pub unsafe extern "C" fn coap_context_set_csm_max_message_size(
context: *mut coap_context_t,
csm_max_message_size: u32,
)pub unsafe extern "C" fn coap_context_set_csm_max_message_size(
context: *mut coap_context_t,
csm_max_message_size: u32,
)