Chrome 刚好 3 秒后取消 URL_REQUEST
Chrome cancels URL_REQUEST after exactly 3 seconds
好吧，这很奇怪。
我正在开发一个 php 脚本，该脚本会在请求时执行大量工作（图像处理）。所以这并不罕见，它会在 10 秒内发出响应，有时会长达 30 秒：这是一个很长的脚本，这对下一部分很重要。
在记录图像处理代码时，我注意到应该只调用一次的进程被调用了两次。
原因：Chrome 3 秒后取消第一个请求，然后再次请求相同的 URL。
顺序总是一样的。
- URL 请求
- 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
- URL 再次请求 https
- 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。
这只发生在 Chrome（对我来说是 92.0.4515.107）。我在 Firefox 中没有看到这种行为。
现在如何重现这一巫术？很简单，我可以在 2 个不同的提供商（GCE 和 OVH）上的 2 个不同的服务器上进行复制，并且它有一个奇怪的 link 初始请求的持续时间 URL.
在您的网络服务器上创建一个新的 php 脚本，只包含
<?php sleep(10); echo 'Done'; ?>
在 Chrome
中调用您的脚本 URL
第一次调用会成功
但接下来的所有调用肯定会触发“序列”
通过查看 Chrome 日志，我开始认为这有一个 link 和 HTTP2_SESSION
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
上面的URL_REQUEST，我们学的不多。我们只在 3 秒后看到“CANCELLED”。
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
演练：
- 初始请求（有效的请求）开始于 st=0，结束于 st=10106（睡眠 10 秒）
- 第二个请求（自动取消的请求）从 st=13362 开始，在 st=16374（3 秒后）结束，
t=238818 [st=16374] HTTP2_SESSION_SEND_RST_STREAM
--> description = ""
--> error_code = "8 (CANCEL)"
--> stream_id = 3
- 然后请求在 st=16402 重新加载，最后在 st=27480 返回，并有 10 秒的休眠延迟
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这样。
Chrome 在我的公司主要用于我们的内部工具，所以我发现它由于神秘原因连续 2 次重新加载繁重的处理 URL。
如有任何帮助，我们将不胜感激。
哦，我确实禁用了所有扩展程序。它没有帮助。无论如何，我在 Chrome 日志中没有看到任何关于任何扩展干预的提及。
同样的问题，我用Firefox的时候没有发现这样的问题。一开始怀疑是服务端配置问题。后来发现换了环境问题依旧。最后定位到浏览器端，不知道具体是什么原因
我认为这个问题可以在响应延迟超过 3 秒的任何域和服务器端的任何技术上重现。我想这是一个 chrome 问题。我用 ASP.net MVC 和 AWS Beanstalk 托管复制了它。当您限制连接以获得更慢的响应时间时，我还在 https://example.com/ 上以不同的方式复制了它。
要复制它（在 Chrome 版本 92.0.4515.159（官方构建）（64 位）上）：
- 打开 Dev Tools 并添加 Very Slow Network Throttling Profile 如下
- 通过粘贴转到 url：https://example.com/ -> 这应该有效
- 按 F5 刷新页面 -> 这应该也有效
- 现在，非常重要，只需单击地址栏两次即可看到：
然后按回车键。现在 chrome 的行为有所不同，首先它会尝试 https url，如果 3 秒内没有响应，它会重定向到 http。取消的请求是我正在谈论的那个。
也许这会帮助某人解决问题。
如果您的服务器不支持https，请尝试输入'http://'为每个请求指定协议。否则 Chrome 会自动尝试 https。需要3秒，然后去http.
好吧，这很奇怪。
我正在开发一个 php 脚本，该脚本会在请求时执行大量工作（图像处理）。所以这并不罕见，它会在 10 秒内发出响应，有时会长达 30 秒：这是一个很长的脚本，这对下一部分很重要。
在记录图像处理代码时，我注意到应该只调用一次的进程被调用了两次。
原因：Chrome 3 秒后取消第一个请求，然后再次请求相同的 URL。
顺序总是一样的。
- URL 请求
- 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
- URL 再次请求 https
- 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。
这只发生在 Chrome（对我来说是 92.0.4515.107）。我在 Firefox 中没有看到这种行为。
现在如何重现这一巫术？很简单，我可以在 2 个不同的提供商（GCE 和 OVH）上的 2 个不同的服务器上进行复制，并且它有一个奇怪的 link 初始请求的持续时间 URL.
在您的网络服务器上创建一个新的 php 脚本，只包含
<?php sleep(10); echo 'Done'; ?>在 Chrome
中调用您的脚本 URL第一次调用会成功
但接下来的所有调用肯定会触发“序列”
通过查看 Chrome 日志，我开始认为这有一个 link 和 HTTP2_SESSION
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
上面的URL_REQUEST，我们学的不多。我们只在 3 秒后看到“CANCELLED”。
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
演练：
- 初始请求（有效的请求）开始于 st=0，结束于 st=10106（睡眠 10 秒）
- 第二个请求（自动取消的请求）从 st=13362 开始，在 st=16374（3 秒后）结束，
t=238818 [st=16374] HTTP2_SESSION_SEND_RST_STREAM
--> description = ""
--> error_code = "8 (CANCEL)"
--> stream_id = 3
- 然后请求在 st=16402 重新加载，最后在 st=27480 返回，并有 10 秒的休眠延迟
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这样。
Chrome 在我的公司主要用于我们的内部工具，所以我发现它由于神秘原因连续 2 次重新加载繁重的处理 URL。
如有任何帮助，我们将不胜感激。
哦，我确实禁用了所有扩展程序。它没有帮助。无论如何，我在 Chrome 日志中没有看到任何关于任何扩展干预的提及。
同样的问题，我用Firefox的时候没有发现这样的问题。一开始怀疑是服务端配置问题。后来发现换了环境问题依旧。最后定位到浏览器端，不知道具体是什么原因
我认为这个问题可以在响应延迟超过 3 秒的任何域和服务器端的任何技术上重现。我想这是一个 chrome 问题。我用 ASP.net MVC 和 AWS Beanstalk 托管复制了它。当您限制连接以获得更慢的响应时间时，我还在 https://example.com/ 上以不同的方式复制了它。
要复制它（在 Chrome 版本 92.0.4515.159（官方构建）（64 位）上）：
- 打开 Dev Tools 并添加 Very Slow Network Throttling Profile 如下
- 通过粘贴转到 url：https://example.com/ -> 这应该有效
- 按 F5 刷新页面 -> 这应该也有效
- 现在，非常重要，只需单击地址栏两次即可看到：
也许这会帮助某人解决问题。
如果您的服务器不支持https，请尝试输入'http://'为每个请求指定协议。否则 Chrome 会自动尝试 https。需要3秒，然后去http.