Clean up duplicate MID handling, and just send back last response if MID
matches.
Removed COAP_BLOCK_CACHE_RESPONSE as no longer required for duplicate MID
handling, and so no need to send an Empty ACK response for a subsequent
Separate response as a referenced copy of the last PDU respponse is now kept
for a session.
Note that if a request is sent by a proxy to an upstream server, this always
converts the upstream server's response into a Separate response back to the
client as the upstream server may take time to respond, do any error recovery
etc.
This allows (D)TLS1.3 to be negotiated when using PSK.
If '-i match_identity_file' is being used, the hint is taken from the first
entry if not otherwise defined by '-h hint'.
Compiling with gcc-16.1.1 and glibc-2.43 yields warnings: "initialization
discards ‘const’ qualifier from pointer target type".
Indeed, pointer passed to strchr() is `const char *` and memory pointed by
return value of strchr() is never modified, so variable to assign return
value should be `const char *`.
New ./configure option
--with-mbedtls-oscore
If --disable-dtls is set, then MbedTLS is used as the OSCORE backend, otherwise
the MbedTLS library is used for both (D)TLS and OSCORE.
New cmake option
-DOSCORE_BACKEND=mbedtls
If -DENABLE_DTLS=OFF is set, then MbedTLS is used as the OSCORE backend, otherwise
the MbedTLS library is used for both (D)TLS and OSCORE.
New Zephyr option
config MBEDTLS_OSCORE
If set to y and CONFIG_LIBCOAP_OSCORE_SUPPORT is set to y, then the Zephyr MbedTLS
backend will get used for the OSCORE backend (no (D)TLS).
The goal is to extend code coverage of libcoap. Can confirm from local
runs this provides a significant boost to coap_cache.c coverage.
Signed-off-by: David Korczynski <david@adalogics.com>
If both MEMP_USE_CUSTOM_POOLS and MEM_USE_POOLS are defined in
lwipopts.h and there is a suitable
LWIP_MALLOC_MEMPOOL_START .. LWIP_MALLOC_MEMPOOL_END
definition in lwippools.h, then any coap_malloc_type(COAP_STRING, ..) will
make use of the defined pools.
A new src/coap_mem_lwip.c file has been added.
Add reference counting to recipient contexts so they can be safely removed
while still in use by active sessions. Expose callback hooks for credential
lookup, echo, and sequence storage to allow custom backends.
Expand example server to demonstrate the external storage via a simple
file based database. Expand coap_oscore_rcp_conf_t to enable settings
preconfigured echo value, sequence counter and window value as uint64
Enable temporary credentials returned by the find function and are destroyed
after use.
Jon Shallow