Preventing cross-site request forgery in Go web applications

It's a common practice to secure web applications from a malicious website, email, blog, instant message, or a program attacking a trusted site for which the user is currently authenticated to prevent unwanted action. We often call this cross-site request forgery.

Implementing cross-site request forgery in Go is fairly easy using the Gorilla CSRF package, which we will be covering in this recipe.

How to do it...

1. Install the github.com/gorilla/csrf and github.com/gorilla/mux packages using the go get command, as follows:

$ go get github.com/gorilla/csrf
$ go get github.com/gorilla/mux

2. Create sign-up.html with name and email input text fields and an action that...