private void sendErrorMsg(ChannelHandlerContext ctx,
            DataProxyErrCode errCodeObj, String errMsg, String callback) {
        sendResponse(ctx, errCodeObj.getErrCode(), errMsg, true, callback);
    }
Get attributes from decoder

@param decoder the decode object
@param reqAttrs the attributes
inlong-dataproxy/dataproxy-source/src/main/java/org/apache/inlong/dataproxy/source/httpMsg/HttpMessageHandler.java