Add warning about time on very low TTL's.

Likhit · Nov 4, 2017 · ca66b82 · ca66b82
1 parent 105064c
commit ca66b82
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/doc/protocol.txt b/doc/protocol.txt
@@ -89,6 +89,9 @@ of seconds in 30 days); if the number sent by a client is larger than
 that, the server will consider it to be real Unix time value rather
 than an offset from current time.
 
+Note that a TTL of 1 will sometimes immediately expire. Time is internally
+updated on second boundaries, which makes expiration time roughly +/- 1s.
+This more proportionally affects very low TTL's.
 
 Error strings
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