From 3b9b6d0b8e7f798023c9d109c490449d528fde80 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:59:48 +0200 Subject: Adding upstream version 1:9.18.19. Signed-off-by: Daniel Baumann --- bin/tests/system/timeouts/tests_tcp_timeouts.py | 279 ++++++++++++++++++++++++ 1 file changed, 279 insertions(+) create mode 100644 bin/tests/system/timeouts/tests_tcp_timeouts.py (limited to 'bin/tests/system/timeouts/tests_tcp_timeouts.py') diff --git a/bin/tests/system/timeouts/tests_tcp_timeouts.py b/bin/tests/system/timeouts/tests_tcp_timeouts.py new file mode 100644 index 0000000..2e2a4b4 --- /dev/null +++ b/bin/tests/system/timeouts/tests_tcp_timeouts.py @@ -0,0 +1,279 @@ +#!/usr/bin/python3 + +# 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. + +# pylint: disable=unused-variable + +import socket +import time + +import pytest + +pytest.importorskip("dns", minversion="2.0.0") +import dns.edns +import dns.message +import dns.name +import dns.query +import dns.rdataclass +import dns.rdatatype + +import pytest_custom_markers # pylint: disable=import-error + + +TIMEOUT = 10 + + +def create_msg(qname, qtype): + msg = dns.message.make_query( + qname, qtype, want_dnssec=True, use_edns=0, payload=4096 + ) + return msg + + +def timeout(): + return time.time() + TIMEOUT + + +def test_initial_timeout(named_port): + # + # The initial timeout is 2.5 seconds, so this should timeout + # + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + time.sleep(3) + + msg = create_msg("example.", "A") + + with pytest.raises(EOFError): + try: + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + except ConnectionError as e: + raise EOFError from e + + +def test_idle_timeout(named_port): + # + # The idle timeout is 5 seconds, so the third message should fail + # + msg = create_msg("example.", "A") + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + time.sleep(1) + + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(2) + + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(6) + + with pytest.raises(EOFError): + try: + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + except ConnectionError as e: + raise EOFError from e + + +def test_keepalive_timeout(named_port): + # + # Keepalive is 7 seconds, so the third message should succeed. + # + msg = create_msg("example.", "A") + kopt = dns.edns.GenericOption(11, b"\x00") + msg.use_edns(edns=True, payload=4096, options=[kopt]) + + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + time.sleep(1) + + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(2) + + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(6) + + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + +def test_pipelining_timeout(named_port): + # + # The pipelining should only timeout after the last message is received + # + msg = create_msg("example.", "A") + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + time.sleep(1) + + # Send and receive 25 DNS queries + for n in range(25): + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + for n in range(25): + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(3) + + # Send and receive 25 DNS queries + for n in range(25): + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + for n in range(25): + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + time.sleep(6) + + with pytest.raises(EOFError): + try: + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + except ConnectionError as e: + raise EOFError from e + + +def test_long_axfr(named_port): + # + # The timers should not fire during AXFR, thus the connection should not + # close abruptly + # + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + name = dns.name.from_text("example.") + msg = create_msg("example.", "AXFR") + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + + # Receive the initial DNS message with SOA + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + assert soa is not None + + # Pull DNS message from wire until the second SOA is received + while True: + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + if soa is not None: + break + assert soa is not None + + +@pytest_custom_markers.flaky(max_runs=3) +def test_send_timeout(named_port): + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + # Send and receive single large RDATA over TCP + msg = create_msg("large.example.", "TXT") + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + + # Send and receive 28 large (~32k) DNS queries that should + # fill the default maximum 208k TCP send buffer + for n in range(28): + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + + # configure idle interval is 5 seconds, sleep 6 to make sure we are + # above the interval + time.sleep(6) + + with pytest.raises(EOFError): + try: + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + (response, rtime) = dns.query.receive_tcp(sock, timeout()) + except ConnectionError as e: + raise EOFError from e + + +@pytest_custom_markers.long_test +def test_max_transfer_idle_out(named_port): + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + name = dns.name.from_text("example.") + msg = create_msg("example.", "AXFR") + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + + # Receive the initial DNS message with SOA + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + assert soa is not None + + time.sleep(61) # max-transfer-idle-out is 1 minute + + with pytest.raises(ConnectionResetError): + # Process queued TCP messages + while True: + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + if soa is not None: + break + assert soa is None + + +@pytest_custom_markers.long_test +def test_max_transfer_time_out(named_port): + with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock: + sock.connect(("10.53.0.1", named_port)) + + name = dns.name.from_text("example.") + msg = create_msg("example.", "AXFR") + (sbytes, stime) = dns.query.send_tcp(sock, msg, timeout()) + + # Receive the initial DNS message with SOA + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + assert soa is not None + + # The loop should timeout at the 5 minutes (max-transfer-time-out) + with pytest.raises(EOFError): + while True: + time.sleep(1) + (response, rtime) = dns.query.receive_tcp( + sock, timeout(), one_rr_per_rrset=True + ) + soa = response.get_rrset( + dns.message.ANSWER, name, dns.rdataclass.IN, dns.rdatatype.SOA + ) + if soa is not None: + break + assert soa is None -- cgit v1.2.3