dns: use undeprecated c-ares API

c-ares marked `ares_process()` deprecated in 1.28.1 in this change, we use `ares_process_fd()` in favor of the deprecated `ares_process()`. Refs scylladb#2197 Signed-off-by: Kefu Chai <[email protected]>
tchaikov · Oct 6, 2024 · fdaa6c0 · fdaa6c0
1 parent a30ec0c
commit fdaa6c0
Showing 1 changed file with 7 additions and 14 deletions.
diff --git a/src/net/dns.cc b/src/net/dns.cc
@@ -614,30 +614,23 @@ dns_resolver::impl::poll_sockets() {
 
         n = 0;
 
-        for (auto & p : _sockets) {
-            auto & e = p.second;
-            auto fd = p.first;
-            auto r = FD_ISSET(p.first, &readers);
-            auto w = FD_ISSET(p.first, &writers);
+        for (auto& [fd, e] : _sockets) {
+            auto r = FD_ISSET(fd, &readers);
+            auto w = FD_ISSET(fd, &writers);
             auto ra = e.avail & POLLIN;
             auto wa = e.avail & POLLOUT;
 
             dns_log.trace("fd {} {}{}/{}{}", fd, (r ? "r" : ""),
                             (w ? "w" : ""), (ra ? "r" : ""),
                             (wa ? "w" : ""));
 
-            if (!wa) {
-                FD_CLR(fd, &writers);
-            }
-            if (!ra) {
-                FD_CLR(fd, &readers);
-            }
-            if (FD_ISSET(fd, &writers) || FD_ISSET(fd, &readers)) {
+            ares_socket_t read_fd = r && ra ? fd : ARES_SOCKET_BAD;
+            ares_socket_t write_fd = w && wa ? fd : ARES_SOCKET_BAD;
+            if (reader_fd != ARES_SOCKET_BAD || write_fd != ARES_SOCKET_BAD) {
+                ares_process_fd(_channel, read_fd, write_fd);
                 ++n;
             }
         }
-
-        ares_process(_channel, &readers, &writers);
     } while (n != 0);
 }