158 static int send_dg(ResState* statp, res_params* params, span<const uint8_t> msg, span<uint8_t> ans,
160 static int send_vc(ResState* statp, res_params* params, span<const uint8_t> msg, span<uint8_t> ans,
162 static int send_mdns(ResState* statp, span<const uint8_t> msg, span<uint8_t> ans, int* terrno,
439 int res_nsend(ResState* statp, span<const uint8_t> msg, span<uint8_t> ans, int* rcode,  in res_nsend()  argument
444     if (ans.size() < HFIXEDSZ) {  in res_nsend()
453     ResolvCacheStatus cache_status = resolv_cache_lookup(statp->netid, msg, ans, &anslen, flags);  in res_nsend()
456         HEADER* hp = (HEADER*)(void*)ans.data();  in res_nsend()
476         resplen = send_mdns(statp, msg, ans, &terrno, rcode);  in res_nsend()
491             res_pquery(ans.first(resplen));  in res_nsend()
494                 resolv_cache_add(statp->netid, msg, std::span(ans.data(), resplen));  in res_nsend()
517                                      Slice(ans.data(), ans.size()), rcode, &fallback);  in res_nsend()
520             res_pquery(ans.first(resplen));  in res_nsend()
522                 resolv_cache_add(statp->netid, msg, ans.first(resplen));  in res_nsend()
600                 resplen = send_vc(statp, &params, msg, ans, &terrno, ns, rcode);  in res_nsend()
612                 resplen = send_dg(statp, &params, msg, ans, &terrno, &actualNs, &useTcp,  in res_nsend()
667             res_pquery(ans.first(resplen));  in res_nsend()
670                 resolv_cache_add(statp->netid, msg, std::span(ans.data(), resplen));  in res_nsend()
708 static int send_vc(ResState* statp, res_params* params, span<const uint8_t> msg, span<uint8_t> ans,  in send_vc()  argument
711     HEADER* anhp = (HEADER*)(void*)ans.data();  in send_vc()
820     cp = ans.data();  in send_vc()
845     uint16_t resplen = ntohs(*reinterpret_cast<const uint16_t*>(ans.data()));  in send_vc()
846     if (resplen > ans.size()) {  in send_vc()
849         len = ans.size();  in send_vc()
861     cp = ans.data();  in send_vc()
878         len = resplen - ans.size();  in send_vc()
888         LOG(WARNING) << __func__ << ": resplen " << resplen << " exceeds buf size " << ans.size();  in send_vc()
890         resplen = ans.size();  in send_vc()
901         res_pquery({ans.data(), resplen});  in send_vc()
1027                          span<uint8_t> ans, int* receivedFromNs) {  in ignoreInvalidAnswer()  argument
1029     HEADER* anhp = (HEADER*)(void*)ans.data();  in ignoreInvalidAnswer()
1040     if (!res_queriesmatch(msg.data(), msg.data() + msg.size(), ans.data(),  in ignoreInvalidAnswer()
1041                           ans.data() + ans.size())) {  in ignoreInvalidAnswer()
1085 static int send_dg(ResState* statp, res_params* params, span<const uint8_t> msg, span<uint8_t> ans,  in send_dg()  argument
1146                     recvfrom(fd, ans.data(), ans.size(), 0, (sockaddr*)(void*)&from, &fromlen);  in send_dg()
1159             if (resplen > static_cast<ptrdiff_t>(ans.size())) {  in send_dg()
1164             if (needRetry = ignoreInvalidAnswer(statp, from, msg, ans, &receivedFromNs);  in send_dg()
1166                 res_pquery(ans.first(resplen));  in send_dg()
1170             HEADER* anhp = (HEADER*)(void*)ans.data();  in send_dg()
1176                 res_pquery(ans.first(resplen));  in send_dg()
1185                 res_pquery(ans.first(resplen));  in send_dg()
1211 static int send_mdns(ResState* statp, span<const uint8_t> msg, span<uint8_t> ans, int* terrno,  in send_mdns()  argument
1237     int resplen = recvfrom(fd, ans.data(), ans.size(), 0, (sockaddr*)(void*)&from, &fromlen);  in send_mdns()
1251     HEADER* anhp = (HEADER*)(void*)ans.data();  in send_mdns()
1459                      span<uint8_t> ans, int* rcode, uint32_t flags,  in resolv_res_nsend()  argument
1465     return res_nsend(&res, msg, ans, rcode, flags);  in resolv_res_nsend()