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add a test of the keepalive timeout

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test server now has tcp-idle-timeout set to 5 seconds and
tcp-keepalive-timeout set to 7, so queries that follow a 6-second sleep
should either succeed or fail depending on whether the keepalive option
was sent.
This commit is contained in:
Evan Hunt 2021-07-14 23:15:15 -07:00
parent fc6f751fbe
commit 947e80066c
2 changed files with 34 additions and 3 deletions
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1
bin/tests/system/timeouts/ns1/named.conf.in
View file

@ -27,6 +27,7 @@ options {
notify no;
tcp-initial-timeout 20;
tcp-idle-timeout 50;
tcp-keepalive-timeout 70;
};
zone "." {

36
bin/tests/system/timeouts/tests-tcp.py
View file

@ -24,7 +24,6 @@ def create_msg(qname, qtype):
import dns.message
msg = dns.message.make_query(qname, qtype, want_dnssec=True,
use_edns=0, payload=4096)
return msg
@ -59,7 +58,7 @@ def test_initial_timeout(port):
@pytest.mark.dnspython2
def test_idle_timeout(port):
#
# The idle timeout is 5 second, so sending the second message must fail
# The idle timeout is 5 seconds, so the third message should fail
#
import dns.rcode
@ -72,7 +71,7 @@ def test_idle_timeout(port):
(sbytes, stime) = dns.query.send_tcp(sock, msg, timeout())
(response, rtime) = dns.query.receive_tcp(sock, timeout())
time.sleep(3)
time.sleep(2)
(sbytes, stime) = dns.query.send_tcp(sock, msg, timeout())
(response, rtime) = dns.query.receive_tcp(sock, timeout())
@ -87,6 +86,37 @@ def test_idle_timeout(port):
raise EOFError from e
@pytest.mark.dnspython
@pytest.mark.dnspython2
def test_keepalive_timeout(port):
#
# Keepalive is 7 seconds, so the third message should succeed.
#
import dns.rcode
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", 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())
@pytest.mark.dnspython
@pytest.mark.dnspython2
def test_pipelining_timeout(port):