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Go Systems Programming

You're reading from   Go Systems Programming Master Linux and Unix system level programming with Go

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Product type Paperback
Published in Sep 2017
Publisher Packt
ISBN-13 9781787125643
Length 466 pages
Edition 1st 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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Table of Contents (13) Chapters Close

Preface 1. Getting Started with Go and Unix Systems Programming FREE CHAPTER 2. Writing Programs in Go 3. Advanced Go Features 4. Go Packages, Algorithms, and Data Structures 5. Files and Directories 6. File Input and Output 7. Working with System Files 8. Processes and Signals 9. Goroutines - Basic Features 10. Goroutines - Advanced Features 11. Writing Web Applications in Go 12. Network Programming

A small web server

Enough with the web clients: in this section, you will learn how to develop web servers in Go!

The Go code for the implementation of a naive web server can be found in webServer.go, and this will be presented in four parts; the first part is the following:

package main 
 
import ( 
   "fmt" 
   "net/http" 
   "os" 
) 

The second part is where things start to get tricky and strange:

func myHandler(w http.ResponseWriter, r *http.Request) { 
   fmt.Fprintf(w, "Serving: %s\n", r.URL.Path) 
   fmt.Printf("Served: %s\n", r.Host) 
} 

This is a kind of function that handles HTTP requests: the function takes two arguments, a http.ResponseWriter variable and a pointer to an http.Request variable. The first argument will be used for constructing the HTTP response, whereas the http.Request variable holds the details of the...

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