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"""What the expiry sweep finds after a connection has already gone.
A plain request is answered and the connection closed by http_senddata, not
by the sweep. If that path leaves the descriptor's slot behind, the sweep
walks into it once the client timeout has passed and frees a cookie that is
already gone. Under the sanitizer build that is reported, and teardown turns
it into a failure.
The two numbers below mirror OT_CLIENT_TIMEOUT and
OT_CLIENT_TIMEOUT_CHECKINTERVAL in FEATURES_integration.
"""
import time
import unittest
from harness import TrackerTestCase
CLIENT_TIMEOUT = 5
CHECK_INTERVAL = 1
class ExpirySweep(TrackerTestCase):
def test_an_answered_request_leaves_nothing_behind(self):
info_hash = self.hash_for("expiry-sweep")
self.assertEqual(self.tracker.announce(info_hash)[b"complete"], 1)
# Long enough for the slot to expire and for a sweep to visit it
time.sleep(CLIENT_TIMEOUT + 3 * CHECK_INTERVAL)
self.assertEqual(self.tracker.torrent_count(), 1, "the tracker stopped serving while sweeping")
def test_a_connection_that_never_speaks_is_swept(self):
"""The other side of it: a slot that really is live must still go."""
import socket
idle = socket.create_connection(("127.0.0.1", self.tracker.port), timeout=5)
try:
time.sleep(CLIENT_TIMEOUT + 3 * CHECK_INTERVAL)
idle.settimeout(5)
self.assertEqual(idle.recv(64), b"", "the tracker held a connection that never sent a request")
finally:
idle.close()
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