Chrome 控制台 Network 显示 Provisional headers are shown 是什么原因 - V2EX
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mytry

Chrome 控制台 Network 显示 Provisional headers are shown 是什么原因

  •  
  •   mytry Dec 4, 2018 9384 views
    This topic created in 2700 days ago, the information mentioned may be changed or developed.

    跨源请求的图片会显示这个,但是请求是发送出去的:

    ttt.png

    ttt2.png

    同源就不会有:

    ttt3.png

    8 replies    2018-12-04 18:05:09 +08:00
    yusip
        1
    yusip  
       Dec 4, 2018
    response header 的 Access-Control-Allow-Origin 配了么
    lhx2008
        2
    lhx2008  
       Dec 4, 2018 via Android
    一般这个头是设置了 max-age 之后,本地缓存了,导致根本没有发请求到服务器,所以只显示之前的请求
    lhx2008
        3
    lhx2008  
       Dec 4, 2018 via Android
    试试 ctrl + f5 看看
    Trim21
        4
    Trim21  
       Dec 4, 2018
    @lhx2008 #2 不是这个原因, 我使用了清空缓存况且硬性重新加载, 还有部分请求也会显示这个...
    mytry
        5
    mytry  
    OP
       Dec 4, 2018
    @lhx2008 但是勾上了 disable cache 了
    liuxu
        6
    liuxu  
       Dec 4, 2018
    善用搜索,v2ex 以前就有这帖子

    t/337754
    lhx2008
        7
    lhx2008  
       Dec 4, 2018
    @Trim21 我刚刚试了下,好像也有这个问题,很多网站的 F12 都是 Provisional headers are shown,之前我记得应该是没有这么多的。不知道是 Chrome 70 的问题还是 HTTP/2 的问题
    lhx2008
        8
    lhx2008  
       Dec 4, 2018
    我发了个帖子,发现这个问题可以稳定出现: t/514283
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