Add new admin panel, failover, dns fallback, providers, limiters. Update XHTTP

This commit is contained in:
Sergei Maklagin
2026-05-11 00:59:35 +03:00
parent 652e0baf57
commit 3bd162ed6f
241 changed files with 36409 additions and 4086 deletions

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@@ -29,7 +29,7 @@ type RawHalfConn struct {
func NewRawHalfConn(rawHalfConn reflect.Value, methods *Methods) (*RawHalfConn, error) {
halfConn := &RawHalfConn{
pointer: (unsafe.Pointer)(rawHalfConn.UnsafeAddr()),
pointer: unsafe.Pointer(rawHalfConn.UnsafeAddr()),
methods: methods,
}

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@@ -0,0 +1,74 @@
package byteformats
import (
"fmt"
"math"
)
var (
unitNames = []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"}
iUnitNames = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"}
kUnitNames = []string{"kB", "MB", "GB", "TB", "PB", "EB"}
kiUnitNames = []string{"KiB", "MiB", "GiB", "TiB", "PiB", "EiB"}
)
func formatBytes(s uint64, base float64, sizes []string) string {
if s < 10 {
return fmt.Sprintf("%d B", s)
}
e := math.Floor(logn(float64(s), base))
suffix := sizes[int(e)]
val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10
f := "%.0f %s"
if val < 10 {
f = "%.1f %s"
}
return fmt.Sprintf(f, val, suffix)
}
func formatKBytes(s uint64, base float64, sizes []string) string {
if s == 0 {
return fmt.Sprintf("0 %s", sizes[0])
}
e := math.Floor(logn(float64(s), base))
if e < 1 {
e = 1
}
suffix := sizes[int(e)-1]
val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10
f := "%.0f %s"
if val < 10 {
f = "%.1f %s"
}
return fmt.Sprintf(f, val, suffix)
}
func logn(n, b float64) float64 {
return math.Log(n) / math.Log(b)
}
func FormatBytes(s uint64) string {
return formatBytes(s, 1000, unitNames)
}
func FormatMemoryBytes(s uint64) string {
return formatBytes(s, 1024, unitNames)
}
func FormatIBytes(s uint64) string {
return formatBytes(s, 1024, iUnitNames)
}
func FormatKBytes(s uint64) string {
return formatKBytes(s, 1000, kUnitNames)
}
func FormatMemoryKBytes(s uint64) string {
return formatKBytes(s, 1024, kUnitNames)
}
func FormatKIBytes(s uint64) string {
return formatKBytes(s, 1024, kiUnitNames)
}

218
common/byteformats/json.go Normal file
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@@ -0,0 +1,218 @@
package byteformats
import (
"encoding/json"
"fmt"
"strconv"
"strings"
)
const (
Byte = 1 << (iota * 10)
KiByte
MiByte
GiByte
TiByte
PiByte
EiByte
)
const (
KByte = Byte * 1000
MByte = KByte * 1000
GByte = MByte * 1000
TByte = GByte * 1000
PByte = TByte * 1000
EByte = PByte * 1000
)
var unitValueTable = map[string]uint64{
"b": Byte,
"k": KByte,
"kb": KByte,
"ki": KiByte,
"kib": KiByte,
"m": MByte,
"mb": MByte,
"mi": MiByte,
"mib": MiByte,
"g": GByte,
"gb": GByte,
"gi": GiByte,
"gib": GiByte,
"t": TByte,
"tb": TByte,
"ti": TiByte,
"tib": TiByte,
"p": PByte,
"pb": PByte,
"pi": PiByte,
"pib": PiByte,
"e": EByte,
"eb": EByte,
"ei": EiByte,
"eib": EiByte,
}
var memoryUnitValueTable = map[string]uint64{
"b": Byte,
"k": KiByte,
"kb": KiByte,
"m": MiByte,
"mb": MiByte,
"g": GiByte,
"gb": GiByte,
"t": TiByte,
"tb": TiByte,
"p": PiByte,
"pb": PiByte,
"e": EiByte,
"eb": EiByte,
}
var networkUnitValueTable = map[string]uint64{
"Bps": Byte,
"Kbps": KByte / 8,
"KBps": KByte,
"Mbps": MByte / 8,
"MBps": MByte,
"Gbps": GByte / 8,
"GBps": GByte,
"Tbps": TByte / 8,
"TBps": TByte,
"Pbps": PByte / 8,
"PBps": PByte,
"Ebps": EByte / 8,
"EBps": EByte,
}
type rawBytes struct {
value uint64
unit string
unitValue uint64
}
func (b rawBytes) MarshalJSON() ([]byte, error) {
if b.unit == "" {
return json.Marshal(b.value)
}
return json.Marshal(strconv.FormatUint(b.value/b.unitValue, 10) + b.unit)
}
func parseUnit(b *rawBytes, unitTable map[string]uint64, caseSensitive bool, bytes []byte) error {
var intValue int64
err := json.Unmarshal(bytes, &intValue)
if err == nil {
b.value = uint64(intValue)
b.unit = ""
b.unitValue = 1
return nil
}
var stringValue string
err = json.Unmarshal(bytes, &stringValue)
if err != nil {
return err
}
if strings.TrimSpace(stringValue) == "" {
b.value = 0
b.unit = ""
b.unitValue = 1
return nil
}
unitIndex := 0
for i, c := range stringValue {
if c < '0' || c > '9' {
unitIndex = i
break
}
}
if unitIndex == 0 {
return fmt.Errorf("invalid format: %s", stringValue)
}
value, err := strconv.ParseUint(stringValue[:unitIndex], 10, 64)
if err != nil {
return fmt.Errorf("parse %s: %w", stringValue[:unitIndex], err)
}
rawUnit := stringValue[unitIndex:]
var unit string
if caseSensitive {
unit = strings.TrimSpace(rawUnit)
} else {
unit = strings.TrimSpace(strings.ToLower(rawUnit))
}
unitValue, loaded := unitTable[unit]
if !loaded {
return fmt.Errorf("unsupported unit: %s", rawUnit)
}
b.value = value * unitValue
b.unit = rawUnit
b.unitValue = unitValue
return nil
}
type Bytes struct {
rawBytes
}
func (b *Bytes) Value() uint64 {
if b == nil {
return 0
}
return b.value
}
func (b *Bytes) UnmarshalJSON(bytes []byte) error {
return parseUnit(&b.rawBytes, unitValueTable, false, bytes)
}
type MemoryBytes struct {
rawBytes
}
func (m *MemoryBytes) Value() uint64 {
if m == nil {
return 0
}
return m.value
}
func (m *MemoryBytes) UnmarshalJSON(bytes []byte) error {
return parseUnit(&m.rawBytes, memoryUnitValueTable, false, bytes)
}
type NetworkBytes struct {
rawBytes
}
func (n *NetworkBytes) Value() uint64 {
if n == nil {
return 0
}
return n.value
}
func (n *NetworkBytes) UnmarshalJSON(bytes []byte) error {
return parseUnit(&n.rawBytes, networkUnitValueTable, true, bytes)
}
type NetworkBytesCompat struct {
rawBytes
}
func (n *NetworkBytesCompat) Value() uint64 {
if n == nil {
return 0
}
return n.value
}
func (n *NetworkBytesCompat) UnmarshalJSON(bytes []byte) error {
err := parseUnit(&n.rawBytes, networkUnitValueTable, true, bytes)
if err != nil {
newErr := parseUnit(&n.rawBytes, unitValueTable, false, bytes)
if newErr == nil {
return nil
}
}
return err
}

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@@ -0,0 +1,114 @@
package byteformats_test
import (
"encoding/json"
"testing"
"github.com/sagernet/sing-box/common/byteformats"
"github.com/stretchr/testify/require"
)
func TestNetworkBytes(t *testing.T) {
t.Parallel()
testMap := map[string]uint64{
"1 Bps": byteformats.Byte,
"1 Kbps": byteformats.KByte / 8,
"1 KBps": byteformats.KByte,
"1 Mbps": byteformats.MByte / 8,
"1 MBps": byteformats.MByte,
"1 Gbps": byteformats.GByte / 8,
"1 GBps": byteformats.GByte,
"1 Tbps": byteformats.TByte / 8,
"1 TBps": byteformats.TByte,
"1 Pbps": byteformats.PByte / 8,
"1 PBps": byteformats.PByte,
"1k": byteformats.KByte,
"1m": byteformats.MByte,
}
for k, v := range testMap {
var nb byteformats.NetworkBytesCompat
require.NoError(t, json.Unmarshal([]byte("\""+k+"\""), &nb))
require.Equal(t, v, nb.Value())
b, err := json.Marshal(nb)
require.NoError(t, err)
require.Equal(t, "\""+k+"\"", string(b))
}
}
func TestMemoryBytes(t *testing.T) {
t.Parallel()
testMap := map[string]uint64{
"1 B": byteformats.Byte,
"1 KB": byteformats.KiByte,
"1 MB": byteformats.MiByte,
"1 GB": byteformats.GiByte,
"1 TB": byteformats.TiByte,
"1 PB": byteformats.PiByte,
}
for k, v := range testMap {
var mb byteformats.MemoryBytes
require.NoError(t, json.Unmarshal([]byte("\""+k+"\""), &mb))
require.Equal(t, v, mb.Value())
b, err := json.Marshal(mb)
require.NoError(t, err)
require.Equal(t, "\""+k+"\"", string(b))
}
}
func TestDefaultBytes(t *testing.T) {
t.Parallel()
testMap := map[string]uint64{
"1 B": byteformats.Byte,
"1 KB": byteformats.KByte,
"1 KiB": byteformats.KiByte,
"1 MB": byteformats.MByte,
"1 MiB": byteformats.MiByte,
"1 GB": byteformats.GByte,
"1 GiB": byteformats.GiByte,
"1 TB": byteformats.TByte,
"1 TiB": byteformats.TiByte,
"1 PB": byteformats.PByte,
"1 PiB": byteformats.PiByte,
"1 EB": byteformats.EByte,
"1 EiB": byteformats.EiByte,
"1k": byteformats.KByte,
"1m": byteformats.MByte,
"1g": byteformats.GByte,
"1t": byteformats.TByte,
"1p": byteformats.PByte,
"1e": byteformats.EByte,
"1K": byteformats.KByte,
"1M": byteformats.MByte,
"1G": byteformats.GByte,
"1T": byteformats.TByte,
"1P": byteformats.PByte,
"1E": byteformats.EByte,
"1Ki": byteformats.KiByte,
"1Mi": byteformats.MiByte,
"1Gi": byteformats.GiByte,
"1Ti": byteformats.TiByte,
"1Pi": byteformats.PiByte,
"1Ei": byteformats.EiByte,
"1KiB": byteformats.KiByte,
"1MiB": byteformats.MiByte,
"1GiB": byteformats.GiByte,
"1TiB": byteformats.TiByte,
"1PiB": byteformats.PiByte,
"1EiB": byteformats.EiByte,
"1kB": byteformats.KByte,
"1mB": byteformats.MByte,
"1gB": byteformats.GByte,
"1tB": byteformats.TByte,
"1pB": byteformats.PByte,
"1eB": byteformats.EByte,
}
for k, v := range testMap {
var mb byteformats.Bytes
require.NoError(t, json.Unmarshal([]byte("\""+k+"\""), &mb))
require.Equal(t, v, mb.Value())
b, err := json.Marshal(mb)
require.NoError(t, err)
require.Equal(t, "\""+k+"\"", string(b))
}
}

View File

@@ -261,7 +261,8 @@ func getExecPathFromPID(pid uint32) (string, error) {
procpidpathinfo,
0,
uintptr(unsafe.Pointer(&buf[0])),
procpidpathinfosize)
procpidpathinfosize,
)
if errno != 0 {
return "", errno
}

View File

@@ -2,12 +2,14 @@ package common
import (
"encoding/base64"
"encoding/json"
"reflect"
"regexp"
"strconv"
"strings"
"time"
Xbadoption "github.com/sagernet/sing-box/common/xray/json/badoption"
"github.com/sagernet/sing/common/json/badoption"
)
@@ -66,3 +68,12 @@ func DecodeBase64URLSafe(content string) (string, error) {
}
return string(result), nil
}
func ParseXHTTPRange(value string) (Xbadoption.Range, error) {
result := Xbadoption.Range{}
encoded, err := json.Marshal(value)
if err != nil {
return result, err
}
return result, result.UnmarshalJSON(encoded)
}

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@@ -38,8 +38,8 @@ func MergeMulti(dest MultiBuffer, src MultiBuffer) (MultiBuffer, MultiBuffer) {
// MergeBytes merges the given bytes into MultiBuffer and return the new address of the merged MultiBuffer.
func MergeBytes(dest MultiBuffer, src []byte) MultiBuffer {
n := len(dest)
if n > 0 && !(dest)[n-1].IsFull() {
nBytes, _ := (dest)[n-1].Write(src)
if n > 0 && !dest[n-1].IsFull() {
nBytes, _ := dest[n-1].Write(src)
src = src[nBytes:]
}

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@@ -42,7 +42,7 @@ func New(opts ...Option) (*Reader, *Writer) {
}
for _, opt := range opts {
opt(&(p.option))
opt(&p.option)
}
return &Reader{

View File

@@ -1,28 +1,256 @@
package utils
import (
"hash/fnv"
"math"
"math/rand"
"net/http"
"strconv"
"strings"
"time"
"github.com/klauspost/cpuid/v2"
)
func ChromeVersion() int {
// Use only CPU info as seed for PRNG
seed := int64(cpuid.CPU.Family + cpuid.CPU.Model + cpuid.CPU.PhysicalCores + cpuid.CPU.LogicalCores + cpuid.CPU.CacheLine)
rng := rand.New(rand.NewSource(seed))
// Start from Chrome 144 released on 2026.1.13
releaseDate := time.Date(2026, 1, 13, 0, 0, 0, 0, time.UTC)
version := 144
now := time.Now()
// Each version has random 25-45 day interval
for releaseDate.Before(now) {
releaseDate = releaseDate.AddDate(0, 0, rng.Intn(21)+25)
version++
}
return version - 1
func GetRandomizer() *rand.Rand {
// Seed the PRNG with the hash of CPU info, increasing the overall probable space.
fnvHash := fnv.New64()
fnvHash.Write([]byte(strconv.Itoa(cpuid.CPU.Family) + strconv.Itoa(cpuid.CPU.Model) + strconv.Itoa(cpuid.CPU.PhysicalCores) + strconv.Itoa(cpuid.CPU.LogicalCores) + strconv.Itoa(cpuid.CPU.CacheLine) + strconv.Itoa(cpuid.CPU.ThreadsPerCore)))
return rand.New(rand.NewSource(int64(fnvHash.Sum64())))
}
// ChromeUA provides default browser User-Agent based on CPU-seeded PRNG.
var ChromeUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/" + strconv.Itoa(ChromeVersion()) + ".0.0.0 Safari/537.36"
var globalRng *rand.Rand = GetRandomizer()
// The Chrome version generator will suffer from deviation of a normal distribution.
func ChromeVersion() int {
// Start from Chrome 144, released on 2026.1.13.
var startVersion int = 144
var timeStart int64 = time.Date(2026, 1, 13, 0, 0, 0, 0, time.UTC).Unix() / 86400
var timeCurrent int64 = time.Now().Unix() / 86400
var timeDiff int = int((timeCurrent - timeStart - 35)) - int(math.Floor(math.Pow(globalRng.Float64(), 2)*105))
return startVersion + (timeDiff / 35) // It's 31.15 currently.
}
var safariMinorMap [25]int = [25]int{0, 0, 0, 1, 1,
1, 2, 2, 2, 2, 3, 3, 3, 4, 4,
4, 5, 5, 5, 5, 5, 6, 6, 6, 6}
// The following version generators use deterministic generators, but with the distribution scaled by a curve.
func CurlVersion() string {
// curl 8.0.0 was released on 20/03/2023.
var timeCurrent int64 = time.Now().Unix() / 86400
var timeStart int64 = time.Date(2023, 3, 20, 0, 0, 0, 0, time.UTC).Unix() / 86400
var timeDiff int = int((timeCurrent - timeStart - 60)) - int(math.Floor(math.Pow(globalRng.Float64(), 2)*165))
var minorValue int = int(timeDiff / 57) // The release cadence is actually 56.67 days.
return "8." + strconv.Itoa(minorValue) + ".0"
}
func FirefoxVersion() int {
// Firefox 128 ESR was released on 09/07/2023.
var timeCurrent int64 = time.Now().Unix() / 86400
var timeStart int64 = time.Date(2024, 7, 29, 0, 0, 0, 0, time.UTC).Unix() / 86400
var timeDiff = timeCurrent - timeStart - 25 - int64(math.Floor(math.Pow(globalRng.Float64(), 2)*50))
return int(timeDiff/30) + 128
}
func SafariVersion() string {
var anchoredTime time.Time = time.Now()
var releaseYear int = anchoredTime.Year()
var splitPoint time.Time = time.Date(releaseYear, 9, 23, 0, 0, 0, 0, time.UTC)
var delayedDays = int(math.Floor(math.Pow(globalRng.Float64(), 3) * 75))
splitPoint = splitPoint.AddDate(0, 0, delayedDays)
if anchoredTime.Compare(splitPoint) < 0 {
releaseYear--
splitPoint = time.Date(releaseYear, 9, 23, 0, 0, 0, 0, time.UTC)
splitPoint = splitPoint.AddDate(0, 0, delayedDays)
}
var minorVersion = safariMinorMap[(anchoredTime.Unix()-splitPoint.Unix())/1296000]
return strconv.Itoa(releaseYear-1999) + "." + strconv.Itoa(minorVersion)
}
// The full Chromium brand GREASE implementation
var clientHintGreaseNA = []string{" ", "(", ":", "-", ".", "/", ")", ";", "=", "?", "_"}
var clientHintVersionNA = []string{"8", "99", "24"}
var clientHintShuffle3 = [][3]int{{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 0, 1}, {2, 1, 0}}
var clientHintShuffle4 = [][4]int{
{0, 1, 2, 3}, {0, 1, 3, 2}, {0, 2, 1, 3}, {0, 2, 3, 1}, {0, 3, 1, 2}, {0, 3, 2, 1},
{1, 0, 2, 3}, {1, 0, 3, 2}, {1, 2, 0, 3}, {1, 2, 3, 0}, {1, 3, 0, 2}, {1, 3, 2, 0},
{2, 0, 1, 3}, {2, 0, 3, 1}, {2, 1, 0, 3}, {2, 1, 3, 0}, {2, 3, 0, 1}, {2, 3, 1, 0},
{3, 0, 1, 2}, {3, 0, 2, 1}, {3, 1, 0, 2}, {3, 1, 2, 0}, {3, 2, 0, 1}, {3, 2, 1, 0}}
func getGreasedChInvalidBrand(seed int) string {
return "\"Not" + clientHintGreaseNA[seed%len(clientHintGreaseNA)] + "A" + clientHintGreaseNA[(seed+1)%len(clientHintGreaseNA)] + "Brand\";v=\"" + clientHintVersionNA[seed%len(clientHintVersionNA)] + "\""
}
func getGreasedChOrder(brandLength int, seed int) []int {
switch brandLength {
case 1:
return []int{0}
case 2:
return []int{seed % brandLength, (seed + 1) % brandLength}
case 3:
return clientHintShuffle3[seed%len(clientHintShuffle3)][:]
default:
return clientHintShuffle4[seed%len(clientHintShuffle4)][:]
}
//return []int{}
}
func getUngreasedChUa(majorVersion int, forkName string) []string {
// Set the capacity to 4, the maximum allowed brand size, so Go will never allocate memory twice
baseChUa := make([]string, 0, 4)
baseChUa = append(baseChUa, getGreasedChInvalidBrand(majorVersion),
"\"Chromium\";v=\""+strconv.Itoa(majorVersion)+"\"")
switch forkName {
case "chrome":
baseChUa = append(baseChUa, "\"Google Chrome\";v=\""+strconv.Itoa(majorVersion)+"\"")
case "edge":
baseChUa = append(baseChUa, "\"Microsoft Edge\";v=\""+strconv.Itoa(majorVersion)+"\"")
}
return baseChUa
}
func getGreasedChUa(majorVersion int, forkName string) string {
ungreasedCh := getUngreasedChUa(majorVersion, forkName)
shuffleMap := getGreasedChOrder(len(ungreasedCh), majorVersion)
shuffledCh := make([]string, len(ungreasedCh))
for i, e := range shuffleMap {
shuffledCh[e] = ungreasedCh[i]
}
return strings.Join(shuffledCh, ", ")
}
// The code below provides a coherent default browser user agent string based on a CPU-seeded PRNG.
var CurlUA = "curl/" + CurlVersion()
var AnchoredFirefoxVersion = strconv.Itoa(FirefoxVersion())
var FirefoxUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:" + AnchoredFirefoxVersion + ".0) Gecko/20100101 Firefox/" + AnchoredFirefoxVersion + ".0"
var SafariUA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/" + SafariVersion() + " Safari/605.1.15"
// Chromium browsers.
var AnchoredChromeVersion = ChromeVersion()
var ChromeUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0 Safari/537.36"
var ChromeUACH = getGreasedChUa(AnchoredChromeVersion, "chrome")
var MSEdgeUA = ChromeUA + "Edg/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0"
var MSEdgeUACH = getGreasedChUa(AnchoredChromeVersion, "edge")
func applyMasqueradedHeaders(header http.Header, browser string, variant string) {
// Browser-specific.
switch browser {
case "chrome":
header["Sec-CH-UA"] = []string{ChromeUACH}
header["Sec-CH-UA-Mobile"] = []string{"?0"}
header["Sec-CH-UA-Platform"] = []string{"\"Windows\""}
header["DNT"] = []string{"1"}
header.Set("User-Agent", ChromeUA)
header.Set("Accept-Language", "en-US,en;q=0.9")
case "edge":
header["Sec-CH-UA"] = []string{MSEdgeUACH}
header["Sec-CH-UA-Mobile"] = []string{"?0"}
header["Sec-CH-UA-Platform"] = []string{"\"Windows\""}
header["DNT"] = []string{"1"}
header.Set("User-Agent", MSEdgeUA)
header.Set("Accept-Language", "en-US,en;q=0.9")
case "firefox":
header.Set("User-Agent", FirefoxUA)
header["DNT"] = []string{"1"}
header.Set("Accept-Language", "en-US,en;q=0.5")
case "safari":
header.Set("User-Agent", SafariUA)
header.Set("Accept-Language", "en-US,en;q=0.9")
case "golang":
// Expose the default net/http header.
header.Del("User-Agent")
return
case "curl":
header.Set("User-Agent", CurlUA)
return
}
// Context-specific.
switch variant {
case "nav":
if header.Get("Cache-Control") == "" {
switch browser {
case "chrome", "edge":
header.Set("Cache-Control", "max-age=0")
}
}
header.Set("Upgrade-Insecure-Requests", "1")
if header.Get("Accept") == "" {
switch browser {
case "chrome", "edge":
header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/jxl,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7")
case "firefox", "safari":
header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
}
}
header.Set("Sec-Fetch-Site", "none")
header.Set("Sec-Fetch-Mode", "navigate")
switch browser {
case "safari":
default:
header.Set("Sec-Fetch-User", "?1")
}
header.Set("Sec-Fetch-Dest", "document")
header.Set("Priority", "u=0, i")
case "ws":
header.Set("Sec-Fetch-Mode", "websocket")
switch browser {
case "safari":
// Safari is NOT web-compliant here!
header.Set("Sec-Fetch-Dest", "websocket")
default:
header.Set("Sec-Fetch-Dest", "empty")
}
header.Set("Sec-Fetch-Site", "same-origin")
if header.Get("Cache-Control") == "" {
header.Set("Cache-Control", "no-cache")
}
if header.Get("Pragma") == "" {
header.Set("Pragma", "no-cache")
}
if header.Get("Accept") == "" {
header.Set("Accept", "*/*")
}
case "fetch":
header.Set("Sec-Fetch-Mode", "cors")
header.Set("Sec-Fetch-Dest", "empty")
header.Set("Sec-Fetch-Site", "same-origin")
if header.Get("Priority") == "" {
switch browser {
case "chrome", "edge":
header.Set("Priority", "u=1, i")
case "firefox":
header.Set("Priority", "u=4")
case "safari":
header.Set("Priority", "u=3, i")
}
}
if header.Get("Cache-Control") == "" {
header.Set("Cache-Control", "no-cache")
}
if header.Get("Pragma") == "" {
header.Set("Pragma", "no-cache")
}
if header.Get("Accept") == "" {
header.Set("Accept", "*/*")
}
}
}
func TryDefaultHeadersWith(header http.Header, variant string) {
// The global UA special value handler for transports. Used to be called HandleTransportUASettings.
// Just a FYI to whoever needing to fix this piece of code after some spontaneous event, I tried to make the two methods separate to let the code be cleaner and more organized.
if len(header.Values("User-Agent")) < 1 {
applyMasqueradedHeaders(header, "chrome", variant)
} else {
switch header.Get("User-Agent") {
case "chrome":
applyMasqueradedHeaders(header, "chrome", variant)
case "firefox":
applyMasqueradedHeaders(header, "firefox", variant)
case "safari":
applyMasqueradedHeaders(header, "safari", variant)
case "edge":
applyMasqueradedHeaders(header, "edge", variant)
case "curl":
applyMasqueradedHeaders(header, "curl", variant)
case "golang":
applyMasqueradedHeaders(header, "golang", variant)
}
}
}