commit 793f6ee11e525523fcc2ef42ec423f167c90dd9c Author: teor teor@torproject.org Date: Thu Mar 12 13:33:36 2020 +1000

TorNet: Temporarily wait for unchecked dir info

Avoids a race condition in microdescriptor downloads in 0.3.5.

Once we check for microdescriptors in 33428, we should be able to reduce this timeout.

Part of 33379. --- lib/chutney/TorNet.py | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/lib/chutney/TorNet.py b/lib/chutney/TorNet.py index 617e3c7..8ce4efa 100644 --- a/lib/chutney/TorNet.py +++ b/lib/chutney/TorNet.py @@ -2145,8 +2145,12 @@ class Network(object): dmsg)) print()

+ # Keep in sync with torrc_templates/authority.i V3AuthVotingInterval + V3_AUTH_VOTING_INTERVAL = 20.0 + CHECK_NETWORK_STATUS_DELAY = 1.0 - PRINT_NETWORK_STATUS_DELAY = 10.0 + PRINT_NETWORK_STATUS_DELAY = V3_AUTH_VOTING_INTERVAL/2.0 + WAIT_FOR_UNCHECKED_DIR_INFO_DELAY = V3_AUTH_VOTING_INTERVAL + 1.0

def wait_for_bootstrap(self): print("Waiting for nodes to bootstrap...\n") @@ -2188,6 +2192,20 @@ class Network(object): most_recent_desc_status, elapsed=elapsed, msg="Bootstrap finished") + # Avoid a race condition where: + # - all the directory info that chutney checks is present, + # - but some unchecked dir info is missing + # (perhaps microdescriptors, see #33428) + # or some other state or connection isn't quite ready, and + # - chutney's SOCKS connection puts tor in a failing state, + # which affects tor for at least 10 seconds. + # + # We have only seen this race condition in 0.3.5. The fixes to + # microdescriptor downloads in 0.4.0 or 0.4.1 likely resolve + # this issue. + print("Waiting {} seconds for other dir info to sync...\n" + .format(int(Network.WAIT_FOR_UNCHECKED_DIR_INFO_DELAY))) + time.sleep(Network.WAIT_FOR_UNCHECKED_DIR_INFO_DELAY) return True if now >= limit: break