| package main |
| |
| import ( |
| "fmt" |
| "net" |
| "os/exec" |
| "strings" |
| "testing" |
| ) |
| |
| func TestNetworkNat(t *testing.T) { |
| iface, err := net.InterfaceByName("eth0") |
| if err != nil { |
| t.Skip("Test not running with `make test`. Interface eth0 not found: %s", err) |
| } |
| |
| ifaceAddrs, err := iface.Addrs() |
| if err != nil || len(ifaceAddrs) == 0 { |
| t.Fatalf("Error retrieving addresses for eth0: %v (%d addresses)", err, len(ifaceAddrs)) |
| } |
| |
| ifaceIP, _, err := net.ParseCIDR(ifaceAddrs[0].String()) |
| if err != nil { |
| t.Fatalf("Error retrieving the up for eth0: %s", err) |
| } |
| |
| runCmd := exec.Command(dockerBinary, "run", "-dt", "-p", "8080:8080", "busybox", "nc", "-lp", "8080") |
| out, _, err := runCommandWithOutput(runCmd) |
| errorOut(err, t, fmt.Sprintf("run1 failed with errors: %v (%s)", err, out)) |
| |
| cleanedContainerID := stripTrailingCharacters(out) |
| |
| runCmd = exec.Command(dockerBinary, "run", "busybox", "sh", "-c", fmt.Sprintf("echo hello world | nc -w 30 %s 8080", ifaceIP)) |
| out, _, err = runCommandWithOutput(runCmd) |
| errorOut(err, t, fmt.Sprintf("run2 failed with errors: %v (%s)", err, out)) |
| |
| runCmd = exec.Command(dockerBinary, "logs", cleanedContainerID) |
| out, _, err = runCommandWithOutput(runCmd) |
| errorOut(err, t, fmt.Sprintf("failed to retrieve logs for container: %v %v", cleanedContainerID, err)) |
| out = strings.Trim(out, "\r\n") |
| |
| if expected := "hello world"; out != expected { |
| t.Fatalf("Unexpected output. Expected: %q, received: %q for iface %s", expected, out, ifaceIP) |
| } |
| |
| killCmd := exec.Command(dockerBinary, "kill", cleanedContainerID) |
| out, _, err = runCommandWithOutput(killCmd) |
| errorOut(err, t, fmt.Sprintf("failed to kill container: %v %v", out, err)) |
| deleteAllContainers() |
| |
| logDone("network - make sure nat works through the host") |
| } |