Feeds using SuperFeeder for PubSubHubbub push had timeout problems
during substription.
SuperFeeder bot was returning 422 "We could not verify your callback
Error: ETIMEDOUT"
It seems to be due to the the fact that SuperFeeder bot uses keep-alive
but expects the server to close the connection.
https://github.com/FreshRSS/FreshRSS/issues/312#issuecomment-73716936
https://github.com/FreshRSS/FreshRSS/issues/312
Show whether PubSubHubbub is enabled in the Web interface of feed
configuration.
When PubSubHubbub is used, do not pull refresh so often (hard-coded to
max once per 24h for now).
Improved logic for lease renewal, and some detection of lease problems.
Updated read-me and changelog.