Xray-core/testing/scenarios/common.go

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package scenarios
import (
"bytes"
"crypto/rand"
"fmt"
"io"
"os"
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"os/exec"
"path/filepath"
"runtime"
"sync"
"syscall"
"time"
"github.com/golang/protobuf/proto"
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"github.com/xtls/xray-core/app/dispatcher"
"github.com/xtls/xray-core/app/proxyman"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/errors"
"github.com/xtls/xray-core/common/log"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/retry"
"github.com/xtls/xray-core/common/serial"
"github.com/xtls/xray-core/common/units"
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core "github.com/xtls/xray-core/core"
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)
func xor(b []byte) []byte {
r := make([]byte, len(b))
for i, v := range b {
r[i] = v ^ 'c'
}
return r
}
func readFrom(conn net.Conn, timeout time.Duration, length int) []byte {
b := make([]byte, length)
deadline := time.Now().Add(timeout)
conn.SetReadDeadline(deadline)
n, err := io.ReadFull(conn, b[:length])
if err != nil {
fmt.Println("Unexpected error from readFrom:", err)
}
return b[:n]
}
func readFrom2(conn net.Conn, timeout time.Duration, length int) ([]byte, error) {
b := make([]byte, length)
deadline := time.Now().Add(timeout)
conn.SetReadDeadline(deadline)
n, err := io.ReadFull(conn, b[:length])
if err != nil {
return nil, err
}
return b[:n], nil
}
func InitializeServerConfigs(configs ...*core.Config) ([]*exec.Cmd, error) {
servers := make([]*exec.Cmd, 0, 10)
for _, config := range configs {
server, err := InitializeServerConfig(config)
if err != nil {
CloseAllServers(servers)
return nil, err
}
servers = append(servers, server)
}
time.Sleep(time.Second * 2)
return servers, nil
}
func InitializeServerConfig(config *core.Config) (*exec.Cmd, error) {
err := BuildXray()
if err != nil {
return nil, err
}
config = withDefaultApps(config)
configBytes, err := proto.Marshal(config)
if err != nil {
return nil, err
}
proc := RunXrayProtobuf(configBytes)
if err := proc.Start(); err != nil {
return nil, err
}
return proc, nil
}
var (
testBinaryPath string
testBinaryPathGen sync.Once
)
func genTestBinaryPath() {
testBinaryPathGen.Do(func() {
var tempDir string
common.Must(retry.Timed(5, 100).On(func() error {
dir, err := os.MkdirTemp("", "xray")
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if err != nil {
return err
}
tempDir = dir
return nil
}))
file := filepath.Join(tempDir, "xray.test")
if runtime.GOOS == "windows" {
file += ".exe"
}
testBinaryPath = file
fmt.Printf("Generated binary path: %s\n", file)
})
}
func GetSourcePath() string {
return filepath.Join("github.com", "xtls", "xray-core", "main")
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}
func CloseAllServers(servers []*exec.Cmd) {
log.Record(&log.GeneralMessage{
Severity: log.Severity_Info,
Content: "Closing all servers.",
})
for _, server := range servers {
if runtime.GOOS == "windows" {
server.Process.Kill()
} else {
server.Process.Signal(syscall.SIGTERM)
}
}
for _, server := range servers {
server.Process.Wait()
}
log.Record(&log.GeneralMessage{
Severity: log.Severity_Info,
Content: "All server closed.",
})
}
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func CloseServer(server *exec.Cmd) {
log.Record(&log.GeneralMessage{
Severity: log.Severity_Info,
Content: "Closing server.",
})
if runtime.GOOS == "windows" {
server.Process.Kill()
} else {
server.Process.Signal(syscall.SIGTERM)
}
server.Process.Wait()
log.Record(&log.GeneralMessage{
Severity: log.Severity_Info,
Content: "Server closed.",
})
}
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func withDefaultApps(config *core.Config) *core.Config {
config.App = append(config.App, serial.ToTypedMessage(&dispatcher.Config{}))
config.App = append(config.App, serial.ToTypedMessage(&proxyman.InboundConfig{}))
config.App = append(config.App, serial.ToTypedMessage(&proxyman.OutboundConfig{}))
return config
}
func testTCPConn(port net.Port, payloadSize int, timeout time.Duration) func() error {
return func() error {
conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
IP: []byte{127, 0, 0, 1},
Port: int(port),
})
if err != nil {
return err
}
defer conn.Close()
return testTCPConn2(conn, payloadSize, timeout)()
}
}
func testUDPConn(port net.Port, payloadSize int, timeout time.Duration) func() error {
return func() error {
conn, err := net.DialUDP("udp", nil, &net.UDPAddr{
IP: []byte{127, 0, 0, 1},
Port: int(port),
})
if err != nil {
return err
}
defer conn.Close()
return testTCPConn2(conn, payloadSize, timeout)()
}
}
func testTCPConn2(conn net.Conn, payloadSize int, timeout time.Duration) func() error {
return func() (err1 error) {
start := time.Now()
defer func() {
var m runtime.MemStats
runtime.ReadMemStats(&m)
// For info on each, see: https://golang.org/pkg/runtime/#MemStats
fmt.Println("testConn finishes:", time.Since(start).Milliseconds(), "ms\t",
err1, "\tAlloc =", units.ByteSize(m.Alloc).String(),
"\tTotalAlloc =", units.ByteSize(m.TotalAlloc).String(),
"\tSys =", units.ByteSize(m.Sys).String(),
"\tNumGC =", m.NumGC)
}()
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payload := make([]byte, payloadSize)
common.Must2(rand.Read(payload))
nBytes, err := conn.Write(payload)
if err != nil {
return err
}
if nBytes != len(payload) {
return errors.New("expect ", len(payload), " written, but actually ", nBytes)
}
response, err := readFrom2(conn, timeout, payloadSize)
if err != nil {
return err
}
_ = response
if r := bytes.Compare(response, xor(payload)); r != 0 {
return errors.New(r)
}
return nil
}
}