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XHTTP: Add "stream-up" mode for client & server (#3994)

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RPRX 2024-11-09 11:05:41 +00:00 committed by GitHub
parent 94c02f090e
commit bc4bf3d38f
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GPG Key ID: B5690EEEBB952194
8 changed files with 164 additions and 77 deletions
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10
infra/conf/transport_internet.go
View File

@ -233,6 +233,7 @@ type SplitHTTPConfig struct {
XPaddingBytes *Int32Range `json:"xPaddingBytes"`
Xmux Xmux `json:"xmux"`
DownloadSettings *StreamConfig `json:"downloadSettings"`
Mode string `json:"mode"`
}
type Xmux struct {
@ -289,6 +290,14 @@ func (c *SplitHTTPConfig) Build() (proto.Message, error) {
muxProtobuf.CMaxReuseTimes.To = 128
}
switch c.Mode {
case "":
c.Mode = "auto"
case "auto", "packet-up", "stream-up":
default:
return nil, errors.New("unsupported mode: " + c.Mode)
}
config := &splithttp.Config{
Path: c.Path,
Host: c.Host,
@ -299,6 +308,7 @@ func (c *SplitHTTPConfig) Build() (proto.Message, error) {
NoSSEHeader: c.NoSSEHeader,
XPaddingBytes: splithttpNewRandRangeConfig(c.XPaddingBytes),
Xmux: &muxProtobuf,
Mode: c.Mode,
}
var err error
if c.DownloadSettings != nil {

4
transport/internet/splithttp/browser_client.go
View File

@ -14,6 +14,10 @@ import (
// has no fields because everything is global state :O)
type BrowserDialerClient struct{}
func (c *BrowserDialerClient) OpenUpload(ctx context.Context, baseURL string) io.WriteCloser {
panic("not implemented yet")
}
func (c *BrowserDialerClient) OpenDownload(ctx context.Context, baseURL string) (io.ReadCloser, gonet.Addr, gonet.Addr, error) {
conn, err := browser_dialer.DialGet(baseURL)
dummyAddr := &gonet.IPAddr{}

12
transport/internet/splithttp/client.go
View File

@ -25,6 +25,10 @@ type DialerClient interface {
// (ctx, baseURL) -> (downloadReader, remoteAddr, localAddr)
// baseURL already contains sessionId
OpenDownload(context.Context, string) (io.ReadCloser, net.Addr, net.Addr, error)
// (ctx, baseURL) -> uploadWriter
// baseURL already contains sessionId
OpenUpload(context.Context, string) io.WriteCloser
}
// implements splithttp.DialerClient in terms of direct network connections
@ -38,6 +42,14 @@ type DefaultDialerClient struct {
dialUploadConn func(ctxInner context.Context) (net.Conn, error)
}
func (c *DefaultDialerClient) OpenUpload(ctx context.Context, baseURL string) io.WriteCloser {
reader, writer := io.Pipe()
req, _ := http.NewRequestWithContext(ctx, "POST", baseURL, reader)
req.Header = c.transportConfig.GetRequestHeader()
go c.client.Do(req)
return writer
}
func (c *DefaultDialerClient) OpenDownload(ctx context.Context, baseURL string) (io.ReadCloser, gonet.Addr, gonet.Addr, error) {
var remoteAddr gonet.Addr
var localAddr gonet.Addr

73
transport/internet/splithttp/config.pb.go
View File

@ -36,6 +36,7 @@ type Config struct {
XPaddingBytes *RandRangeConfig `protobuf:"bytes,8,opt,name=xPaddingBytes,proto3" json:"xPaddingBytes,omitempty"`
Xmux *Multiplexing `protobuf:"bytes,9,opt,name=xmux,proto3" json:"xmux,omitempty"`
DownloadSettings *internet.StreamConfig `protobuf:"bytes,10,opt,name=downloadSettings,proto3" json:"downloadSettings,omitempty"`
Mode string `protobuf:"bytes,11,opt,name=mode,proto3" json:"mode,omitempty"`
}
func (x *Config) Reset() {
@ -138,6 +139,13 @@ func (x *Config) GetDownloadSettings() *internet.StreamConfig {
return nil
}
func (x *Config) GetMode() string {
if x != nil {
return x.Mode
}
return ""
}
type RandRangeConfig struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -270,7 +278,7 @@ var file_transport_internet_splithttp_config_proto_rawDesc = []byte{
0x72, 0x6e, 0x65, 0x74, 0x2e, 0x73, 0x70, 0x6c, 0x69, 0x74, 0x68, 0x74, 0x74, 0x70, 0x1a, 0x1f,
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@ -314,47 +322,48 @@ var file_transport_internet_splithttp_config_proto_rawDesc = []byte{
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}
var (

1
transport/internet/splithttp/config.proto
View File

@ -19,6 +19,7 @@ message Config {
RandRangeConfig xPaddingBytes = 8;
Multiplexing xmux = 9;
xray.transport.internet.StreamConfig downloadSettings = 10;
string mode = 11;
}
message RandRangeConfig {

84
transport/internet/splithttp/dialer.go
View File

@ -254,9 +254,9 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
httpClient, muxRes := getHTTPClient(ctx, dest, streamSettings)
var httpClient2 DialerClient
httpClient2 := httpClient
requestURL2 := requestURL
var muxRes2 *muxResource
var requestURL2 url.URL
if transportConfiguration.DownloadSettings != nil {
globalDialerAccess.Lock()
if streamSettings.DownloadSettings == nil {
@ -279,11 +279,10 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
requestURL2.RawQuery = config2.GetNormalizedQuery()
}
maxUploadSize := scMaxEachPostBytes.roll()
// WithSizeLimit(0) will still allow single bytes to pass, and a lot of
// code relies on this behavior. Subtract 1 so that together with
// uploadWriter wrapper, exact size limits can be enforced
uploadPipeReader, uploadPipeWriter := pipe.New(pipe.WithSizeLimit(maxUploadSize - 1))
reader, remoteAddr, localAddr, err := httpClient2.OpenDownload(context.WithoutCancel(ctx), requestURL2.String())
if err != nil {
return nil, err
}
if muxRes != nil {
muxRes.OpenRequests.Add(1)
@ -291,15 +290,48 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
if muxRes2 != nil {
muxRes2.OpenRequests.Add(1)
}
closed := false
conn := splitConn{
writer: nil,
reader: reader,
remoteAddr: remoteAddr,
localAddr: localAddr,
onClose: func() {
if closed {
return
}
closed = true
if muxRes != nil {
muxRes.OpenRequests.Add(-1)
}
if muxRes2 != nil {
muxRes2.OpenRequests.Add(-1)
}
},
}
mode := transportConfiguration.Mode
if mode == "auto" && realityConfig != nil {
mode = "stream-up"
}
if mode == "stream-up" {
conn.writer = httpClient.OpenUpload(ctx, requestURL.String())
return stat.Connection(&conn), nil
}
maxUploadSize := scMaxEachPostBytes.roll()
// WithSizeLimit(0) will still allow single bytes to pass, and a lot of
// code relies on this behavior. Subtract 1 so that together with
// uploadWriter wrapper, exact size limits can be enforced
uploadPipeReader, uploadPipeWriter := pipe.New(pipe.WithSizeLimit(maxUploadSize - 1))
conn.writer = uploadWriter{
uploadPipeWriter,
maxUploadSize,
}
go func() {
if muxRes != nil {
defer muxRes.OpenRequests.Add(-1)
}
if muxRes2 != nil {
defer muxRes2.OpenRequests.Add(-1)
}
requestsLimiter := semaphore.New(int(scMaxConcurrentPosts.roll()))
var requestCounter int64
@ -352,30 +384,6 @@ func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.Me
}
}()
httpClient3 := httpClient
requestURL3 := requestURL
if httpClient2 != nil {
httpClient3 = httpClient2
requestURL3 = requestURL2
}
reader, remoteAddr, localAddr, err := httpClient3.OpenDownload(context.WithoutCancel(ctx), requestURL3.String())
if err != nil {
return nil, err
}
writer := uploadWriter{
uploadPipeWriter,
maxUploadSize,
}
conn := splitConn{
writer: writer,
reader: reader,
remoteAddr: remoteAddr,
localAddr: localAddr,
}
return stat.Connection(&conn), nil
}

33
transport/internet/splithttp/hub.go
View File

@ -100,6 +100,8 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
return
}
h.config.WriteResponseHeader(writer)
sessionId := ""
subpath := strings.Split(request.URL.Path[len(h.path):], "/")
if len(subpath) > 0 {
@ -134,7 +136,26 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
}
if seq == "" {
errors.LogInfo(context.Background(), "no seq on request:", request.URL.Path)
if h.config.Mode == "packet-up" {
errors.LogInfo(context.Background(), "stream-up mode is not allowed")
writer.WriteHeader(http.StatusBadRequest)
return
}
err = currentSession.uploadQueue.Push(Packet{
Reader: request.Body,
})
if err != nil {
errors.LogInfoInner(context.Background(), err, "failed to upload (PushReader)")
writer.WriteHeader(http.StatusConflict)
} else {
writer.WriteHeader(http.StatusOK)
<-request.Context().Done()
}
return
}
if h.config.Mode == "stream-up" {
errors.LogInfo(context.Background(), "packet-up mode is not allowed")
writer.WriteHeader(http.StatusBadRequest)
return
}
@ -148,14 +169,14 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
}
if err != nil {
errors.LogInfoInner(context.Background(), err, "failed to upload")
errors.LogInfoInner(context.Background(), err, "failed to upload (ReadAll)")
writer.WriteHeader(http.StatusInternalServerError)
return
}
seqInt, err := strconv.ParseUint(seq, 10, 64)
if err != nil {
errors.LogInfoInner(context.Background(), err, "failed to upload")
errors.LogInfoInner(context.Background(), err, "failed to upload (ParseUint)")
writer.WriteHeader(http.StatusInternalServerError)
return
}
@ -166,12 +187,11 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
})
if err != nil {
errors.LogInfoInner(context.Background(), err, "failed to upload")
errors.LogInfoInner(context.Background(), err, "failed to upload (PushPayload)")
writer.WriteHeader(http.StatusInternalServerError)
return
}
h.config.WriteResponseHeader(writer)
writer.WriteHeader(http.StatusOK)
} else if request.Method == "GET" {
responseFlusher, ok := writer.(http.Flusher)
@ -195,8 +215,6 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
writer.Header().Set("Content-Type", "text/event-stream")
}
h.config.WriteResponseHeader(writer)
writer.WriteHeader(http.StatusOK)
responseFlusher.Flush()
@ -223,6 +241,7 @@ func (h *requestHandler) ServeHTTP(writer http.ResponseWriter, request *http.Req
conn.Close()
} else {
errors.LogInfo(context.Background(), "unsupported method: ", request.Method)
writer.WriteHeader(http.StatusMethodNotAllowed)
}
}

24
transport/internet/splithttp/upload_queue.go
View File

@ -6,17 +6,20 @@ package splithttp
import (
"container/heap"
"io"
"runtime"
"sync"
"github.com/xtls/xray-core/common/errors"
)
type Packet struct {
Reader io.ReadCloser
Payload []byte
Seq uint64
}
type uploadQueue struct {
reader io.ReadCloser
pushedPackets chan Packet
writeCloseMutex sync.Mutex
heap uploadHeap
@ -39,7 +42,16 @@ func (h *uploadQueue) Push(p Packet) error {
h.writeCloseMutex.Lock()
defer h.writeCloseMutex.Unlock()
runtime.Gosched()
if h.reader != nil && p.Reader != nil {
p.Reader.Close()
return errors.New("h.reader already exists")
}
if h.closed {
if p.Reader != nil {
p.Reader.Close()
}
return errors.New("splithttp packet queue closed")
}
@ -55,10 +67,18 @@ func (h *uploadQueue) Close() error {
h.closed = true
close(h.pushedPackets)
}
runtime.Gosched()
if h.reader != nil {
return h.reader.Close()
}
return nil
}
func (h *uploadQueue) Read(b []byte) (int, error) {
if h.reader != nil {
return h.reader.Read(b)
}
if h.closed {
return 0, io.EOF
}
@ -68,6 +88,10 @@ func (h *uploadQueue) Read(b []byte) (int, error) {
if !more {
return 0, io.EOF
}
if packet.Reader != nil {
h.reader = packet.Reader
return h.reader.Read(b)
}
heap.Push(&h.heap, packet)
}