netutils

Documentation

Overview

Package netutils contains utilities to work with ports and URLs.

Index

• func FindUnusedTCPPort() int
• func RootDomain(url string) string

Functions

func FindUnusedTCPPort

func FindUnusedTCPPort() int

FindUnusedTCPPort finds an unused TCP port by opening a TCP port on an unused port chosen by the operating system, recovering the port number and immediately closing the socket.

This function does not guarantee that multiple calls will return different port numbers, so it might cause tests to flake out. However, the odds of this happening are low. In the future, we might decide to keep track of previously returned port numbers, and keep probing the OS until it returns a previously unseen port number.

func RootDomain

func RootDomain(url string) string

RootDomain returns the root domain, i.e. "perf.skia.org" => "skia.org".