Changes to support UDNS.

src/command_tracker.cc

@@ -1,8 +1,10 @@
 #include "config.h"
 
 #include <cstdio>
+#include <netdb.h>
 #include <rak/address_info.h>
 #include <rak/error_number.h>
+#include <torrent/net/resolver.h>
 #include <torrent/tracker/dht_controller.h>
 #include <torrent/tracker/tracker.h>
 #include <torrent/utils/log.h>
@@ -23,20 +25,6 @@ tracker_set_enabled(torrent::tracker::Tracker* tracker, bool state) {
     tracker->disable();
 }
 
-struct call_add_node_t {
-  call_add_node_t(int port) : m_port(port) { }
-
-  void operator() (const sockaddr* sa, [[maybe_unused]] int err) {
-    if (sa == NULL) {
-      lt_log_print(torrent::LOG_DHT_WARN, "Could not resolve host.");
-    } else {
-      torrent::dht_controller()->add_node(sa, m_port);
-    }
-  }
-
-  int m_port;
-};
-
 torrent::Object
 apply_dht_add_node(const std::string& arg) {
   if (!torrent::dht_controller()->is_valid())
@@ -56,7 +44,16 @@ apply_dht_add_node(const std::string& arg) {
   if (port < 1 || port > 65535)
     throw torrent::input_error("Invalid port number.");
 
-  torrent::connection_manager()->resolver()(host, (int)rak::socket_address::pf_inet, SOCK_DGRAM, call_add_node_t(port));
+  // Currently discarding SOCK_STREAM.
+  torrent::main_thread()->resolver()->resolve_specific(nullptr, host, PF_INET, [port](torrent::c_sa_shared_ptr sa, int err) {
+      if (sa == nullptr) {
+        lt_log_print(torrent::LOG_DHT_WARN, "Could not resolve host: %s", gai_strerror(err));
+        return;
+      }
+
+      torrent::dht_controller()->add_node(sa.get(), port);
+  });
+
   return torrent::Object();
 }