Server in Go

Create New Go Module for the project

go mod init

Write main.go

Build

go build -o out

Run

./out

Build & Run

go build -o out && ./out

Fileserver

A fileserver is a kind of simple web server that serves static files from the host machine. File servers are often used to serve static assets for a website, like:

• HTML
• CSS
• JavaScript
• Images

1. Create file 'index.html'
2. Add line in 'main.go': mux.Handle("/", http.FileServer(http.Dir(".")))

Custom Handlers

An http.Handler is any type that implements the ServeHTTP method:

type Handler interface {
    ServeHTTP(ResponseWriter, *Request)
}

The http.ServeMux is an http.Handler You use a Handler for more complex use cases, such as:

• Implement custom router
• Middleware
• any other custom logic

You will tipically use a HandlerFunc when you want to implement a simple handler.