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Go Web Scraping Quick Start Guide

You're reading from  Go Web Scraping Quick Start Guide

Product type Book
Published in Jan 2019
Publisher Packt
ISBN-13 9781789615708
Pages 132 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Vincent Smith Vincent Smith
Profile icon Vincent Smith
LinkedIn
Vincent Smith has been a software engineer for 10 years, having worked in various fields from health and IT to machine learning, and large-scale web scrapers. He has worked for both large-scale Fortune 500 companies and start-ups alike and has sharpened his skills from the best of both worlds. While obtaining a degree in electrical engineering, he learned the foundations of writing good code through his Java courses. These basics helped spur his career in software development early in his professional career in order to provide support for his team. He fell in love with the process of teaching computers how to behave and set him on the path he still walks today.
See other products by Vincent Smith

Table of Contents (10) Chapters

Preface 1. Introducing Web Scraping and Go 2. The Request/Response Cycle 3. Web Scraping Etiquette 4. Parsing HTML 5. Web Scraping Navigation 6. Protecting Your Web Scraper 7. Scraping with Concurrency 8. Scraping at 100x 9. Other Books You May Enjoy

What is a User-Agent string?

When an HTTP client makes a request to a web server, they identify who they are. This holds true for web scrapers and normal browsers alike. Have you ever wondered why a website knows that you are a Windows or a Mac user? This information is contained inside your User-Agent string. Here is an example User-Agent string for a Firefox browser on a Linux computer:

Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

You can see that this string identifies the family, name, and version of the web browser, as well as the operating system. This string will be sent with every request from this browser inside of a request header, such as the following:

GET /index.html HTTP/1.1
Host: example.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

Not all User-Agent strings contain this much information. HTTP clients...

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Authors (1)

Profile icon Vincent Smith
LinkedIn
Vincent Smith has been a software engineer for 10 years, having worked in various fields from health and IT to machine learning, and large-scale web scrapers. He has worked for both large-scale Fortune 500 companies and start-ups alike and has sharpened his skills from the best of both worlds. While obtaining a degree in electrical engineering, he learned the foundations of writing good code through his Java courses. These basics helped spur his career in software development early in his professional career in order to provide support for his team. He fell in love with the process of teaching computers how to behave and set him on the path he still walks today.
Read more
See other products by Vincent Smith

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