diff --git a/src/Djitellowhite/Djitellowhite.cpp b/src/Djitellowhite/Djitellowhite.cpp
index 9ebb3b5..c8a8f52 100644
--- a/src/Djitellowhite/Djitellowhite.cpp
+++ b/src/Djitellowhite/Djitellowhite.cpp
@@ -75,9 +75,49 @@ void* Tello::udp_response_receiver(void* arg){
 		}
 	}
 }
+void Tello::forward(sockaddr_in serveraddr){
+	char tmp[15] = {"forward 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "forward successfully!" <<endl;
+}
+void Tello::back(sockaddr_in serveraddr){
+	char tmp[15] = {"back 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "back successfully!" <<endl;
+}
+void Tello::left(sockaddr_in serveraddr){
+	char tmp[15] = {"left 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "left successfully!" <<endl;
+}
+void Tello::right(sockaddr_in serveraddr){
+	char tmp[15] = {"right 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "right successfully!" <<endl;
+}
+void Tello::up(sockaddr_in serveraddr){
+	char tmp[15] = {"up 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "up successfully!" <<endl;
+}
+void Tello::down(sockaddr_in serveraddr){
+	char tmp[15] = {"down 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "down successfully!" <<endl;
+}
+void Tello::cw(sockaddr_in serveraddr){
+	char tmp[15] = {"cw 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "cw successfully!" <<endl;
+}
+void Tello::ccw(sockaddr_in serveraddr){
+	char tmp[15] = {"ccw 20"};
+	send_message(tmp,serveraddr,0);// 0 -> timeout
+	cout << "ccw successfully!" <<endl;
+}
 void Tello::get_video(sockaddr_in serveraddr){
 	
-	char tmp[10] = {"streamon"};
+	char tmp[15] = {"streamon"};
 	send_message(tmp,serveraddr,0);
 	cout << "stream_on successfully!" <<endl;
 	this->stream_on = true;
diff --git a/src/Djitellowhite/Djitellowhite.h b/src/Djitellowhite/Djitellowhite.h
index b311e46..bfaa936 100644
--- a/src/Djitellowhite/Djitellowhite.h
+++ b/src/Djitellowhite/Djitellowhite.h
@@ -61,6 +61,14 @@ public:
 	void get_connect(sockaddr_in serveraddr);
 	void takeoff(sockaddr_in serveraddr);
 	void land(sockaddr_in serveraddr);
+	void forward(sockaddr_in serveraddr);
+	void back(sockaddr_in serveraddr);
+	void left(sockaddr_in serveraddr);
+	void right(sockaddr_in serveraddr);
+	void up(sockaddr_in serveraddr);
+	void down(sockaddr_in serveraddr);
+	void cw(sockaddr_in serveraddr);
+	void ccw(sockaddr_in serveraddr);
 	bool send_message(char* msg,sockaddr_in server_addr,int timeout = RESPONSE_TIMEOUT);
 	static void *udp_response_receiver(void* arg);
 	void get_video(sockaddr_in serveraddr);
diff --git a/src/Djitellowhite/Djitellowhite.o b/src/Djitellowhite/Djitellowhite.o
index 0fae4ce..12a9638 100644
Binary files a/src/Djitellowhite/Djitellowhite.o and b/src/Djitellowhite/Djitellowhite.o differ
diff --git a/src/Djitellowhite/test b/src/Djitellowhite/test
index f35b81f..a041d3c 100755
Binary files a/src/Djitellowhite/test and b/src/Djitellowhite/test differ