extnet

Documentation

Overview

Package extnet extend network

Index

• func IsDomain(host string) bool
• func IsIntranet(host string) bool
• func SplitHostPort(addr string) (string, uint16, error)

Functions

func IsDomain

func IsDomain(host string) bool

IsDomain 是否是域名,只检查host或ip,不可带port,否则会误判

func IsIntranet

func IsIntranet(host string) bool

IsIntranet is intranet network,if host is domain,it will looks up host using the local resolver. net.LookupIP may cause deadlock in windows see https://github.com/golang/go/issues/24178 局域网IP段:

A类: 10.0.0.0~10.255.255.255
B类: 172.16.0.0~172.31.255.255
C类: 192.168.0.0~192.168.255.255

func SplitHostPort

func SplitHostPort(addr string) (string, uint16, error)

SplitHostPort splits a network address of the form "host:port", "host%zone:port", "[host]:port" or "[host%zone]:port" into host or host%zone and port.

A literal IPv6 address in hostport must be enclosed in square brackets, as in "[::1]:80", "[::1%lo0]:80".

See func Dial for a description of the hostport parameter, and host and port results.