32-bit Debian doesn't have these included by other includes
already and needs them explicitly.

https://github.com/warmcat/libwebsockets/issues/2095

Signed-off-by: krismattheus <kris.mattheus@visionbms.com>

AG: various fixes and adaptation of test protocol to use ring lock
to protect global wsi list against modifications from other threads
while in use

With SMP + event lib, extra locking is required when dealing with cross-thread
adoption case, and cross-vhost cases like wsi close, we need to hold the pt or
context lock.

These lock apis are NOPs when LWS_MAX_SMP == 1 which is the default.

This lets you find out the SMP Thread Service Index (tsi) that a wsi
is bound to.  This allows you to, eg, filter a global wsi list so
you can find the ones that exist in your service thread context.

Together with the new lws_wsi_tsi(wsi) this lets the WAIT_CANCELLED
callback understand its tsi context, the broadcasts are done for each
pt / loop.

Now we're also looking at SMP + event lib, SMP locking pieces are
going to be needed for import into the event lib plugins if built
as plugins.

The cmake define isn't exported, and msvc objects to void * comparision to
non void *.

Also dump the callback pointer with any errors, since after looking it up
in your mapfile this is usually enough to understand which sul and when it
was set.

Add a return code NOTHING_WE_SHOULD_DO indicating that the
extension determined by ext-specific means its operation was
disabled on this frame.

https://github.com/warmcat/libwebsockets/issues/2076

pt->events became an array

Rather than a magic port, let's have lwip pick the port for
the UDP cancel "pipe", so no chance of conflict.

Fix build failure against Atmel ASF3 SDK that does not provide a file
API conforming to POSIX.

libwebsockets/lib/core/libwebsockets.c: In function 'lws_open':
libwebsockets/lib/core/libwebsockets.c:187:18: error: 'O_CREAT' undeclared (first use in this function)
  if (((__oflag & O_CREAT) == O_CREAT)
                  ^~~~~~~

https://github.com/warmcat/libwebsockets/issues/2072

Next release of cmake will choke by default if minimum version < 2.8.12

In the case http client doesn't get a response and closes, currently
it is confused, it reports it as a CLIENT_CONNECTION_ERROR but then
also a CLOSED_CLIENT_HTTP.

Adapt the logic so we only go that way for ws connection... not getting
the server headers means not reaching ESTABLISHED, which makes it a
CCE not a CLOSE.

Also make sure we never issue a CLOSE type callback if we issued a CCE.

Currently only the low 8 bits of an SS state are proxied in a total packet
length of 8 octets.  Keep that format and behaviour since all the defined
states fit in 8 bits, but also allow for 32-bit states using a packet length
of 11 octets with the same command.

This lets us proxy user states (from http mapping) which start at a user
base of 1000.

EXTERNAL_POLL is not recommended for use for a while, it's a hack to allow
integration of lws with random application poll() loops.

While lws is very happy to do that secondary job for any event lib using the
foreign loop support (for uv, event, glib, and ev), for random roll-your-
own poll() waits there's no api because there's no event lib.  The solution
with a future is upgrade your application to use an event loop.

The test app that supports EXTERNAL_POLL was broken in Apr 2018, so it's
apparently good news nobody has been using it in new implementations
since then.  This patch adds in the missing pieces so we can test it until
it is formally deprecated.

Since 425da070 LWS_PTHR_FLAGS is no longer
used, so just remove it.

afunix.h doesn't exist on mingw.

ws32 and friends must come after the openssl libs,
and pthread is required for openssl.

It doesn't work with 4.3.3