• CertificateFormat_ : coap_dtls_gnutls.c
• coap_asn1_privatekey_type_t : coap_dtls.h
• coap_dtls_role_t : coap_dtls.h
• coap_log_t : coap_debug.h
• coap_memory_tag_t : mem.h
• coap_nack_reason_t : coap_io.h
• coap_pki_key_t : coap_dtls.h
• coap_uri_scheme_t : uri.h
• CredentialType : coap_dtls_gnutls.c
• filter_op_t : option.c
• respond_t : net.c