9  * RFC 6763 - DNS-Based Service Discovery\n
133 /* Lookup for service types */
135 /* Lookup for instances of service */
137 /* Lookup for location of service instance */
139 /* Lookup for text info on service instance */
160 /** Description of a service */
164   /** Name of service, like 'myweb' */
166   /** Type of service, like '_http' */
167   char service[MDNS_LABEL_MAXLEN + 1];  member
176   /** Port of the service */
257   /* Reply bitmask per service */
489  * @param service The service to build TXT record for
492 mdns_prepare_txtdata(struct mdns_service *service)  in mdns_prepare_txtdata()  argument
494   memset(&service->txtdata, 0, sizeof(struct mdns_domain));  in mdns_prepare_txtdata()
495   if (service->txt_fn) {  in mdns_prepare_txtdata()
496     service->txt_fn(service, service->txt_userdata);  in mdns_prepare_txtdata()
635  * Build domain name for a service
637  * @param service The service struct, containing service name, type and protocol
638  * @param include_name Whether to include the service name in the domain
639  * @return ERR_OK if domain was written. If service name is included,
644 mdns_build_service_domain(struct mdns_domain *domain, struct mdns_service *service, int include_nam…  in mdns_build_service_domain()  argument
650     res = mdns_domain_add_label(domain, service->name, (u8_t)strlen(service->name));  in mdns_build_service_domain()
653   res = mdns_domain_add_label(domain, service->service, (u8_t)strlen(service->service));  in mdns_build_service_domain()
655 …res = mdns_domain_add_label(domain, dnssd_protos[service->proto], (u8_t)strlen(dnssd_protos[servic…  in mdns_build_service_domain()
730  * Check which replies we should send for a service based on question
731  * @param service A registered MDNS service
736 check_service(struct mdns_service *service, struct mdns_rr_info *rr)  in check_service()  argument
750     /* Request for all service types */  in check_service()
754   res = mdns_build_service_domain(&mydomain, service, 0);  in check_service()
757     /* Request for the instance of my service */  in check_service()
761   res = mdns_build_service_domain(&mydomain, service, 1);  in check_service()
763     /* Request for info about my service */  in check_service()
1216 mdns_add_servicetype_ptr_answer(struct mdns_outpacket *reply, struct mdns_service *service)  in mdns_add_servicetype_ptr_answer()  argument
1219   mdns_build_service_domain(&service_type, service, 0);  in mdns_add_servicetype_ptr_answer()
1221   LWIP_DEBUGF(MDNS_DEBUG, ("MDNS: Responding with service type PTR record\n"));  in mdns_add_servicetype_ptr_answer()
1222 …return mdns_add_answer(reply, &service_dnssd, DNS_RRTYPE_PTR, DNS_RRCLASS_IN, 0, service->dns_ttl,…  in mdns_add_servicetype_ptr_answer()
1227 mdns_add_servicename_ptr_answer(struct mdns_outpacket *reply, struct mdns_service *service)  in mdns_add_servicename_ptr_answer()  argument
1230   mdns_build_service_domain(&service_type, service, 0);  in mdns_add_servicename_ptr_answer()
1231   mdns_build_service_domain(&service_instance, service, 1);  in mdns_add_servicename_ptr_answer()
1232   LWIP_DEBUGF(MDNS_DEBUG, ("MDNS: Responding with service name PTR record\n"));  in mdns_add_servicename_ptr_answer()
1233 …return mdns_add_answer(reply, &service_type, DNS_RRTYPE_PTR, DNS_RRCLASS_IN, 0, service->dns_ttl, …  in mdns_add_servicename_ptr_answer()
1238 …uct mdns_outpacket *reply, u16_t cache_flush, struct mdns_host *mdns, struct mdns_service *service)  in mdns_add_srv_answer()  argument
1242   mdns_build_service_domain(&service_instance, service, 1);  in mdns_add_srv_answer()
1253   srvdata[2] = lwip_htons(service->port);  in mdns_add_srv_answer()
1255 …add_answer(reply, &service_instance, DNS_RRTYPE_SRV, DNS_RRCLASS_IN, cache_flush, service->dns_ttl,  in mdns_add_srv_answer()
1261 mdns_add_txt_answer(struct mdns_outpacket *reply, u16_t cache_flush, struct mdns_service *service)  in mdns_add_txt_answer()  argument
1264   mdns_build_service_domain(&service_instance, service, 1);  in mdns_add_txt_answer()
1265   mdns_prepare_txtdata(service);  in mdns_add_txt_answer()
1267 …add_answer(reply, &service_instance, DNS_RRTYPE_TXT, DNS_RRCLASS_IN, cache_flush, service->dns_ttl,  in mdns_add_txt_answer()
1268                          (u8_t *) &service->txtdata.name, service->txtdata.length, NULL);  in mdns_add_txt_answer()
1311   struct mdns_service *service;  in mdns_send_outpacket()  local
1364   /* Write answers to service questions */  in mdns_send_outpacket()
1366     service = mdns->services[i];  in mdns_send_outpacket()
1367     if (!service) {  in mdns_send_outpacket()
1372       res = mdns_add_servicetype_ptr_answer(outpkt, service);  in mdns_send_outpacket()
1380       res = mdns_add_servicename_ptr_answer(outpkt, service);  in mdns_send_outpacket()
1388       res = mdns_add_srv_answer(outpkt, outpkt->cache_flush, mdns, service);  in mdns_send_outpacket()
1396       res = mdns_add_txt_answer(outpkt, outpkt->cache_flush, service);  in mdns_send_outpacket()
1413     service = mdns->services[i];  in mdns_send_outpacket()
1414     if (!service) {  in mdns_send_outpacket()
1419       /* Our service instance requested, include SRV & TXT  in mdns_send_outpacket()
1422         res = mdns_add_srv_answer(outpkt, outpkt->cache_flush, mdns, service);  in mdns_send_outpacket()
1430         res = mdns_add_txt_answer(outpkt, outpkt->cache_flush, service);  in mdns_send_outpacket()
1438     /* If service instance, SRV, record or an IP address is requested,  in mdns_send_outpacket()
1564   struct mdns_service *service;  in mdns_handle_question()  local
1601       service = mdns->services[i];  in mdns_handle_question()
1602       if (!service) {  in mdns_handle_question()
1605       reply.serv_replies[i] |= check_service(service, &q.info);  in mdns_handle_question()
1692       service = mdns->services[i];  in mdns_handle_question()
1693       if (!service) {  in mdns_handle_question()
1696       match = reply.serv_replies[i] & check_service(service, &ans.info);  in mdns_handle_question()
1697       if (match && (ans.ttl > (service->dns_ttl / 2))) {  in mdns_handle_question()
1709               res = mdns_build_service_domain(&my_ans, service, 0);  in mdns_handle_question()
1711                 LWIP_DEBUGF(MDNS_DEBUG, ("MDNS: Skipping known answer: service type PTR\n"));  in mdns_handle_question()
1716               res = mdns_build_service_domain(&my_ans, service, 1);  in mdns_handle_question()
1718                 LWIP_DEBUGF(MDNS_DEBUG, ("MDNS: Skipping known answer: service name PTR\n"));  in mdns_handle_question()
1743             if (len != sizeof(field16) || lwip_ntohs(field16) != service->port) {  in mdns_handle_question()
1757           mdns_prepare_txtdata(service);  in mdns_handle_question()
1758           if (service->txtdata.length == ans.rd_length &&  in mdns_handle_question()
1759               pbuf_memcmp(pkt->pbuf, ans.rd_offset, service->txtdata.name, ans.rd_length) == 0) {  in mdns_handle_question()
1827         struct mdns_service* service = mdns->services[i];  in mdns_handle_response()  local
1828         if (!service) {  in mdns_handle_response()
1831         res = mdns_build_service_domain(&domain, service, 1);  in mdns_handle_response()
1833           LWIP_DEBUGF(MDNS_DEBUG, ("MDNS: Probe response matches service domain!"));  in mdns_handle_response()
1969     struct mdns_service* service = mdns->services[i];  in mdns_send_probe()  local
1970     if (!service) {  in mdns_send_probe()
1973     mdns_build_service_domain(&domain, service, 1);  in mdns_send_probe()
2127     struct mdns_service *service = mdns->services[i];  in mdns_resp_remove_netif()  local
2128     if (service) {  in mdns_resp_remove_netif()
2129       mem_free(service);  in mdns_resp_remove_netif()
2178  * Add a service to the selected network interface.
2179  * @param netif The network interface to publish this service on
2180  * @param name The name of the service
2181  * @param service The service type, like "_http"
2182  * @param proto The service protocol, DNSSD_PROTO_TCP for TCP ("_tcp") and DNSSD_PROTO_UDP
2184  * @param port The port the service listens to
2185  * @param dns_ttl Validity time in seconds to send out for service data in DNS replies
2189  * @return service_id if the service was added to the netif, an err_t otherwise
2192 mdns_resp_add_service(struct netif *netif, const char *name, const char *service, enum mdns_sd_prot…  in mdns_resp_add_service()  argument
2205 …LWIP_ERROR("mdns_resp_add_service: Service too long", (strlen(service) <= MDNS_LABEL_MAXLEN), retu…  in mdns_resp_add_service()
2214 …LWIP_ERROR("mdns_resp_add_service: Service list full (increase MDNS_MAX_SERVICES)", (slot >= 0), r…  in mdns_resp_add_service()
2220   MEMCPY(&srv->service, service, LWIP_MIN(MDNS_LABEL_MAXLEN, strlen(service)));  in mdns_resp_add_service()
2236  * Delete a service on the selected network interface.
2237  * @param netif The network interface on which service should be removed
2238  * @param slot The service slot number returned by mdns_resp_add_service
2239  * @return ERR_OK if the service was removed from the netif, an err_t otherwise
2249 …LWIP_ERROR("mdns_resp_del_service: Invalid Service ID", (slot >= 0) && (slot < MDNS_MAX_SERVICES),…  in mdns_resp_del_service()
2250 …LWIP_ERROR("mdns_resp_del_service: Invalid Service ID", (mdns->services[slot] != NULL), return ERR…  in mdns_resp_del_service()
2260  * Update name for an MDNS service.
2262  * @param slot The service slot number returned by mdns_resp_add_service
2263  * @param name The new name for the service
2264  * @return ERR_OK if name could be set on service, an err_t otherwise
2279 …LWIP_ERROR("mdns_resp_rename_service: Invalid Service ID", (slot >= 0) && (slot < MDNS_MAX_SERVICE…  in mdns_resp_rename_service()
2280 …LWIP_ERROR("mdns_resp_rename_service: Invalid Service ID", (mdns->services[slot] != NULL), return …  in mdns_resp_rename_service()
2296  * @param service The service provided to the get_txt callback
2302 mdns_resp_add_service_txtitem(struct mdns_service *service, const char *txt, u8_t txt_len)  in mdns_resp_add_service_txtitem()  argument
2305   LWIP_ASSERT("mdns_resp_add_service_txtitem: service != NULL", service);  in mdns_resp_add_service_txtitem()
2308   return mdns_domain_add_label(&service->txtdata, txt, txt_len);  in mdns_resp_add_service_txtitem()