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//go:build darwin
package quic
import (
"encoding/binary"
"net/netip"
"syscall"
"golang.org/x/sys/unix"
)
const (
msgTypeIPTOS = unix.IP_RECVTOS
ipv4PKTINFO = unix.IP_RECVPKTINFO
)
const ecnIPv4DataLen = 4
// ReadBatch only returns a single packet on OSX,
// see https://godoc.org/golang.org/x/net/ipv4#PacketConn.ReadBatch.
const batchSize = 1
func parseIPv4PktInfo(body []byte) (ip netip.Addr, ifIndex uint32, ok bool) {
// struct in_pktinfo {
// unsigned int ipi_ifindex; /* Interface index */
// struct in_addr ipi_spec_dst; /* Local address */
// struct in_addr ipi_addr; /* Header Destination address */
// };
if len(body) != 12 {
return netip.Addr{}, 0, false
}
return netip.AddrFrom4(*(*[4]byte)(body[8:12])), binary.NativeEndian.Uint32(body), true
}
func isGSOEnabled(syscall.RawConn) bool { return false }
func isECNEnabled() bool { return !isECNDisabledUsingEnv() }
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