This version of DuckChat uses multiple servers for scalability and supports inter-server communication. Separate broadcast trees are formed for each channel where nodes in the tree are servers listening to that channel. To guard against loops, inter-server messages include a unique identifier (generated randmly from /dev/urandom). Removing unnecessary servers from a channel is done in a lazy fashion. When a server is a leaf in tree with no users, it removes itself from the tree. To guard against network failures, every server renews its subscriptions once per minute.
- Use the Makefile to compile
- To start server
./server server_host_name port_name [server1_host_name server1_port_name server2_host_name server2_port_name ...servern_host_name servern_port_name] - To start client
./client server_host_name port_name user_name
/exit: Logout the user and exit the client software./join channel: Join (subscribe in) the named channel, creating the channel if it does not exist./leave channel: Leave the named channel./list: List the names of all channels./who channel: List the users who are on the named channel./switch channel: Switch to an existing channel that user has already joined.