Jon Shallow

Also correct LwIP build directory.

Define PBUF_POOL_BUFSIZE appropriately in lwipopts.h

Add new option WARNING_TO_ERROR for CMakeLists.txt Includes cmake builds for Windows and macOS [Fix coap-client S_ISDIR() duplication bug]

Assemble all the blocks before checking for Observe registration or de-registration. Track all the tokens used for the large FETCH registration and re-use them for the de-registration as the server...

[Bug]: Variable size typo in GetCipherSpec()

2

### Contact Details _No response_ ### Version Latest master 851f0590239475be5f00858123a5ded4e0a21c3f ### Description Cut and paste typo on src/keys.c (fix does not change the iv_size), replace GCM with CCM where appropriate....

Remove all references to Posix functions, using Sock functions as appropriate. Update coap_address_t to be RIOT specific when doing RIOT builds.

pkg/libcoap: Add in libcoap CoAP library support

15

### Contribution description Adds in support for using the libcoap CoAP library with version 4.3.4, as per https://github.com/obgm/libcoap with documentation at https://libcoap.net/doc/reference/develop/ . `pkg/libcoap` contains the information for the libcoap...