mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-21 16:11:31 +00:00
Add SplitHTTP Transport (#3412)
This commit is contained in:
mmmray
GitHub
parent
501d5dec60
commit
c10bd28731
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@ -16,6 +16,7 @@ type TransportConfig struct {
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GRPCConfig *GRPCConfig `json:"grpcSettings"`
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GUNConfig *GRPCConfig `json:"gunSettings"`
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HTTPUPGRADEConfig *HttpUpgradeConfig `json:"httpupgradeSettings"`
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SplitHTTPConfig *SplitHTTPConfig `json:"splithttpSettings"`
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}
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// Build implements Buildable.
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@ -113,5 +114,16 @@ func (c *TransportConfig) Build() (*global.Config, error) {
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})
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}
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if c.SplitHTTPConfig != nil {
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shs, err := c.SplitHTTPConfig.Build()
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if err != nil {
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return nil, newError("failed to build SplitHTTP config").Base(err)
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}
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config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
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ProtocolName: "splithttp",
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Settings: serial.ToTypedMessage(shs),
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})
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}
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return config, nil
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}
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@ -23,6 +23,7 @@ import (
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"github.com/xtls/xray-core/transport/internet/kcp"
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"github.com/xtls/xray-core/transport/internet/quic"
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"github.com/xtls/xray-core/transport/internet/reality"
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"github.com/xtls/xray-core/transport/internet/splithttp"
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"github.com/xtls/xray-core/transport/internet/tcp"
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"github.com/xtls/xray-core/transport/internet/tls"
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"github.com/xtls/xray-core/transport/internet/websocket"
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@ -223,6 +224,34 @@ func (c *HttpUpgradeConfig) Build() (proto.Message, error) {
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return config, nil
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}
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type SplitHTTPConfig struct {
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Host string `json:"host"`
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Path string `json:"path"`
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Headers map[string]string `json:"headers"`
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MaxConcurrentUploads int32 `json:"maxConcurrentUploads"`
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MaxUploadSize int32 `json:"maxUploadSize"`
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}
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// Build implements Buildable.
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func (c *SplitHTTPConfig) Build() (proto.Message, error) {
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// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
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// If we don't do that, http host will be overwritten as address.
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// Host priority: Host field > headers field > address.
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if c.Host == "" && c.Headers["host"] != "" {
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c.Host = c.Headers["host"]
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} else if c.Host == "" && c.Headers["Host"] != "" {
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c.Host = c.Headers["Host"]
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}
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config := &splithttp.Config{
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Path: c.Path,
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Host: c.Host,
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Header: c.Headers,
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MaxConcurrentUploads: c.MaxConcurrentUploads,
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MaxUploadSize: c.MaxUploadSize,
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}
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return config, nil
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}
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type HTTPConfig struct {
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Host *StringList `json:"host"`
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Path string `json:"path"`
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@ -648,6 +677,8 @@ func (p TransportProtocol) Build() (string, error) {
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return "grpc", nil
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case "httpupgrade":
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return "httpupgrade", nil
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case "splithttp":
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return "splithttp", nil
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default:
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return "", newError("Config: unknown transport protocol: ", p)
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}
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@ -762,6 +793,7 @@ type StreamConfig struct {
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GRPCConfig *GRPCConfig `json:"grpcSettings"`
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GUNConfig *GRPCConfig `json:"gunSettings"`
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HTTPUPGRADESettings *HttpUpgradeConfig `json:"httpupgradeSettings"`
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SplitHTTPSettings *SplitHTTPConfig `json:"splithttpSettings"`
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}
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// Build implements Buildable.
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@ -892,6 +924,16 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
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Settings: serial.ToTypedMessage(hs),
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})
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}
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if c.SplitHTTPSettings != nil {
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hs, err := c.SplitHTTPSettings.Build()
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if err != nil {
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return nil, newError("Failed to build SplitHTTP config.").Base(err)
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}
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config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
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ProtocolName: "splithttp",
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Settings: serial.ToTypedMessage(hs),
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})
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}
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if c.SocketSettings != nil {
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ss, err := c.SocketSettings.Build()
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if err != nil {
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@ -557,6 +557,9 @@ func applyTransportConfig(s *StreamConfig, t *TransportConfig) {
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if s.HTTPUPGRADESettings == nil {
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s.HTTPUPGRADESettings = t.HTTPUPGRADEConfig
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}
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if s.SplitHTTPSettings == nil {
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s.SplitHTTPSettings = t.SplitHTTPConfig
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}
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}
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// Build implements Buildable.
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@ -57,6 +57,7 @@ import (
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_ "github.com/xtls/xray-core/transport/internet/kcp"
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_ "github.com/xtls/xray-core/transport/internet/quic"
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_ "github.com/xtls/xray-core/transport/internet/reality"
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_ "github.com/xtls/xray-core/transport/internet/splithttp"
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_ "github.com/xtls/xray-core/transport/internet/tcp"
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_ "github.com/xtls/xray-core/transport/internet/tls"
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_ "github.com/xtls/xray-core/transport/internet/udp"
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@ -31,6 +31,7 @@ const (
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TransportProtocol_HTTP TransportProtocol = 4
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TransportProtocol_DomainSocket TransportProtocol = 5
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TransportProtocol_HTTPUpgrade TransportProtocol = 6
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TransportProtocol_SplitHTTP TransportProtocol = 7
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)
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// Enum value maps for TransportProtocol.
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@ -43,6 +44,7 @@ var (
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4: "HTTP",
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5: "DomainSocket",
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6: "HTTPUpgrade",
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7: "SplitHTTP",
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}
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TransportProtocol_value = map[string]int32{
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"TCP": 0,
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@ -52,6 +54,7 @@ var (
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"HTTP": 4,
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"DomainSocket": 5,
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"HTTPUpgrade": 6,
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"SplitHTTP": 7,
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}
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)
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@ -728,31 +731,32 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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}
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var (
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@ -16,6 +16,7 @@ enum TransportProtocol {
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HTTP = 4;
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DomainSocket = 5;
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HTTPUpgrade = 6;
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SplitHTTP = 7;
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}
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enum DomainStrategy {
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52
transport/internet/splithttp/config.go
Normal file
52
transport/internet/splithttp/config.go
Normal file
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@ -0,0 +1,52 @@
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package splithttp
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import (
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"net/http"
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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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path := c.Path
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if path == "" {
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path = "/"
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}
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if 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) GetRequestHeader() http.Header {
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header := http.Header{}
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for k, v := range c.Header {
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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) GetNormalizedMaxConcurrentUploads() int32 {
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if c.MaxConcurrentUploads == 0 {
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return 10
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}
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return c.MaxConcurrentUploads
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}
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func (c *Config) GetNormalizedMaxUploadSize() int32 {
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if c.MaxUploadSize == 0 {
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return 1000000
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}
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return c.MaxUploadSize
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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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202
transport/internet/splithttp/config.pb.go
Normal file
202
transport/internet/splithttp/config.pb.go
Normal file
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@ -0,0 +1,202 @@
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// Code generated by protoc-gen-go. DO NOT EDIT.
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// versions:
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// protoc-gen-go v1.34.1
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// protoc v5.27.0
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// source: transport/internet/splithttp/config.proto
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package splithttp
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import (
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protoreflect "google.golang.org/protobuf/reflect/protoreflect"
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protoimpl "google.golang.org/protobuf/runtime/protoimpl"
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reflect "reflect"
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sync "sync"
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)
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||||
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const (
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// Verify that this generated code is sufficiently up-to-date.
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_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
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||||
// Verify that runtime/protoimpl is sufficiently up-to-date.
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_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
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)
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type Config struct {
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||||
state protoimpl.MessageState
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||||
sizeCache protoimpl.SizeCache
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||||
unknownFields protoimpl.UnknownFields
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||||
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||||
Host string `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
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||||
Path string `protobuf:"bytes,2,opt,name=path,proto3" json:"path,omitempty"`
|
||||
Header map[string]string `protobuf:"bytes,3,rep,name=header,proto3" json:"header,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
|
||||
MaxConcurrentUploads int32 `protobuf:"varint,4,opt,name=maxConcurrentUploads,proto3" json:"maxConcurrentUploads,omitempty"`
|
||||
MaxUploadSize int32 `protobuf:"varint,5,opt,name=maxUploadSize,proto3" json:"maxUploadSize,omitempty"`
|
||||
}
|
||||
|
||||
func (x *Config) Reset() {
|
||||
*x = Config{}
|
||||
if protoimpl.UnsafeEnabled {
|
||||
mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
}
|
||||
|
||||
func (x *Config) String() string {
|
||||
return protoimpl.X.MessageStringOf(x)
|
||||
}
|
||||
|
||||
func (*Config) ProtoMessage() {}
|
||||
|
||||
func (x *Config) ProtoReflect() protoreflect.Message {
|
||||
mi := &file_transport_internet_splithttp_config_proto_msgTypes[0]
|
||||
if protoimpl.UnsafeEnabled && x != nil {
|
||||
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
|
||||
if ms.LoadMessageInfo() == nil {
|
||||
ms.StoreMessageInfo(mi)
|
||||
}
|
||||
return ms
|
||||
}
|
||||
return mi.MessageOf(x)
|
||||
}
|
||||
|
||||
// Deprecated: Use Config.ProtoReflect.Descriptor instead.
|
||||
func (*Config) Descriptor() ([]byte, []int) {
|
||||
return file_transport_internet_splithttp_config_proto_rawDescGZIP(), []int{0}
|
||||
}
|
||||
|
||||
func (x *Config) GetHost() string {
|
||||
if x != nil {
|
||||
return x.Host
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (x *Config) GetPath() string {
|
||||
if x != nil {
|
||||
return x.Path
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (x *Config) GetHeader() map[string]string {
|
||||
if x != nil {
|
||||
return x.Header
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (x *Config) GetMaxConcurrentUploads() int32 {
|
||||
if x != nil {
|
||||
return x.MaxConcurrentUploads
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (x *Config) GetMaxUploadSize() int32 {
|
||||
if x != nil {
|
||||
return x.MaxUploadSize
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
var File_transport_internet_splithttp_config_proto protoreflect.FileDescriptor
|
||||
|
||||
var file_transport_internet_splithttp_config_proto_rawDesc = []byte{
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
0x72, 0x6f, 0x74, 0x6f, 0x33,
|
||||
}
|
||||
|
||||
var (
|
||||
file_transport_internet_splithttp_config_proto_rawDescOnce sync.Once
|
||||
file_transport_internet_splithttp_config_proto_rawDescData = file_transport_internet_splithttp_config_proto_rawDesc
|
||||
)
|
||||
|
||||
func file_transport_internet_splithttp_config_proto_rawDescGZIP() []byte {
|
||||
file_transport_internet_splithttp_config_proto_rawDescOnce.Do(func() {
|
||||
file_transport_internet_splithttp_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_transport_internet_splithttp_config_proto_rawDescData)
|
||||
})
|
||||
return file_transport_internet_splithttp_config_proto_rawDescData
|
||||
}
|
||||
|
||||
var file_transport_internet_splithttp_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
|
||||
var file_transport_internet_splithttp_config_proto_goTypes = []interface{}{
|
||||
(*Config)(nil), // 0: xray.transport.internet.splithttp.Config
|
||||
nil, // 1: xray.transport.internet.splithttp.Config.HeaderEntry
|
||||
}
|
||||
var file_transport_internet_splithttp_config_proto_depIdxs = []int32{
|
||||
1, // 0: xray.transport.internet.splithttp.Config.header:type_name -> xray.transport.internet.splithttp.Config.HeaderEntry
|
||||
1, // [1:1] is the sub-list for method output_type
|
||||
1, // [1:1] is the sub-list for method input_type
|
||||
1, // [1:1] is the sub-list for extension type_name
|
||||
1, // [1:1] is the sub-list for extension extendee
|
||||
0, // [0:1] is the sub-list for field type_name
|
||||
}
|
||||
|
||||
func init() { file_transport_internet_splithttp_config_proto_init() }
|
||||
func file_transport_internet_splithttp_config_proto_init() {
|
||||
if File_transport_internet_splithttp_config_proto != nil {
|
||||
return
|
||||
}
|
||||
if !protoimpl.UnsafeEnabled {
|
||||
file_transport_internet_splithttp_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
|
||||
switch v := v.(*Config); i {
|
||||
case 0:
|
||||
return &v.state
|
||||
case 1:
|
||||
return &v.sizeCache
|
||||
case 2:
|
||||
return &v.unknownFields
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
}
|
||||
type x struct{}
|
||||
out := protoimpl.TypeBuilder{
|
||||
File: protoimpl.DescBuilder{
|
||||
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
|
||||
RawDescriptor: file_transport_internet_splithttp_config_proto_rawDesc,
|
||||
NumEnums: 0,
|
||||
NumMessages: 2,
|
||||
NumExtensions: 0,
|
||||
NumServices: 0,
|
||||
},
|
||||
GoTypes: file_transport_internet_splithttp_config_proto_goTypes,
|
||||
DependencyIndexes: file_transport_internet_splithttp_config_proto_depIdxs,
|
||||
MessageInfos: file_transport_internet_splithttp_config_proto_msgTypes,
|
||||
}.Build()
|
||||
File_transport_internet_splithttp_config_proto = out.File
|
||||
file_transport_internet_splithttp_config_proto_rawDesc = nil
|
||||
file_transport_internet_splithttp_config_proto_goTypes = nil
|
||||
file_transport_internet_splithttp_config_proto_depIdxs = nil
|
||||
}
|
||||
15
transport/internet/splithttp/config.proto
Normal file
15
transport/internet/splithttp/config.proto
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
syntax = "proto3";
|
||||
|
||||
package xray.transport.internet.splithttp;
|
||||
option csharp_namespace = "Xray.Transport.Internet.SplitHttp";
|
||||
option go_package = "github.com/xtls/xray-core/transport/internet/splithttp";
|
||||
option java_package = "com.xray.transport.internet.splithttp";
|
||||
option java_multiple_files = true;
|
||||
|
||||
message Config {
|
||||
string host = 1;
|
||||
string path = 2;
|
||||
map<string, string> header = 3;
|
||||
int32 maxConcurrentUploads = 4;
|
||||
int32 maxUploadSize = 5;
|
||||
}
|
||||
59
transport/internet/splithttp/connection.go
Normal file
59
transport/internet/splithttp/connection.go
Normal file
|
|
@ -0,0 +1,59 @@
|
|||
package splithttp
|
||||
|
||||
import (
|
||||
"io"
|
||||
"net"
|
||||
"time"
|
||||
)
|
||||
|
||||
type splitConn struct {
|
||||
writer io.WriteCloser
|
||||
reader io.ReadCloser
|
||||
remoteAddr net.Addr
|
||||
localAddr net.Addr
|
||||
}
|
||||
|
||||
func (c *splitConn) Write(b []byte) (int, error) {
|
||||
return c.writer.Write(b)
|
||||
}
|
||||
|
||||
func (c *splitConn) Read(b []byte) (int, error) {
|
||||
return c.reader.Read(b)
|
||||
}
|
||||
|
||||
func (c *splitConn) Close() error {
|
||||
err := c.writer.Close()
|
||||
err2 := c.reader.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err2 != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *splitConn) LocalAddr() net.Addr {
|
||||
return c.localAddr
|
||||
}
|
||||
|
||||
func (c *splitConn) RemoteAddr() net.Addr {
|
||||
return c.remoteAddr
|
||||
}
|
||||
|
||||
func (c *splitConn) SetDeadline(t time.Time) error {
|
||||
// TODO cannot do anything useful
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *splitConn) SetReadDeadline(t time.Time) error {
|
||||
// TODO cannot do anything useful
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *splitConn) SetWriteDeadline(t time.Time) error {
|
||||
// TODO cannot do anything useful
|
||||
return nil
|
||||
}
|
||||
316
transport/internet/splithttp/dialer.go
Normal file
316
transport/internet/splithttp/dialer.go
Normal file
|
|
@ -0,0 +1,316 @@
|
|||
package splithttp
|
||||
|
||||
import (
|
||||
"context"
|
||||
gotls "crypto/tls"
|
||||
"io"
|
||||
gonet "net"
|
||||
"net/http"
|
||||
"net/http/httptrace"
|
||||
"net/url"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
"github.com/xtls/xray-core/common/buf"
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
"github.com/xtls/xray-core/common/session"
|
||||
"github.com/xtls/xray-core/common/signal/semaphore"
|
||||
"github.com/xtls/xray-core/common/uuid"
|
||||
"github.com/xtls/xray-core/transport/internet"
|
||||
"github.com/xtls/xray-core/transport/internet/stat"
|
||||
"github.com/xtls/xray-core/transport/internet/tls"
|
||||
"github.com/xtls/xray-core/transport/pipe"
|
||||
"golang.org/x/net/http2"
|
||||
)
|
||||
|
||||
type dialerConf struct {
|
||||
net.Destination
|
||||
*internet.MemoryStreamConfig
|
||||
}
|
||||
|
||||
type reusedClient struct {
|
||||
download *http.Client
|
||||
upload *http.Client
|
||||
isH2 bool
|
||||
// pool of net.Conn, created using dialUploadConn
|
||||
uploadRawPool *sync.Pool
|
||||
dialUploadConn func(ctxInner context.Context) (net.Conn, error)
|
||||
}
|
||||
|
||||
var (
|
||||
globalDialerMap map[dialerConf]reusedClient
|
||||
globalDialerAccess sync.Mutex
|
||||
)
|
||||
|
||||
func destroyHTTPClient(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) {
|
||||
globalDialerAccess.Lock()
|
||||
defer globalDialerAccess.Unlock()
|
||||
|
||||
if globalDialerMap == nil {
|
||||
globalDialerMap = make(map[dialerConf]reusedClient)
|
||||
}
|
||||
|
||||
delete(globalDialerMap, dialerConf{dest, streamSettings})
|
||||
|
||||
}
|
||||
|
||||
func getHTTPClient(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) reusedClient {
|
||||
globalDialerAccess.Lock()
|
||||
defer globalDialerAccess.Unlock()
|
||||
|
||||
if globalDialerMap == nil {
|
||||
globalDialerMap = make(map[dialerConf]reusedClient)
|
||||
}
|
||||
|
||||
if client, found := globalDialerMap[dialerConf{dest, streamSettings}]; found {
|
||||
return client
|
||||
}
|
||||
|
||||
tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
|
||||
|
||||
var gotlsConfig *gotls.Config
|
||||
|
||||
if tlsConfig != nil {
|
||||
gotlsConfig = tlsConfig.GetTLSConfig(tls.WithDestination(dest))
|
||||
}
|
||||
|
||||
dialContext := func(ctxInner context.Context) (net.Conn, error) {
|
||||
conn, err := internet.DialSystem(ctx, dest, streamSettings.SocketSettings)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if gotlsConfig != nil {
|
||||
if fingerprint := tls.GetFingerprint(tlsConfig.Fingerprint); fingerprint != nil {
|
||||
conn = tls.UClient(conn, gotlsConfig, fingerprint)
|
||||
if err := conn.(*tls.UConn).HandshakeContext(ctx); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
conn = tls.Client(conn, gotlsConfig)
|
||||
}
|
||||
}
|
||||
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
var uploadTransport http.RoundTripper
|
||||
var downloadTransport http.RoundTripper
|
||||
|
||||
if tlsConfig != nil {
|
||||
downloadTransport = &http2.Transport{
|
||||
DialTLSContext: func(ctxInner context.Context, network string, addr string, cfg *gotls.Config) (net.Conn, error) {
|
||||
return dialContext(ctxInner)
|
||||
},
|
||||
IdleConnTimeout: 90 * time.Second,
|
||||
}
|
||||
uploadTransport = downloadTransport
|
||||
} else {
|
||||
httpDialContext := func(ctxInner context.Context, network string, addr string) (net.Conn, error) {
|
||||
return dialContext(ctxInner)
|
||||
}
|
||||
|
||||
downloadTransport = &http.Transport{
|
||||
DialTLSContext: httpDialContext,
|
||||
DialContext: httpDialContext,
|
||||
IdleConnTimeout: 90 * time.Second,
|
||||
// chunked transfer download with keepalives is buggy with
|
||||
// http.Client and our custom dial context.
|
||||
DisableKeepAlives: true,
|
||||
}
|
||||
|
||||
// we use uploadRawPool for that
|
||||
uploadTransport = nil
|
||||
}
|
||||
|
||||
client := reusedClient{
|
||||
download: &http.Client{
|
||||
Transport: downloadTransport,
|
||||
},
|
||||
upload: &http.Client{
|
||||
Transport: uploadTransport,
|
||||
},
|
||||
isH2: tlsConfig != nil,
|
||||
uploadRawPool: &sync.Pool{},
|
||||
dialUploadConn: dialContext,
|
||||
}
|
||||
|
||||
globalDialerMap[dialerConf{dest, streamSettings}] = client
|
||||
return client
|
||||
}
|
||||
|
||||
func init() {
|
||||
common.Must(internet.RegisterTransportDialer(protocolName, Dial))
|
||||
}
|
||||
|
||||
func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
|
||||
newError("dialing splithttp to ", dest).WriteToLog(session.ExportIDToError(ctx))
|
||||
|
||||
var requestURL url.URL
|
||||
|
||||
transportConfiguration := streamSettings.ProtocolSettings.(*Config)
|
||||
tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
|
||||
|
||||
maxConcurrentUploads := transportConfiguration.GetNormalizedMaxConcurrentUploads()
|
||||
maxUploadSize := transportConfiguration.GetNormalizedMaxUploadSize()
|
||||
|
||||
if tlsConfig != nil {
|
||||
requestURL.Scheme = "https"
|
||||
} else {
|
||||
requestURL.Scheme = "http"
|
||||
}
|
||||
requestURL.Host = transportConfiguration.Host
|
||||
if requestURL.Host == "" {
|
||||
requestURL.Host = dest.NetAddr()
|
||||
}
|
||||
requestURL.Path = transportConfiguration.GetNormalizedPath()
|
||||
|
||||
httpClient := getHTTPClient(ctx, dest, streamSettings)
|
||||
|
||||
var remoteAddr gonet.Addr
|
||||
var localAddr gonet.Addr
|
||||
|
||||
trace := &httptrace.ClientTrace{
|
||||
GotConn: func(connInfo httptrace.GotConnInfo) {
|
||||
remoteAddr = connInfo.Conn.RemoteAddr()
|
||||
localAddr = connInfo.Conn.LocalAddr()
|
||||
},
|
||||
}
|
||||
|
||||
sessionIdUuid := uuid.New()
|
||||
sessionId := sessionIdUuid.String()
|
||||
|
||||
req, err := http.NewRequestWithContext(
|
||||
httptrace.WithClientTrace(ctx, trace),
|
||||
"GET",
|
||||
requestURL.String()+"?session="+sessionId,
|
||||
nil,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
req.Header = transportConfiguration.GetRequestHeader()
|
||||
|
||||
downResponse, err := httpClient.download.Do(req)
|
||||
if err != nil {
|
||||
// workaround for various connection pool related issues, mostly around
|
||||
// HTTP/1.1. if the http client ever fails to send a request, we simply
|
||||
// delete it entirely.
|
||||
// in HTTP/1.1, it was observed that pool connections would immediately
|
||||
// fail with "context canceled" if the previous http response body was
|
||||
// not explicitly BOTH drained and closed. at the same time, sometimes
|
||||
// the draining itself takes forever and causes more problems.
|
||||
// see also https://github.com/golang/go/issues/60240
|
||||
destroyHTTPClient(ctx, dest, streamSettings)
|
||||
return nil, newError("failed to send download http request, destroying client").Base(err)
|
||||
}
|
||||
|
||||
if downResponse.StatusCode != 200 {
|
||||
downResponse.Body.Close()
|
||||
return nil, newError("invalid status code on download:", downResponse.Status)
|
||||
}
|
||||
|
||||
uploadUrl := requestURL.String() + "?session=" + sessionId + "&seq="
|
||||
|
||||
uploadPipeReader, uploadPipeWriter := pipe.New(pipe.WithSizeLimit(maxUploadSize))
|
||||
|
||||
go func() {
|
||||
requestsLimiter := semaphore.New(int(maxConcurrentUploads))
|
||||
var requestCounter int64
|
||||
|
||||
// by offloading the uploads into a buffered pipe, multiple conn.Write
|
||||
// calls get automatically batched together into larger POST requests.
|
||||
// without batching, bandwidth is extremely limited.
|
||||
for {
|
||||
chunk, err := uploadPipeReader.ReadMultiBuffer()
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
|
||||
<-requestsLimiter.Wait()
|
||||
|
||||
url := uploadUrl + strconv.FormatInt(requestCounter, 10)
|
||||
requestCounter += 1
|
||||
|
||||
go func() {
|
||||
defer requestsLimiter.Signal()
|
||||
req, err := http.NewRequest("POST", url, &buf.MultiBufferContainer{MultiBuffer: chunk})
|
||||
if err != nil {
|
||||
newError("failed to send upload").Base(err).WriteToLog()
|
||||
uploadPipeReader.Interrupt()
|
||||
return
|
||||
}
|
||||
|
||||
req.Header = transportConfiguration.GetRequestHeader()
|
||||
|
||||
if httpClient.isH2 {
|
||||
resp, err := httpClient.upload.Do(req)
|
||||
if err != nil {
|
||||
newError("failed to send upload").Base(err).WriteToLog()
|
||||
uploadPipeReader.Interrupt()
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != 200 {
|
||||
newError("failed to send upload, bad status code:", resp.Status).WriteToLog()
|
||||
uploadPipeReader.Interrupt()
|
||||
return
|
||||
}
|
||||
} else {
|
||||
var err error
|
||||
var uploadConn any
|
||||
for _ = range 5 {
|
||||
uploadConn = httpClient.uploadRawPool.Get()
|
||||
if uploadConn == nil {
|
||||
uploadConn, err = httpClient.dialUploadConn(ctx)
|
||||
if err != nil {
|
||||
newError("failed to connect upload").Base(err).WriteToLog()
|
||||
uploadPipeReader.Interrupt()
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
err = req.Write(uploadConn.(net.Conn))
|
||||
if err == nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
newError("failed to send upload").Base(err).WriteToLog()
|
||||
uploadPipeReader.Interrupt()
|
||||
return
|
||||
}
|
||||
|
||||
httpClient.uploadRawPool.Put(uploadConn)
|
||||
}
|
||||
}()
|
||||
|
||||
}
|
||||
}()
|
||||
|
||||
// skip "ok" response
|
||||
trashHeader := []byte{0, 0}
|
||||
_, err = io.ReadFull(downResponse.Body, trashHeader)
|
||||
if err != nil {
|
||||
downResponse.Body.Close()
|
||||
return nil, newError("failed to read initial response")
|
||||
}
|
||||
|
||||
// necessary in order to send larger chunks in upload
|
||||
bufferedUploadPipeWriter := buf.NewBufferedWriter(uploadPipeWriter)
|
||||
bufferedUploadPipeWriter.SetBuffered(false)
|
||||
|
||||
conn := splitConn{
|
||||
writer: bufferedUploadPipeWriter,
|
||||
reader: downResponse.Body,
|
||||
remoteAddr: remoteAddr,
|
||||
localAddr: localAddr,
|
||||
}
|
||||
|
||||
return stat.Connection(&conn), nil
|
||||
}
|
||||
9
transport/internet/splithttp/errors.generated.go
Normal file
9
transport/internet/splithttp/errors.generated.go
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
package splithttp
|
||||
|
||||
import "github.com/xtls/xray-core/common/errors"
|
||||
|
||||
type errPathObjHolder struct{}
|
||||
|
||||
func newError(values ...interface{}) *errors.Error {
|
||||
return errors.New(values...).WithPathObj(errPathObjHolder{})
|
||||
}
|
||||
262
transport/internet/splithttp/hub.go
Normal file
262
transport/internet/splithttp/hub.go
Normal file
|
|
@ -0,0 +1,262 @@
|
|||
package splithttp
|
||||
|
||||
import (
|
||||
"context"
|
||||
"crypto/tls"
|
||||
"io"
|
||||
gonet "net"
|
||||
"net/http"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
http_proto "github.com/xtls/xray-core/common/protocol/http"
|
||||
"github.com/xtls/xray-core/common/session"
|
||||
"github.com/xtls/xray-core/common/signal/done"
|
||||
"github.com/xtls/xray-core/transport/internet"
|
||||
"github.com/xtls/xray-core/transport/internet/stat"
|
||||
v2tls "github.com/xtls/xray-core/transport/internet/tls"
|
||||
)
|
||||
|
||||
type requestHandler struct {
|
||||
host string
|
||||
path string
|
||||
ln *Listener
|
||||
sessions sync.Map
|
||||
localAddr gonet.TCPAddr
|
||||
}
|
||||
|
||||
func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
|
||||
if len(h.host) > 0 && request.Host != h.host {
|
||||
newError("failed to validate host, request:", request.Host, ", config:", h.host).WriteToLog()
|
||||
writer.WriteHeader(http.StatusNotFound)
|
||||
return
|
||||
}
|
||||
if request.URL.Path != h.path {
|
||||
newError("failed to validate path, request:", request.URL.Path, ", config:", h.path).WriteToLog()
|
||||
writer.WriteHeader(http.StatusNotFound)
|
||||
return
|
||||
}
|
||||
|
||||
queryString := request.URL.Query()
|
||||
sessionId := queryString.Get("session")
|
||||
if sessionId == "" {
|
||||
newError("no sessionid on request:", request.URL.Path).WriteToLog()
|
||||
writer.WriteHeader(http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
forwardedAddrs := http_proto.ParseXForwardedFor(request.Header)
|
||||
remoteAddr, err := gonet.ResolveTCPAddr("tcp", request.RemoteAddr)
|
||||
if err != nil {
|
||||
remoteAddr = &gonet.TCPAddr{}
|
||||
}
|
||||
if len(forwardedAddrs) > 0 && forwardedAddrs[0].Family().IsIP() {
|
||||
remoteAddr = &net.TCPAddr{
|
||||
IP: forwardedAddrs[0].IP(),
|
||||
Port: int(0),
|
||||
}
|
||||
}
|
||||
|
||||
if request.Method == "POST" {
|
||||
uploadQueue, ok := h.sessions.Load(sessionId)
|
||||
if !ok {
|
||||
newError("sessionid does not exist").WriteToLog()
|
||||
writer.WriteHeader(http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
seq := queryString.Get("seq")
|
||||
if seq == "" {
|
||||
newError("no seq on request:", request.URL.Path).WriteToLog()
|
||||
writer.WriteHeader(http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
|
||||
payload, err := io.ReadAll(request.Body)
|
||||
if err != nil {
|
||||
newError("failed to upload").Base(err).WriteToLog()
|
||||
writer.WriteHeader(http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
|
||||
seqInt, err := strconv.ParseUint(seq, 10, 64)
|
||||
if err != nil {
|
||||
newError("failed to upload").Base(err).WriteToLog()
|
||||
writer.WriteHeader(http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
|
||||
err = uploadQueue.(*UploadQueue).Push(Packet{
|
||||
Payload: payload,
|
||||
Seq: seqInt,
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
newError("failed to upload").Base(err).WriteToLog()
|
||||
writer.WriteHeader(http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
} else if request.Method == "GET" {
|
||||
responseFlusher, ok := writer.(http.Flusher)
|
||||
if !ok {
|
||||
panic("expected http.ResponseWriter to be an http.Flusher")
|
||||
}
|
||||
|
||||
uploadQueue := NewUploadQueue(int(2 * h.ln.config.GetNormalizedMaxConcurrentUploads()))
|
||||
|
||||
h.sessions.Store(sessionId, uploadQueue)
|
||||
// the connection is finished, clean up map
|
||||
defer h.sessions.Delete(sessionId)
|
||||
|
||||
// magic header instructs nginx + apache to not buffer response body
|
||||
writer.Header().Set("X-Accel-Buffering", "no")
|
||||
writer.WriteHeader(http.StatusOK)
|
||||
// send a chunk immediately to enable CDN streaming.
|
||||
// many CDN buffer the response headers until the origin starts sending
|
||||
// the body, with no way to turn it off.
|
||||
writer.Write([]byte("ok"))
|
||||
responseFlusher.Flush()
|
||||
|
||||
downloadDone := done.New()
|
||||
|
||||
conn := splitConn{
|
||||
writer: &httpResponseBodyWriter{
|
||||
responseWriter: writer,
|
||||
downloadDone: downloadDone,
|
||||
responseFlusher: responseFlusher,
|
||||
},
|
||||
reader: uploadQueue,
|
||||
remoteAddr: remoteAddr,
|
||||
}
|
||||
|
||||
h.ln.addConn(stat.Connection(&conn))
|
||||
|
||||
// "A ResponseWriter may not be used after [Handler.ServeHTTP] has returned."
|
||||
<-downloadDone.Wait()
|
||||
|
||||
} else {
|
||||
writer.WriteHeader(http.StatusMethodNotAllowed)
|
||||
}
|
||||
}
|
||||
|
||||
type httpResponseBodyWriter struct {
|
||||
sync.Mutex
|
||||
responseWriter http.ResponseWriter
|
||||
responseFlusher http.Flusher
|
||||
downloadDone *done.Instance
|
||||
}
|
||||
|
||||
func (c *httpResponseBodyWriter) Write(b []byte) (int, error) {
|
||||
c.Lock()
|
||||
defer c.Unlock()
|
||||
if c.downloadDone.Done() {
|
||||
return 0, io.ErrClosedPipe
|
||||
}
|
||||
n, err := c.responseWriter.Write(b)
|
||||
if err == nil {
|
||||
c.responseFlusher.Flush()
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (c *httpResponseBodyWriter) Close() error {
|
||||
c.Lock()
|
||||
defer c.Unlock()
|
||||
c.downloadDone.Close()
|
||||
return nil
|
||||
}
|
||||
|
||||
type Listener struct {
|
||||
sync.Mutex
|
||||
server http.Server
|
||||
listener net.Listener
|
||||
config *Config
|
||||
addConn internet.ConnHandler
|
||||
}
|
||||
|
||||
func ListenSH(ctx context.Context, address net.Address, port net.Port, streamSettings *internet.MemoryStreamConfig, addConn internet.ConnHandler) (internet.Listener, error) {
|
||||
l := &Listener{
|
||||
addConn: addConn,
|
||||
}
|
||||
shSettings := streamSettings.ProtocolSettings.(*Config)
|
||||
l.config = shSettings
|
||||
if l.config != nil {
|
||||
if streamSettings.SocketSettings == nil {
|
||||
streamSettings.SocketSettings = &internet.SocketConfig{}
|
||||
}
|
||||
}
|
||||
var listener net.Listener
|
||||
var err error
|
||||
var localAddr = gonet.TCPAddr{}
|
||||
|
||||
if port == net.Port(0) { // unix
|
||||
listener, err = internet.ListenSystem(ctx, &net.UnixAddr{
|
||||
Name: address.Domain(),
|
||||
Net: "unix",
|
||||
}, streamSettings.SocketSettings)
|
||||
if err != nil {
|
||||
return nil, newError("failed to listen unix domain socket(for SH) on ", address).Base(err)
|
||||
}
|
||||
newError("listening unix domain socket(for SH) on ", address).WriteToLog(session.ExportIDToError(ctx))
|
||||
} else { // tcp
|
||||
localAddr = gonet.TCPAddr{
|
||||
IP: address.IP(),
|
||||
Port: int(port),
|
||||
}
|
||||
listener, err = internet.ListenSystem(ctx, &net.TCPAddr{
|
||||
IP: address.IP(),
|
||||
Port: int(port),
|
||||
}, streamSettings.SocketSettings)
|
||||
if err != nil {
|
||||
return nil, newError("failed to listen TCP(for SH) on ", address, ":", port).Base(err)
|
||||
}
|
||||
newError("listening TCP(for SH) on ", address, ":", port).WriteToLog(session.ExportIDToError(ctx))
|
||||
}
|
||||
|
||||
if config := v2tls.ConfigFromStreamSettings(streamSettings); config != nil {
|
||||
if tlsConfig := config.GetTLSConfig(); tlsConfig != nil {
|
||||
listener = tls.NewListener(listener, tlsConfig)
|
||||
}
|
||||
}
|
||||
|
||||
l.listener = listener
|
||||
|
||||
l.server = http.Server{
|
||||
Handler: &requestHandler{
|
||||
host: shSettings.Host,
|
||||
path: shSettings.GetNormalizedPath(),
|
||||
ln: l,
|
||||
sessions: sync.Map{},
|
||||
localAddr: localAddr,
|
||||
},
|
||||
ReadHeaderTimeout: time.Second * 4,
|
||||
MaxHeaderBytes: 8192,
|
||||
}
|
||||
|
||||
go func() {
|
||||
if err := l.server.Serve(l.listener); err != nil {
|
||||
newError("failed to serve http for splithttp").Base(err).AtWarning().WriteToLog(session.ExportIDToError(ctx))
|
||||
}
|
||||
}()
|
||||
|
||||
return l, err
|
||||
}
|
||||
|
||||
// Addr implements net.Listener.Addr().
|
||||
func (ln *Listener) Addr() net.Addr {
|
||||
return ln.listener.Addr()
|
||||
}
|
||||
|
||||
// Close implements net.Listener.Close().
|
||||
func (ln *Listener) Close() error {
|
||||
return ln.listener.Close()
|
||||
}
|
||||
|
||||
func init() {
|
||||
common.Must(internet.RegisterTransportListener(protocolName, ListenSH))
|
||||
}
|
||||
17
transport/internet/splithttp/splithttp.go
Normal file
17
transport/internet/splithttp/splithttp.go
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
package splithttp
|
||||
|
||||
import (
|
||||
"context"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
)
|
||||
|
||||
//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
|
||||
|
||||
const protocolName = "splithttp"
|
||||
|
||||
func init() {
|
||||
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
|
||||
return nil, newError("splithttp is a transport protocol.")
|
||||
}))
|
||||
}
|
||||
154
transport/internet/splithttp/splithttp_test.go
Normal file
154
transport/internet/splithttp/splithttp_test.go
Normal file
|
|
@ -0,0 +1,154 @@
|
|||
package splithttp_test
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"runtime"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/xtls/xray-core/common"
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
"github.com/xtls/xray-core/common/protocol/tls/cert"
|
||||
"github.com/xtls/xray-core/testing/servers/tcp"
|
||||
"github.com/xtls/xray-core/transport/internet"
|
||||
. "github.com/xtls/xray-core/transport/internet/splithttp"
|
||||
"github.com/xtls/xray-core/transport/internet/stat"
|
||||
"github.com/xtls/xray-core/transport/internet/tls"
|
||||
)
|
||||
|
||||
func Test_listenSHAndDial(t *testing.T) {
|
||||
listenPort := tcp.PickPort()
|
||||
listen, err := ListenSH(context.Background(), net.LocalHostIP, listenPort, &internet.MemoryStreamConfig{
|
||||
ProtocolName: "splithttp",
|
||||
ProtocolSettings: &Config{
|
||||
Path: "/sh",
|
||||
},
|
||||
}, func(conn stat.Connection) {
|
||||
go func(c stat.Connection) {
|
||||
defer c.Close()
|
||||
|
||||
var b [1024]byte
|
||||
_, err := c.Read(b[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
common.Must2(c.Write([]byte("Response")))
|
||||
}(conn)
|
||||
})
|
||||
common.Must(err)
|
||||
ctx := context.Background()
|
||||
streamSettings := &internet.MemoryStreamConfig{
|
||||
ProtocolName: "splithttp",
|
||||
ProtocolSettings: &Config{Path: "sh"},
|
||||
}
|
||||
conn, err := Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), listenPort), streamSettings)
|
||||
|
||||
common.Must(err)
|
||||
_, err = conn.Write([]byte("Test connection 1"))
|
||||
common.Must(err)
|
||||
|
||||
var b [1024]byte
|
||||
fmt.Println("test2")
|
||||
n, _ := conn.Read(b[:])
|
||||
fmt.Println("string is", n)
|
||||
if string(b[:n]) != "Response" {
|
||||
t.Error("response: ", string(b[:n]))
|
||||
}
|
||||
|
||||
common.Must(conn.Close())
|
||||
<-time.After(time.Second * 5)
|
||||
conn, err = Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), listenPort), streamSettings)
|
||||
common.Must(err)
|
||||
_, err = conn.Write([]byte("Test connection 2"))
|
||||
common.Must(err)
|
||||
n, _ = conn.Read(b[:])
|
||||
common.Must(err)
|
||||
if string(b[:n]) != "Response" {
|
||||
t.Error("response: ", string(b[:n]))
|
||||
}
|
||||
common.Must(conn.Close())
|
||||
|
||||
common.Must(listen.Close())
|
||||
}
|
||||
|
||||
func TestDialWithRemoteAddr(t *testing.T) {
|
||||
listenPort := tcp.PickPort()
|
||||
listen, err := ListenSH(context.Background(), net.LocalHostIP, listenPort, &internet.MemoryStreamConfig{
|
||||
ProtocolName: "splithttp",
|
||||
ProtocolSettings: &Config{
|
||||
Path: "sh",
|
||||
},
|
||||
}, func(conn stat.Connection) {
|
||||
go func(c stat.Connection) {
|
||||
defer c.Close()
|
||||
|
||||
var b [1024]byte
|
||||
_, err := c.Read(b[:])
|
||||
// common.Must(err)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = c.Write([]byte("Response"))
|
||||
common.Must(err)
|
||||
}(conn)
|
||||
})
|
||||
common.Must(err)
|
||||
|
||||
conn, err := Dial(context.Background(), net.TCPDestination(net.DomainAddress("localhost"), listenPort), &internet.MemoryStreamConfig{
|
||||
ProtocolName: "splithttp",
|
||||
ProtocolSettings: &Config{Path: "sh", Header: map[string]string{"X-Forwarded-For": "1.1.1.1"}},
|
||||
})
|
||||
|
||||
common.Must(err)
|
||||
_, err = conn.Write([]byte("Test connection 1"))
|
||||
common.Must(err)
|
||||
|
||||
var b [1024]byte
|
||||
n, _ := conn.Read(b[:])
|
||||
if string(b[:n]) != "Response" {
|
||||
t.Error("response: ", string(b[:n]))
|
||||
}
|
||||
|
||||
common.Must(listen.Close())
|
||||
}
|
||||
|
||||
func Test_listenSHAndDial_TLS(t *testing.T) {
|
||||
if runtime.GOARCH == "arm64" {
|
||||
return
|
||||
}
|
||||
|
||||
listenPort := tcp.PickPort()
|
||||
|
||||
start := time.Now()
|
||||
|
||||
streamSettings := &internet.MemoryStreamConfig{
|
||||
ProtocolName: "splithttp",
|
||||
ProtocolSettings: &Config{
|
||||
Path: "shs",
|
||||
},
|
||||
SecurityType: "tls",
|
||||
SecuritySettings: &tls.Config{
|
||||
AllowInsecure: true,
|
||||
Certificate: []*tls.Certificate{tls.ParseCertificate(cert.MustGenerate(nil, cert.CommonName("localhost")))},
|
||||
},
|
||||
}
|
||||
listen, err := ListenSH(context.Background(), net.LocalHostIP, listenPort, streamSettings, func(conn stat.Connection) {
|
||||
go func() {
|
||||
_ = conn.Close()
|
||||
}()
|
||||
})
|
||||
common.Must(err)
|
||||
defer listen.Close()
|
||||
|
||||
conn, err := Dial(context.Background(), net.TCPDestination(net.DomainAddress("localhost"), listenPort), streamSettings)
|
||||
common.Must(err)
|
||||
_ = conn.Close()
|
||||
|
||||
end := time.Now()
|
||||
if !end.Before(start.Add(time.Second * 5)) {
|
||||
t.Error("end: ", end, " start: ", start)
|
||||
}
|
||||
}
|
||||
120
transport/internet/splithttp/upload_queue.go
Normal file
120
transport/internet/splithttp/upload_queue.go
Normal file
|
|
@ -0,0 +1,120 @@
|
|||
package splithttp
|
||||
|
||||
// upload_queue is a specialized priorityqueue + channel to reorder generic
|
||||
// packets by a sequence number
|
||||
|
||||
import (
|
||||
"container/heap"
|
||||
"io"
|
||||
)
|
||||
|
||||
type Packet struct {
|
||||
Payload []byte
|
||||
Seq uint64
|
||||
}
|
||||
|
||||
type UploadQueue struct {
|
||||
pushedPackets chan Packet
|
||||
heap uploadHeap
|
||||
nextSeq uint64
|
||||
closed bool
|
||||
maxPackets int
|
||||
}
|
||||
|
||||
func NewUploadQueue(maxPackets int) *UploadQueue {
|
||||
return &UploadQueue{
|
||||
pushedPackets: make(chan Packet, maxPackets),
|
||||
heap: uploadHeap{},
|
||||
nextSeq: 0,
|
||||
closed: false,
|
||||
maxPackets: maxPackets,
|
||||
}
|
||||
}
|
||||
|
||||
func (h *UploadQueue) Push(p Packet) error {
|
||||
if h.closed {
|
||||
return newError("splithttp packet queue closed")
|
||||
}
|
||||
|
||||
h.pushedPackets <- p
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *UploadQueue) Close() error {
|
||||
h.closed = true
|
||||
close(h.pushedPackets)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (h *UploadQueue) Read(b []byte) (int, error) {
|
||||
if h.closed && len(h.heap) == 0 && len(h.pushedPackets) == 0 {
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
needMorePackets := false
|
||||
|
||||
if len(h.heap) > 0 {
|
||||
packet := heap.Pop(&h.heap).(Packet)
|
||||
n := 0
|
||||
|
||||
if packet.Seq == h.nextSeq {
|
||||
copy(b, packet.Payload)
|
||||
n = min(len(b), len(packet.Payload))
|
||||
|
||||
if n < len(packet.Payload) {
|
||||
// partial read
|
||||
packet.Payload = packet.Payload[n:]
|
||||
heap.Push(&h.heap, packet)
|
||||
} else {
|
||||
h.nextSeq = packet.Seq + 1
|
||||
}
|
||||
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// misordered packet
|
||||
if packet.Seq > h.nextSeq {
|
||||
if len(h.heap) > h.maxPackets {
|
||||
// the "reassembly buffer" is too large, and we want to
|
||||
// constrain memory usage somehow. let's tear down the
|
||||
// connection, and hope the application retries.
|
||||
return 0, newError("packet queue is too large")
|
||||
}
|
||||
heap.Push(&h.heap, packet)
|
||||
needMorePackets = true
|
||||
}
|
||||
} else {
|
||||
needMorePackets = true
|
||||
}
|
||||
|
||||
if needMorePackets {
|
||||
packet, more := <-h.pushedPackets
|
||||
if !more {
|
||||
return 0, io.EOF
|
||||
}
|
||||
heap.Push(&h.heap, packet)
|
||||
}
|
||||
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
// heap code directly taken from https://pkg.go.dev/container/heap
|
||||
type uploadHeap []Packet
|
||||
|
||||
func (h uploadHeap) Len() int { return len(h) }
|
||||
func (h uploadHeap) Less(i, j int) bool { return h[i].Seq < h[j].Seq }
|
||||
func (h uploadHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] }
|
||||
|
||||
func (h *uploadHeap) Push(x any) {
|
||||
// Push and Pop use pointer receivers because they modify the slice's length,
|
||||
// not just its contents.
|
||||
*h = append(*h, x.(Packet))
|
||||
}
|
||||
|
||||
func (h *uploadHeap) Pop() any {
|
||||
old := *h
|
||||
n := len(old)
|
||||
x := old[n-1]
|
||||
*h = old[0 : n-1]
|
||||
return x
|
||||
}
|
||||
Loading…
Reference in a new issue