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Go Programming Cookbook

You're reading from   Go Programming Cookbook Over 85 recipes to build modular, readable, and testable Golang applications across various domains

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789800982
Length 434 pages
Edition 2nd Edition
Languages
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Author (1):
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Aaron Torres Aaron Torres
Author Profile Icon Aaron Torres
Aaron Torres
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Toc

Table of Contents (16) Chapters Close

Preface 1. I/O and Filesystems FREE CHAPTER 2. Command-Line Tools 3. Data Conversion and Composition 4. Error Handling in Go 5. Network Programming 6. All about Databases and Storage 7. Web Clients and APIs 8. Microservices for Applications in Go 9. Testing Go Code 10. Parallelism and Concurrency 11. Distributed Systems 12. Reactive Programming and Data Streams 13. Serverless Programming 14. Performance Improvements, Tips, and Tricks 15. Other Books You May Enjoy

Writing a UDP server and client

The UDP protocol is often used for games and in places where speed is more important than reliability. UDP servers and clients do not need to connect with one another. This recipe will create a UDP server that will listen for messages from clients, add their IPs to its list, and broadcast messages to each of the previously seen clients.

The server will write a message to STDOUT whenever a client connects and it will broadcast the same message to all of its clients. The text of this message should be Sent <count>, where <count> will increment each time the server broadcasts to all of its clients. As a result, count may have different values depending on how long it takes you to connect to your client as the server will broadcast regardless of the number of clients it sends a message to.

How to do it...

These steps cover the process of writing and running your application:

  1. From your Terminal or...
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