Google’s GCM Cloud Connection Server

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250+ team with experience in
managing offshore,
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Neev Technologies
established in Jan ’05
VC Funding in 2009 By Basil
Partners
User Interface Design and User Experience Design
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Performance Consulting Practices
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Outsourced Product Development
Development Centers in
Bangalore and Pune.
Offices at Bangalore, USA,
Delhi, Pune, Singapore and
Stockholm.

Google’s Cloud Connection Server : A Brief Intro
• Connection Server based on XMPP(Extensible Messaging and Presence
Protocol)
• Allows third party app servers to communicate with Android devices
• Uses a persistent TCP connection for communication
• Communication is asynchronous and bi-directional
• This XMPP mechanism for sending messages can be used alongside
traditional HTTP

More Info on XMPP
• Founded and used by Jabber for instant messaging
• Is an XML based communication protocol
• XMPP is open source, which means any developer can customize its
extensions to suit software requirements.
• IM Services such as Google Talk and the chat feature in Facebook use XMPP
in the back-end though not a native implementation
• Initially, Transmission Control Protocol (TCP) which is native to XMPP was
used for communications. Later, XMPP was developed to perform data
transfers via HTTP for web clients and via web-sockets for real-time
messaging.
• The native design of the XMPP server component has an in-built entity called
‘transports’ or ‘gateways’ that aids the communication of messages between
XMPP and non-XMPP systems.

How XMPP uses HTTP for communication
XMPP uses HTTP in two ways :
1. Polling
•
Where data transfer is done through HTTP POST and GET methodologies
•
Is now deprecated
2. Binding
•
used for data PUSH methodologies
•
Implemented over Bidirectional-streams Over Synchronous HTTP (BOSH)
•
This push model of notification is more efficient than polling, where many of the
polls return no new data

How CCS has improved on GCM
• CCS uses the XMPP protocol over a long-lasting TCP connection for communications
• Now, CCS performs both device-to-cloud and cloud-to-device communications (through
XMPP) over the same connection (TCP) and thereby helps developers achieve a better
device power management in their apps than GCM
• CCS requires a Transport Layer Security (TLS) connection and Simple Authentication and
Security Layer (SASL)-based authentication.
• CCS incorporates JSON-based payload messages into the XMPP-supported XML structure
and uses it for communications. CCS could send up to 1000 such messages
asynchronously before it receives any acknowledgement from the device.
7/8/13

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Partnerships

Neev Information Technologies Pvt. Ltd.
India - Bangalore
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For more info on our offerings, visit www.neevtech.com