Jon Shallow 14e75a54b8 net.c: Delay sending ACK until after response_handler() is called ...

In handle_response() the ACK is sent before calling ctx->response_handler() so
if the response_handler() wants to send RST the server ignores it as the ACK
has already been received.

By updating coap_response_handler_t to return a value, this can be used to
send the ACK (return of COAP_RESPONSE_OK) or a RST (return of COAP_RESPONSE_FAIL)
after ctx->response_handler() is called.

include/coap2/net.h:
man/coap_handler.txt.in:

Create a new enum coap_response_t for use as the return value for
coap_response_handler_t.
Update coap_response_handler_t and associated documentation.

src/net.c:

Send CoAP ACK or RST depending on return value of ctx->response_handler().

examples/client.c:

Update message_handler() to use the new coap_response_handler_t return values
(coap_response_t).

2021-02-24 09:37:32 +00:00

..

coap2

net.c: Delay sending ACK until after response_handler() is called

2021-02-24 09:37:32 +00:00