what difference between MQTT and XMPP?

[Phuc Tran]

hi all,

I'm a new one. I'm working with mobile apps. I don't understand much about MQTT and XMPP.

please tell me know what difference between MQTT and XMPP? when will we use MQTT, XMPP? please share me any interaction model between MQTT and XMPP

thank you for any response.

[Paul Fremantle]

Hi

The protocols are very different. 

Here are a few comparison points:

1) MQTT is a pure pub/sub protocol. XMPP does pub/sub as an optional addon.

2) MQTT is a very compact, low-bandwidth protocol. XMPP is a verbose XML based protocol.

3) XMPP has many extensible features (presence, queues, pub/sub, etc). MQTT expects you to implement those yourself.

4) The only similarity I can really see is that both protocols allow pushing messages out to clients over firewalls!

Paul

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Paul Fremantle

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[ನಾಗೇಶ್ ಸುಬ್ರಹ್ಮಣ್ಯ (Nagesh S)]

Hi,
Just curious ... how are the protocols achieving 'over the firewall' communication ?

Sent from tablet. Pardon brevity, grammar mistakes or typos.

[Phuc Tran]

Hi Paul,

could you please tell me know when we use MQTT and when we XMPP? I'm confusing between them when I create mobile app.

THanks,

Phuc

[Paul Fremantle]

Regarding over the firewall, all I mean is that you can push data to a client when the client is behind a firewall, because the client initiates the conversation. This is true of almost any protocol except for HTTP. This is why WebSockets was invented.

Paul

[Paul Fremantle]

I would use MQTT for any small, low power device or situation where bandwidth is an issue. XMPP is great for rich clients that need many different communications patterns.

Paul

[Phuc Tran]

As my understanding until now, the main difference between MQTT and XMPP is push-notification of MQTT, XMPP can not do this. that why we must use MQTT.

[Paul Fremantle]

Phuc

XMPP does do push notifications: http://xmpp.org/extensions/xep-0357.html

Paul