TCP/UDP Port Number

const re = new RegExp(":(6553[0-5]|655[0-2]\\d|65[0-4]\\d{2}|6[0-4]\\d{3}|[1-5]?\\d{1,4})\\b", "g");
const input = "http://localhost:8080";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

import re

pattern = re.compile(r":(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]?\d{1,4})\b")
input_text = "http://localhost:8080"
for m in pattern.finditer(input_text):
    print(m.group(0))

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`:(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]?\d{1,4})\b`)
	input := `http://localhost:8080`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}