mod_admin_telnet: Avoid using LuaSocket for timestamps Using util.time will make it easier to move away from LuaSocket if we ever wanted to do that.

mod_saslauth: Set a nicer bounce error explaining SASL EXTERNAL failures Better than the previous string concatenation of SASL failure condition and optional text sent by the remote server. Would be nice to have a text per condition, other than the probably most common 'not-authorized'.

mod_saslauth: Collect SASL EXTERNAL failures into an util.error object Will be easier than that concatenated string to extract info out of for use elsewhere.

net.server_epoll: Add debug logging for delayed reading In :onreadable, if there is still buffered incoming data after reading from the socket (as indicated by the :dirty method, usually because LuaSocket has an 8k buffer that's full but it read a smaller amount), another attempt to read is scheduled via this :pausefor method. This is also called from some other places where it would be pointless to read because there shouldn't be any data. In the delayed read case, this should report that the socket is "dirty". If it reports that the socket is "clean" then the question is where the buffer contents went? If this doesn't get logged after the scheduled time (0.000001s by default) then this would suggests a problem with timer or scheduling.

net.connect: Mention RFC 6724 regression Default Address Selection algorithm is not applied, resulting in a strong bias towards IPv4.

net.connect: Add some TODOs and FIXMEs And mention issue numbers: #1246, #1428 and #1429

mod_s2s: Invert condition to return early and reduce indentation

mod_s2s: Fix mistake in 28755107c2f4

mod_saslauth: Advertise correct set of mechanisms Mistakenly iterates over the set of all supported mechanisms instead of the one without insecure mechanisms if the connection is insecure. Not a problem if c2s_require_encryption is true Introduced in 56a0f68b7797

util.*.c: Add static qualifiers everywhere