The document outlines a project focused on smartphone-sensor interaction using the Constrained Application Protocol (CoAP) within the Internet of Things (IoT). It discusses key tools such as Calilfornium for implementing CoAP in Java, and the project's aim to develop an Android application for controlling a microcontroller. Future work includes client-server implementation on Eclipse and running tests on a simulator.

1. CoAP-based Application for
Smartphone-sensor Interaction
CS300 Project
Project Instructor – Dr. Rakesh Matam
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Presented by
Md Syed Ahamad

2. Project Role
• Theory Analysis
• Implementation
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3. Outline
• Introduction
• Internet of Things
• Protocol - CoAP
• CoAP live
• Californium
• Californium tools used in this project
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4. Tools for the project
• Prerequisites
• Java
• Californium – CoAP protocol implementation in java
• Maven Project
• Eclipse IDE
• Firefox + Copper
• Contiki – OS
• A microcontroller
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5. Internet of Things
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[Source: https://www.linkedin.com/topic/internet-of-things]

6. Constraint Application Protocol (CoAP)
• Specialised web transfer protocol in the Internet of Things
• Varies from HTTP
• UDP rather than TCP
• Machine-to-Machine
• REST model
• Security – DTLS (TLS/SSL for Datagrams)
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7. 7[Source: http://goo.gl/LLQ03w]

8. 8[Source: http://goo.gl/LLQ03w]

9. 9[Source: http://goo.gl/LLQ03w]

10. CoAP live with Copper
• CoAP protocol handler for Mozilla Firefox
• CoAP URI
• Observation –Interaction with resource, GET, POST, PUT, DELETE etc.
• Test Server - coap://coap.me:5683/
- coap://iot.eclipse.org:5683/
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11. 11

12. Californium (Cf) CoAP Framework
• Open source implementation CoAP in Java
• Targets unconstraint environment
• Scalable architecture
• Focus on usability
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13. 13
[Source: Californium by Daniel Pauli and Dominique Im Obersteg]

14. 14
[Source: Californium by Daniel Pauli and Dominique Im Obersteg]
Send operation
Receive operation

15. Cf tools related to project
• Libraries
• Californium – core
• Californium - OSGi
• Californium – cross proxy
• Server API - Important classes (org.eclipse.californium.core)
• CoapServer
• CoapResource
• CoapExchange
15[Source: https://github.com/eclipse/californium]

16. Cf tools related to project
• Client API - Important classes (org.eclipse.californium.core)
• CoapClient
• CoapHandler
• CoapResponse
• CoapObserveRelation
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17. Further work
• Implementation of CoAP
• Client-server on eclipse
• Test run on a simulator
• Development of CoAP based Android App for controlling a
microcontroller.
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18. Reference
• http://iot.eclipse.org
• http://goo.gl/LLQ03w - “Hands on with CoAP”
• http://coap.technology/
• http://www.rfc-base.org/txt/rfc-7252.txt - RFC 7252 documentation released by
IETF, June 2014.
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