diff options
Diffstat (limited to 'src/plugins/nat/test/test_nat44.py')
| -rw-r--r-- | src/plugins/nat/test/test_nat44.py | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/src/plugins/nat/test/test_nat44.py b/src/plugins/nat/test/test_nat44.py index de4210fa3ff..c71b706cc34 100644 --- a/src/plugins/nat/test/test_nat44.py +++ b/src/plugins/nat/test/test_nat44.py @@ -5726,6 +5726,14 @@ class TestNAT44EndpointDependent(MethodHolder): def test_tcp_close(self): """ Close TCP session from inside network - output feature """ + old_timeouts = self.vapi.nat_get_timeouts() + new_transitory = 2 + self.vapi.nat_set_timeouts( + udp=old_timeouts.udp, + tcp_established=old_timeouts.tcp_established, + icmp=old_timeouts.icmp, + tcp_transitory=new_transitory) + self.vapi.nat44_forwarding_enable_disable(enable=1) self.nat44_add_address(self.pg1.local_ip4) twice_nat_addr = '10.0.1.3' @@ -5808,9 +5816,34 @@ class TestNAT44EndpointDependent(MethodHolder): self.pg_start() self.pg1.get_capture(1) - sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, - 0) + # session now in transitory timeout + # try SYN packet out->in - should be dropped + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=service_ip) / + TCP(sport=33898, dport=80, flags="S")) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.sleep(new_transitory, "wait for transitory timeout") + self.pg0.assert_nothing_captured(0) + + # session should still exist + sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0) + self.assertEqual(len(sessions) - start_sessnum, 1) + + # send FIN+ACK packet out -> in - will cause session to be wiped + # but won't create a new session + p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / + IP(src=self.pg1.remote_ip4, dst=service_ip) / + TCP(sport=33898, dport=80, flags="FA", seq=300, ack=101)) + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0) self.assertEqual(len(sessions) - start_sessnum, 0) + self.pg0.assert_nothing_captured(0) def test_tcp_session_close_in(self): """ Close TCP session from inside network """ |