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Add fallback support for v2ray transport

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This commit is contained in:
世界
2023-02-13 05:53:03 +08:00
parent 0391deb657
commit bbe10ad8d6
13 changed files with 132 additions and 85 deletions
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30
transport/v2raywebsocket/server.go
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@@ -12,6 +12,7 @@ import (
"github.com/sagernet/sing-box/common/tls"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/v2rayhttp"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
@@ -26,19 +27,17 @@ var _ adapter.V2RayServerTransport = (*Server)(nil)
type Server struct {
ctx context.Context
handler N.TCPConnectionHandler
errorHandler E.Handler
handler adapter.V2RayServerTransportHandler
httpServer *http.Server
path string
maxEarlyData uint32
earlyDataHeaderName string
}
func NewServer(ctx context.Context, options option.V2RayWebsocketOptions, tlsConfig tls.ServerConfig, handler N.TCPConnectionHandler, errorHandler E.Handler) (*Server, error) {
func NewServer(ctx context.Context, options option.V2RayWebsocketOptions, tlsConfig tls.ServerConfig, handler adapter.V2RayServerTransportHandler) (*Server, error) {
server := &Server{
ctx: ctx,
handler: handler,
errorHandler: errorHandler,
path: options.Path,
maxEarlyData: options.MaxEarlyData,
earlyDataHeaderName: options.EarlyDataHeaderName,
@@ -71,8 +70,7 @@ var upgrader = websocket.Upgrader{
func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
if s.maxEarlyData == 0 || s.earlyDataHeaderName != "" {
if request.URL.Path != s.path {
writer.WriteHeader(http.StatusNotFound)
s.badRequest(request, E.New("bad path: ", request.URL.Path))
s.fallbackRequest(request.Context(), writer, request, http.StatusNotFound, E.New("bad path: ", request.URL.Path))
return
}
}
@@ -86,8 +84,7 @@ func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
earlyDataStr := request.URL.RequestURI()[len(s.path):]
earlyData, err = base64.RawURLEncoding.DecodeString(earlyDataStr)
} else {
writer.WriteHeader(http.StatusNotFound)
s.badRequest(request, E.New("bad path: ", request.URL.Path))
s.fallbackRequest(request.Context(), writer, request, http.StatusNotFound, E.New("bad path: ", request.URL.Path))
return
}
} else {
@@ -97,13 +94,12 @@ func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
}
}
if err != nil {
writer.WriteHeader(http.StatusBadRequest)
s.badRequest(request, E.Cause(err, "decode early data"))
s.fallbackRequest(request.Context(), writer, request, http.StatusBadRequest, E.Cause(err, "decode early data"))
return
}
wsConn, err := upgrader.Upgrade(writer, request, nil)
if err != nil {
s.badRequest(request, E.Cause(err, "upgrade websocket connection"))
s.fallbackRequest(request.Context(), writer, request, http.StatusBadRequest, E.Cause(err, "upgrade websocket connection"))
return
}
var metadata M.Metadata
@@ -115,8 +111,16 @@ func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
s.handler.NewConnection(request.Context(), conn, metadata)
}
func (s *Server) badRequest(request *http.Request, err error) {
s.errorHandler.NewError(request.Context(), E.Cause(err, "process connection from ", request.RemoteAddr))
func (s *Server) fallbackRequest(ctx context.Context, writer http.ResponseWriter, request *http.Request, statusCode int, err error) {
conn := v2rayhttp.NewHTTPConn(request.Body, writer)
fErr := s.handler.FallbackConnection(ctx, &conn, M.Metadata{})
if fErr == nil {
return
} else if fErr == os.ErrInvalid {
fErr = nil
}
writer.WriteHeader(statusCode)
s.handler.NewError(request.Context(), E.Cause(E.Errors(err, E.Cause(fErr, "fallback connection")), "process connection from ", request.RemoteAddr))
}
func (s *Server) Network() []string {