/
nat_test.go
184 lines (147 loc) · 5.29 KB
/
nat_test.go
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// SPDX-FileCopyrightText: 2023 Steffen Vogel <post@steffenvogel.de>
// SPDX-License-Identifier: Apache-2.0
package gont_test
import (
"os"
"testing"
g "cunicu.li/gont/v2/pkg"
o "cunicu.li/gont/v2/pkg/options"
"github.com/stretchr/testify/require"
)
// TestPingNAT performs and end-to-end ping test
// through a NAT topology
//
// h1 <-> sw1 <-> nat1 <-> sw2 <-> h2
func TestPingNATIPv4(t *testing.T) {
n, err := g.NewNetwork(*nname, globalNetworkOptions...)
require.NoError(t, err, "Failed to create network")
defer n.Close()
sw1, err := n.AddSwitch("sw1")
require.NoError(t, err, "Failed to create switch")
sw2, err := n.AddSwitch("sw2")
require.NoError(t, err, "Failed to create switch")
h1, err := n.AddHost("h1",
o.DefaultGatewayIP("10.0.1.1"),
g.NewInterface("veth0", sw1,
o.AddressIP("10.0.1.2/24")))
require.NoError(t, err, "Failed to create host")
h2, err := n.AddHost("h2",
o.DefaultGatewayIP("10.0.2.1"),
g.NewInterface("veth0", sw2,
o.AddressIP("10.0.2.2/24")))
require.NoError(t, err, "Failed to create host")
_, err = n.AddNAT("nat1",
g.NewInterface("veth0", sw1, o.SouthBound,
o.AddressIP("10.0.1.1/24")),
g.NewInterface("veth1", sw2, o.NorthBound,
o.AddressIP("10.0.2.1/24")))
require.NoError(t, err, "Failed to create NAT")
_, err = h1.Ping(h2)
require.NoError(t, err, "Failed to ping h1 -> h2")
err = h1.Traceroute(h2)
require.NoError(t, err, "Failed to traceroute h1 -> h2")
}
// TestPingNATIPv6 performs and end-to-end ping test
// through a NAT topology using IPv6 addressing
//
// h1 <-> sw1 <-> nat1 <-> sw2 <-> h2
func TestPingNATIPv6(t *testing.T) {
n, err := g.NewNetwork(*nname, globalNetworkOptions...)
require.NoError(t, err, "Failed to create network")
defer n.Close()
sw1, err := n.AddSwitch("sw1")
require.NoError(t, err, "Failed to create switch")
sw2, err := n.AddSwitch("sw2")
require.NoError(t, err, "Failed to create switch")
h1, err := n.AddHost("h1",
o.DefaultGatewayIP("fc::1:1"),
g.NewInterface("veth0", sw1,
o.AddressIP("fc::1:2/112")))
require.NoError(t, err, "Failed to create host")
h2, err := n.AddHost("h2",
o.DefaultGatewayIP("fc::2:1"),
g.NewInterface("veth0", sw2,
o.AddressIP("fc::2:2/112")))
require.NoError(t, err, "Failed to create host")
_, err = n.AddNAT("nat1",
g.NewInterface("veth0", sw1, o.SouthBound,
o.AddressIP("fc::1:1/112")),
g.NewInterface("veth1", sw2, o.NorthBound,
o.AddressIP("fc::2:1/112")))
require.NoError(t, err, "Failed to create NAT")
_, err = h1.PingWithNetwork(h2, "ip6")
require.NoError(t, err, "Failed to ping h1 -> h2")
err = h1.Traceroute(h2, "-6")
require.NoError(t, err, "Failed to traceroute h1 -> h2")
}
// TestPingDoubleNAT performs and end-to-end ping test
// through a double / carrier-grade NAT topology
//
// h1 <-> sw1 <-> nat1 <-> sw2 <-> nat2 <-> sw3 <-> h2
func TestPingDoubleNAT(t *testing.T) {
n, err := g.NewNetwork(*nname, globalNetworkOptions...)
require.NoError(t, err, "Failed to create network")
defer n.Close()
sw1, err := n.AddSwitch("sw1")
require.NoError(t, err, "Failed to create switch")
sw2, err := n.AddSwitch("sw2")
require.NoError(t, err, "Failed to create switch")
sw3, err := n.AddSwitch("sw3")
require.NoError(t, err, "Failed to create switch")
h1, err := n.AddHost("h1",
o.DefaultGatewayIP("10.0.1.1"),
g.NewInterface("veth0", sw1,
o.AddressIP("10.0.1.2/24")))
require.NoError(t, err, "Failed to create host")
h2, err := n.AddHost("h2",
o.DefaultGatewayIP("10.0.2.1"),
g.NewInterface("veth0", sw3,
o.AddressIP("10.0.2.2/24")))
require.NoError(t, err, "Failed to create host")
_, err = n.AddNAT("nat1",
o.DefaultGatewayIP("10.0.3.1"),
g.NewInterface("veth1", sw1, o.SouthBound,
o.AddressIP("10.0.1.1/24")),
g.NewInterface("veth0", sw2, o.NorthBound,
o.AddressIP("10.0.3.2/24")))
require.NoError(t, err, "Failed to create NAT router")
_, err = n.AddNAT("nat2",
g.NewInterface("veth1", sw2, o.SouthBound,
o.AddressIP("10.0.3.1/24")),
g.NewInterface("veth0", sw3, o.NorthBound,
o.AddressIP("10.0.2.1/24")))
require.NoError(t, err, "Failed to create NAT router")
_, err = h1.Ping(h2)
require.NoError(t, err, "Failed to ping h1 <-> h2")
err = h1.Traceroute(h2)
require.NoError(t, err, "Failed to traceroute h1 -> h2")
}
// TestPingHostNAT performs and end-to-end ping test
// between a virtual host and the outside host network
//
// h1 <-> sw <-> n1 (host) <-> external
func TestPingHostNAT(t *testing.T) {
if _, ok := os.LookupEnv("GITHUB_WORKFLOW"); ok {
t.Skip("GitHubs Azure based CI environment does not allow to ping external targets")
}
n, err := g.NewNetwork(*nname, globalNetworkOptions...)
require.NoError(t, err, "Failed to create network")
defer n.Close()
sw1, err := n.AddSwitch("sw1")
require.NoError(t, err, "Failed to create switch")
h1, err := n.AddHost("h1",
o.DefaultGatewayIP("10.0.0.1"),
g.NewInterface("veth0", sw1,
o.AddressIP("10.0.0.2/24")))
require.NoError(t, err, "Failed to create host")
_, err = n.AddHostNAT("n1",
g.NewInterface("veth0", sw1, o.SouthBound,
o.AddressIP("10.0.0.1/24")))
require.NoError(t, err, "Failed to create host NAT")
_, err = h1.Run("ping", "-c", 1, "1.1.1.1")
require.NoError(t, err, "Failed to ping")
_, err = h1.Run("ping", "-c", 1, "www.rwth-aachen.de")
require.NoError(t, err)
_, err = h1.Ping(n.HostNode)
require.NoError(t, err)
}