tcp_client: close connections when leaving

So you can join another game latter
fix #251

SourceX/dvlnet/tcp_client.cpp

@@ -17,6 +17,7 @@ int tcp_client::create(std::string addrstr, std::string passwd)
 		local_server.reset(new tcp_server(ioc, addrstr, port, passwd));
 		return join(local_server->localhost_self(), passwd);
 	} catch (std::system_error &e) {
+		eprintf("%s\n", e.what());
 		return -1;
 	}
 }
@@ -33,6 +34,7 @@ int tcp_client::join(std::string addrstr, std::string passwd)
 		asio::ip::tcp::no_delay option(true);
 		sock.set_option(option);
 	} catch (std::exception &e) {
+		eprintf("%s\n", e.what());
 		return -1;
 	}
 	start_recv();
@@ -104,5 +106,11 @@ void tcp_client::send(packet &pkt)
 	});
 }
 
+bool tcp_client::SNetLeaveGame(int type){
+	if(sock.is_open())
+		sock.close();
+	return true;
+}
+
 } // namespace net
 } // namespace dvl

SourceX/dvlnet/tcp_client.h

@@ -19,6 +19,7 @@ class tcp_client : public base {
 public:
 	int create(std::string addrstr, std::string passwd);
 	int join(std::string addrstr, std::string passwd);
+	virtual bool SNetLeaveGame(int type);
 
 	constexpr static unsigned short default_port = 6112;