pkg syscall (darwin-arm64), func Sendmsg(int, []uint8, []uint8, Sockaddr, int) error
pkg syscall (darwin-arm64), func SendmsgN(int, []uint8, []uint8, Sockaddr, int) (int, error)
pkg syscall (darwin-arm64), func Sendto(int, []uint8, int, Sockaddr) error
pkg syscall (darwin-arm64), func SetBpf //deprecated
pkg syscall (darwin-arm64), func SetBpf(int, []BpfInsn) error
pkg syscall (darwin-arm64), func SetBpfBuflen //deprecated

	sc.serveG.check()
	var streamID uint32
	var send int32
	if st == nil {
		send = sc.inflow.add(n)
	} else {
		streamID = st.id
		send = st.inflow.add(n)
	}
	if send == 0 {
		return
	}
	sc.writeFrame(http2FrameWriteRequest{
		write:  http2writeWindowUpdate{streamID: streamID, n: uint32(send)},
		stream: st,
	})
}

  <mime-type type="application/mbms-register-response+xml"/>
  <mime-type type="application/mbms-user-service-description+xml"/>

  <mime-type type="application/mbox">
    <!-- MBOX files start with "From [sender] [date]" -->
    <!-- To avoid false matches, check for other headers after that -->

    <magic priority="70">
      <match value="From " type="string" offset="0">