Mercurial > hg > nginx
annotate docs/html/50x.html @ 9170:c80d111340dc
QUIC: prevented generating ACK frames with discarded keys.
Previously it was possible to generate ACK frames using formally discarded
protection keys, in particular, when acknowledging a client Handshake packet
used to complete the TLS handshake and to discard handshake protection keys.
As it happens late in packet processing, it could be possible to generate ACK
frames after the keys were already discarded.
ACK frames are generated from ngx_quic_ack_packet(), either using a posted
push event, which envolves ngx_quic_generate_ack() as a part of the final
packet assembling, or directly in ngx_quic_ack_packet(), such as when there
is no room to add a new ACK range or when the received packet is out of order.
The added keys availability check is used to avoid generating late ACK frames
in both cases.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Fri, 20 Oct 2023 18:05:07 +0400 |
parents | f2ddd0c491bf |
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rev | line source |
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4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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1 <!DOCTYPE html> |
657 | 2 <html> |
3 <head> | |
4840
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Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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4 <title>Error</title> |
657 | 5 <style> |
7903
f2ddd0c491bf
Dark mode support in welcome and 50x error pages.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7902
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6 html { color-scheme: light dark; } |
7902
67c68cd973b8
Welcome and 50x error pages style.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7336
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7 body { width: 35em; margin: 0 auto; |
67c68cd973b8
Welcome and 50x error pages style.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7336
diff
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8 font-family: Tahoma, Verdana, Arial, sans-serif; } |
657 | 9 </style> |
10 </head> | |
4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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11 <body> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
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12 <h1>An error occurred.</h1> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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13 <p>Sorry, the page you are looking for is currently unavailable.<br/> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
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changeset
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14 Please try again later.</p> |
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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15 <p>If you are the system administrator of this resource then you should check |
7336
1cd63ae46243
A link to the error_log directive on nginx.org removed.
Maxim Konovalov <maxim@nginx.com>
parents:
4840
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16 the error log for details.</p> |
4840
b5ba6f22a0fc
Improved 50x error page.
Valentin Bartenev <vbart@nginx.com>
parents:
663
diff
changeset
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17 <p><em>Faithfully yours, nginx.</em></p> |
657 | 18 </body> |
19 </html> |