ZSocket is a library that wraps the linux zero-copy socket syscall to create a ring buffer in a memory mapped file. It also contains some utility functions and types to help with a handful of layer 2 and layer 3 types. It is a lot like libcap, except it has easy to understand facilities for Writing to an interface. Example
The following program will print out any recognized nettypes, going down to layer 3.
You can find your interface index number by running ip link.
package main
import (
"github.com/nathanjsweet/zsocket"
"github.com/nathanjsweet/zsocket/nettypes"
)
func main() {
// args: interface index, options, ring block numbers, packet types
zs, err := zsocket.NewZSocket(15, zsocket.ENABLE_RX, 256, nettypes.All)
if err != nil {
panic(err)
}
zs.Listen(func(f *nettypes.Frame, frameLen uint32) {
fmt.Printf(f.String(frameLen, 0))
})
}