Additionally to renaming, it changes the function definition so that
it accepts a pointer to pointer instead of returning a pointer to the
new object.
It is mostly done to make it in line with other functions in the
module.
The test expects a "connection timed out" message from DiG when it
experiences a timeout, while the current version of DiG prints just
a "timed out" message, like below:
;; communications error to 10.53.0.1#11314: timed out
;; communications error to 10.53.0.1#11314: timed out
;; communications error to 10.53.0.1#11314: timed out
; <<>> DiG 9.19.9-dev <<>> -p 11314 +tries +time +tcp +tries +time @10.53.0.1 dropedns. TXT
; (1 server found)
;; global options: +cmd
;; no servers could be reached
Change the expected string to match the current DiG output.
Use the '-F' switch for "grep" for matching a fixed string.
In order to have a common naming convention for system tests, rename the
only outlier "engine_pkcs11" to "enginepkcs11", which was the only
system test using an underscore in its name.
The only allowed word separators for system test names are either dash
or no separator.
It is better to use consistent file names to avoid issue with sorting
etc.
Using underscore in filenames as opposed to dash was chosen because it
seems more common in pytest/python to use underscore for filenames.
Also rename the bin/tests/system/timeouts/tests-tcp.py file to
bin/tests/system/timeouts/tests_tcp_timeouts.py to avoid pytest name
collision (there can't be two files named tests_tcp.py).
The dns_request code is very sensitive about calling the connected and
deadlocks when the timing is "right" in several places. Move the call
to the connected callback to the (udp|tcp)_connected() functions, so
they are called asynchronously instead of directly from
the (udp|tcp)_dispentry_cancel() functions.
The TCP dispatches are removed from the dispatchmgr->list in the
dispatch_destroy() and there's a brief period of time where
dns_dispatch_gettcp() can find a dispatch in connected state that's
being destroyed.
Set the dispatch state to DNS_DISPATCHSTATE_NONE in the TCP connection
callback if there are no responses waiting, and ignore TCP dispatches
with zero references in dns_dispatch_gettcp().
In tcp_connected() a typo has turned a DbC check into an assignment
breaking the state machine and making the dns_dispatch_gettcp() try to
attach to dispatch in process of destruction.
The TCP dispatches in DNS_DISPATCHSTATE_NONE could be either very
fresh or those could be dispatches that failed connecting to the
destination. Ignore them when trying to connect to an existing
TCP dispatch via dns_dispatch_gettcp().
This introduces a Python dependency for running system tests. It is
needed in order to:
- write new test control scripts in Python
- gradually rewrite old Perl scripts into Python if needed
- eventually introduce pytest as the new test runner framework
This commit is not intended to be backported to 9.16.
Nothing from conf.sh.common is required to set these values. On the
contrary, a Python interpreter needs to be set in order to randomize the
algorithm set (which happens in conf.sh.common).
When testcrypto.sh is used as a standalone script, always use quiet mode
to avoid using undefined commands (such as echo_i) which require
inclusion of the entire conf.sh machinery.
This commit modifies the Stream DNS message so that it uses the
optimised code path (isc__nm_senddns()) for sending DNS messages over
the underlying transport. This way we avoid allocating any
intermediate memory buffers needed to render a DNS message with its
length pre-pended ahead of the contents (TCP DNS message format).
The new internal function works in the same way as isc_nm_send()
except that it sends a DNS message size ahead of the DNS message
data (the format used in DNS over TCP).
The intention is to provide a fast path for sending DNS messages over
streams protocols - that is, without allocating any intermediate
memory buffers.
This commit optimises TLS send request object allocation to enable
send request object reuse, somewhat reducing pressure on the memory
manager. It is especially helpful in the case when Stream DNS uses the
TLS implementation as the transport.
This commit ensures that generic TLS unit tests are available in non
DoH-enabled builds, as isc_nm_tlssocket is not tied exclusively to the
DoH implementation anymore.
This commit unties generic TLS code (isc_nm_tlssocket) from DoH, so
that it will be available regardless of the fact if BIND was built
with DNS over HTTP support or not.
This commit ensures that Stream DNS code attempts to disable Nagle's
algorithm regardless of underlying stream transport (TCP or TLS), as
we are not interested in trading latency for throughout when dealing
with DNS messages.
This commit ensures that Nagle's algorithm is disabled by default for
TLS connections on best effort basis, just like other networking
software (e.g. NGINX) does, as, in the case of TLS, we are not
interested in trading latency for throughput, rather vice versa.
We attempt to disable it as early as we can, right after TCP
connections establishment, as an attempt to speed up handshake
handling.
This commit adds ability to turn the Nagle's algorithm on or off via
connections handle. It adds the isc_nmhandle_set_tcp_nodelay()
function as the public interface for this functionality.
This commit modifies the existing unit tests for TLS DNS and TCP DNS
in such a way that the new Stream DNS transport is used as it is
intended to be a drop-in replacement for these two transports.
This commit adds an initial implementation of isc_nm_streamdnssocket
transport: a unified transport for DNS over stream protocols messages,
which is capable of replacing both TCP DNS and TLS DNS
transports. Currently, the interface it provides is a unified set of
interfaces provided by both of the transports it attempts to replace.
The transport is built around "isc_dnsbuffer_t" and
"isc_dnsstream_assembler_t" objects and attempts to minimise both the
number of memory allocations during network transfers as well as
memory usage.
Artem Boldariev
Tom Krizek
Arаm Sаrgsyаn
Artem Boldariev
Ondřej Surý