84 lines
3.2 KiB
Go
84 lines
3.2 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"github.com/dotcloud/docker/daemon"
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"net"
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"os/exec"
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"path/filepath"
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"testing"
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)
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func TestNetworkNat(t *testing.T) {
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ncPath, err := exec.LookPath("nc")
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if err != nil {
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t.Skip("Test not running with `make test`. Netcat not found: %s", err)
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}
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ncPath, err = filepath.EvalSymlinks(ncPath)
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if err != nil {
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t.Fatalf("Error resolving netcat symlink: %s", err)
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}
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iface, err := net.InterfaceByName("eth0")
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if err != nil {
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t.Skip("Test not running with `make test`. Interface eth0 not found: %s", err)
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}
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ifaceAddrs, err := iface.Addrs()
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if err != nil || len(ifaceAddrs) == 0 {
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t.Fatalf("Error retrieving addresses for eth0: %v (%d addresses)", err, len(ifaceAddrs))
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}
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ifaceIp, _, err := net.ParseCIDR(ifaceAddrs[0].String())
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if err != nil {
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t.Fatalf("Error retrieving the up for eth0: %s", err)
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}
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runCmd := exec.Command(dockerBinary, "run", "-d",
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"-v", ncPath+":/bin/nc",
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"-v", "/lib/x86_64-linux-gnu/libc.so.6:/lib/libc.so.6", "-v", "/lib/x86_64-linux-gnu/libresolv.so.2:/lib/libresolv.so.2", "-v", "/lib/x86_64-linux-gnu/libbsd.so.0:/lib/libbsd.so.0", "-v", "/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2:/lib/ld-linux-x86-64.so.2",
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"-p", "8080", "busybox", "/bin/nc", "-lp", "8080")
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out, _, err := runCommandWithOutput(runCmd)
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errorOut(err, t, fmt.Sprintf("run1 failed with errors: %v (%s)", err, out))
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cleanedContainerID := stripTrailingCharacters(out)
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inspectCmd := exec.Command(dockerBinary, "inspect", cleanedContainerID)
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inspectOut, _, err := runCommandWithOutput(inspectCmd)
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errorOut(err, t, fmt.Sprintf("out should've been a container id: %v %v", inspectOut, err))
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containers := []*daemon.Container{}
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if err := json.Unmarshal([]byte(inspectOut), &containers); err != nil {
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t.Fatalf("Error inspecting the container: %s", err)
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}
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if len(containers) != 1 {
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t.Fatalf("Unepexted container count. Expected 0, recieved: %d", len(containers))
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}
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port8080, exists := containers[0].NetworkSettings.Ports["8080/tcp"]
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if !exists || len(port8080) == 0 {
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t.Fatal("Port 8080/tcp not found in NetworkSettings")
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}
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runCmd = exec.Command(dockerBinary, "run",
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"-v", ncPath+":/bin/nc",
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"-v", "/lib/x86_64-linux-gnu/libc.so.6:/lib/libc.so.6", "-v", "/lib/x86_64-linux-gnu/libresolv.so.2:/lib/libresolv.so.2", "-v", "/lib/x86_64-linux-gnu/libbsd.so.0:/lib/libbsd.so.0", "-v", "/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2:/lib/ld-linux-x86-64.so.2",
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"-p", "8080", "busybox", "sh", "-c", fmt.Sprintf("echo hello world | /bin/nc -w 30 %s %s", ifaceIp, port8080[0].HostPort))
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out, _, err = runCommandWithOutput(runCmd)
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errorOut(err, t, fmt.Sprintf("run2 failed with errors: %v (%s)", err, out))
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runCmd = exec.Command(dockerBinary, "logs", cleanedContainerID)
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out, _, err = runCommandWithOutput(runCmd)
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errorOut(err, t, fmt.Sprintf("failed to retrieve logs for container: %v %v", cleanedContainerID, err))
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if expected := "hello world\n"; out != expected {
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t.Fatalf("Unexpected output. Expected: %s, recieved: -->%s<--", expected, out)
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}
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killCmd := exec.Command(dockerBinary, "kill", cleanedContainerID)
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out, _, err = runCommandWithOutput(killCmd)
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errorOut(err, t, fmt.Sprintf("failed to kill container: %v %v", out, err))
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deleteAllContainers()
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logDone("network - make sure nat works through the host")
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}
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