clash/component/dhcp/conn.go

30 lines
738 B
Go

package dhcp
import (
"context"
"net"
"net/netip"
"runtime"
"github.com/metacubex/mihomo/component/dialer"
)
func ListenDHCPClient(ctx context.Context, ifaceName string) (net.PacketConn, error) {
listenAddr := "0.0.0.0:68"
if runtime.GOOS == "linux" || runtime.GOOS == "android" {
listenAddr = "255.255.255.255:68"
}
options := []dialer.Option{
dialer.WithInterface(ifaceName),
dialer.WithAddrReuse(true),
}
// fallback bind on windows, because syscall bind can not receive broadcast
if runtime.GOOS == "windows" {
options = append(options, dialer.WithFallbackBind(true))
}
return dialer.ListenPacket(ctx, "udp4", listenAddr, netip.AddrPortFrom(netip.AddrFrom4([4]byte{255, 255, 255, 255}), 67), options...)
}