Description : Using ROS make a chatroom for users where they can view and send messages that all users can see. Ensure that the chat room has at least 3 users/nodes that connect to the same. Approach: There is a node which acts as both publisher and subscriber. It can send messages to the other two users as well as groupchat node as a publisher. It can also receive messages from the other 2 users along with their usernames as a subscriber. There is a node which acts as the main groupchat that displays username of the sender along with their message. This groupchat node acts only as a subscriber of the other 3 users.

Rostopic List: /group_chat /rosout /rosout_agg

Rosmsg list: std_msgs/String Rosservice list: /group_chat_subscriber/get_loggers /group_chat_subscriber/set_logger_level /rosout/get_loggers /rosout/set_logger_level /user1/get_loggers /user1/set_logger_level /user2/get_loggers /user2/set_logger_level /user3/get_loggers /user3/set_logger_level

RQT Graph has been attached.

Youtube Link : https://youtu.be/YL47fk-DagY