This patch adapts the recent change about serializing the number of
simultaneous tls handshakes allowed to 1, so you can set the number in the
context creation info, and the accounting for it is handled by counters
same as the overally tls restriction.
The name of the context info var to control it changes to simultaneous_ssl_handshake_restriction
which is now a count, the default 0 means no limit.
The count rejects tls connection attempts when the tls borrow is attempted,
and separately hands back the hs borrow from the tls borrow when the
connection attempt fails or succeeds.
Add support for dynamically determining the CAs needed to validate server
certificates. This allows you to avoid instantiating > 120 X.509 trusted
CA certs and have them take up heap the whole time.
Works for both openssl and mbedtls.
See READMEs/README.jit-trust.md for the documentation
You likely want the next patch for http redirect enhancements as well.
This is complicated by the fact extern on a function declaration implies
visibility... we have to make LWS_EXTERN empty when building static.
And, setting target_compile_definitions() doesn't work inside macros,
so it has to be set explicitly for the plugins.
Checking the symbol status needs nm -C -D as per
https://stackoverflow.com/questions/37934388/symbol-visibility-not-working-as-expected
after this patch, libwebsockets.a shows no symbols when checked like that and
the static-linked minimal examples only show -U for their other dynamic
imports.
In a handful of cases we use LWS_EXTERN on extern data declarations,
those then need to change to explicit extern.
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
