Feeds

Google open sources Wave gravy

Operational transformation

High performance access to file storage

As it strives to replace email, Google has open sourced two chunks of its new-age communications platform, Google Wave.

Unveiled to a standing coder ovation at the Google I/O developer conference in late May, Google Wave is a (still-gestating) web platform that crossbreeds email with IM and document sharing, exhibiting a particular talent for near real-time interaction. Hoping to promote its use across the net, Google intends to open source the platform's underlying protocol and the "lion's share" of its client and server code.

With a post to the official Google Wave Developer blog, the company took its first steps towards fulfilling this promise, opening up the "Operational Transform" (OT) code that underpins the platform as well as a simple client/server prototype that uses the Wave protocol.

Wave's real-time talents spring from Google's OT code. Based on the operational transformation architecture introduced by the Jupiter Collaboration System developed at Xerox PARC, it puts all shared content in the hands of the server. The client can't edit content without first sending an operation to the server - and it can't send an operation unless the server gives the OK. That way, the server needn't keep multiple copies of content for each client.

"The OT code is the heart and soul of the collaborative experience in Google Wave, and we plan that code will evolve into the production-quality reference implementation," Wave engineers Jochen Bekmann and Sam Thorogood wrote in announcing the open sourcing of the code.

Meanwhile, the client/server prototype is meant to encourage experimentation with Wave's underlying communications protocol, based on the open XMPP (Extensible Messaging and Presence Protocol) standard. Dubbed the Google Wave Federation Protocol, it's already published as a draft specification and freely licensed through the Creative Commons alongside the Google Wave APIs.

Both the protocol and the OT code have been updated since Google I/O, with Google saying the OT code has advanced beyond the algorithm implemented by the production servers used by the few thousand Google employees and outside developers currently testing the platform.

In all, Google has opened sourced nearly 40,000 lines of Java code, all under the Apache 2.0. license. ®

High performance access to file storage

More from The Register

next story
Windows 8.1, which you probably haven't upgraded to yet, ALREADY OBSOLETE
Pre-Update versions of new Windows version will no longer support patches
Android engineer: We DIDN'T copy Apple OR follow Samsung's orders
Veep testifies for Samsung during Apple patent trial
OpenSSL Heartbleed: Bloody nose for open-source bleeding hearts
Bloke behind the cockup says not enough people are helping crucial crypto project
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
Half of Twitter's 'active users' are SILENT STALKERS
Nearly 50% have NEVER tweeted a word
Windows XP still has 27 per cent market share on its deathbed
Windows 7 making some gains on XP Death Day
Internet-of-stuff startup dumps NoSQL for ... SQL?
NoSQL taste great at first but lacks proper nutrients, says startup cloud whiz
US taxman blows Win XP deadline, must now spend millions on custom support
Gov't IT likened to 'a Model T with a lot of things on top of it'
Microsoft TIER SMEAR changes app prices whether devs ask or not
Some go up, some go down, Redmond goes silent
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
HP ArcSight ESM solution helps Finansbank
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mobile application security study
Download this report to see the alarming realities regarding the sheer number of applications vulnerable to attack, as well as the most common and easily addressable vulnerability errors.