BonAHA is a framework that aims to simplify building ad-hoc applications for mobile and mesh networks by handling service discovery and maintaining state of nodes and metadata, without requiring applications to resolve services or maintain their own state. It provides object-oriented APIs and events to register services, browse for other nodes and services, and get updated when the network changes. This allows building ad-hoc applications with much less code than using the lower-level Bonjour APIs directly. Examples demonstrate how it can reduce the code needed for a location sharing application from 148 lines to just 8 lines.

1. BonAHA: A Framework for Ad-Hoc Applications Suman Srinivasan, Henning Schulzrinne Internet Real Time Lab

10. BonAHA – OO Network Events Node 1 Node 2 key1 = value1 key2 = value2 key3 = value3 key4 = value4 Key2_1 = Value2_1 Key2_2 = Value2_2 Key2_3 = Value2_3 Key2_4 = Value2_4 [2] node1.get(key3) [1] node1.register() [3] data = node1.fileGet( “ filename.doc”);

11. TXTRecord DNSRegistration RegisterListener serviceRegistered() DNSSDService BrowseListener serviceFound() serviceLost() DNSSDService ResolveListener serviceResolved() DNSSD.resolve() DNSSD.register() TXTRecord Host IP DNSSD.browse() set() Bonjour State Diagram

12. BService BListener serviceUpdated() set() register() setListener() serviceExited() BNode get() getHostName() getHostAddress() BonAHA State Diagram

14. Code: LocationFinder

15. Compare: Bonjour Code

16. Comparison in numbers ~60 ~8 Only ad-hoc application functionality 148 79 Complete class Bonjour Code BonAHA Code LocationFinder Lines of Code

21. Related Work - LightPeers http://www.daimi.au.dk/~bentor/LightPeers/

25. Backup Slides

32. TXTRecord DNSRegistration RegisterListener serviceRegistered() DNSSDService BrowseListener serviceFound() serviceLost() DNSSDService ResolveListener serviceResolved() DNSSD.resolve() DNSSD.register() TXTRecord Host IP DNSSD.browse() set() Bonjour State Diagram

33. BService BListener serviceUpdated() set() register() setListener() serviceExited() BNode get() getHostName() getHostAddress() BonAHA State Diagram