• _log_exception() : rosbridge_server.autobahn_websocket , rosbridge_server.websocket_handler
• get_ephemeral_port() : rosbridge_server.util
• handle_compression_offers() : rosbridge_websocket
• log_exceptions() : rosbridge_server.autobahn_websocket , rosbridge_server.websocket_handler
• shutdown_hook() : rosbridge_tcp , rosbridge_udp , rosbridge_websocket