67 /* Handle support for more than one server via SNTP_MAX_SERVERS */
245 /** The currently used server (initialized to 0) */
261 /** Saves the last server address to compare with response */
266 /** Saves the last timestamp sent (which is sent back by the server)
333  * Initialize request struct to be sent to server.
393  * try the next server or retry the current server and increase the retry
394  * timeout if only one server is available.
416       LWIP_DEBUGF(SNTP_DEBUG_STATE, ("sntp_try_next_server: Sending request to server %"U16_F"\n",  in sntp_try_next_server()
418       /* new server: reset retry timeout */  in sntp_try_next_server()
420       /* instantly send a request to the next server */  in sntp_try_next_server()
425   /* no other valid server found */  in sntp_try_next_server()
430 /* Always retry on error if only one server is supported */
448   /* check server address and port */  in sntp_recv()
465           /* Kiss-of-death packet. Use another server or increase UPDATE_DELAY. */  in sntp_recv()
507     /* indicate that server responded */  in sntp_recv()
527       /* Kiss-of-death packet. Use another server or increase UPDATE_DELAY. */  in sntp_recv()
535 /** Actually send an sntp request to a server.
537  * @param server_addr resolved IP address of the SNTP server
549     LWIP_DEBUGF(SNTP_DEBUG_STATE, ("sntp_send_request: Sending request to server\n"));  in sntp_send_request()
560     /* set up receive timeout: try next server or retry on timeout */  in sntp_send_request()
563     /* save server address to verify it in sntp_recv */  in sntp_send_request()
576  * DNS found callback when using DNS names as server address.
586     LWIP_DEBUGF(SNTP_DEBUG_STATE, ("sntp_dns_found: Server address resolved, sending request\n"));  in sntp_dns_found()
590     /* DNS resolving failed -> try another server */  in sntp_dns_found()
591 …_DEBUG_WARN_STATE, ("sntp_dns_found: Failed to resolve server address resolved, trying next server…  in sntp_dns_found()
610   /* initialize SNTP server address */  in sntp_request()
619       LWIP_DEBUGF(SNTP_DEBUG_STATE, ("sntp_request: Waiting for server address to be resolved.\n"));  in sntp_request()
632     LWIP_DEBUGF(SNTP_DEBUG_TRACE, ("sntp_request: current server address is %s\n",  in sntp_request()
636     /* address conversion failed, try another server */  in sntp_request()
637 …LWIP_DEBUGF(SNTP_DEBUG_WARN_STATE, ("sntp_request: Invalid server address, trying next server.\n")…  in sntp_request()
739  * Gets the server reachability shift register as described in RFC 5905.
741  * @param idx the index of the NTP server
755  * Config SNTP server handling by IP address, name, or DHCP; clear table
756  * @param set_servers_from_dhcp enable or disable getting server addresses from dhcp
773  * @param idx the index of the NTP server to set must be < SNTP_MAX_SERVERS
774  * @param server IP address of the NTP server to set
777 sntp_setserver(u8_t idx, const ip_addr_t *server)  in sntp_setserver()  argument
781     if (server != NULL) {  in sntp_setserver()
782       sntp_servers[idx].addr = (*server);  in sntp_setserver()
796  * @param num the index of the NTP server to set must be < SNTP_MAX_SERVERS
797  * @param server IP address of the NTP server to set
800 dhcp_set_ntp_servers(u8_t num, const ip4_addr_t *server)  in dhcp_set_ntp_servers()  argument
802   LWIP_DEBUGF(SNTP_DEBUG_TRACE, ("sntp: %s %u.%u.%u.%u as NTP server #%u via DHCP\n",  in dhcp_set_ntp_servers()
804 …                 ip4_addr1(server), ip4_addr2(server), ip4_addr3(server), ip4_addr4(server), num));  in dhcp_set_ntp_servers()
809       ip_addr_copy_from_ip4(addr, server[i]);  in dhcp_set_ntp_servers()
823  * @param idx the index of the NTP server
824  * @return IP address of the indexed NTP server or "ip_addr_any" if the NTP
825  *         server has not been configured by address (or at all).
840  * @param idx the index of the NTP server to set must be < SNTP_MAX_SERVERS
841  * @param server DNS name of the NTP server to set, to be resolved at contact time
844 sntp_setservername(u8_t idx, const char *server)  in sntp_setservername()  argument
848     sntp_servers[idx].name = server;  in sntp_setservername()
855  * @param idx the index of the NTP server
856  * @return IP address of the indexed NTP server or NULL if the NTP
857  *         server has not been configured by name (or at all)