mod_external_services: Also validate services added by other modules This ensures that problems with entries added other modules, e.g. mod_turn_external, are reported on startup. However, this depends on load order and whether a `module:depends()` call comes before the `module:add_item()` call. A followup commit will do something about that.

mod_storage_sql: Fix for move of yes/no function (Thanks Kasim)

mod_s2s: Remove duplicate method call (thanks luacheck) Should have been removed in the previous commit.

mod_s2s: Guard against LuaSec not returning TLS info here too See previous commit to mod_c2s: a62146353528

mod_c2s: Guard against LuaSec not returning TLS info (thanks Martin) The :info() method has been observed to return nothing ... sometimes. Unclear what causes it. Perhaps the TLS connection was shut down or hasn't fully settled? The LuaSec code has code paths that return nothing or nil, error, so it is best to guard against it.

doap: Update XEP-0368 entry with mention of direct_tls_ports

CHANGES: Add Direct TLS support Since there is now support for SNI with per-host certificates as well as support in `prosodyctl check dns`. Previous "support" was just the 'legacy_ssl' option, which didn't have much other supporting code.

mod_c2s: Log the same messages for Direct TLS as with starttls ^C^V

mod_c2s: Update a comment to reflect Direct TLS

util.prosodyctl.check: Ensure that libunbound does not check hosts file This fixes wrongly reported DNS problems on some distros where the hosts file contains an entry for the local machine, pointing at a loopback address such as 127.0.1.1 or similar.