Tests weren't compiling due to change of ListenHttp() signature. Fixed
for now by reintroducing domain parameter in addition to server, as this
allows the HTTP tests to pass in a nil server parameter. In the long
term DNSServer should probably become an interface so we can mock it
easily in such a scenario.
* Put prefixes (including msg IDs) in front of log messages to
distinguish them
* Failed lookups get logged under Info as per issue #311
* More accurate messages as per issue #311
The zone DB no longer considers duplciates of (IP, name); it will
reject duplicates of (IP, name, ident), but this ultimately doesn't
matter since those are all the fields it records anyway.
The HTTP interface treats these duplicates as trivial success (i.e.,
it acts as if it's idempotent, which it is).
This changes the behaviour for removals: if (IP, name) is recorded for
two different containers, removing one will leave the other extant.
e.g. when it was started with --net=none
weavedns wasn't actually using the docker-assigned ip for anything, so
this change is a simple matter of eradicating it from the code.
Bryan Boreham