pub struct ProtocolEventGraph {
channel: ChannelPtr,
event_graph: EventGraphPtr,
ev_put_sub: MessageSubscription<EventPut>,
ev_req_sub: MessageSubscription<EventReq>,
ev_rep_sub: MessageSubscription<EventRep>,
tip_req_sub: MessageSubscription<TipReq>,
_tip_rep_sub: MessageSubscription<TipRep>,
malicious_count: AtomicUsize,
jobsman: ProtocolJobsManagerPtr,
broadcaster_push: Sender<EventPut>,
broadcaster_pull: Receiver<EventPut>,
}
Expand description
P2P protocol implementation for the Event Graph.
Fields§
§channel: ChannelPtr
Pointer to the connected peer
event_graph: EventGraphPtr
Pointer to the Event Graph instance
ev_put_sub: MessageSubscription<EventPut>
MessageSubscriber
for EventPut
ev_req_sub: MessageSubscription<EventReq>
MessageSubscriber
for EventReq
ev_rep_sub: MessageSubscription<EventRep>
MessageSubscriber
for EventRep
tip_req_sub: MessageSubscription<TipReq>
MessageSubscriber
for TipReq
_tip_rep_sub: MessageSubscription<TipRep>
MessageSubscriber
for TipRep
malicious_count: AtomicUsize
Peer malicious message count
jobsman: ProtocolJobsManagerPtr
P2P jobs manager pointer
broadcaster_push: Sender<EventPut>
To apply the rate-limit, we don’t broadcast directly but instead send into the sending queue.
broadcaster_pull: Receiver<EventPut>
Receive send requests and rate-limit broadcasting them.
Implementations§
Source§impl ProtocolEventGraph
impl ProtocolEventGraph
pub async fn init( event_graph: EventGraphPtr, channel: ChannelPtr, ) -> Result<ProtocolBasePtr>
async fn increase_malicious_count(self: Arc<Self>) -> Result<()>
Sourceasync fn handle_event_put(self: Arc<Self>) -> Result<()>
async fn handle_event_put(self: Arc<Self>) -> Result<()>
Protocol function handling EventPut
.
This is triggered whenever someone broadcasts (or relays) a new
event on the network.
Sourceasync fn handle_event_req(self: Arc<Self>) -> Result<()>
async fn handle_event_req(self: Arc<Self>) -> Result<()>
Protocol function handling EventReq
.
This is triggered whenever someone requests an event from us.
Sourceasync fn handle_tip_req(self: Arc<Self>) -> Result<()>
async fn handle_tip_req(self: Arc<Self>) -> Result<()>
Protocol function handling TipReq
.
This is triggered when someone requests the current unreferenced
tips of our DAG.
Sourceasync fn broadcast_rate_limiter(self: Arc<Self>) -> Result<()>
async fn broadcast_rate_limiter(self: Arc<Self>) -> Result<()>
We need to rate limit message propagation so malicious nodes don’t get us banned for flooding. We do that by aggregating messages here into a queue then apply rate limit logic before broadcasting.
The rate limit logic is this:
- If the count is less then RATELIMIT_MIN_COUNT then do nothing.
- Otherwise sleep for
sleep_time
ms.
To calculate the sleep time, we use the RATELIMIT_SAMPLE_* values. For example RATELIMIT_SAMPLE_IDX = 10, RATELIMIT_SAMPLE_SLEEP = 1000 means that when N = 10, then sleep for 1000 ms.
Let RATELIMIT_MIN_COUNT = 6, then here’s a table of sleep times:
Count | Sleep Time / ms |
---|---|
0 | 0 |
4 | 0 |
6 | 0 |
10 | 1000 |
14 | 2000 |
18 | 3000 |
So we use the sample to calculate a straight line from RATELIMIT_MIN_COUNT.
Trait Implementations§
Auto Trait Implementations§
impl !Freeze for ProtocolEventGraph
impl !RefUnwindSafe for ProtocolEventGraph
impl Send for ProtocolEventGraph
impl Sync for ProtocolEventGraph
impl !Unpin for ProtocolEventGraph
impl !UnwindSafe for ProtocolEventGraph
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