dhtrunner: add async version of getPublicAddress

include/opendht/dhtrunner.h

@@ -360,6 +360,7 @@ public:
     std::string getSearchLog(const InfoHash&, sa_family_t af = AF_UNSPEC) const;
     std::vector<SockAddr> getPublicAddress(sa_family_t af = AF_UNSPEC);
     std::vector<std::string> getPublicAddressStr(sa_family_t af = AF_UNSPEC);
+    void getPublicAddress(std::function<void(std::vector<SockAddr>&&)>, sa_family_t af = AF_UNSPEC);
 
     // securedht methods
 

src/dhtrunner.cpp

@@ -594,6 +594,18 @@ DhtRunner::getPublicAddressStr(sa_family_t af)
     return ret;
 }
 
+void
+DhtRunner::getPublicAddress(std::function<void(std::vector<SockAddr>&&)> cb, sa_family_t af)
+{
+    std::lock_guard<std::mutex> lck(storage_mtx);
+    ongoing_ops++;
+    pending_ops_prio.emplace([cb = std::move(cb), this, af](SecureDht& dht){
+        cb(dht.getPublicAddress(af));
+        opEnded();
+    });
+    cv.notify_all();
+}
+
 void
 DhtRunner::registerCertificate(std::shared_ptr<crypto::Certificate> cert) {
     std::lock_guard<std::mutex> lck(dht_mtx);