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Internet of Things with Python

You're reading from   Internet of Things with Python Create exciting IoT solutions

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Product type Paperback
Published in May 2016
Publisher Packt
ISBN-13 9781785881381
Length 388 pages
Edition 1st Edition
Languages
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Author (1):
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Gaston C. Hillar Gaston C. Hillar
Author Profile Icon Gaston C. Hillar
Gaston C. Hillar
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Table of Contents (13) Chapters Close

Preface 1. Understanding and Setting up the Base IoT Hardware FREE CHAPTER 2. Working with Python on Intel Galileo Gen 2 3. Interacting with Digital Outputs with Python 4. Working with a RESTful API and Pulse Width Modulation 5. Working with Digital Inputs, Polling and Interrupts 6. Working with Analog Inputs and Local Storage 7. Retrieving Data from the Real World with Sensors 8. Displaying Information and Performing Actions 9. Working with the Cloud 10. Analyzing Huge Amounts of Data with Cloud-based IoT Analytics A. Exercise Answers Index

Composing and sending HTTP requests

The HTTP server is running in Yocto Linux and waiting for our HTTP requests to control the LEDs on connected to the Intel Galileo Gen 2 board. Now, we will compose and send HTTP requests locally in Yocto Linux and then from other computer or devices connected to our LAN.

HTTPie supports curl-like shorthands for localhost. For example, :8888 is a shorthand that expands to http://localhost:8888. We already have an SSH terminal running the HTTP server, and therefore, we can run the following command in another SSH terminal.

http GET :8888/version

The previous command will compose and send the following HTTP request: GET http://localhost:8888/version. The request is the simplest case in our RESTful API because it will match and run the VersionHandler.get method that just receives self as a parameter because the URL pattern doesn't include any parameters. The method creates a response dictionary and then calls the self.write method with response as a parameter...

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