clear cache on failure

repertory/librepertory/src/comm/packet/packet_client.cpp

@@ -58,6 +58,7 @@ void packet_client::close_all() {
   }
 
   clients_.clear();
+  io_context_ = boost::asio::io_context{};
   unique_id_ = utils::create_uuid_string();
 }
 
@@ -77,6 +78,7 @@ void packet_client::connect(client &cli) {
     }
   } catch (const std::exception &e) {
     utils::error::raise_error(function_name, e, "connection handshake failed");
+    resolve_results_.clear();
   }
 }