Mastering Go - Second Edition

An HTTPS client

Nowadays, most web sites work using HTTPS instead of HTTP. Therefore, in this subsection, you will learn how to create an HTTPS client. The name of the program will be httpsClient.go and it is going to be presented in three parts.

Depending on the deployment architecture, Go programs might just speak HTTP and some other service (such as the Nginx web server or a cloud-supplied service) might provide the Secure Sockets Layer (SSL) part.

The first part of httpsClient.go contains the following code:

package main 
 
import ( 
    "crypto/tls" 
    "fmt" 
    "io/ioutil" 
    "net/http" 
    "os" 
    "path/filepath" 
    "strings" 
) 

The most important package is crypto/tls, which, according to its documentation, partially implements Transport Layer Security (TLS ...