Several new ops are planned for tls... so better to bite the bullet and
clean it out to the same level as roles + event-libs first.
Also adds a new travis target "mbedtls" and all the tests except
autobahn against mbedtls build.
Since new roles may be incompatible with http, add support for
alpn names at the role struct, automatic generation of the
default list of alpn names that servers advertise, and the
ability to override the used alpn names per-vhost and per-
client connection.
This not only lets you modulate visibility or use of h2,
but also enables vhosts that only offer non-http roles,
as well as restricting http role vhosts to only alpn
identifiers related to http roles.
This adds h2 http support for the client api.
The public client api requires no changes, it will detect by
ALPN if the server can handle http/2, if so, it will use it.
Multiple client connections using the lws api will be mapped on
to the same single http/2 + tls socket using http/2 streams
that are serviced simultaneously where possible.
This just supports "http/1.1" alpn and lets the client know it
can use keepalive earlier if it affirmitively negotiated
"http/1.1" on alpn.
mbedTLS wrapper needed a small adaptation to also allow
per-client-ssl control of the alpn negotiation list.
AG: unlike openssl, mbedtls does not load the system trust store.
So this change will make client tls operations that work OK on openssl fail on
mbedtls unless you provide the correct CA cert.
This allows lws to distinguish between untrusted CAs, hostname
mismatches, expired certificates.
NOTE: LCCSCF_ALLOW_SELFSIGNED actually allows for untrusted CAs, and
will also skip hostname verification. This is somewhat a limitiation of
the current lws verification process.
AG: improve error reporting up to the CLIENT_CONNECTION_ERROR argument
and add a note specific to mbedtls in the test client. Adapt the test
client to note the CA requirement if built with mbedTLS. Adapt the
minimal test clients to have the CAs available and use them if mbedTLS.
1) Introduce LWS_WITH_GCOV to build with gcc / clang coverage instrumentation.
$ cd build
$ make clean && rm -f `find . -name "*.gcno" -o -name "*.gcda"` && make -j16 && sudo make install && sudo /usr/local/bin/libwebsockets-test-server -s
...
$ gcov `find . -name *.c.gcno | grep -v test-apps` -b | sed "/\.h.\$/,/^$/d"
The above are available in two helper scripts
- scripts/build-gcov.sh
- scripts/gcov.sh
2)
CMake defaults changed:
- LWS_WITH_ZIP_FOPS: OFF
- LWS_WITH_RANGES: OFF
- LWS_WITHOUT_EXTENSIONS: ON
- LWS_WITH_ZLIB: OFF
New CMake controls that default-OFF:
- LWS_WITH_GENHASH
- LWS_WITH_GENRSA
these are implied by LWS_WITH_JWS (which is implied by LWS_WITH_ACME)
3) rename ./lib/tls/XXX/server.c and client.c to XXX-server.c / XXX-client.c.
This is because gcov dumps its results using the .c filename part only,
the copies overwrite each other if there are different .c files in the tree
with the same filename part.
4) Add onetime test-client mode and test to ./test-apps/attack.sh
5) Add gcov howto in READMEs/README.build.md using attack.sh
