Name: Avi Chad-Fiedman UNI: ajc2212
Running Instructions:
- In the src directory, run "make"
- On one machine/terminal, run the command: java InitServer
- On any other number of other machines/terminals run the command: java InitClient
Commands: The following commands work as specified in the assignment description: message broadcast online block NOTE: blocks only persist for the lifetime of the server unblock logout getaddress private
For the P2P Privacy and Consent bonus friend NOTE: users only remain friends for the lifetime of the server unfriend
Bonus 1) P2P Privacy and Consent Implementation: When user A requests the address of user B with "getaddress ", B receives a notification that A would like to privately chat. B can use the "friend " command to allow A to send private messages. A user can disallow another user from sending P2P messages with the command "unfriend ".
Bonus 2) Guaranteed Message Delivery: If the client quits unexpectedly, and another client tries to message the terminated client BEFORE the server detects the dead client, the server will recover and treat the message as an offline message. This is done in handleDirectMessage(Message message) in the Server class. If a ConnectException occurs, then I update the recipient to an offline status and recursively call handleDirectMessage(Message message). The message will then be sent as an offline message.
HeartBeat and Timeout: The client sends a heartbeat message to the server every HEART_RATE (30) seconds. The server checks every 5 seconds to see if it has lost any client's pulse (if it hasn't received a heartbeat in TIMEOUT (45) seconds).