety, in the correct order and with the acknowledgement received (and also not clash with other clients data being sent concurrently)?

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Asked On
2008-09-12 at 03:07:11ID23725825
Tags

jabber

,

tcp

,

sockets

,

like

Topics

XMPP

,

TCP/IP

,

Chat / IM Software

Participating Experts
2
Points
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Comments
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Answers

 

by: uetian1707Posted on 2008-09-12 at 12:32:14ID: 22463130

Hi,

Yes Jabber is TCP-Based so you can get all connection-oriented features;

http://protocolinfo.org/wiki/Jabber

 

by: bstrauss3Posted on 2008-09-23 at 06:32:02ID: 22549061

(Jabber == tcp) Not at all.  You are discussing things at different 'levels' of the networking world.

First off, "tcp sockets" is usually used to describe the programming technique (and library) used.  tcp (or more properly tcp/ip) is the protocol.  It handles making the connection between the two computers and the basics of exchanging information.  With retry so that the connection is reliable.

You use sockets progamming to setup the connection and code things such as "send this blob of data".  Listen (receive) a blob of data from the other end.  etc.

If you transfer a block of data (packet) such as 'AABBCDEFGH', what does it mean?  If you do the low-level coding for sockets, well, then, it's totally up to you to interpret it.

Jabber is a protocol layered on top of tcp/ip.  It uses tcp/ip to ensure that the individual packets of data are tranfered reliably.  But jabber adds interpretation of the data (payload is the technical term).

Jabber also provides services such as a directory - so you don't have to know that the IP address at the other side is 192.168.1.101, it's just 'Mike'.

From where I sit, the only benefit that Jabber provides is that it's already supported by and/or figured out how to punch through the firewalls.  And it has a 'file transfer' capability.  So you could certainly piggy back off it.  I'd need to know a lot more about the specifics of the application to say more.

-----Burton

 

by: BrianGilbertPosted on 2008-09-26 at 06:13:15ID: 22579074

What we need is the ability to defintely *know* that all of a message has been sent, in the right order , with the correct acknowledgement or an error message.  I know that Jabber sits on top of TCP/IP, what we need are tcp/ip's ability for an ability to know that all the packets have been sent, but with our applications requirement to ensure that the business logic of send / receive / acknowledge has also been done. That is what I am unsure abotut - as Jabber relies on a server, polling etc., how sure can you be that the messages won't get lost, caught up in other traffic etc.?

 

by: bstrauss3Posted on 2008-09-26 at 06:27:16ID: 22579215

Not that sure.  Most of the IM protocols will detect a network problem and tell you 'correspondent x is offline'.

What you need to implement is the guaranteed delivery of an Enterprise Message Bus (EMS).

TIBCO is the product used by the project I've managed, but that has a fairly high cost.

Your best open/free choice is probably JMS (Java Messaging System), http://java.sun.com/products/jms/, but I can't say I have any hands-on with it.

-----Burton

20120131-EE-VQP-002

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