If --enable-add-default-names is set (the default), then the installed default
libraries and installed default example executables will point to the
appropriate object that has the (D)TLS library type in the name. E.g.
libcoap-3.so -> libcoap-3-openssl.so
coap-client -> coap-client-openssl
If --enable-add-default-names is not set, then this will not happen.
As well as the libraries, the example binaries are now created with the (D)TLS
library extension in all cases.
The CoAP resource management is based on uthash and utlist for
platform POSIX but used a custom list implementation for Contiki.
This modification replaces the list handling by utlist macros
entirely. A set of convenience macros has been defined to access
the resources stored in a CoAP context with respect to the
preprocessor symbol COAP_RESOURCES_NOHASH.
The parser iterator did not break up URIs correctly. As this
cannot be fixed easily, the parser iterator has been removed.
coap_split_path_impl() now operates directly on the message
buffer instead of the iterator abstraction.
This bug also caused t_parse_uri12() in the URI test suite
to fail.
* Removed tne preprocessor defines for coap_tick() and coap_clock_init() --
this made the code less readable and seemed to be of little use.
* Introduced the new type coap_time_t to represent wall clock time. On POSIX,
this is the number of seconds since the epoch, while on embedded systems
without a real time clock, this could be the number of seconds since the
last reboot. The new function coap_ticks_to_rt() is used to convert
coap_tick_t to coap_time.h. Currently, this is a division by COAP_TICKS_PER_SECOND
on all platforms.
* POSIX: coap_tick_t is now defined as unsigned long to avoid overflows in
coap_ticks().
It was noted on the mailing list that the changed retransmission
timeout calculation in commit 1a28b3 may yield to inefficient code
on embedded systems which have no fpu. This change now uses
fixed point arithmetic instead. By default, it represents ACK_TIMEOUT
and ACK_RANDOM_FACTOR as Q2.6 numbers and uses Q0.8 for the
randomness parameter. The resulting timeout value is represented in
system ticks (i.e. a multiple of COAP_TICKS_PER_SECOND) as an
unsigned integer.
coap_insert() now appends every item at the list's end, sorting must
be done explicitly using LL_SORT. As a side-effect, the new
implementation makes valgrind happy :-)
The retransmission timeout is more accurate now by using floating point
arithmetic.
For better readability, the parameter names from RFC 7252 are used.
Adding and removal of observes is now handled by libcoap. The application's
GET handler only needs to add the Observe option (see server.c:hnd_get_time()).
This new behavior is described in Section 4.6 of draft-ietf-core-observe-12.
The idea is to send a response with code 7.31 and the token to identify
the subscription.
This change provides basic support for block-wise transfer of resource
descriptions. print_wellknown() now takes an additional parameter that
specifies the offset in the resource description where output shall start.
coap_print_link() has been modified to truncate resource descriptions that
do not fit in the given buffer (instead of failing with an error code as
was the case before).
Jon Shallow