CLI messaging app

Overview

Simple client-server application to practice concurrency in go, and to try building grpc/protobuf-based web app from scratch.

Local usage

make run_server  # terminal 1
make run_client me=bob them=alice  # terminal 2
make run_client me=alice them=bob  # terminal 3
# type and send (\n-delimited) messages in terminals 2,3 :)

Or using docker

make build_server
make build_client
make run_server_d  # runs a detached container
make run_client_d me=alice them=bob  # terminal 1
make run_client_d me=bob them=alice  # terminal 2
# type and send (\n-delimited) messages in terminals 1,2
make stop_server # stop detached server container

Testing

make test

Nice to have in feature

• Nice logging (with timestamps and request tracing)
• Nice CLI interface
  • don't duplicate sent messages, first of all (+)
  • printing
• Perfomance test (how much concurrent chats is it possible to have on one machine, at what RPS responses are noticeably slow)
• External storage
• "Message seen" markers
• Acceptance test (no leaking goroutines/memory)