diff options
Diffstat (limited to 'pkg/tcpip/checker')
| -rw-r--r-- | pkg/tcpip/checker/checker.go | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/pkg/tcpip/checker/checker.go b/pkg/tcpip/checker/checker.go index 518719de4..8e0e49efa 100644 --- a/pkg/tcpip/checker/checker.go +++ b/pkg/tcpip/checker/checker.go @@ -86,6 +86,22 @@ func DstAddr(addr tcpip.Address) NetworkChecker { } } +// TTL creates a checker that checks the TTL (ipv4) or HopLimit (ipv6). +func TTL(ttl uint8) NetworkChecker { + return func(t *testing.T, h []header.Network) { + var v uint8 + switch ip := h[0].(type) { + case header.IPv4: + v = ip.TTL() + case header.IPv6: + v = ip.HopLimit() + } + if v != ttl { + t.Fatalf("Bad TTL, got %v, want %v", v, ttl) + } + } +} + // PayloadLen creates a checker that checks the payload length. func PayloadLen(plen int) NetworkChecker { return func(t *testing.T, h []header.Network) { |