previously, hostname and ip strings were shuffled to the msg object, which
created a property out of them. Now the cache holds the property, and it
is resused (almost) everywhere, what saves a lot of memory operations.
The only exception is imtcp session setup, where different handling
of the hostname is done, which we need to sort out (but that's another
story).
Most importantly, DNS resolution now never happens if the resolved name
is not required. Note that this applies to imudp - for the other inputs,
DNS resolution almost comes for free, so we do not do it there. However,
the new method has been implemented in a generic way and as such may
also be used by other modules in the future.
A comparison was done between the current and the former source address.
However, this was done on the full sockaddr_storage structure and not
on the host address only. This has now been changed for IPv4 and IPv6.
The end result of this bug could be a higher UDP message loss rate than
necessary (note that UDP message loss can not totally be avoided due
to the UDP spec)
The TLS server now checks the client fingerprint. This works, but
is highly experimental. Needs to be refined for practice. Also:
- implemented permittedPeers helper construct to store names
- changed omfwd implementation to use new permittedPeers
- bugfix: TCP input modules did incorrectly set fromhost property
(always blank)
- bugfix: imklog did not set fromhost property
- added "fromhost-ip" property
- added "RSYSLOG_DebugFormat" canned template
- bugfix: hostname and fromhost were swapped when a persisted message
(in queued mode) was read in
after careful analysis, I concluded that it is OK to
place the current net.c/.h code under LGPL. Individual
contributor agreement is given and no sysklogd code
remains (see net.c for details).
