Here is a list of all functions with links to the files they belong to:

• describe_policy() : tls_policy_example.cpp
• main() : connection_pool.cpp, grpc_service_example.cpp, http_facade_example.cpp, network_metrics_example.cpp, network_tracing_example.cpp, observer_pattern.cpp, quic_facade_example.cpp, tcp_client.cpp, tcp_echo_server.cpp, thread_integration_example.cpp, tls_policy_example.cpp, udp_echo.cpp, unified_messaging_example.cpp, websocket_chat.cpp
• run_client() : udp_echo.cpp, websocket_chat.cpp
• run_server() : udp_echo.cpp, websocket_chat.cpp
• signal_handler() : tcp_echo_server.cpp
• simulate_cache_lookup() : network_tracing_example.cpp
• simulate_database_query() : network_tracing_example.cpp