mirror of
https://github.com/qdm12/gluetun.git
synced 2026-05-07 04:20:12 +02:00
Quentin McGaw
116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
//go:build linux
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package tcp
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import (
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"context"
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"net/netip"
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"testing"
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"time"
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gomock "github.com/golang/mock/gomock"
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"github.com/qdm12/gluetun/internal/netlink"
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"github.com/qdm12/gluetun/internal/pmtud/constants"
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"github.com/qdm12/gluetun/internal/pmtud/ip"
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"github.com/stretchr/testify/require"
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)
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func Test_runTest(t *testing.T) {
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t.Parallel()
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localNonListenPort := reserveClosedPort(t)
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noopLogger := &noopLogger{}
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netlinker := netlink.New(noopLogger)
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loopbackMTU, err := findLoopbackMTU(netlinker)
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require.NoError(t, err, "finding loopback IPv4 MTU")
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defaultMTU, err := findDefaultRouteMTU(netlinker)
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require.NoError(t, err, "finding default route MTU")
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ctx, cancel := context.WithCancel(t.Context())
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familyToFD, stop, err := startRawSockets([]int{constants.AF_INET, constants.AF_INET6}, excludeMark)
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require.NoError(t, err)
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tracker := newTracker(familyToFD)
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trackerCh := make(chan error)
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go func() {
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trackerCh <- tracker.listen(ctx)
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}()
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// Our local ethernet MTU could be 1500, and the server could advertise
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// an MSS of 1400, but the real link to the server could have an MTU of 1300,
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// so we need to adjust our test so it passes. We are not actually path MTU
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// discovering here, just testing that we can receive the expected TCP packets
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// for a given MTU.
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const mtuSafetyBuffer = 200
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t.Cleanup(func() {
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stop()
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cancel() // stop listening
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err = <-trackerCh
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require.NoError(t, err)
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})
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testCases := map[string]struct {
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timeout time.Duration
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server netip.AddrPort
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mtu uint32
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success bool
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}{
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"local_not_listening": {
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timeout: time.Hour,
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server: netip.AddrPortFrom(netip.AddrFrom4([4]byte{127, 0, 0, 1}), localNonListenPort),
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mtu: loopbackMTU,
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success: true,
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},
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"remote_not_listening": {
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timeout: 50 * time.Millisecond,
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server: netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 12345),
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mtu: defaultMTU - mtuSafetyBuffer,
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},
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"1.1.1.1:443": {
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timeout: 5 * time.Second,
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server: netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 443),
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mtu: defaultMTU - mtuSafetyBuffer,
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success: true,
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},
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"1.1.1.1:80": {
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timeout: 5 * time.Second,
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server: netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 80),
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mtu: defaultMTU - mtuSafetyBuffer,
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success: true,
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},
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"8.8.8.8:443": {
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timeout: 5 * time.Second,
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server: netip.AddrPortFrom(netip.AddrFrom4([4]byte{8, 8, 8, 8}), 443),
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mtu: defaultMTU - mtuSafetyBuffer,
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success: true,
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},
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}
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for name, testCase := range testCases {
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t.Run(name, func(t *testing.T) {
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t.Parallel()
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ctrl := gomock.NewController(t)
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dst := testCase.server
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fd := familyToFD[ip.GetFamily(dst)]
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fw := getFirewall(t)
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logger := NewMockLogger(ctrl)
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ctx, cancel := context.WithTimeout(t.Context(), testCase.timeout)
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defer cancel()
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err := runTest(ctx, dst, testCase.mtu, excludeMark,
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fd, tracker, fw, logger)
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if testCase.success {
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require.NoError(t, err)
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} else {
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require.Error(t, err)
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}
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})
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}
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}
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