Commit 85cf6dcb authored by Nick Mathewson's avatar Nick Mathewson

Stop declining to download microdescs with future published times.

This change is the only one necessary to allow future versions of
the microdescriptor consensus to replace every 'published' date with
e.g. 2038-01-01 00:00:00; this will save 50-75% in compressed
microdescriptor diff size, which is quite significant.

This commit is a minimal change for 0.2.9; future series will
reduce the use of the 'published' date even more.

Implements part of ticket 21642; implements part of proposal 275.
parent 75492598
o Minor features (future-proofing):
- Tor no longer refuses to download microdescriptors or descriptors if
they are listed as "published in the future". This change will
eventually allow us to stop listing meaningful "published" dates
in microdescriptor consensuses, and thereby allow us to reduce the
resources required to download consensus diffs by over 50%.
Implements part of ticket 21642; implements part of proposal 275.
......@@ -2360,11 +2360,6 @@ client_would_use_router(const routerstatus_t *rs, time_t now,
* But, if we want to have a complete list, fetch it anyway. */
return 0;
if (rs->published_on + options->TestingEstimatedDescriptorPropagationTime
> now) {
/* Most caches probably don't have this descriptor yet. */
return 0;
if (rs->published_on + OLD_ROUTER_DESC_MAX_AGE < now) {
/* We'd drop it immediately for being too old. */
return 0;
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