mongoose/docs/c-api/mg_mqtt_server.h/struct_mg_mqtt_session.md

title	decl_name	symbol_kind	signature
struct mg_mqtt_session	struct mg_mqtt_session	struct	struct mg_mqtt_session { struct mg_mqtt_broker *brk; /* Broker */ LIST_ENTRY(mg_mqtt_session) link; /* mg_mqtt_broker::sessions linkage */ struct mg_connection *nc; /* Connection with the client */ size_t num_subscriptions; /* Size of `subscriptions` array */ void *user_data; /* User data */ struct mg_mqtt_topic_expression *subscriptions; };

MQTT session (Broker side).