Mercurial > hg > nginx
annotate auto/have @ 7863:3e78c12d4f37 stable-1.20
Resolver: explicit check for compression pointers in question.
Since nginx always uses exactly one entry in the question section of
a DNS query, and never uses compression pointers in this entry, parsing
of a DNS response in ngx_resolver_process_response() does not expect
compression pointers to appear in the question section of the DNS
response. Indeed, compression pointers in the first name of a DNS response
hardly make sense, do not seem to be allowed by RFC 1035 (which says
"a pointer to a prior occurance of the same name", note "prior"), and
were never observed in practice.
Added an explicit check to ngx_resolver_process_response()'s parsing
of the question section to properly report an error if compression pointers
nevertheless appear in the question section.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 25 May 2021 15:17:50 +0300 |
parents | d620f497c50f |
children |
rev | line source |
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nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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1 |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
444
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5 |
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6 cat << END >> $NGX_AUTO_CONFIG_H |
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7 |
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8 #ifndef $have |
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9 #define $have 1 |
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10 #endif |
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11 |
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12 END |