(t *testing.T)
| 85 | } |
| 86 | |
| 87 | func TestReadPacketWithRXTimestamp(t *testing.T) { |
| 88 | request := []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 42} |
| 89 | // listen to incoming udp packets |
| 90 | conn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("localhost"), Port: 0}) |
| 91 | require.NoError(t, err) |
| 92 | defer conn.Close() |
| 93 | |
| 94 | // get connection file descriptor |
| 95 | connFd, err := ConnFd(conn) |
| 96 | require.NoError(t, err) |
| 97 | |
| 98 | // Allow reading of kernel timestamps via socket |
| 99 | err = EnableSWTimestampsRx(connFd) |
| 100 | require.NoError(t, err) |
| 101 | |
| 102 | err = unix.SetNonblock(connFd, false) |
| 103 | require.NoError(t, err) |
| 104 | |
| 105 | // Send a client request |
| 106 | timeout := 1 * time.Second |
| 107 | cconn, err := net.DialTimeout("udp", conn.LocalAddr().String(), timeout) |
| 108 | require.NoError(t, err) |
| 109 | defer cconn.Close() |
| 110 | _, err = cconn.Write(request) |
| 111 | require.NoError(t, err) |
| 112 | |
| 113 | // read kernel timestamp from incoming packet |
| 114 | data, returnaddr, nowKernelTimestamp, err := ReadPacketWithRXTimestamp(connFd) |
| 115 | require.NoError(t, err) |
| 116 | require.Equal(t, request, data, "We should have the same request arriving on the server") |
| 117 | require.Equal(t, time.Now().Unix()/10, nowKernelTimestamp.Unix()/10, "kernel timestamps should be within 10s") |
| 118 | requireEqualNetAddrSockAddr(t, cconn.LocalAddr(), returnaddr) |
| 119 | } |
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