mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
package main
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import (
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"fmt"
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"net"
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"os/exec"
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"strings"
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"github.com/go-check/check"
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)
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func startServerContainer(c *check.C, proto string, port int) string {
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pStr := fmt.Sprintf("%d:%d", port, port)
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bCmd := fmt.Sprintf("nc -lp %d && echo bye", port)
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cmd := []string{"-d", "-p", pStr, "busybox", "sh", "-c", bCmd}
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if proto == "udp" {
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cmd = append(cmd, "-u")
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}
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name := "server"
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if err := waitForContainer(name, cmd...); err != nil {
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c.Fatalf("Failed to launch server container: %v", err)
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}
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return name
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}
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func getExternalAddress(c *check.C) net.IP {
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iface, err := net.InterfaceByName("eth0")
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if err != nil {
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c.Skip(fmt.Sprintf("Test not running with `make test`. Interface eth0 not found: %v", 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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c.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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c.Fatalf("Error retrieving the up for eth0: %s", err)
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}
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return ifaceIP
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}
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func getContainerLogs(c *check.C, containerID string) string {
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runCmd := exec.Command(dockerBinary, "logs", containerID)
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out, _, err := runCommandWithOutput(runCmd)
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if err != nil {
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c.Fatal(out, err)
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}
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return strings.Trim(out, "\r\n")
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}
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func getContainerStatus(c *check.C, containerID string) string {
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out, err := inspectField(containerID, "State.Running")
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c.Assert(err, check.IsNil)
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return out
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}
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func (s *DockerSuite) TestNetworkNat(c *check.C) {
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testRequires(c, SameHostDaemon, NativeExecDriver)
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defer deleteAllContainers()
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srv := startServerContainer(c, "tcp", 8080)
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// Spawn a new container which connects to the server through the
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// interface address.
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endpoint := getExternalAddress(c)
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runCmd := exec.Command(dockerBinary, "run", "busybox", "sh", "-c", fmt.Sprintf("echo hello world | nc -w 30 %s 8080", endpoint))
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if out, _, err := runCommandWithOutput(runCmd); err != nil {
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c.Fatalf("Failed to connect to server: %v (output: %q)", err, string(out))
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}
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result := getContainerLogs(c, srv)
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// Ideally we'd like to check for "hello world" but sometimes
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// nc doesn't show the data it received so instead let's look for
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// the output of the 'echo bye' that should be printed once
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// the nc command gets a connection
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expected := "bye"
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if !strings.Contains(result, expected) {
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c.Fatalf("Unexpected output. Expected: %q, received: %q", expected, result)
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}
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}
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func (s *DockerSuite) TestNetworkLocalhostTCPNat(c *check.C) {
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testRequires(c, SameHostDaemon, NativeExecDriver)
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defer deleteAllContainers()
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srv := startServerContainer(c, "tcp", 8081)
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// Attempt to connect from the host to the listening container.
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conn, err := net.Dial("tcp", "localhost:8081")
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if err != nil {
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c.Fatalf("Failed to connect to container (%v)", err)
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}
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if _, err := conn.Write([]byte("hello world\n")); err != nil {
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c.Fatal(err)
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}
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conn.Close()
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result := getContainerLogs(c, srv)
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// Ideally we'd like to check for "hello world" but sometimes
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// nc doesn't show the data it received so instead let's look for
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// the output of the 'echo bye' that should be printed once
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// the nc command gets a connection
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expected := "bye"
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if !strings.Contains(result, expected) {
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c.Fatalf("Unexpected output. Expected: %q, received: %q", expected, result)
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}
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}
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