Function httpWriteResponseError

http.go:356–397

(bw *bufio.Writer, err error, code int, header HandshakeHeaderFunc)

}

func httpWriteResponseError(bw *bufio.Writer, err error, code int, header HandshakeHeaderFunc) {
	switch code {
	case http.StatusBadRequest:
		bw.WriteString(textHeadBadRequest)
	case http.StatusInternalServerError:
		bw.WriteString(textHeadInternalServerError)
	case http.StatusUpgradeRequired:
		bw.WriteString(textHeadUpgradeRequired)
	default:
		writeStatusText(bw, code)
	}

	// Write custom headers.
	if header != nil {
		header(bw)
	}

	switch err {
	case ErrHandshakeBadProtocol:
		bw.WriteString(textTailErrHandshakeBadProtocol)
	case ErrHandshakeBadMethod:
		bw.WriteString(textTailErrHandshakeBadMethod)
	case ErrHandshakeBadHost:
		bw.WriteString(textTailErrHandshakeBadHost)
	case ErrHandshakeBadUpgrade:
		bw.WriteString(textTailErrHandshakeBadUpgrade)
	case ErrHandshakeBadConnection:
		bw.WriteString(textTailErrHandshakeBadConnection)
	case ErrHandshakeBadSecAccept:
		bw.WriteString(textTailErrHandshakeBadSecAccept)
	case ErrHandshakeBadSecKey:
		bw.WriteString(textTailErrHandshakeBadSecKey)
	case ErrHandshakeBadSecVersion:
		bw.WriteString(textTailErrHandshakeBadSecVersion)
	case ErrHandshakeUpgradeRequired:
		bw.WriteString(textTailErrUpgradeRequired)
	case nil:
		bw.WriteString(crlf)
	default:
		writeErrorText(bw, err)
	}
}

func writeStatusText(bw *bufio.Writer, code int) {
	bw.WriteString("HTTP/1.1 ")