Chrome 在 3 秒后取消 URL_REQUEST

Question

Chrome 在 3 秒后取消 URL_REQUEST

Bed*_*u33 11 google-chrome reload stalled

好吧，这是一个奇怪的事情。

我正在开发一个 php 脚本，它可以根据请求执行大量工作（图像处理）。因此，这并不罕见，它会在 10 秒内发出响应，有时长达 30 秒：这是一个很长的脚本，这对于下一部分很重要。

在记录图像处理代码时，我注意到只应调用一次的进程被调用了两次。

原因：Chrome 在 3 秒后取消第一个请求，然后再次请求相同的 URL。

顺序始终相同。

请求的网址
3秒后取消
使用http方案自动重新加载
307 由于我们服务器上的 HSTS
使用 https 再次请求 URL
这个加载正确

已取消的请求在“计时”选项卡中显示为“已停止”。

这仅发生在 Chrome 中（对我来说是 92.0.4515.107）。我在 Firefox 中没有看到这种行为。

现在如何才能重现这种巫术呢？很简单，我可以在 2 个不同提供商（GCE 和 OVH）的 2 个不同服务器上进行复制，并且它与对此 URL 的初始请求的持续时间有一个奇怪的链接。

在您的网络服务器上创建一个新的 php 脚本，仅包含

<?php sleep(10); echo 'Done'; ?>
在 Chrome 中调用您的脚本 URL
第一次调用就会成功
但接下来的所有调用肯定会触发“序列”

通过检查 Chrome 日志，我认为这与 HTTP2_SESSION 有链接

t=235805 [st=   5]     +HTTP_TRANSACTION_SEND_REQUEST  [dt=1]
t=235806 [st=   6]        HTTP_TRANSACTION_HTTP2_SEND_REQUEST_HEADERS
                          --> :method: GET
                              :authority: my.server.com
                              :scheme: https
                              :path: /admin/ot/test1.php
                              pragma: no-cache
                              cache-control: no-cache
                              authorization: [38 bytes were stripped]
                              sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Google Chrome";v="92"
                              sec-ch-ua-mobile: ?0
                              upgrade-insecure-requests: 1
                              user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36
                              accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
                              sec-fetch-site: none
                              sec-fetch-mode: navigate
                              sec-fetch-user: ?1
                              sec-fetch-dest: document
                              accept-encoding: gzip, deflate, br
                              accept-language: fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7
                              cookie: [409 bytes were stripped]
t=235806 [st=   6]     -HTTP_TRANSACTION_SEND_REQUEST
t=235806 [st=   6]     +HTTP_TRANSACTION_READ_HEADERS  [dt=3012]
t=238818 [st=3018]        CANCELLED
t=238818 [st=3018] -REQUEST_ALIVE

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关于上面的URL_REQUEST，我们了解的不多。3 秒后我们才看到“已取消”。

但是 HTTP2_SESSION 显示了一个奇怪的错误：

27185: HTTP2_SESSION
my.server.com:443 (DIRECT)
Start Time: 2021-07-22 17:13:09.460

t=222444 [st=    0] +HTTP2_SESSION  [dt=28616+]
                     --> host = "my.server.com:443"
                     --> proxy = "DIRECT"
t=222444 [st=    0]    HTTP2_SESSION_INITIALIZED
                       --> protocol = "h2"
                       --> source_dependency = 27181 (SOCKET)
t=222445 [st=    1]    HTTP2_SESSION_SEND_SETTINGS
                       --> settings = ["[id:1 (SETTINGS_HEADER_TABLE_SIZE) value:65536]","[id:3 (SETTINGS_MAX_CONCURRENT_STREAMS) value:1000]","[id:4 (SETTINGS_INITIAL_WINDOW_SIZE) value:6291456]","[id:6 (SETTINGS_MAX_HEADER_LIST_SIZE) value:262144]"]
t=222445 [st=    1]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 15663105
                       --> window_size = 15728640
t=222445 [st=    1]    HTTP2_SESSION_SEND_WINDOW_UPDATE
                       --> delta = 15663105
                       --> stream_id = 0
t=222446 [st=    2]    HTTP2_SESSION_SEND_HEADERS
                       --> exclusive = true
                       --> fin = true
                       --> has_priority = true
                       --> :method: GET
                           :authority: my.server.com
                           :scheme: https
                           :path: /admin/ot/test1.php
                           pragma: no-cache
                           cache-control: no-cache
                           authorization: [38 bytes were stripped]
                           sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Google Chrome";v="92"
                           sec-ch-ua-mobile: ?0
                           upgrade-insecure-requests: 1
                           user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36
                           accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
                           sec-fetch-site: none
                           sec-fetch-mode: navigate
                           sec-fetch-user: ?1
                           sec-fetch-dest: document
                           accept-encoding: gzip, deflate, br
                           accept-language: fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7
                           cookie: [409 bytes were stripped]
                       --> parent_stream_id = 0
                       --> source_dependency = 27179 (HTTP_STREAM_JOB)
                       --> stream_id = 1
                       --> weight = 256
t=222471 [st=   27]    HTTP2_SESSION_RECV_SETTINGS
t=222471 [st=   27]    HTTP2_SESSION_SEND_SETTINGS_ACK
t=222471 [st=   27]    HTTP2_SESSION_RECV_SETTING
                       --> id = "3 (SETTINGS_MAX_CONCURRENT_STREAMS)"
                       --> value = 100
t=222471 [st=   27]    HTTP2_SESSION_UPDATE_STREAMS_SEND_WINDOW_SIZE
                       --> delta_window_size = 983041
t=222471 [st=   27]    HTTP2_SESSION_RECV_SETTING
                       --> id = "4 (SETTINGS_INITIAL_WINDOW_SIZE)"
                       --> value = 1048576
t=222471 [st=   27]    HTTP2_SESSION_RECV_SETTING
                       --> id = "6 (SETTINGS_MAX_HEADER_LIST_SIZE)"
                       --> value = 65536
t=222471 [st=   27]    HTTP2_SESSION_RECV_WINDOW_UPDATE
                       --> delta = 983041
                       --> stream_id = 0
t=222471 [st=   27]    HTTP2_SESSION_UPDATE_SEND_WINDOW
                       --> delta = 983041
                       --> window_size = 1048576
t=222471 [st=   27]    HTTP2_SESSION_RECV_SETTINGS_ACK
t=232550 [st=10106]    HTTP2_SESSION_RECV_HEADERS
                       --> fin = false
                       --> :status: 200
                           date: Thu, 22 Jul 2021 15:13:09 GMT
                           vary: Accept-Encoding
                           content-encoding: gzip
                           strict-transport-security: max-age=63072000; includeSubDomains; preload
                           x-ua-compatible: IE=Edge
                           x-frame-options: sameorigin
                           x-content-type-options: nosniff
                           x-xss-protection: 1; mode=block
                           content-length: 24
                           content-type: text/html; charset=CP1252
                           cache-control: 
                           age: 0
                           x-cache: NOT CACHABLE
                           accept-ranges: bytes
                           via: 1.1 google
                           alt-svc: clear
                       --> stream_id = 1
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -1
                       --> window_size = 15728639
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 1
                       --> window_size = 15728640
t=232550 [st=10106]    HTTP2_SESSION_RECV_DATA
                       --> fin = false
                       --> size = 24
                       --> stream_id = 1
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -24
                       --> window_size = 15728616
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -110
                       --> window_size = 15728506
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 110
                       --> window_size = 15728616
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -1
                       --> window_size = 15728615
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 1
                       --> window_size = 15728616
t=232550 [st=10106]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -71
                       --> window_size = 15728545
t=232551 [st=10107]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 71
                       --> window_size = 15728616
t=232551 [st=10107]    HTTP2_SESSION_RECV_DATA
                       --> fin = true
                       --> size = 0
                       --> stream_id = 1
t=232551 [st=10107]    HTTP2_SESSION_PING
                       --> is_ack = false
                       --> type = "received"
                       --> unique_id = 0
t=232551 [st=10107]    HTTP2_SESSION_PING
                       --> is_ack = true
                       --> type = "sent"
                       --> unique_id = 0
t=232552 [st=10108]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 24
                       --> window_size = 15728640
t=235806 [st=13362]    HTTP2_SESSION_SEND_HEADERS
                       --> exclusive = true
                       --> fin = true
                       --> has_priority = true
                       --> :method: GET
                           :authority: my.server.com
                           :scheme: https
                           :path: /admin/ot/test1.php
                           pragma: no-cache
                           cache-control: no-cache
                           authorization: [38 bytes were stripped]
                           sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Google Chrome";v="92"
                           sec-ch-ua-mobile: ?0
                           upgrade-insecure-requests: 1
                           user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36
                           accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
                           sec-fetch-site: none
                           sec-fetch-mode: navigate
                           sec-fetch-user: ?1
                           sec-fetch-dest: document
                           accept-encoding: gzip, deflate, br
                           accept-language: fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7
                           cookie: [409 bytes were stripped]
                       --> parent_stream_id = 0
                       --> source_dependency = 27212 (HTTP_STREAM_JOB)
                       --> stream_id = 3
                       --> weight = 256
t=238818 [st=16374]    HTTP2_SESSION_SEND_RST_STREAM
                       --> description = ""
                       --> error_code = "8 (CANCEL)"
                       --> stream_id = 3
t=238846 [st=16402]    HTTP2_SESSION_SEND_HEADERS
                       --> exclusive = true
                       --> fin = true
                       --> has_priority = true
                       --> :method: GET
                           :authority: my.server.com
                           :scheme: https
                           :path: /admin/ot/test1.php
                           pragma: no-cache
                           cache-control: no-cache
                           authorization: [38 bytes were stripped]
                           upgrade-insecure-requests: 1
                           user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36
                           accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
                           sec-fetch-site: none
                           sec-fetch-mode: navigate
                           sec-fetch-user: ?1
                           sec-fetch-dest: document
                           sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Google Chrome";v="92"
                           sec-ch-ua-mobile: ?0
                           accept-encoding: gzip, deflate, br
                           accept-language: fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7
                           cookie: [409 bytes were stripped]
                       --> parent_stream_id = 0
                       --> source_dependency = 27225 (HTTP_STREAM_JOB)
                       --> stream_id = 5
                       --> weight = 256
t=249924 [st=27480]    HTTP2_SESSION_RECV_HEADERS
                       --> fin = false
                       --> :status: 200
                           date: Thu, 22 Jul 2021 15:13:25 GMT
                           vary: Accept-Encoding
                           content-encoding: gzip
                           strict-transport-security: max-age=63072000; includeSubDomains; preload
                           x-ua-compatible: IE=Edge
                           x-frame-options: sameorigin
                           x-content-type-options: nosniff
                           x-xss-protection: 1; mode=block
                           content-length: 24
                           content-type: text/html; charset=CP1252
                           cache-control: 
                           age: 0
                           x-cache: NOT CACHABLE
                           accept-ranges: bytes
                           via: 1.1 google
                           alt-svc: clear
                       --> stream_id = 5
t=249924 [st=27480]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -1
                       --> window_size = 15728639
t=249924 [st=27480]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 1
                       --> window_size = 15728640
t=249924 [st=27480]    HTTP2_SESSION_RECV_DATA
                       --> fin = false
                       --> size = 24
                       --> stream_id = 5
t=249924 [st=27480]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -24
                       --> window_size = 15728616
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -94
                       --> window_size = 15728522
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 94
                       --> window_size = 15728616
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -1
                       --> window_size = 15728615
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 1
                       --> window_size = 15728616
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = -104
                       --> window_size = 15728512
t=249925 [st=27481]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 104
                       --> window_size = 15728616
t=249925 [st=27481]    HTTP2_SESSION_RECV_DATA
                       --> fin = true
                       --> size = 0
                       --> stream_id = 5
t=249925 [st=27481]    HTTP2_SESSION_PING
                       --> is_ack = false
                       --> type = "received"
                       --> unique_id = 2
t=249925 [st=27481]    HTTP2_SESSION_PING
                       --> is_ack = true
                       --> type = "sent"
                       --> unique_id = 2
t=249927 [st=27483]    HTTP2_SESSION_UPDATE_RECV_WINDOW
                       --> delta = 24
                       --> window_size = 15728640

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演练：

初始请求（有效的请求）从 st=0 开始，到 st=10106 结束（休眠 10 秒）
第二个请求（自动取消的请求）从 st=13362 开始，以 st=16374 结束（3 秒后），如下所示

t=238818 [st=16374]    HTTP2_SESSION_SEND_RST_STREAM
                       --> description = ""
                       --> error_code = "8 (CANCEL)"
                       --> stream_id = 3

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然后请求在 st=16402 处重新加载，最后在 st=27480 处返回，并有 10 秒的睡眠延迟

老实说，我不知道该怎么办。这可以很容易地重现，但我不明白为什么会发生。

Chrome 在我的公司中主要用于我们的内部工具，因此我发现它会出于神秘原因连续两次重新加载繁重的处理 URL。

任何帮助将不胜感激。

哦，我确实禁用了我拥有的所有扩展。这没有帮助。无论如何，我在 Chrome 日志中没有看到任何有关扩展程序干预的内容。

Answer 1

小智 6

我认为这个问题可以在任何响应延迟超过 3 秒的域上以及服务器端的任何技术上重现。我认为这是一个 chrome 问题。我使用 ASP.net MVC 和 AWS Beanstalk 托管复制了它。我还在https://example.com/上以不同的方式复制了它当您限制连接以获得较慢的响应时间时，

重现它（在 Chrome 版本 92.0.4515.159（官方版本）（64 位）上）：

打开开发工具并添加非常慢的网络限制配置文件，如下所示
通过粘贴转到网址： https: //example.com/ -> 这应该可以工作
按 F5 刷新页面 -> 这也应该有效
现在，非常重要的是，只需单击地址栏两次，您就可以看到：然后按回车键。现在 chrome 的行为有所不同，它首先尝试 https url，如果 3 秒内没有响应，它会重定向到 http。我正在谈论的就是被取消的请求。

也许这会帮助某人解决问题。

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