在scrapy内的异步方法中进行内联请求时，无法使用‘headers`或`dont_filter=True`

yield scrapy.Request(url, headers={'User-Agent': 'Mozilla/5.0'})

yield scrapy.Request(url, dont_filter=True)

def parse(self, response):
    headers = {'User-Agent': 'Mozilla/5.0'}
    yield scrapy.Request(url, meta={'headers': headers}, callback=self.parse_inline)

def parse_inline(self, response):
    headers = response.meta.get('headers')
    # 使用headers进行内联请求

def parse(self, response):
    yield scrapy.Request(url, meta={'dont_filter_inline': True}, callback=self.parse_inline)

def parse_inline(self, response):
    if 'dont_filter_inline' in response.meta:
        # 跳过去重
        pass
    else:
        # 不跳过去重
        pass