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