README.md

tcp_echo_server_et

TCP echo server using edge-triggered (ET) epoll/kqueue with SO_REUSEPORT across worker event loops:

./build/tcp_echo_server_et [port=8888] [worker_count] [business_worker_count]

./build/tcp_echo_server_et 8888
nc 127.0.0.1 8888

Key differences from tcp_echo_server (LT):

• async_accept_et() — drains the accept queue in one batch, returns std::vector<TcpSocket>
• async_read_et() — edge-triggered read, loops recv until EAGAIN to drain the socket buffer
• Write stays LT (async_write) to avoid the classic ET write race