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Use isctest.asyncserver in the "nsupdate" test

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Reimplement the custom server written in Perl in Python using the
AsyncDnsServer class.

(cherry picked from commit 99b0cf2dd7)
This commit is contained in:
Štěpán Balážik 2025-08-28 18:13:36 +02:00
parent 7b8b7550d3
commit cde0178801
2 changed files with 27 additions and 65 deletions
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65
bin/tests/system/nsupdate/ans4/ans.pl
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@ -1,65 +0,0 @@
#!/usr/bin/perl
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.
use IO::Socket;
use IO::File;
use strict;
# Ignore SIGPIPE so we won't fail if peer closes a TCP socket early
local $SIG{PIPE} = 'IGNORE';
# Flush logged output after every line
local $| = 1;
my $server_addr = "10.53.0.4";
if (@ARGV > 0) {
$server_addr = @ARGV[0];
}
my $localport = int($ENV{'PORT'});
if (!$localport) { $localport = 5300; }
my $udpsock = IO::Socket::INET->new(LocalAddr => "$server_addr",
LocalPort => $localport, Proto => "udp", Reuse => 1) or die "$!";
my $tcpsock = IO::Socket::INET->new(LocalAddr => "$server_addr",
LocalPort => $localport, Proto => "tcp", Listen => 5, Reuse => 1) or die "$!";
print "listening on $server_addr:$localport.\n";
my $pidf = new IO::File "ans.pid", "w" or die "cannot open pid file: $!";
print $pidf "$$\n" or die "cannot write pid file: $!";
$pidf->close or die "cannot close pid file: $!";;
sub rmpid { unlink "ans.pid"; exit 1; };
$SIG{INT} = \&rmpid;
$SIG{TERM} = \&rmpid;
# Main
for (;;) {
my $rin;
my $rout;
$rin = '';
vec($rin, fileno($udpsock), 1) = 1;
vec($rin, fileno($tcpsock), 1) = 1;
select($rout = $rin, undef, undef, undef);
if (vec($rout, fileno($udpsock), 1)) {
printf "UDP request\n";
my $buf;
$udpsock->recv($buf, 512);
} elsif (vec($rout, fileno($tcpsock), 1)) {
printf "TCP request\n";
}
}

27
bin/tests/system/nsupdate/ans4/ans.py Normal file
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@ -0,0 +1,27 @@
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.
from isctest.asyncserver import (
AsyncDnsServer,
IgnoreAllConnections,
IgnoreAllQueries,
)
def main() -> None:
server = AsyncDnsServer()
server.install_connection_handler(IgnoreAllConnections())
server.install_response_handler(IgnoreAllQueries())
server.run()
if __name__ == "__main__":
main()