- Messages that expect a reply are now tagged with a unique ID field to
indicate that expectation to the receiving socket messenger.
- The messenger now maintains a map of received reply IDs and their
corresponding messages, along with a message queue of other unsolicited
replies.
- After successfully connecting, the messenger now spawns a thread
whose sole responsibility is receiving and parsing all incoming messages,
and consequently sorting them into the aforementioned data structures based
on the presence of the reply ID. Callers who are awaiting either replies or
other messages are signalled appropriately via a semaphore. This allows
multiplexing of both types of messages on the same socket.
- Introduces new network API class BSocketMessenger, allowing one to send
and receive BMessages across a network socket in a BMessenger-like
fashion. Still very much WIP, hence currently not exposed via public headers.
Based partly on previous work by Axel.
border vs. borders is confusing.
BTabView: Rename border param to borderStyle
BTabView docs: rename border param to borderStyle
enumerate border styles in docs
B{Abstract,Datagram,Secure}Socket:
- Add functionality to listen for and accept new connections, thus allowing
one to use the socket classes for server functionality as well.
BSecureSocket:
- Adjust to take into account differences between how SSL needs to be called
when accepting an incoming connection vs initiating an outbound one.
The handshake on the accepted connection stills fails for unknown reasons
at the moment though.
Note that these changes break the ABI, and thus any packages making use of
them directly will need a rebuild.
* The Haiku specific notes contain a structure size field, now.
* Change the type of the count and size fields in the Haiku specific
notes to uint32 also for 64 bit ELF. The size field for a note is a
uint32 anyway.
* Add function core_dump_write_core_file(). It writes a core file for
the current thread's team. The file format is similar to that of
other OSs (i.e. ELF with PT_LOAD segments and a PT_NOTE segment), but
most of the notes are Haiku specific (infos for team, areas, images,
threads). More data will probably need to be added.
* Add team flag TEAM_FLAG_DUMP_CORE, thread flag
THREAD_FLAGS_TRAP_FOR_CORE_DUMP, and Team property coreDumpCondition,
a condition variable available while a core dump is progress. A
thread that finds its flag THREAD_FLAGS_TRAP_FOR_CORE_DUMP set before
exiting the kernel to userland calls core_dump_trap_thread(), which
blocks on the condition variable until the core dump has finished. We
need the team's threads to stop so we can get their CPU state (and
have a generally unchanging team state while writing the core file).
* Add user debugger message B_DEBUG_WRITE_CORE_FILE. It causes
core_dump_write_core_file() to be called for the team.
* Dumping core as an immediate effect of a terminal signal has not been
implemented yet, but that should be fairly straight forward.
Similar to arch_get_debug_cpu_state(), but the thread whose CPU state
to retrieve is specified. Works only for threads that aren't running,
and on x86-64 we can get the FPU state only when the thread was
interrupted in userland.
Not implemented for the incomplete architecture ports.
This resolves a TODO: We used thread_interrupt() to wake up the thread
from an interruptable wait. However, if the thread was already in the
kernel and about to start waiting, that would have no effect and the
thread would wait anyway. Now there's the new non-blockable signal
SIGNAL_DEBUG_THREAD, which is sent to the thread instead, making sure
that thread doesn't start waiting.
* New Intel SkyLake seems to have 9 mapped ranges
at boot. It seems like this define has been creeping
up for a while.
* Resolves the inital issue reported in #11377 on SkyLake
as well. Bonefish mentioned it might need to be raised
again... he had some good foresight there :-)
* I'm seeing the same no bootable partitions issue though
via USB after this raise. (maybe a USB 3.1 thing?)
* When the user isn't requesting a custom notification, it will
be a BMediaRoster job to do it.
* Reintroduce BMediaRoster::SyncToServices, this time based on local
message passing rather than a global semaphore.
* SyncToServices is used in launch_media_server to make the process
more launch_daemon safe and faster in the average case.
* It was an error to add notifications in the media_server.
* Fixes#12717.
...to just DefaultSettingsView
It is just as obvious what it does in context, but shorter.
Rename the function it contains from
BuildDefaultScreenSaverSettingsView to
BuildDefaultSettingsView
* The old debug system was too complex and made
troubleshooring difficult. (it also was unique
like a snowflake... which we don't want)
* Move to the classic TRACE / ERROR a large majority
of the code has changed to.
* I like trace statements, but drop some obvious ones
* Fix style issues along the way
* Remove SyncToServices, I will probably readd it in future
but this time using a local synchronization service more than
relying on the media_server to release the semaphore.
* Due to some discussions today in mailing list I decided
to step back and retry the initial way to notify media rosters
about media services status. It is woking by using two different
notifications for reconnecting to the media_server and notifying
the local subscribers.
* This speed up the media services restart.
* Sorry for the noise and very thanks for reviewing my code to
everyone.
* The global synchro semaphore is provided with the purpose of
being used to avoid threads lock up when the media_server is in
an undefined state. There's still room for improvements.
* BMediaRoster::SyncToServices lock up on a semaphore until
the multi_audio correctly connected to the mixer.
* There's no need to force the streamer plugin to use a
BMediaIO. This class is supplied to accomodate more smart uses,
but in certain cases it makes just things more complex. If a
plugin doesn't need to have an internal caching method, then it
will be simpler to implement a block-consuming BDataIO and let
the internal BMediaIOWrapper to deal with caching.
* When a watched directory contains a mount point, we need to resolve
the actual parent directory of the mount point in the file system to
serve the monitor.
* Added a directory argument for notify_{stat/attribute}_changed().
* This allows to watch only a directory, and get the notifications for
all of its files, not just add/remove entry notifications.
...and rename fBitmap to fOffscreenBitmap to make it more clear what it is.
We don't need to save a pointer to both the offscreen bitmap and
the offscreen view, just the bitmap. We can access the view by calling
fOffscreenBitmap->ChildAt((int32)0). This gives us back a _reserved private
variable slot.
In the (unlikely) case that _InitData() is called with offscreen = false but
the fOffscreenBitmap is not NULL, delete fOffscreenBitmap before
setting it to NULL so that memory is not leaked.
* Move current_mode into the accelerant as the
driver doesn't care.
* Record panel_mode in driver and present to accelerant
* eDP, if no EDID and mobile, leave edid incomplete.
Mode set should notice that and fall back to panel_mode
- Termios: cf{get,set}{i,o}speed can handle arbitrary speed values.
- The value is stored in the appropriate fields of the termios structure
in this case. The old constants (stored in the flags) are preserved
for BeOS binary compatibility.
- Adjust the FTDI FT232* driver to accept custom rates, by replacing the
hardcoded regster values with a function that will compute it
according to FTDI documentation (confirmed giving the same values for
the existing baudrates).
* DisplayPort != DigitalPort
* i2c needs wrapped in DP AUX transaction code
* Mode-setting comes with DP link training as well
* We need to try and share DP code with radeon_hd
* Since the BMediaRecorder have an it's own estabilished policy
relating releasing the producer node we will not interfere with
it except when we are controlled from Cortex.
* This required to review various parts of the code, and
isn't probably still perfect. The main problem was an attributes
hell where redondance created a lot of problems, all this data
is now controlled mostly by the node.
* Header indentation changes needed too.
* This is the only solution that allowed to use the best
of both ways to do this calculus. I've also tested it
with a modified sound player that snoozed every time
the buffer should be handled, and found that neither
of the lateness calculus I tested (including enqueue_time)
really solve all problems. That's why I've tried to find
an average solution. There's still room for improvements
eventually.
* Added a function CopyMailFolderAttributes() that copies the attribute
layout from the text/x-email default query folder.
* This using the new CopyAttributes() method in libshared that is pretty
much a copy of a similar method from copyattr. However, I did not
replace the latter, as that one allows for more fine grained error
reporting (and attribute filtering).
* Closes ticket #3498.
Adopted parent colors for the text view - should not have done so.
Disabled colors were incorrect, so I also corrected those in this patch.
Fixes#12574.
Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
* The direct methods in BMailProtocol now forward the request to the
looper; it's no longer the mail_daemon's responsibility to know
anything about that protocol.
* It's in desperate need of refactoring, but it doesn't hurt to add
it to the repository as is.
The inseparable changes necessary to support live color updating across the
system in a sane, safe, and performant manner.
BView gains:
HasSystemColors()
HasDefaultColors()
AdoptSystemColors()
AdoptParentColors()
AdoptViewColor(BView*)
SetViewUIColor(color_which, float tint)
SetHighUIColor(...
SetLowUIColor(...
ViewUIColor(float* tint)
HighUIColor(...
LowUIColor(...
DelayedInvalidate()
BWindow gains a simple helper method:
IsOffscreenWindow()
BMessage gains:
AddColor()
FindColor()
GetColor()
HasColor() * allegedly this API is deprecated, but I implemented it anyway
ReplaceColor()
SetColor()
Previous private ColorTools methods are made public and moved into GraphicsDefs:
mix_color, blend_color, disable_color
These are fully compatible with BeOS dan0 R5.1 methods and are just code cleanup
of BeOS example code under the OpenTracker license.
In addition, four new colors are created:
B_LINK_TEXT_COLOR
B_LINK_HOVER_COLOR
B_LINK_ACTIVE_COLOR
B_LINK_VISITED_COLOR
These changes are documented in their proper user documentation files.
In addition, due to a history rewrite, B_FOLLOW_LEFT_TOP has been defined and
used in lieu of B_FOLLOW_TOP | B_FOLLOW_LEFT and is included in this commit.
On the app_server side, the following has changed:
Add DelayedMessage - a system by which messages can be sent at a scheduled time,
and can also be merged according to set rules. A single thread is used to service the
message queue and multiple recipients can be set for each message.
Desktop gains the ability to add message ports to a DelayedMessage so that
said messages can target either all applications or all windows, as needed.
Desktop maintains a BMessage which is used to queue up all pending color changes
and the delayed messaging system is used to enact these changes after a short
period of time has passed. This prevents abuse and allows the system to merge
repeated set_ui_color events into one event for client applications, improving
performance drastically.
In addition, B_COLORS_UPDATED is sent to the BApplication, which forwards the message
to each BWindow. This is done to improve performance over having the app_server
independently informing each window.
Decorator changes are live now, which required some reworking.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
* polarity regs move on LVDS vs analog
* add knowledge or transcoder registers, they
exist seperately on PCH-split
* Native resolutions now work on LVDS under i965
Haiku does not yet support certain features related to POSIX threads.
Constants used to test for the presence of these features should
therefore be left undefined, according to the POSIX spec, but are
currently set to -1. This can cause software built on Haiku to
incorrectly detect the presence of these features.
* unistd.h: Undefine _POSIX_THREAD_ATTR_STACKADDR,
_POSIX_THREAD_PRIORITY_SCHEDULING feature constants.
* conf.cpp: __sysconf: Return -1 for unsupported features.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
* IvyBridge or higher can auto-train.
* Linux doesn't use this feature, however
manual FDI link training is *really*
complex... lets try auto-training first.
* I really hope we can kill head_mode some day
* Break pll code out from mode code
* The LVDS and Digital are smooshed together and
likely need broken apart.
* A dependent job was requeued even if it wasn't part of the queue
before. The code relied on dependent jobs being already enqueued;
but that cannot be guaranteed.
* If a job failed, its dependent jobs are now also set to failed, so
that they won't be requeued at a later point.
* This caused some of the "Launching xxx failed: Operation not allowed"
messages in the boot process. Those actually weren't harmless, and
could mess up the natural job order.
* Sticky events are events that keep their signal raised, ie. even if
a job is initialized afterwards, it will still be triggered.
* Consolidated naming for external events.
* Events are now registered once they are actually being used. This
allows them to allocate the resources they need to do their thing.
* No impact to non-ValleyView chipsets
* Bump some register locations for VLV
* Only have HDMI port to test with on my ValleyView GPU
and our driver seems to be missing all HDMI and
sideband functionality.
* As ValleyView chipsets seem to be UEFI only, we don't
have VESA fallback, so this shouldn't cause regressions.
(unless we get UEFI framebuffer support)
* Move to more standardized functions matching AHCI spec
* Don't perform unnecessary double port resets
* Begin implementing a software reset to try first per spec.
Software reset needs more work, falls through to port reset
for the moment which is stable.
* Don't duplicate ATA defines, use what we already provide.
* Tested working on VirtualBox 1-16 AHCI ports, Intel C200,
and AMD FCH.
* Each io_context now has a "inherit_fds" member that decides whether
or not this context allows to inherit FDs to its children.
* This replaces the former O_CLOEXEC mechanism.
* You can specify which borders will be drawn using the
BControlLook::B_TOP_BORDER, ... constants.
* Adapted Mail to no longer need the SetInsets() hack.
* Moved entirely into MainWindow.
* Moved duplicated code into separate methods.
* Resize the main window on larger screens by default, as we can make
use of the extra space.
* Use BWindow::MoveOnScreen() instead of make_sure_frame_is_on_screen()
as the former has more info. And is even smarter now as it can
optionally resize windows to fit on screen.
* Center window on screen by default (ie. when there are no settings).
This introduces a more sane API (currently private) that allows for
safer and possibly more efficient implementations:
* It uses a struct of named and typed function pointers instead of just
a void pointer array. This adds type safety to the callbacks so the
compiler can figure out if things match up before subtle bugs get
introduced.
* It provides bounds for all strings/buffers passed to the callbacks.
* It uses const references instead of implicitly copying arguments.
* It folds stroke_x/fill_x pairs into draw_x functions with a fill
argument to reduce the amount of functions needed.
* It uses unsigned values where negative values make no sense.
The old API has been implemented on top of the new one using adapter
functions. It makes copies of all data passed to the callbacks which
effectively keeps the picture data from being modified. This matches
with the R5 behaviour.
This also reimplements the buffer parsing to be safe against corrupted
data by validating that the types actually fit in the provided sizes
and buffers (using a templated reader).
Since this class is used from the app_server with user provided data,
making it more safe is important even though it comes with a slight
overhead (replicating R5 behaviour, i.e. crashing the app_server when
corrupted data is fed, doesn't seem very appropriate here).
* Added missing const to some getter methods.
* Date() now tries to parse the date of the mail, and return it as
a time_t; you can still retrieve the actual string via
HeaderField("Date") if you have to.
* Mail now shows the time in the local time zone, and with the
current locale.
* While this breaks binary compatibility with earlier Haiku releases,
use values that are less likely to clash with actual use cases.
* Specifically, using a negative spacing is one way to get rid of the
border of BScrollViews, to put them into a window neatly.
* Also, BControlLook now uses a switch to resolve them.
* This has been necessary due to the undefined call order of
of static objects. Fixes#12315.
* The bug has been caused by the linker which free unused resources,
making the BMediaRoster to run in a zombie state. In this state
anything such as a message could make the looper to crash.
* The class is reintroduced with some differences though, we are
going to protect it from another thread calling Roster() while the
BMediaRoster is quitting and implement BMediaRosterEx::Quit.
* Unregister registrar notifications before we quit our thread. Avoid
to uninitialize anything from QuitRequested as it may cause problems.
The POSIX standard requires us to allow assert.h to be included multiple
times with differnt values of NDEBUG. So we can't have a global header
guard on the files. However, we must also make sure that we don't
declare functions multiple times in that case. Re-introduce an header
guard on the part of the file where we declare functions, only.
Fixes lots of warnings when building Netsurf.
It allows to launch the app, but keep its main thread suspended instead
of automatically resuming it.
Also add appThread argument which allows to retrieve the main thread of
the launched team.
2 concrete classes which are currently implemented:
* BSpinner (works on int32s)
* BDecimalSpinner (works on doubles)
In addition BAbstractSpinner now inherits from BControl instead of
BView/BInvoker. This allowed for code simplification at the cost of needing to
cast for the decimal version because SetValue(int32 value) comes from BControl.
Also, add a spinner_button_style enum with 3 options:
* SPINNER_BUTTON_HORIZONTAL_ARROWS
* SPINNER_BUTTON_VERTICAL_ARROWS
* SPINNER_BUTTON_PLUS_MINUS
which sets the spinner arrows to either use horizontal arrows (left/right)
vertical arrows, (up/down), or +/- symbols (the default).
If the spinner button is using horizontal arrows you can decrement and increment
the spinner value by pushing control+left/right, otherwise you can increment and
decrement by pushing up or down. The reason for needing control is so that you
can move the cursor in the textbox otherwise.
Switch the 3 apps that are currently using BSpinners to use the integer variety
in Deskbar preferences, WebPostive preferences, and Screen preferences.
It provides a way for filesystems to cache a lookup failure and
therefore prevents repeated lookups of missing entries. This is a
common scenario for example in command lookup and compiling, where
each directory in PATH or each include directory is searched for the
given entry.
The individual debug heap implementations are now exposed via a
structure of function pointers and a common frontend dispatches the
malloc and malloc_debug APIs through them.
The MALLOC_DEBUG environment variable can be used to select the guarded
heap by adding 'g', otherwise the debug heap is used as the default.
Consequently the separate libroot_guarded is not needed anymore and has
been removed.
To allow the use of environment variables this early, init_env_post_heap
has been added and the heap dependent atfork() moved there. This allowed
to fold the code of init_heap_post_env into init_heap so the former has
been removed.
* Killing the thread leaks resources, and it will terminate cleanly and
safely when the destructor exits anyway.
* Fixes#12293. Thanks to ttcoder, jackburton and bonefish for investigating!
* Does not fix#12286. Going to bissect now...
* The first problem was the O(n^2) complexity of the algorithm, it's
now linear and try to act in a circular way by dispatching
events and reading the port in a balanced way. This exclude
a certain degree of possible deadlocks.
* Add detection and escape when the system try to kill the
thread. This solve some blocking issues on exit et similia
that i had with libjackcompat.
* The algorithm choose soon which event to focus on.
* Lateness is calculated just before the event is dispatched
as it is the more appropriate place, otherwise we would be
calculating something imprecise/guessed.
* Remove timed_event_queue::queued_time. It's more precise to
just use the RealTime() before to Dispatch the event.
* It should solve the BSoundPlayer lateness problems.
* With those improvements the media_kit is not going to lock
completely under stress conditions, instead it try to work
in a best effort shape.
* There's still room for improvements, for example i'm considering some
strategies in lateness situations such as update scheduling latency,
try to decrease waiting time and detect when we are too early on
the other hand to recover when the load go down.
* Thanks to Julian Harnath for sharing his WIP patch which helped
with some controls such as avoiding negative lateness.
* Comments are welcome!
* B_AUTO_UPDATE_SIZE_LIMITS only really makes sense for resizable
windows, and it only sets the minimum/maximum window size.
* ResizeToPreferred() resizes the window to its preferred size, and
also supports height-for-width layouts.
* Due to the needs to provide a peaceful UX, i moved out the
notifications mechanism from the Media preflet and i have
integrated it with the launch and shutdown functions of MediaDefs.h.
* This implied to introduce a new launch_media_server function
similar to the shutdown_media_server allowing to specify a custom
notification function too.
* Both functions then are reworked to send by default notifications
to the Deskbar, this was needed because in a lot of situations
the mechanism failed without correctly noticing the user.
* The one argument launch_media_server is considered to be deprecated,
the default argument is removed to mantain binary compatibility but
make new apps to automatically use the new one with just the default
arguments. This is needed due to conflicts in overloading.
* Improve notifications by indirectly extending localization
to old BeOS apps.
* This is done by watching to registrar notifications
and providing a minimal service to contact the
media roster in private API. The roster use this
service to automatically reconnect to the media_server.
* Improve consistency by adding a BMediaRosterEx destructor
and using it for the specular functionality of ctor instead
to use the father's class destructor.
* Avoid double initialization of MediaInitializer that
becomes MediaRosterUndertaker.
* Remove superfluos call to BMediaRoster::Quit()
in media_addon_server.
* This closes#12114 again; while not POSIX, it's just a line away.
* Removed exect() from the header -- not sure where this came from.
but I can't find anything about it on the net.
* Consolidated use of asterisk style in exec.cpp.
For defining the text that appears alongside the icon.
This function really has too many parameters; we probably should break
it out into a BAction class...
* This also fixes the shutdown process, as the registrar no longer
kills the app_server.
* Removed SERVER_PORT_NAME definition as it has no use anymore.
* When creating the port of the registrar's authentication manager, we
now set it manually, so that the user/group functions work.
* This allows LaunchDaemon::_StartSession() to set up the user, and
groups as needed.
* Instead, the caller should have done this already. This is really
outside of the scope of the launch_daemon.
* Fixed Login with empty passwords; removed the (unused) test login
feature along the way.
* You can now add arbitrarily named fields to the message as well,
without having them all specified in the template.
* Also added a missing converter method that is called when there
are no values to add, and implemented all methods in the base
class, so that you only have to implement the methods you actually
need.
* BRoster now allows settings a "no-registrar" mode that is currently
only honored in _LaunchApp(), though.
* Job::Launch() is now using this, which also allows launching
applications by signature (ie. if the job name matches the
signature, you can omit the "launch" option).
* You can now put jobs/services into a target.
* Instead of having Login started as part of the normal boot process,
it's now in the "login" target.
* The app_server now launches the login target when a login becomes
available (ie. during startup, but that could be improved later on).
* Instead of launching Tracker/Deskbar directly, we now launch the
Login application.
* This will now start a new session for the selected user (the password
is currently ignored).
* When a user session is started, the launch_daemon forks, and the
child then restarts the LaunchDaemon application in user mode.
* It then registers itself with its parent, in order to resolve user
dependent services.
* Added a user launch file that will cause Tracker, and Deskbar to
start in the new session.
* get_roster_port_name() is no longer needed.
* This also removes the app_server restart code from the debug
server -- this will be done by the launch_daemon in the future.
* Instead of letting the kernel search for the syslog port, the
daemon now registers itself with the kernel (which even solves
a TODO).
* A port is created for the actual log messages from the launch_daemon,
and used on start.
* However, the SyslogTest does not yet work, due to the BMessage <->
KMessage communication problems.
* These methods don't really work yet, as BMessage doesn't support
replying with a KMessage; the request is received, but the reply
never gets to the target.
* Dropped "create_port" -- this is now the default for services.
* Additionally (or alternatively, if you use the "legacy" mode), you can
now create named ports, and specify their capacity.
* Added convenience methods to BLaunchRoster that automatically use the
signature of the current be_app.
* BRoster::Launch() cannot be used (yet), as it pre-registers the
application we're launching, and that won't work for the registrar or
anything else until the registrar is up and running.
* Renamed B_GET_LAUNCH_CONNECTIONS to B_GET_LAUNCH_DATA.
* Add the team ID to the get-launch-data reply.
* Added BLaunchRoster::GetPort() for convenience.
* Removed some superfluous debug output, but temporarily dump all stdio
to /dev/dprintf (ie. the syslog).
* Made job matching case insensitive (as MIME types should be).
* This enables a mechanism to profile almost the complete boot process
(starting with main2()), if SYSTEM_PROFILER is defined to 1.
* You can access the profiling data using "profile -r".
* This will be heavily inspired by Apple's launchd, as well as
systemd -- for now it really doesn't do a whole lot, though.
* What works so far: the configuration files are read, parsed, and
the jobs created.
* The jobs are even initialized, and their message ports created.
* BApplication now retrieves a previously created port from the
launch_daemon for use with BServer.
* Only the registrar actually uses this for now.
BColumnListView:
- Add helper method for getting the visible rect of a given field.
Refactor SuggestTextPosition to use it.
{Tree,Table}:
- Add wrapper to retrieve table cell rect using the aforementioned
BCLV helper.
* Address TODO about setting fSelected when nothing is done.
* Pass a pointer to the tab view to the BTab so that it can call Invalidate().
(Checked against BeOS).
* Call Invalidate() from the BTab after SetView() & SetName().
Fixes#12108 & #12196.
The media_server is now able to remember the timesource associated to
a certain registered_node and always remove it when the owner
application crash, Fixes Ticket #11852
* Drop lib/edit and matching bsd header
* Convert Debugger to libedit build package
* Should solve problems with libedit consumers
not defining _BSD_SOURCE
* Progress on #10267
netresolv (and libbind) won't cache DNS requests, which can result in a
lot of DNS requests being made for the same host. Implement a simple
cache in RAM (local to each application) which will keep the most
recently requested addresses cached. This can speed up loading of an
HTTP page a lot, by saving a DNS request for each resource stored on the
same server as the main page.
libbind development was transferred to the NetBSD project at
http://wiki.netbsd.org/individual-software-releases/netresolv/
There isn't an official release yet, but they provide a set of patches
against the latest libbind release.
* Remove all files we don't use
* Merge the changes to the remaining files
* Add some new files we need
* Move getifaddrs implementation to libnetwork (instead of libbnetapi)
so it can be used by netresolv.
Fixes#8293 : netresolv uses getifaddrs to determine if there is a local
IPv6 address. If there is not, it will not return AAAA records.
