gateway
A simple library for discovering the IP address of the default gateway.
Example:
package main
import (
"fmt"
"github.com/jackpal/gateway"
)
func main() {
gateway, err := gateway.DiscoverGateway()
if err != nil {
fmt.Println(err)
} else {
fmt.Println("Gateway:", gateway.String())
}
}
Provides implementations for:
- Darwin (macOS)
- Dragonfly
- FreeBSD
- Linux
- NetBSD
- OpenBSD
- Solaris and illumos
- Windows
Other platforms use an implementation that always returns an error.
Pull requests for other OSs happily considered!
Versions
v1.0.15
Update dependencies to latest versions. This was done to squelch a github security
alert caused by depending upon an old version of x/net. This is the first time I've
updated module versions, the tests pass, so hopefully everything's good.
v1.0.14
v1.0.13
- Add tools/check-cross-compile.sh to check that the code compiles for various OSs.
- Fix compilation errors exposed by tools/check-cross-compile.sh.
v1.0.12
- If there are multiple default gateways, Windows now returns the gateway with the lowest metric.
- Fix solaris build break. (In theory, IDK how to test this easily.)
- Upgrade to golang 1.21
- Upgrade golang.org/x/net version, makes dependabot happy. Probably was not any actual security
issue because gateway doesn't use any of the APIs of golang.org/x/net that had security issues.
v1.0.11
- Implement DiscoverInterface for BSD-like OSes.
v1.0.10
- Fix non-BSD-based builds.
v1.0.9
- Add go.mod and go.sum files.
- Use "golang.org/x/net/route" to implement all BSD variants.
- As a side effect this adds support for Dragonfly and NetBSD.
- Add example to README.
- Remove broken continuous integration.
v1.0.8
- Add support for OpenBSD
- Linux parser now supports gateways with an IP address of 0.0.0.0
- Fall back to
netstat
on darwin systems if route
fails.
- Simplify Linux /proc/net/route parsers.