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ea36796f82
3938. [func] Added quotas to be used in recursive resolvers that are under high query load for names in zones whose authoritative servers are nonresponsive or are experiencing a denial of service attack. - "fetches-per-server" limits the number of simultaneous queries that can be sent to any single authoritative server. The configured value is a starting point; it is automatically adjusted downward if the server is partially or completely non-responsive. The algorithm used to adjust the quota can be configured via the "fetch-quota-params" option. - "fetches-per-zone" limits the number of simultaneous queries that can be sent for names within a single domain. (Note: Unlike "fetches-per-server", this value is not self-tuning.) - New stats counters have been added to count queries spilled due to these quotas. These options are not available by default; use "configure --enable-fetchlimit" (or --enable-developer) to include them in the build. See the ARM for details of these options. [RT #37125]
40 lines
1.3 KiB
Bash
40 lines
1.3 KiB
Bash
#!/bin/sh
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#
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# Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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SYSTEMTESTTOP=..
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. $SYSTEMTESTTOP/conf.sh
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if ./fetchlimit
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then
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:
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else
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echo "I:This test requires --enable-fetchlimit at compile time." >&2
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exit 255
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fi
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if $PERL -e 'use Net::DNS;' 2>/dev/null
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then
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if $PERL -e 'use Net::DNS; die if ($Net::DNS::VERSION >= 0.76 && $Net::DNS::VERSION <= 0.77);' 2>/dev/null
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then
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:
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else
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echo "I:Net::DNS version 0.76 and 0.77 have a bug that causes this test to fail: please update." >&2
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exit 1
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fi
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else
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echo "I:This test requires the Net::DNS library." >&2
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exit 1
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fi
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