Messages and concurrency
Winsock TCP carries length-prefixed, typed messages for group/private chat, presence, and system notifications. Receive buffering handles fragmented and coalesced messages; thread-safe queues connect session I/O with event processing.
Client and operation
The Dear ImGui client provides an online-user list and group/private windows, with FMOD notification audio. The server uses TCP 65432 and clients default to localhost for multi-client testing.
This is a coursework communication prototype. Partial-write retries remain a transport limitation, so it should not be treated as a production messaging service. See the README for dependencies and setup.