On Linux, all IPv6 sockets are dual-stack per default; on Windows, they
are not. It's still a good idea to set the option on Linux as well as
the default value can be changed.
It's not actually used anywhere, but it's not broken now!
This also moves the low-level and OS-specific GetLocalAddresses code to
C4NetIO where it's fitting better than in C4Network2Client.
We use ff02::1 as discovery multicast address.
This "all nodes" multicast address is good enough for discovery in the
local network as packets there are likely broadcasted over ethernet
anyways.
Link-local IPv6 addresses are valid on all interfaces and thus need an
interface specifier / scope id, e.g. fe80::1%eth0.
This commit adds scope ids for initial host connections only. While not
optimal, this is probably enough in practise as the link-local addresses
are likely only important when there is no internet connectivity. In
this case, connecting clients directly is less of an advantage.
We already require support for std::unique_ptr, which itself requires
support for rvalue references. As such, we know we can use rvalue
references, and thus don't have to keep carrying dead code around.
As discussed in http://forum.openclonk.org/topic_show.pl?tid=2917, I
have merged all copyright notices into a single file and referenced that
merged file from each source file.
For the updated source files, the timeline has been split into three
parts:
1. Pre-RWD code (before 2001)
2. RWD code (2001 through 2009)
3. OpenClonk code (2009 and later)
All pre-RWD copyright notices have been left intact, as have RWD-era
copyright notices where the file did not have a RedWolf design copyright
notice but only individual author ones. All copyright notices of the
OpenClonk era have been replaced by a single notice ranging from the
first recorded year to the current year (2013). Mape code did not get a
OpenClonk Team copyright notice because it is somewhat separate from the
main OpenClonk codebase and has only been touched by Armin Burgmeier.
The new type C4TimeMilliseconds behaves for the most part like a uint32_t but is overflow-proof in comparisons.
In some places, a 0-value (or uint_max) of the variable storing the time had the special meaning "not set yet". This has been resolved by having it as a pointer to C4TimeMilliseconds with NULL meaning that it has not been set yet.
The network used to cast GetTime() to int, but GetTime() is an unsigned long. This might cause problems if GetTime() returns big integers (see #251). To solve this, the StdSchedulerProc interface had to be extended with another function in order to eliminate the magic return value -1 of GetNextTick for "no scheduled execution".
A few windows headers are still included, but not the big offenders
rpcndr.h, wingdi.h and winuser.h. Unfortunately, the latter two need to be
included from StdWindow.h, so still wind up in a lot files, which means
some of the #defines in them need to be undone. To avoid doing that in
multiple places, a few more files include StdWindow.h now.
This is a whitespace-only patch. Hopefully, it'll only affect rarely-changed
parts of the engine, since all regularly maintained pieces should already
use tabs.
Lukas Werling