Xray-core/transport/internet/splithttp/config.go

167 lines
3.3 KiB
Go
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package splithttp
import (
"crypto/rand"
"math/big"
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"net/http"
"strings"
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"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/transport/internet"
)
func (c *Config) GetNormalizedPath() string {
pathAndQuery := strings.SplitN(c.Path, "?", 2)
path := pathAndQuery[0]
if path == "" || path[0] != '/' {
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path = "/" + path
}
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if path[len(path)-1] != '/' {
path = path + "/"
}
return path
}
func (c *Config) GetNormalizedQuery() string {
pathAndQuery := strings.SplitN(c.Path, "?", 2)
query := ""
if len(pathAndQuery) > 1 {
query = pathAndQuery[1]
}
if query != "" {
query += "&"
}
paddingLen := c.GetNormalizedXPaddingBytes().roll()
if paddingLen > 0 {
query += "x_padding=" + strings.Repeat("0", int(paddingLen))
}
return query
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}
func (c *Config) GetRequestHeader() http.Header {
header := http.Header{}
for k, v := range c.Header {
header.Add(k, v)
}
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return header
}
func (c *Config) WriteResponseHeader(writer http.ResponseWriter) {
// CORS headers for the browser dialer
writer.Header().Set("Access-Control-Allow-Origin", "*")
writer.Header().Set("Access-Control-Allow-Methods", "GET, POST")
paddingLen := c.GetNormalizedXPaddingBytes().roll()
if paddingLen > 0 {
writer.Header().Set("X-Padding", strings.Repeat("0", int(paddingLen)))
}
}
func (c *Config) GetNormalizedScMaxConcurrentPosts() RandRangeConfig {
if c.ScMaxConcurrentPosts == nil || c.ScMaxConcurrentPosts.To == 0 {
return RandRangeConfig{
From: 100,
To: 100,
}
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}
return *c.ScMaxConcurrentPosts
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}
func (c *Config) GetNormalizedScMaxEachPostBytes() RandRangeConfig {
if c.ScMaxEachPostBytes == nil || c.ScMaxEachPostBytes.To == 0 {
return RandRangeConfig{
From: 1000000,
To: 1000000,
}
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}
return *c.ScMaxEachPostBytes
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}
func (c *Config) GetNormalizedScMinPostsIntervalMs() RandRangeConfig {
if c.ScMinPostsIntervalMs == nil || c.ScMinPostsIntervalMs.To == 0 {
return RandRangeConfig{
From: 30,
To: 30,
}
}
return *c.ScMinPostsIntervalMs
}
func (c *Config) GetNormalizedXPaddingBytes() RandRangeConfig {
if c.XPaddingBytes == nil || c.XPaddingBytes.To == 0 {
return RandRangeConfig{
From: 100,
To: 1000,
}
}
return *c.XPaddingBytes
}
func (m *Multiplexing) GetNormalizedCMaxReuseTimes() RandRangeConfig {
if m.CMaxReuseTimes == nil {
return RandRangeConfig{
From: 0,
To: 0,
}
}
return *m.CMaxReuseTimes
}
func (m *Multiplexing) GetNormalizedCMaxLifetimeMs() RandRangeConfig {
if m.CMaxLifetimeMs == nil || m.CMaxLifetimeMs.To == 0 {
return RandRangeConfig{
From: 0,
To: 0,
}
}
return *m.CMaxLifetimeMs
}
func (m *Multiplexing) GetNormalizedMaxConnections() RandRangeConfig {
if m.MaxConnections == nil {
return RandRangeConfig{
From: 0,
To: 0,
}
}
return *m.MaxConnections
}
func (m *Multiplexing) GetNormalizedMaxConcurrency() RandRangeConfig {
if m.MaxConcurrency == nil {
return RandRangeConfig{
From: 0,
To: 0,
}
}
return *m.MaxConcurrency
}
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func init() {
common.Must(internet.RegisterProtocolConfigCreator(protocolName, func() interface{} {
return new(Config)
}))
}
func (c RandRangeConfig) roll() int32 {
if c.From == c.To {
return c.From
}
bigInt, _ := rand.Int(rand.Reader, big.NewInt(int64(c.To-c.From)))
return c.From + int32(bigInt.Int64())
}