1. Applications written using BonAHA
BonAHA: a Service Discovery Framework for Opportunistic Networks
Suman Srinivasan, Henning Schulzrinne, Internet Real Time Lab, Computer Science Department, Columbia University
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Applications written using BonAHA
Opportunistic Networks
Mobile nodes; highly mobile networks
No infrastructure
OLPC; mesh networks
“Ad-hoc applications”/ “Mobile P2P applications”
Applications need to
Be aware of network transitions
State/metadata of nodes in the network
BBS application
Runs on iPod/iPhone
Allows users to upload “posts”
Other users can pick up “posts” and share their own
Information on events, etc that they are interested in sharing
BonAHA framework
key11 = value11 key12 = value12 key13 = value13 key14 = value14
[1] node1.register()
Group Chat
Really localized applications
Work in “cloud” or “opportunistic” networks
Examples
File synchronization
Bulletin Board system
We have a framework for this: BonAHA
And applications built using it
Allows users to discover peers in local network and chat
Rooms can be set up for private chats
Node 1
[2] node1.get(key13)
key21 = value21 key22 = value22 key23 = value23 key24 = value24
[3] data =
node1.fileGet(
value13);
BonAHA
[CCNC 2009]
Node 2
File Sharing
Users can share files with each other by dragging and dropping files onto peers’ computers
Handles peers entering and leaving network
Related Work
BonAHA API
Proem (2001)
Peer2Me (2004)
System on a Device (SyD) (2004)
LightPeers (2007)
Market Content Protocol (MCP) (2008)
For registration
service = new BService(“loc", "tcp");
service.set("Latitude", lat);
service.register();
service.setListener(this);
For network transitions
nodeUpdated()
nodeExited()
Future work: common ground?
Application
Several network models
Opportunistic network frameworks
DHTs
Overlay networks
Disruption tolerant networks
Is a common framework possible for all models?
Network Framework –get(), set(), put(), rm(), onUpdate()
ZigBee
BlueTooth
mDNS/
DNS-SD
DHTs?
Gnutella?
This work was supported by the National Science Foundation (NSF) under Grant
The authors would also like to thank the following people for their help:
- Ming Ge (file sharing application), Heming Cui (group chat application), Kiwoon Sung (BBS application)