package server import ( "github.com/gorilla/websocket" "github.com/nspcc-dev/neo-go/pkg/rpc/response" ) type ( // subscriber is an event subscriber. subscriber struct { writer chan<- *websocket.PreparedMessage ws *websocket.Conn // These work like slots as there is not a lot of them (it's // cheaper doing it this way rather than creating a map), // pointing to EventID is an obvious overkill at the moment, but // that's not for long. feeds [maxFeeds]response.EventID } ) const ( // Maximum number of subscriptions per one client. maxFeeds = 16 // This sets notification messages buffer depth, it may seem to be quite // big, but there is a big gap in speed between internal event processing // and networking communication that is combined with spiky nature of our // event generation process, which leads to lots of events generated in // short time and they will put some pressure to this buffer (consider // ~500 invocation txs in one block with some notifications). At the same // time this channel is about sending pointers, so it's doesn't cost // a lot in terms of memory used. notificationBufSize = 1024 )