Event lib support as it has been isn't scaling well, at the low level
libevent and libev headers have a namespace conflict so they can't
both be built into the same image, and at the distro level, binding
all the event libs to libwebsockets.so makes a bloaty situation for
packaging, lws will drag in all the event libs every time.
This patch implements the plan discussed here
https://github.com/warmcat/libwebsockets/issues/1980
and refactors the event lib support so they are built into isolated
plugins and bound at runtime according to what the application says
it wants to use. The event lib plugins can be packaged individually
so that only the needed sets of support are installed (perhaps none
of them if the user code is OK with the default poll() loop). And
dependent user code can mark the specific event loop plugin package
as required so pieces are added as needed.
The eventlib-foreign example is also refactored to build the selected
lib support isolated.
A readme is added detailing the changes and how to use them.
https://libwebsockets.org/git/libwebsockets/tree/READMEs/README.event-libs.md
PARENT_SCOPE needs adjusting in a few places for wolfssl to work, and
we need a second level export of USE_WOLFSSL through lib/CMakeLists.txt
Add noi/f32 Sai build for WOLFSSL + MINIMAL_EXAMPLES
Presently a vh is allocated per trust store at policy parsing-time, this
is no problem on a linux-class device or if you decide you need a dynamic
policy for functionality reasons.
However if you're in a constrained enough situation that the static policy
makes sense, in the case your trust stores do not have 100% duty cycle, ie,
are anyway always in use, the currently-unused vhosts and their x.509 stack
are sitting there taking up heap for no immediate benefit.
This patch modifies behaviour in ..._STATIC_POLICY_ONLY so that vhosts and
associated x.509 tls contexts are not instantiated until a secure stream using
them is created; they are refcounted, and when the last logical secure
stream using a vhost is destroyed, the vhost and its tls context is also
destroyed.
If another ss connection is created that wants to use the trust store, the
vhost and x.509 context is regenerated again as needed.
Currently the refcounting is by ss, it's also possible to move the refcounting
to be by connection. The choice is between the delay to generate the vh
being visisble at logical ss creation-time, or at connection-time. It's anyway
not preferable to have ss instantiated and taking up space with no associated
connection or connection attempt underway.
NB you will need to reprocess any static policies after this patch so they
conform to the trust_store changes.
Add lws_display and minimal example support for esp32-wrover to match wsp32-heltec-wb32
Since no usable buttons that don't affect something else on wrover kit, assumes
a button to 0V on GPIO14.
These are really slow since the processor itself is emulated... if it's broken,
it will break on the most complex configurations, configuration conflicts will
be flushed out by building on native arch anyway. So just build the complex
configuration on Risc-V.
LWS_EXTERN needs to be empty for windows when declaring functions in the
headers. But for data, it needs the explicit extern otherwise on windows
or mingw based builds, it thinks we are redeclaring the data each time.
Esp-idf has an improved but still kind of abused cmake-
based build system now.
If we see ESP_PLATFORM coming as a cmake var, we can know we
are being built from inside the esp-idf config system.
Leave the existing esp32 arrangements alone but triggered off
ESP_PLATFORM, adapt to use the cross toolchain file and
various quirks automatically.
In this way you can build lws a part of your project in a
much cleaner way.
Prepare a minimal esp32 test app for use in Sai
Adapt .sai.json to build for esp32
Replace the bash selftest plumbing with CTest.
To use the selftests, build with -DLWS_WITH_MINIMAL_EXAMPLES=1
and `CTEST_OUTPUT_ON_FAILURE=1 make test` or just
`make test`.
To disable tests that require internet access, also give
-DLWS_CTEST_INTERNET_AVAILABLE=0
Remove travis and appveyor scripts on master.
Remove travis and appveyor decals on README.md.
