Iplemented clean DTLS cookie handling. Also certificate check is available, still with a hard-coded pem file.
Iplemented clean DTLS cookie handling.
Also certificate check is available, still with a hard-coded pem file.

FossilOrigin-Name: 2fb98eb2bf9e07bd7f21223dea499a992a7c38c963cfbeabbba2f7aa8ccd82af
7u83/actube,7u83/actube,7u83/actube,7u83/actube,7u83/actube