tools: catch exceptions

tools/dhtchat.cpp

@@ -62,6 +62,7 @@ main(int argc, char **argv)
 #endif
 
     DhtRunner dht;
+    try {
         dht.run(params.port, dht::crypto::generateIdentity("DHT Chat Node"), true, params.network);
 
         if (not params.bootstrap.first.empty())
@@ -137,6 +138,9 @@ main(int argc, char **argv)
                 }
             }
         }
+    } catch(const std::exception&e) {
+        std::cerr << std::endl <<  e.what() << std::endl;
+    }
 
     std::cout << std::endl <<  "Stopping node..." << std::endl;
     dht.join();

tools/dhtscanner.cpp

@@ -85,6 +85,7 @@ main(int argc, char **argv)
     }
 
     DhtRunner dht;
+    try {
         dht.run(params.port, {}, true, params.network);
 
         if (not params.bootstrap.first.empty())
@@ -114,6 +115,9 @@ main(int argc, char **argv)
         std::cout << std::endl << "Scan ended: " << all_nodes->size() << " nodes found." << std::endl;
         for (const auto& n : *all_nodes)
             std::cout << "Node " << *n << std::endl;
+    } catch(const std::exception&e) {
+        std::cerr << std::endl <<  e.what() << std::endl;
+    }
 
     dht.join();
 #ifdef WIN32_NATIVE