search
HomeBackend DevelopmentGolangHow to get my wifi IP address using Golang?

如何使用 Golang 获取我的 wifi IP 地址?

php editor Xiaoxin is here to introduce how to use Golang to obtain your own wifi IP address. Golang is an efficient and concise programming language that provides many convenient methods to handle network-related tasks. To get the wifi IP address, we can use Golang's net package and os/exec package to execute some system commands. With some simple code, we can get the IP address of the wifi we are connected to. Let’s take a look at the specific implementation process!

Question content

func getLocalIP() ([]string, error) {
    addrs, err := net.InterfaceAddrs()
    if err != nil {
        return nil, err
    }
    IPs := make([]string, 0)
    for _, a := range addrs {
        if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
            if ipNet.IP.To4() != nil {
                IPs = append(IPs, ipNet.IP.To4().String())
            }
        }
    }
    return IPs, nil
}
func TestGetLocalIP() {
    addrs, _ := getLocalIP()
    for _, a := range addrs {
        fmt.Println(a)
    }
}

I have used this but it gave me a list of ip addresses.

I just want to get my wifi local address, what should I do?

Solution

You need to know at least one of the two pieces of information:

  1. The name of the correct interface (usually en0 on mac, for example, but ymmv)
  2. Your wireless network address, including mask length - addresses like 192.168.0.0/16 or 192.168.0.0/24 are common, but you have to figure this out ahead of time.

If you only know the interface name:

ifs, _ := net.interfaces()
for _, ifi := range ifs {
  if ifi.name == "en0" { // or whatever other filter you want
    addrs, _ := ifi.addresses()
    for _, a := range addrs {
      // filter to get the one you want, typically unicast ip4
    }
  }
}

simpler:

if, _ := net.interfacebyname("en0")
addrs, _ := if.addresses()
for _, a := range addrs {
  // as before, filter for the address you want
}

If you know the network address of the wireless network

// Loop over interfaces, get addrs, then loop over addresses and get IPs for those that have them
if ip.Mask(net.CIDRMask(16, 32)) == myNetworkAddress {
  // The interface you got this IP from is probably your wifi interface
}

Which method to choose

Relying on an interface with a specific name will generally not be portable. So while my assumption is that you just want to run this on your own workstation, if this is something that needs to run across multiple hosts, you'll probably want to at least start by matching the correct network address. There are other tricks - if you know assuming you will be running in a server farm where each host has a nic from manufacturer xxx, you can look up the mac address and see if it is from that manufacturer - you can try this here. You can use other filters as well, but these will be a good fit for your personal use case.

The above is the detailed content of How to get my wifi IP address using Golang?. For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:stackoverflow. If there is any infringement, please contact admin@php.cn delete
Go vs. Other Languages: A Comparative AnalysisGo vs. Other Languages: A Comparative AnalysisApr 28, 2025 am 12:17 AM

Goisastrongchoiceforprojectsneedingsimplicity,performance,andconcurrency,butitmaylackinadvancedfeaturesandecosystemmaturity.1)Go'ssyntaxissimpleandeasytolearn,leadingtofewerbugsandmoremaintainablecode,thoughitlacksfeatureslikemethodoverloading.2)Itpe

Comparing init Functions in Go to Static Initializers in Other LanguagesComparing init Functions in Go to Static Initializers in Other LanguagesApr 28, 2025 am 12:16 AM

Go'sinitfunctionandJava'sstaticinitializersbothservetosetupenvironmentsbeforethemainfunction,buttheydifferinexecutionandcontrol.Go'sinitissimpleandautomatic,suitableforbasicsetupsbutcanleadtocomplexityifoverused.Java'sstaticinitializersoffermorecontr

Common Use Cases for the init Function in GoCommon Use Cases for the init Function in GoApr 28, 2025 am 12:13 AM

ThecommonusecasesfortheinitfunctioninGoare:1)loadingconfigurationfilesbeforethemainprogramstarts,2)initializingglobalvariables,and3)runningpre-checksorvalidationsbeforetheprogramproceeds.Theinitfunctionisautomaticallycalledbeforethemainfunction,makin

Channels in Go: Mastering Inter-Goroutine CommunicationChannels in Go: Mastering Inter-Goroutine CommunicationApr 28, 2025 am 12:04 AM

ChannelsarecrucialinGoforenablingsafeandefficientcommunicationbetweengoroutines.Theyfacilitatesynchronizationandmanagegoroutinelifecycle,essentialforconcurrentprogramming.Channelsallowsendingandreceivingvalues,actassignalsforsynchronization,andsuppor

Wrapping Errors in Go: Adding Context to Error ChainsWrapping Errors in Go: Adding Context to Error ChainsApr 28, 2025 am 12:02 AM

In Go, errors can be wrapped and context can be added via errors.Wrap and errors.Unwrap methods. 1) Using the new feature of the errors package, you can add context information during error propagation. 2) Help locate the problem by wrapping errors through fmt.Errorf and %w. 3) Custom error types can create more semantic errors and enhance the expressive ability of error handling.

Security Considerations When Developing with GoSecurity Considerations When Developing with GoApr 27, 2025 am 12:18 AM

Gooffersrobustfeaturesforsecurecoding,butdevelopersmustimplementsecuritybestpracticeseffectively.1)UseGo'scryptopackageforsecuredatahandling.2)Manageconcurrencywithsynchronizationprimitivestopreventraceconditions.3)SanitizeexternalinputstoavoidSQLinj

Understanding Go's error InterfaceUnderstanding Go's error InterfaceApr 27, 2025 am 12:16 AM

Go's error interface is defined as typeerrorinterface{Error()string}, allowing any type that implements the Error() method to be considered an error. The steps for use are as follows: 1. Basically check and log errors, such as iferr!=nil{log.Printf("Anerroroccurred:%v",err)return}. 2. Create a custom error type to provide more information, such as typeMyErrorstruct{MsgstringDetailstring}. 3. Use error wrappers (since Go1.13) to add context without losing the original error message,

Error Handling in Concurrent Go ProgramsError Handling in Concurrent Go ProgramsApr 27, 2025 am 12:13 AM

ToeffectivelyhandleerrorsinconcurrentGoprograms,usechannelstocommunicateerrors,implementerrorwatchers,considertimeouts,usebufferedchannels,andprovideclearerrormessages.1)Usechannelstopasserrorsfromgoroutinestothemainfunction.2)Implementanerrorwatcher

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!