Files
coder/tailnet/test/integration/suite.go
T
Spike Curtis bddb808b25 chore: arrange imports in a standard way (#21452)
Fixes all our Go file imports to match the preferred spec that we've _mostly_ been using. For example:

```
import (
	"context"
	"time"

	"github.com/prometheus/client_golang/prometheus"
	"golang.org/x/xerrors"
	"gopkg.in/natefinch/lumberjack.v2"

	"cdr.dev/slog/v3"
	"github.com/coder/coder/v2/codersdk/agentsdk"
	"github.com/coder/serpent"
)
```

3 groups: standard library, 3rd partly libs, Coder libs.

This PR makes the change across the codebase. The PR in the stack above modifies our formatting to maintain this state of affairs, and is a separate PR so it's possible to review that one in detail.
2026-01-08 15:24:11 +04:00

121 lines
3.7 KiB
Go

//go:build linux
// +build linux
package integration
import (
"net/http"
"net/netip"
"net/url"
"testing"
"time"
"github.com/stretchr/testify/require"
"cdr.dev/slog/v3"
"github.com/coder/coder/v2/tailnet"
"github.com/coder/coder/v2/testutil"
)
// nolint:revive
func sendRestart(t *testing.T, serverURL *url.URL, derp bool, coordinator bool) {
t.Helper()
ctx := testutil.Context(t, 2*time.Second)
serverURL, err := url.Parse(serverURL.String() + "/restart")
q := serverURL.Query()
if derp {
q.Set("derp", "true")
}
if coordinator {
q.Set("coordinator", "true")
}
serverURL.RawQuery = q.Encode()
require.NoError(t, err)
req, err := http.NewRequestWithContext(ctx, http.MethodPost, serverURL.String(), nil)
require.NoError(t, err)
resp, err := http.DefaultClient.Do(req)
require.NoError(t, err)
defer resp.Body.Close()
require.Equal(t, http.StatusOK, resp.StatusCode, "unexpected status code %d", resp.StatusCode)
}
// TODO: instead of reusing one conn for each suite, maybe we should make a new
// one for each subtest?
func TestSuite(t *testing.T, _ slog.Logger, serverURL *url.URL, conn *tailnet.Conn, _, peer Client) {
t.Parallel()
t.Run("Connectivity", func(t *testing.T) {
t.Parallel()
peerIP := tailnet.TailscaleServicePrefix.AddrFromUUID(peer.ID)
_, _, _, err := conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer")
})
t.Run("RestartDERP", func(t *testing.T) {
peerIP := tailnet.TailscaleServicePrefix.AddrFromUUID(peer.ID)
_, _, _, err := conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer")
sendRestart(t, serverURL, true, false)
_, _, _, err = conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer after derp restart")
})
t.Run("RestartCoordinator", func(t *testing.T) {
peerIP := tailnet.TailscaleServicePrefix.AddrFromUUID(peer.ID)
_, _, _, err := conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer")
sendRestart(t, serverURL, false, true)
_, _, _, err = conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer after coordinator restart")
})
t.Run("RestartBoth", func(t *testing.T) {
peerIP := tailnet.TailscaleServicePrefix.AddrFromUUID(peer.ID)
_, _, _, err := conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer")
sendRestart(t, serverURL, true, true)
_, _, _, err = conn.Ping(testutil.Context(t, testutil.WaitLong), peerIP)
require.NoError(t, err, "ping peer after restart")
})
}
func TestBigUDP(t *testing.T, logger slog.Logger, _ *url.URL, conn *tailnet.Conn, _, peer Client) {
t.Run("UDPEcho", func(t *testing.T) {
ctx := testutil.Context(t, testutil.WaitShort)
peerIP := tailnet.TailscaleServicePrefix.AddrFromUUID(peer.ID)
udpConn, err := conn.DialContextUDP(ctx, netip.AddrPortFrom(peerIP, uint16(EchoPort)))
require.NoError(t, err)
defer udpConn.Close()
// 1280 max tunnel packet size
// -40
// -8 UDP header
// ----------------------------
// 1232 data size
logger.Info(ctx, "sending UDP test packet")
packet := make([]byte, 1232)
for i := range packet {
packet[i] = byte(i % 256)
}
err = udpConn.SetWriteDeadline(time.Now().Add(5 * time.Second))
require.NoError(t, err)
n, err := udpConn.Write(packet)
require.NoError(t, err)
require.Equal(t, len(packet), n)
// read the echo
logger.Info(ctx, "attempting to read UDP reply")
buf := make([]byte, 1280)
err = udpConn.SetReadDeadline(time.Now().Add(5 * time.Second))
require.NoError(t, err)
n, err = udpConn.Read(buf)
require.NoError(t, err)
require.Equal(t, len(packet), n)
require.Equal(t, packet, buf[:n])
})
}