Table of Contents

Overview

net/url package of golang contains a Parse function that can be used to parse a given and return the URL instance of the URL structhttps://golang.org/pkg/net/url/#URL

Once the given URL is parsed correctly, then it will return the URI object. We can then access the below information from the URI

Scheme

User Info

Hostname

Port

Pathname

Query Params

Fragment

Once we have all the parts we can concatenate them to get the full hostname along with the port. We will parse the below URL

https://test:abcd123@golangbyexample.com:8000/tutorials/intro?type=advance&compact=false#history

Then the full hostname along with port will be

https://golangbyexample.com:8000

Program

Below is the program for the same.

package main

import (
	"fmt"
	"log"
	"net/url"
)

func main() {
	input_url := "https://test:abcd123@golangbyexample.com:8000/tutorials/intro?type=advance&compact=false#history"
	u, err := url.Parse(input_url)
	if err != nil {
		log.Fatal(err)
	}

	fullHostname := u.Scheme + "://" + u.Host

	fmt.Println(fullHostname)
}

Output

https://golangbyexample.com:8000:8000

golang