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Mastering Go – Third Edition

You're reading from   Mastering Go – Third Edition Harness the power of Go to build professional utilities and concurrent servers and services

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Product type Paperback
Published in Aug 2021
Publisher Packt
ISBN-13 9781801079310
Length 682 pages
Edition 3rd Edition
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Author (1):
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Mihalis Tsoukalos Mihalis Tsoukalos
Author Profile Icon Mihalis Tsoukalos
Mihalis Tsoukalos
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Toc

Table of Contents (17) Chapters Close

Preface 1. A Quick Introduction to Go 2. Basic Go Data Types FREE CHAPTER 3. Composite Data Types 4. Reflection and Interfaces 5. Go Packages and Functions 6. Telling a UNIX System What to Do 7. Go Concurrency 8. Building Web Services 9. Working with TCP/IP and WebSocket 10. Working with REST APIs 11. Code Testing and Profiling 12. Working with gRPC 13. Go Generics 14. Other Books You May Enjoy
15. Index
Appendix A – Go Garbage Collector

Creating a WebSocket client

This subsection shows how to program a WebSocket client in Go. The client reads user data that sends it to the server and reads the server response. The client directory of https://github.com/mactsouk/ws contains the implementation of the WebSocket client—I find it more convenient to include both implementations in the same repository.

As with the WebSocket server, the gorilla/websocket package is going to help us develop the WebSocket client.

We are going to see gorilla in the next chapter when working with RESTful services.

The code of ./client/client.go is as follows:

package main
import (
    "bufio"
    "fmt"
    "log"
    "net/url"
    "os"
    "os/signal"
    "syscall"
    "time"
    "github.com/gorilla/websocket"
)
var SERVER = ""
var PATH = ""
var TIMESWAIT = 0
var TIMESWAITMAX = 5
var in = bufio.NewReader...
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