mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 10:37:51 +00:00
107 lines
2.9 KiB
Go
107 lines
2.9 KiB
Go
package v2raygrpclite
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/common/tls"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing/common"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
sHttp "github.com/sagernet/sing/protocol/http"
|
|
|
|
"golang.org/x/net/http2"
|
|
)
|
|
|
|
var _ adapter.V2RayServerTransport = (*Server)(nil)
|
|
|
|
type Server struct {
|
|
handler N.TCPConnectionHandler
|
|
errorHandler E.Handler
|
|
httpServer *http.Server
|
|
path string
|
|
}
|
|
|
|
func (s *Server) Network() []string {
|
|
return []string{N.NetworkTCP}
|
|
}
|
|
|
|
func NewServer(ctx context.Context, options option.V2RayGRPCOptions, tlsConfig tls.Config, handler N.TCPConnectionHandler, errorHandler E.Handler) (*Server, error) {
|
|
server := &Server{
|
|
handler: handler,
|
|
errorHandler: errorHandler,
|
|
path: fmt.Sprintf("/%s/Tun", url.QueryEscape(options.ServiceName)),
|
|
}
|
|
server.httpServer = &http.Server{
|
|
Handler: server,
|
|
}
|
|
if tlsConfig != nil {
|
|
stdConfig, err := tlsConfig.Config()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if !common.Contains(stdConfig.NextProtos, "h2") {
|
|
stdConfig.NextProtos = append(stdConfig.NextProtos, "h2")
|
|
}
|
|
server.httpServer.TLSConfig = stdConfig
|
|
}
|
|
return server, nil
|
|
}
|
|
|
|
func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
|
|
if request.URL.Path != s.path {
|
|
writer.WriteHeader(http.StatusNotFound)
|
|
s.badRequest(request, E.New("bad path: ", request.URL.Path))
|
|
return
|
|
}
|
|
if request.Method != http.MethodPost {
|
|
writer.WriteHeader(http.StatusNotFound)
|
|
s.badRequest(request, E.New("bad method: ", request.Method))
|
|
return
|
|
}
|
|
if ct := request.Header.Get("Content-Type"); !strings.HasPrefix(ct, "application/grpc") {
|
|
writer.WriteHeader(http.StatusNotFound)
|
|
s.badRequest(request, E.New("bad content type: ", ct))
|
|
return
|
|
}
|
|
writer.Header().Set("Content-Type", "application/grpc")
|
|
writer.Header().Set("TE", "trailers")
|
|
writer.WriteHeader(http.StatusOK)
|
|
var metadata M.Metadata
|
|
metadata.Source = sHttp.SourceAddress(request)
|
|
conn := newGunConn(request.Body, writer, writer.(http.Flusher))
|
|
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) Serve(listener net.Listener) error {
|
|
if s.httpServer.TLSConfig == nil {
|
|
return s.httpServer.Serve(listener)
|
|
} else {
|
|
err := http2.ConfigureServer(s.httpServer, &http2.Server{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return s.httpServer.ServeTLS(listener, "", "")
|
|
}
|
|
}
|
|
|
|
func (s *Server) ServePacket(listener net.PacketConn) error {
|
|
return os.ErrInvalid
|
|
}
|
|
|
|
func (s *Server) Close() error {
|
|
return common.Close(common.PtrOrNil(s.httpServer))
|
|
}
|