156       coap_log_warn("%s: '%s'\n", func, gnutls_strerror(ret)); \
269     coap_log_warn("** %s: %s",  in coap_gnutls_audit_log_func()
272     coap_log_warn("** (null): %s", text);  in coap_gnutls_audit_log_func()
347     coap_log_warn("coap_context_set_pki_root_cas: (D)TLS environment "  in coap_dtls_context_set_pki_root_cas()
353     coap_log_warn("coap_context_set_pki_root_cas: ca_file and/or ca_path "  in coap_dtls_context_set_pki_root_cas()
501         coap_log_warn("gnutls_priority_init: Syntax error at: %s\n", err);  in coap_dtls_new_context()
503         coap_log_warn("gnutls_priority_init: %s\n", gnutls_strerror(ret));  in coap_dtls_new_context()
610     coap_log_warn("no PSK available\n");  in psk_client_callback()
815         coap_log_warn("   %s: %s: '%s'\n",  in cert_verify_gnutls()
832         coap_log_warn("   %s: %s: '%s'\n",  in cert_verify_gnutls()
850           coap_log_warn("   %s: %s: '%s'\n",  in cert_verify_gnutls()
864           coap_log_warn("   %s: %s: '%s'\n",  in cert_verify_gnutls()
874       coap_log_warn("   %s: gnutls_certificate_verify_peers() status 0x%x: '%s'\n",  in cert_verify_gnutls()
1054         coap_log_warn("RPK keys cannot be in COAP_PKI_KEY_PEM format\n");  in setup_pki_credentials()
1075         coap_log_warn("gnutls_certificate_set_x509_trust_file: No certificates found\n");  in setup_pki_credentials()
1077         coap_log_warn("%s: '%s'\n",  in setup_pki_credentials()
1217         coap_log_warn("gnutls_certificate_set_x509_trust_mem: No certificates found\n");  in setup_pki_credentials()
1219         coap_log_warn("%s: '%s'\n",  in setup_pki_credentials()
1305         coap_log_warn("gnutls_certificate_set_x509_trust_mem: No certificates found\n");  in setup_pki_credentials()
1307         coap_log_warn("%s: '%s'\n",  in setup_pki_credentials()
1354         coap_log_warn("gnutls_certificate_set_x509_trust_file: No certificates found\n");  in setup_pki_credentials()
1356         coap_log_warn("%s: '%s'\n",  in setup_pki_credentials()
1375       coap_log_warn("gnutls_certificate_set_x509_trust_file: Root CA: No certificates found\n");  in setup_pki_credentials()
1719             coap_log_warn("gnutls_priority_set_direct: Syntax error at: %s\n", err);  in setup_client_ssl_session()
1721             coap_log_warn("gnutls_priority_set_direct: %s\n", gnutls_strerror(ret));  in setup_client_ssl_session()
1945       coap_log_warn("coap_netif_dgrm_write failed (%zd != %zu)\n",  in coap_dgram_write()
2115     coap_log_warn("***%s: Alert '%d': %s\n",  in log_last_alert()
2150     coap_log_warn("Insufficient credentials provided.\n");  in do_gnutls_handshake()
2172     coap_log_warn("Client Certificate requested and required, but not provided\n"  in do_gnutls_handshake()
2181     coap_log_warn("do_gnutls_handshake: session establish "  in do_gnutls_handshake()
2200     coap_log_warn("do_gnutls_handshake: session establish "  in do_gnutls_handshake()
2220     coap_log_warn("do_gnutls_handshake: session establish "  in do_gnutls_handshake()
2311         coap_log_warn("coap_dtls_send: cannot send PDU\n");  in coap_dtls_send()
2451         coap_log_warn("coap_dtls_receive: gnutls_record_recv returned %d\n", ret);  in coap_dtls_receive()
2778         coap_log_warn("coap_tls_write: gnutls_record_send "  in coap_tls_write()
2872         coap_log_warn("coap_tls_read: gnutls_record_recv "  in coap_tls_read()