f.modifyRequest(req, inReq.URL)
		},
		BufferPool:    newBufPool(128 << 10),
		Transport:     f.RoundTripper,
		FlushInterval: defaultFlushInterval,
		ErrorHandler:  f.customErrHandler,
	}

	if f.ErrorHandler != nil {
		revproxy.ErrorHandler = f.ErrorHandler
	}

	revproxy.ServeHTTP(w, outReq)
}

// customErrHandler is originally implemented to avoid having the following error
//

    """

    @websocket_middleware
    async def errorhandler(websocket: WebSocket, call_next):
        try:
            return await call_next()
        except Exception as e:
            await websocket.close(code=status.WS_1006_ABNORMAL_CLOSURE, reason=repr(e))

    myapp = make_app(middleware=[Middleware(errorhandler)])
    client = TestClient(myapp)
    with pytest.raises(WebSocketDisconnect) as e:

	// proxying the request to another node.
	for k := range w.Header() {
		w.Header().Del(k)
	}

	f := handlers.NewForwarder(&handlers.Forwarder{
		PassHost:     true,
		RoundTripper: ep.Transport,
		ErrorHandler: func(w http.ResponseWriter, r *http.Request, err error) {
			success = false
			if err != nil && !errors.Is(err, context.Canceled) {
				replLogIf(GlobalContext, err)
			}
		},
	})

pkg net/http/httptrace, type ClientTrace struct, WroteHeaderField func(string, []string)
pkg net/http/httputil, type ReverseProxy struct, ErrorHandler func(http.ResponseWriter, *http.Request, error)
pkg os, const ModeIrregular = 524288
pkg os, const ModeIrregular FileMode
pkg os, const ModeType = 2399666176
pkg os, func UserCacheDir() (string, error)

pkg go/scanner, method (*ErrorList) Add(token.Position, string)
pkg go/scanner, method (*ErrorList) RemoveMultiples()
pkg go/scanner, method (*ErrorList) Reset()
pkg go/scanner, method (*Scanner) Init(*token.File, []uint8, ErrorHandler, Mode)
pkg go/scanner, method (*Scanner) Scan() (token.Pos, token.Token, string)
pkg go/scanner, method (Error) Error() string
pkg go/scanner, method (ErrorList) Err() error