diff options
Diffstat (limited to 'test/test_snat.py')
| -rw-r--r-- | test/test_snat.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/test_snat.py b/test/test_snat.py index c6344a9e..c2f9280d 100644 --- a/test/test_snat.py +++ b/test/test_snat.py @@ -27,6 +27,17 @@ class MethodHolder(VppTestCase): def tearDown(self): super(MethodHolder, self).tearDown() + def check_tcp_checksum(self, pkt): + """ + Check TCP checksum in IP packet + + :param pkt: Packet to check TCP checksum + """ + new = pkt.__class__(str(pkt)) + del new['TCP'].chksum + new = new.__class__(str(new)) + self.assertEqual(new['TCP'].chksum, pkt['TCP'].chksum) + def create_stream_in(self, in_if, out_if, ttl=64): """ Create packet stream for inside network @@ -1111,6 +1122,7 @@ class TestSNAT(MethodHolder): self.assertEqual(ip.dst, server.ip4) self.assertNotEqual(tcp.sport, host_in_port) self.assertEqual(tcp.dport, server_in_port) + self.check_tcp_checksum(p) host_out_port = tcp.sport except: self.logger.error(ppp("Unexpected or invalid packet:", p)) @@ -1132,6 +1144,7 @@ class TestSNAT(MethodHolder): self.assertEqual(ip.dst, host.ip4) self.assertEqual(tcp.sport, server_out_port) self.assertEqual(tcp.dport, host_in_port) + self.check_tcp_checksum(p) except: self.logger.error(ppp("Unexpected or invalid packet:"), p) raise @@ -1182,6 +1195,7 @@ class TestSNAT(MethodHolder): self.assertNotEqual(packet[TCP].sport, self.tcp_port_in) self.assertEqual(packet[TCP].dport, server_tcp_port) self.tcp_port_out = packet[TCP].sport + self.check_tcp_checksum(packet) elif packet.haslayer(UDP): self.assertNotEqual(packet[UDP].sport, self.udp_port_in) self.assertEqual(packet[UDP].dport, server_udp_port) @@ -1218,6 +1232,7 @@ class TestSNAT(MethodHolder): if packet.haslayer(TCP): self.assertEqual(packet[TCP].dport, self.tcp_port_in) self.assertEqual(packet[TCP].sport, server_tcp_port) + self.check_tcp_checksum(packet) elif packet.haslayer(UDP): self.assertEqual(packet[UDP].dport, self.udp_port_in) self.assertEqual(packet[UDP].sport, server_udp_port) @@ -1253,6 +1268,7 @@ class TestSNAT(MethodHolder): self.assertEqual(packet[TCP].sport, self.tcp_port_in) self.assertEqual(packet[TCP].dport, server_tcp_port) self.tcp_port_out = packet[TCP].sport + self.check_tcp_checksum(packet) elif packet.haslayer(UDP): self.assertEqual(packet[UDP].sport, self.udp_port_in) self.assertEqual(packet[UDP].dport, server_udp_port) @@ -1289,6 +1305,7 @@ class TestSNAT(MethodHolder): if packet.haslayer(TCP): self.assertEqual(packet[TCP].dport, self.tcp_port_in) self.assertEqual(packet[TCP].sport, server_tcp_port) + self.check_tcp_checksum(packet) elif packet.haslayer(UDP): self.assertEqual(packet[UDP].dport, self.udp_port_in) self.assertEqual(packet[UDP].sport, server_udp_port) |