[riot-notifications] [RIOT-OS/RIOT] net/gcoap: support DTLS (#15549)

János Brodbeck notifications at github.com
Wed May 26 13:31:31 CEST 2021


@janosbrodbeck commented on this pull request.



> + * @}
+ */
+
+#include "net/dsm.h"
+#include "mutex.h"
+#include "net/sock/util.h"
+#include "xtimer.h"
+
+#define ENABLE_DEBUG 0
+#include "debug.h"
+
+typedef struct {
+    sock_dtls_t *sock;
+    sock_dtls_session_t session;
+    dsm_state_t state;
+    uint64_t last_used;

Will add unit. ms accuracy is sufficient. With ms we would have an overflow after 18 days? Right now there is now session timeout, so theoretically a session could be kept longer. The standard recommends to time out sessions after a maximum of 24h hours. With 32 bit, wouldn't we need two 32 bit values then? One for `established_ms` and one for `last_used_ms`, for the case when the current runtime of the device is longer than 18 days?

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