如何发现网络设备类型？

Question

On any given computer (OSX, WIn, Lin, etc) there are any number of connected network adapters... whether it's Wi-Fi, BlueTooth, Ethernet or other... And depending on the routing there may be multiple active devices.

In my NARROW use case I want to know what the current CONNECTED default adapter type (Wi-Fi etc...) although once that's known there are easily some others as well as some details.

Here is an example shell script that mostly works and converting it to Go is easy enough... it just seems to me there must be a native GO way.

Answer 1

You can use Interfaces() from net package

Sample:

package main

import (
    "fmt"
    "net"
)

func main() {
    l, err := net.Interfaces()
    if err != nil {
        panic(err)

    }
    for _, f := range l {
        if f.Flags&net.FlagUp > 0 {
            fmt.Printf("%s is up
", f.Name)
        }
    }
}