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Network Automation with Go

Network Automation with Go

By : Nicolas Leiva, Michael Kashin
5 (5)
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Network Automation with Go

Network Automation with Go

5 (5)
By: Nicolas Leiva, Michael Kashin

Overview of this book

Go’s built-in first-class concurrency mechanisms make it an ideal choice for long-lived low-bandwidth I/O operations, which are typical requirements of network automation and network operations applications. This book provides a quick overview of Go and hands-on examples within it to help you become proficient with Go for network automation. It’s a practical guide that will teach you how to automate common network operations and build systems using Go. The first part takes you through a general overview, use cases, strengths, and inherent weaknesses of Go to prepare you for a deeper dive into network automation, which is heavily reliant on understanding this programming language. You’ll explore the common network automation areas and challenges, what language features you can use in each of those areas, and the common software tools and packages. To help deepen your understanding, you’ll also work through real-world network automation problems and apply hands-on solutions to them. By the end of this book, you’ll be well-versed with Go and have a solid grasp on network automation.
Table of Contents (18 chapters)
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1
Part 1: The Go Programming Language
6
Part 2: Common Tools and Frameworks
10
Part 3: Interacting with APIs

Application Layer

In the last section, we explored how to establish a TCP or UDP connection between two nodes to transfer bytes over the network using Go low-level network primitives we have learned so far. Now we focus on the top layer of the TCP/IP model and go into the application-level constructs that Go includes on the standard library to implement HTTP clients and servers.

To illustrate this, we go through the steps to build a client-server application that returns MAC address vendor, IP address owner or domain detailed information to the requester. On the client side, we need to craft an HTTP request that encapsulates the query to the server address. On the server side, we need to listen for requests, and implement the logic to serve them and reply with the information for the argument received.

Working with an HTTP Client

On the client side, we first need to put together the URL where we send the request to. The URL, for our example, has three components: * The server address...

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