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6c5ff94218
When networking statistics was added to the netmgr (in commit
5234a8e00a), two lines were added that
increment the 'STATID_RECVFAIL' statistic: One if 'uv_read_start'
fails and one at the end of the 'read_cb'. The latter happens
if 'nread < 0'.
According to the libuv documentation, I/O read callbacks (such as for
files and sockets) are passed a parameter 'nread'. If 'nread' is less
than 0, there was an error and 'UV_EOF' is the end of file error, which
you may want to handle differently.
In other words, we should not treat EOF as a RECVFAIL error.
74 lines
2.5 KiB
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74 lines
2.5 KiB
ReStructuredText
..
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Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, you can obtain one at https://mozilla.org/MPL/2.0/.
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See the COPYRIGHT file distributed with this work for additional
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information regarding copyright ownership.
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Notes for BIND 9.17.6
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---------------------
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Security Fixes
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~~~~~~~~~~~~~~
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- None.
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Known Issues
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~~~~~~~~~~~~
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- None.
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New Features
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~~~~~~~~~~~~
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- Add a new ``rndc`` command, ``rndc dnssec -rollover``, which triggers
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a manual rollover for a specific key. [GL #1749]
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- New ``rndc`` command ``rndc dumpdb -expired`` that dumps the cache database
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to the dump-file including expired RRsets that are awaiting cleanup, for
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diagnostic purposes. [GL #1870]
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Removed Features
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~~~~~~~~~~~~~~~~
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- None.
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Feature Changes
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~~~~~~~~~~~~~~~
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- [DNS Flag Day 2020]: The default EDNS buffer size has been changed from 4096
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to 1232, the EDNS buffer size probing has been removed and ``named`` now sets
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the DON'T FRAGMENT flag on outgoing UDP packets. According to the
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measurements done by multiple parties this should not be causing any
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operational problems as most of the Internet "core" is able to cope with IP
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message sizes between 1400-1500 bytes, the 1232 size was picked as a
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conservative minimal number that could be changed by the DNS operator to a
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estimated path MTU minus the estimated header space. In practice, the smallest
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MTU witnessed in the operational DNS community is 1500 octets, the Ethernet
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maximum payload size, so a a useful default for maximum DNS/UDP payload size
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on reliable networks would be 1400. [GL #2183]
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Bug Fixes
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~~~~~~~~~
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- Updating contents of an RPZ zone which contained names spelled using
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varying letter case could cause some processing rules in that RPZ zone
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to be erroneously ignored. [GL #2169]
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- `named` would report invalid memory size when running in an environment
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that doesn't properly report number of available memory pages or pagesize.
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[GL #2166]
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- `named` would exit with assertion failure REQUIRE(msg->state == (-1)) in
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message.c due to a possible data race. [GL #2124]
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- `named` would start continous rollovers for policies that algorithms
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Ed25519 or Ed448 due to a mismatch in created key size and expected key size.
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[GL #2171]
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- Handle `UV_EOF` differently such that it is not treated as a `TCP4RecvErr` or
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`TCP6RecvErr`. [GL #2208]
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