nat: adding support for icmp-error msg
Extending tests.
Type: test
@@ -914,6 +914,41 @@ class NAT44EDTestCase(VppTestCase):
class TestNAT44ED(NAT44EDTestCase):
""" NAT44ED Test Case """
+ def test_icmp_error(self):
+ """ NAT44ED test ICMP error message with inner header"""
+
+ payload = "H" * 10
+
+ self.nat_add_address(self.nat_addr)
+ self.nat_add_inside_interface(self.pg0)
+ self.nat_add_outside_interface(self.pg1)
+
+ # in2out (initiate connection)
+ p1 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=21, dport=20) / payload)
+
+ self.pg0.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)[0]
+
+ # out2in (send error message)
+ p2 = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ ICMP(type='dest-unreach', code='port-unreachable') /
+ capture[IP:])
+
+ self.pg1.add_stream(p2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ capture = self.pg0.get_capture(1)[0]
+
+ self.logger.info(ppp("p1 packet:", p1))
+ self.logger.info(ppp("p2 packet:", p2))
+ self.logger.info(ppp("capture packet:", capture))
+
def test_users_dump(self):
""" NAT44ED API test - nat44_user_dump """
