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|
package main
import (
"fmt"
"net"
"regexp"
"sort"
"strconv"
"strings"
"testing"
"gotest.tools/v3/assert"
)
func (s *DockerSuite) TestPortList(c *testing.T) {
testRequires(c, DaemonIsLinux)
// one port
out, _ := dockerCmd(c, "run", "-d", "-p", "9876:80", "busybox", "top")
firstID := strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", firstID, "80")
err := assertPortList(c, out, []string{"0.0.0.0:9876"})
// Port list is not correct
assert.NilError(c, err)
out, _ = dockerCmd(c, "port", firstID)
err = assertPortList(c, out, []string{"80/tcp -> 0.0.0.0:9876"})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "rm", "-f", firstID)
// three port
out, _ = dockerCmd(c, "run", "-d",
"-p", "9876:80",
"-p", "9877:81",
"-p", "9878:82",
"busybox", "top")
ID := strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", ID, "80")
err = assertPortList(c, out, []string{"0.0.0.0:9876"})
// Port list is not correct
assert.NilError(c, err)
out, _ = dockerCmd(c, "port", ID)
err = assertPortList(c, out, []string{
"80/tcp -> 0.0.0.0:9876",
"81/tcp -> 0.0.0.0:9877",
"82/tcp -> 0.0.0.0:9878"})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "rm", "-f", ID)
// more and one port mapped to the same container port
out, _ = dockerCmd(c, "run", "-d",
"-p", "9876:80",
"-p", "9999:80",
"-p", "9877:81",
"-p", "9878:82",
"busybox", "top")
ID = strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", ID, "80")
err = assertPortList(c, out, []string{"0.0.0.0:9876", "0.0.0.0:9999"})
// Port list is not correct
assert.NilError(c, err)
out, _ = dockerCmd(c, "port", ID)
err = assertPortList(c, out, []string{
"80/tcp -> 0.0.0.0:9876",
"80/tcp -> 0.0.0.0:9999",
"81/tcp -> 0.0.0.0:9877",
"82/tcp -> 0.0.0.0:9878"})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "rm", "-f", ID)
testRange := func() {
// host port ranges used
IDs := make([]string, 3)
for i := 0; i < 3; i++ {
out, _ = dockerCmd(c, "run", "-d",
"-p", "9090-9092:80",
"busybox", "top")
IDs[i] = strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", IDs[i])
err = assertPortList(c, out, []string{fmt.Sprintf("80/tcp -> 0.0.0.0:%d", 9090+i)})
// Port list is not correct
assert.NilError(c, err)
}
// test port range exhaustion
out, _, err = dockerCmdWithError("run", "-d",
"-p", "9090-9092:80",
"busybox", "top")
// Exhausted port range did not return an error
assert.Assert(c, err != nil, "out: %s", out)
for i := 0; i < 3; i++ {
dockerCmd(c, "rm", "-f", IDs[i])
}
}
testRange()
// Verify we ran re-use port ranges after they are no longer in use.
testRange()
// test invalid port ranges
for _, invalidRange := range []string{"9090-9089:80", "9090-:80", "-9090:80"} {
out, _, err = dockerCmdWithError("run", "-d",
"-p", invalidRange,
"busybox", "top")
// Port range should have returned an error
assert.Assert(c, err != nil, "out: %s", out)
}
// test host range:container range spec.
out, _ = dockerCmd(c, "run", "-d",
"-p", "9800-9803:80-83",
"busybox", "top")
ID = strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", ID)
err = assertPortList(c, out, []string{
"80/tcp -> 0.0.0.0:9800",
"81/tcp -> 0.0.0.0:9801",
"82/tcp -> 0.0.0.0:9802",
"83/tcp -> 0.0.0.0:9803"})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "rm", "-f", ID)
// test mixing protocols in same port range
out, _ = dockerCmd(c, "run", "-d",
"-p", "8000-8080:80",
"-p", "8000-8080:80/udp",
"busybox", "top")
ID = strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", ID)
// Running this test multiple times causes the TCP port to increment.
err = assertPortRange(c, out, []int{8000, 8080}, []int{8000, 8080})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "rm", "-f", ID)
}
func assertPortList(c *testing.T, out string, expected []string) error {
lines := strings.Split(strings.Trim(out, "\n "), "\n")
if len(lines) != len(expected) {
return fmt.Errorf("different size lists %s, %d, %d", out, len(lines), len(expected))
}
sort.Strings(lines)
sort.Strings(expected)
for i := 0; i < len(expected); i++ {
if lines[i] != expected[i] {
return fmt.Errorf("|" + lines[i] + "!=" + expected[i] + "|")
}
}
return nil
}
func assertPortRange(c *testing.T, out string, expectedTCP, expectedUDP []int) error {
lines := strings.Split(strings.Trim(out, "\n "), "\n")
var validTCP, validUDP bool
for _, l := range lines {
// 80/tcp -> 0.0.0.0:8015
port, err := strconv.Atoi(strings.Split(l, ":")[1])
if err != nil {
return err
}
if strings.Contains(l, "tcp") && expectedTCP != nil {
if port < expectedTCP[0] || port > expectedTCP[1] {
return fmt.Errorf("tcp port (%d) not in range expected range %d-%d", port, expectedTCP[0], expectedTCP[1])
}
validTCP = true
}
if strings.Contains(l, "udp") && expectedUDP != nil {
if port < expectedUDP[0] || port > expectedUDP[1] {
return fmt.Errorf("udp port (%d) not in range expected range %d-%d", port, expectedUDP[0], expectedUDP[1])
}
validUDP = true
}
}
if !validTCP {
return fmt.Errorf("tcp port not found")
}
if !validUDP {
return fmt.Errorf("udp port not found")
}
return nil
}
func stopRemoveContainer(id string, c *testing.T) {
dockerCmd(c, "rm", "-f", id)
}
func (s *DockerSuite) TestUnpublishedPortsInPsOutput(c *testing.T) {
testRequires(c, DaemonIsLinux)
// Run busybox with command line expose (equivalent to EXPOSE in image's Dockerfile) for the following ports
port1 := 80
port2 := 443
expose1 := fmt.Sprintf("--expose=%d", port1)
expose2 := fmt.Sprintf("--expose=%d", port2)
dockerCmd(c, "run", "-d", expose1, expose2, "busybox", "sleep", "5")
// Check docker ps o/p for last created container reports the unpublished ports
unpPort1 := fmt.Sprintf("%d/tcp", port1)
unpPort2 := fmt.Sprintf("%d/tcp", port2)
out, _ := dockerCmd(c, "ps", "-n=1")
// Missing unpublished ports in docker ps output
assert.Assert(c, strings.Contains(out, unpPort1))
// Missing unpublished ports in docker ps output
assert.Assert(c, strings.Contains(out, unpPort2))
// Run the container forcing to publish the exposed ports
dockerCmd(c, "run", "-d", "-P", expose1, expose2, "busybox", "sleep", "5")
// Check docker ps o/p for last created container reports the exposed ports in the port bindings
expBndRegx1 := regexp.MustCompile(`0.0.0.0:\d\d\d\d\d->` + unpPort1)
expBndRegx2 := regexp.MustCompile(`0.0.0.0:\d\d\d\d\d->` + unpPort2)
out, _ = dockerCmd(c, "ps", "-n=1")
// Cannot find expected port binding port (0.0.0.0:xxxxx->unpPort1) in docker ps output
assert.Equal(c, expBndRegx1.MatchString(out), true, fmt.Sprintf("out: %s; unpPort1: %s", out, unpPort1))
// Cannot find expected port binding port (0.0.0.0:xxxxx->unpPort2) in docker ps output
assert.Equal(c, expBndRegx2.MatchString(out), true, fmt.Sprintf("out: %s; unpPort2: %s", out, unpPort2))
// Run the container specifying explicit port bindings for the exposed ports
offset := 10000
pFlag1 := fmt.Sprintf("%d:%d", offset+port1, port1)
pFlag2 := fmt.Sprintf("%d:%d", offset+port2, port2)
out, _ = dockerCmd(c, "run", "-d", "-p", pFlag1, "-p", pFlag2, expose1, expose2, "busybox", "sleep", "5")
id := strings.TrimSpace(out)
// Check docker ps o/p for last created container reports the specified port mappings
expBnd1 := fmt.Sprintf("0.0.0.0:%d->%s", offset+port1, unpPort1)
expBnd2 := fmt.Sprintf("0.0.0.0:%d->%s", offset+port2, unpPort2)
out, _ = dockerCmd(c, "ps", "-n=1")
// Cannot find expected port binding (expBnd1) in docker ps output
assert.Assert(c, strings.Contains(out, expBnd1))
// Cannot find expected port binding (expBnd2) in docker ps output
assert.Assert(c, strings.Contains(out, expBnd2))
// Remove container now otherwise it will interfere with next test
stopRemoveContainer(id, c)
// Run the container with explicit port bindings and no exposed ports
out, _ = dockerCmd(c, "run", "-d", "-p", pFlag1, "-p", pFlag2, "busybox", "sleep", "5")
id = strings.TrimSpace(out)
// Check docker ps o/p for last created container reports the specified port mappings
out, _ = dockerCmd(c, "ps", "-n=1")
// Cannot find expected port binding (expBnd1) in docker ps output
assert.Assert(c, strings.Contains(out, expBnd1))
// Cannot find expected port binding (expBnd2) in docker ps output
assert.Assert(c, strings.Contains(out, expBnd2))
// Remove container now otherwise it will interfere with next test
stopRemoveContainer(id, c)
// Run the container with one unpublished exposed port and one explicit port binding
dockerCmd(c, "run", "-d", expose1, "-p", pFlag2, "busybox", "sleep", "5")
// Check docker ps o/p for last created container reports the specified unpublished port and port mapping
out, _ = dockerCmd(c, "ps", "-n=1")
// Missing unpublished exposed ports (unpPort1) in docker ps output
assert.Assert(c, strings.Contains(out, unpPort1))
// Missing port binding (expBnd2) in docker ps output
assert.Assert(c, strings.Contains(out, expBnd2))
}
func (s *DockerSuite) TestPortHostBinding(c *testing.T) {
testRequires(c, DaemonIsLinux, NotUserNamespace)
out, _ := dockerCmd(c, "run", "-d", "-p", "9876:80", "busybox",
"nc", "-l", "-p", "80")
firstID := strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", firstID, "80")
err := assertPortList(c, out, []string{"0.0.0.0:9876"})
// Port list is not correct
assert.NilError(c, err)
dockerCmd(c, "run", "--net=host", "busybox",
"nc", "localhost", "9876")
dockerCmd(c, "rm", "-f", firstID)
out, _, err = dockerCmdWithError("run", "--net=host", "busybox", "nc", "localhost", "9876")
// Port is still bound after the Container is removed
assert.Assert(c, err != nil, "out: %s", out)
}
func (s *DockerSuite) TestPortExposeHostBinding(c *testing.T) {
testRequires(c, DaemonIsLinux, NotUserNamespace)
out, _ := dockerCmd(c, "run", "-d", "-P", "--expose", "80", "busybox",
"nc", "-l", "-p", "80")
firstID := strings.TrimSpace(out)
out, _ = dockerCmd(c, "port", firstID, "80")
_, exposedPort, err := net.SplitHostPort(out)
assert.Assert(c, err == nil, "out: %s", out)
dockerCmd(c, "run", "--net=host", "busybox",
"nc", "localhost", strings.TrimSpace(exposedPort))
dockerCmd(c, "rm", "-f", firstID)
out, _, err = dockerCmdWithError("run", "--net=host", "busybox",
"nc", "localhost", strings.TrimSpace(exposedPort))
// Port is still bound after the Container is removed
assert.Assert(c, err != nil, "out: %s", out)
}
func (s *DockerSuite) TestPortBindingOnSandbox(c *testing.T) {
testRequires(c, DaemonIsLinux, NotUserNamespace)
dockerCmd(c, "network", "create", "--internal", "-d", "bridge", "internal-net")
nr := getNetworkResource(c, "internal-net")
assert.Equal(c, nr.Internal, true)
dockerCmd(c, "run", "--net", "internal-net", "-d", "--name", "c1",
"-p", "8080:8080", "busybox", "nc", "-l", "-p", "8080")
assert.Assert(c, waitRun("c1") == nil)
_, _, err := dockerCmdWithError("run", "--net=host", "busybox", "nc", "localhost", "8080")
assert.Assert(c, err != nil, "Port mapping on internal network is expected to fail")
// Connect container to another normal bridge network
dockerCmd(c, "network", "create", "-d", "bridge", "foo-net")
dockerCmd(c, "network", "connect", "foo-net", "c1")
_, _, err = dockerCmdWithError("run", "--net=host", "busybox", "nc", "localhost", "8080")
assert.Assert(c, err == nil, "Port mapping on the new network is expected to succeed")
}
|
