diff --git a/server.go b/server.go
index 0334771..1b9cd7f 100644
--- a/server.go
+++ b/server.go
@@ -55,6 +55,7 @@ func (s *Server) Connect(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.WriteHeader(http.StatusOK)
+
 	hijacker, ok := w.(http.Hijacker)
 	if !ok {
 		s.Error(w, errors.New("hijack not available"))
@@ -67,21 +68,8 @@ func (s *Server) Connect(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	xfer := func(dst io.WriteCloser, src io.ReadCloser) {
-		defer dst.Close()
-		defer src.Close()
-		io.Copy(
-			throttledWriter{
-				ctx:     context.Background(),
-				w:       dst,
-				limiter: s.limiter,
-			},
-			src,
-		)
-	}
-
-	go xfer(dest, client)
-	go xfer(client, dest)
+	go s.xfer(r.Context(), dest, client)
+	go s.xfer(r.Context(), client, dest)
 }
 
 func (s *Server) Serve(w http.ResponseWriter, r *http.Request) {
@@ -98,12 +86,17 @@ func (s *Server) Serve(w http.ResponseWriter, r *http.Request) {
 			w.Header().Add(k, s)
 		}
 	}
+	s.xfer(r.Context(), w, resp.Body)
+}
+
+func (s *Server) xfer(ctx context.Context, w io.Writer, r io.ReadCloser) {
+	defer r.Close()
 	io.Copy(
 		throttledWriter{
-			ctx:     r.Context(),
+			ctx:     ctx,
 			w:       w,
 			limiter: s.limiter,
 		},
-		resp.Body,
+		r,
 	)
 }