feat(protocol): classify poke notification strength

crates/chanora_protocol/src/adapter.rs

@@ -41,6 +41,7 @@ use crate::dto::{
     ChannelId, ChannelInfo, ChatMessage, ClientId, ClientInfo, ClientProfile, MessageTarget,
     ProtocolDelta, ServerActivity, ServerSnapshot,
 };
+use crate::poke_limiter::PokeLimiter;
 use crate::ProtocolError;
 
 const SPEAKING_ACTIVITY_WINDOW: Duration = Duration::from_millis(750);
@@ -713,6 +714,7 @@ async fn connection_task(
     // reply channel — at most 3 s of pending state per move.
     let mut pending_moves: PendingMoves = HashMap::new();
     let mut voice_activity: HashMap<u64, Instant> = HashMap::new();
+    let mut poke_limiter = PokeLimiter::new();
 
     // Main loop: pump events, service requests, forward voice.
     loop {
@@ -742,6 +744,7 @@ async fn connection_task(
                     &channels.activity,
                     &channels.delta,
                     &mut pending_moves,
+                    &mut poke_limiter,
                 ),
             },
             Ok(Some(Err(e))) => {
@@ -841,6 +844,7 @@ async fn connection_task(
                     &channels,
                     &mut pending_moves,
                     &mut voice_activity,
+                    &mut poke_limiter,
                 )
                 .await;
                 let _ = reply.send(r);
@@ -903,6 +907,7 @@ fn handle_non_audio_stream_item(
     activity_tx: &mpsc::Sender<ServerActivity>,
     delta_tx: &mpsc::Sender<ProtocolDelta>,
     pending_moves: &mut PendingMoves,
+    poke_limiter: &mut PokeLimiter,
 ) {
     match item {
         StreamItem::BookEvents(events) => {
@@ -964,19 +969,25 @@ fn handle_non_audio_stream_item(
                     message,
                 } = ev
                 {
-                    let mapped = match target {
-                        tsclientlib::MessageTarget::Server => MessageTarget::Server,
-                        tsclientlib::MessageTarget::Channel => MessageTarget::Channel,
+                    let (mapped, poke_strength) = match target {
+                        tsclientlib::MessageTarget::Server => (MessageTarget::Server, None),
+                        tsclientlib::MessageTarget::Channel => (MessageTarget::Channel, None),
                         tsclientlib::MessageTarget::Client(id) => {
-                            MessageTarget::Client(id.0 as u64)
+                            (MessageTarget::Client(id.0 as u64), None)
+                        }
+                        tsclientlib::MessageTarget::Poke(id) => {
+                            let own_client_id =
+                                con.get_state().ok().map(|state| state.own_client.0 as u64);
+                            let strength = poke_limiter.record(invoker.id.0 as u64, own_client_id);
+                            (MessageTarget::Poke(id.0 as u64), Some(strength))
                         }
-                        tsclientlib::MessageTarget::Poke(id) => MessageTarget::Poke(id.0 as u64),
                     };
                     let _ = chat_tx.try_send(ChatMessage {
                         sender_id: ClientId(invoker.id.0 as u64),
                         sender_name: sanitize(&invoker.name),
                         message: sanitize(&message),
                         target: mapped,
+                        poke_strength,
                     });
                 }
             }
@@ -1164,6 +1175,7 @@ async fn fetch_client_profile(
     channels: &EventChannels,
     pending_moves: &mut PendingMoves,
     voice_activity: &mut HashMap<u64, Instant>,
+    poke_limiter: &mut PokeLimiter,
 ) -> Result<ClientProfile, ProtocolError> {
     let target_id = TsClientId(client_id as u16);
 
@@ -1209,6 +1221,7 @@ async fn fetch_client_profile(
             channels,
             pending_moves,
             voice_activity,
+            poke_limiter,
         )
         .await;
     }
@@ -1219,6 +1232,7 @@ async fn fetch_client_profile(
             channels,
             pending_moves,
             voice_activity,
+            poke_limiter,
         )
         .await;
     }
@@ -1233,6 +1247,7 @@ async fn fetch_client_profile(
             channels,
             pending_moves,
             voice_activity,
+            poke_limiter,
         )
         .await
         {
@@ -1251,6 +1266,7 @@ async fn fetch_client_profile(
             channels,
             pending_moves,
             voice_activity,
+            poke_limiter,
         )
         .await
         {
@@ -1264,9 +1280,16 @@ async fn fetch_client_profile(
     }
 
     let db_info = if refresh_plan.needs_client_db_info {
-        request_client_db_info(con, database_id, channels, pending_moves, voice_activity)
-            .await
-            .ok()
+        request_client_db_info(
+            con,
+            database_id,
+            channels,
+            pending_moves,
+            voice_activity,
+            poke_limiter,
+        )
+        .await
+        .ok()
     } else {
         None
     };
@@ -1426,6 +1449,7 @@ async fn request_messages(
     channels: &EventChannels,
     pending_moves: &mut PendingMoves,
     voice_activity: &mut HashMap<u64, Instant>,
+    poke_limiter: &mut PokeLimiter,
 ) -> Result<Vec<InMessage>, ProtocolError> {
     let handle = command
         .send_with_result(con)
@@ -1468,6 +1492,7 @@ async fn request_messages(
                 &channels.activity,
                 &channels.delta,
                 pending_moves,
+                poke_limiter,
             ),
         }
     }
@@ -1479,6 +1504,7 @@ async fn request_client_db_info(
     channels: &EventChannels,
     pending_moves: &mut PendingMoves,
     voice_activity: &mut HashMap<u64, Instant>,
+    poke_limiter: &mut PokeLimiter,
 ) -> Result<InClientDbInfoPart, ProtocolError> {
     let messages = request_messages(
         con,
@@ -1486,6 +1512,7 @@ async fn request_client_db_info(
         channels,
         pending_moves,
         voice_activity,
+        poke_limiter,
     )
     .await?;
     for message in messages {

crates/chanora_protocol/src/dto.rs

@@ -3,6 +3,8 @@
 
 use serde::{Deserialize, Serialize};
 
+pub use crate::poke_limiter::PokeStrength;
+
 /// Opaque server-side channel identifier. Internal representation is
 /// the upstream u64 but callers must treat it as opaque.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
@@ -54,6 +56,8 @@ pub struct ChatMessage {
     pub message: String,
     /// Target scope of this message.
     pub target: MessageTarget,
+    /// Strength classification for poke notifications.
+    pub poke_strength: Option<PokeStrength>,
 }
 
 /// A server-activity notification derived from TeamSpeak bookkeeping events.

crates/chanora_protocol/src/lib.rs

@@ -35,12 +35,14 @@
 
 mod adapter;
 mod dto;
+pub mod poke_limiter;
 
 pub use adapter::{ConnectConfig, DisconnectReason, InboundVoice, ProtocolClient, SnapshotProbe};
 pub use dto::{
     ChannelId, ChannelInfo, ChatMessage, ClientId, ClientInfo, ClientProfile, MessageTarget,
-    ProtocolDelta, ServerActivity, ServerSnapshot,
+    PokeStrength, ProtocolDelta, ServerActivity, ServerSnapshot,
 };
+pub use poke_limiter::PokeLimiter;
 
 // Re-export the upstream voice types so chanora_audio can build outbound
 // voice packets without taking a direct dependency on tsclientlib /

crates/chanora_protocol/src/poke_limiter.rs

@@ -0,0 +1,174 @@
+//! Per-connection poke strength classification.
+
+use std::collections::HashMap;
+use std::time::{Duration, Instant};
+
+/// Notification strength assigned to an inbound poke.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+pub enum PokeStrength {
+    /// Poke should be surfaced at full strength.
+    Strong,
+    /// Poke is rate-limited but below overflow severity.
+    Suppressed,
+    /// Poke remains suppressed after repeated suppressed pokes.
+    SuppressedOverflow,
+}
+
+/// Per-connection poke limiter.
+#[derive(Debug)]
+pub struct PokeLimiter {
+    window: Duration,
+    entries: HashMap<u64, PokeEntry>,
+}
+
+#[derive(Debug)]
+struct PokeEntry {
+    tokens: u8,
+    last_refill: Instant,
+    suppressed_in_window: u8,
+}
+
+impl PokeLimiter {
+    const CAPACITY: u8 = 2;
+    const OVERFLOW_THRESHOLD: u8 = 3;
+
+    /// Create a limiter using the default five-minute refill interval.
+    pub fn new() -> Self {
+        Self {
+            window: Duration::from_secs(5 * 60),
+            entries: HashMap::new(),
+        }
+    }
+
+    /// Record a poke at the current instant.
+    pub fn record(&mut self, sender_id: u64, own_client_id: Option<u64>) -> PokeStrength {
+        self.record_at(sender_id, own_client_id, Instant::now())
+    }
+
+    /// Record a poke at an injected instant.
+    pub fn record_at(
+        &mut self,
+        sender_id: u64,
+        own_client_id: Option<u64>,
+        now: Instant,
+    ) -> PokeStrength {
+        if own_client_id == Some(sender_id) {
+            return PokeStrength::Suppressed;
+        }
+
+        let entry = self.entries.entry(sender_id).or_insert(PokeEntry {
+            tokens: Self::CAPACITY,
+            last_refill: now,
+            suppressed_in_window: 0,
+        });
+
+        if now.duration_since(entry.last_refill) >= self.window {
+            entry.tokens = Self::CAPACITY;
+            entry.last_refill = now;
+            entry.suppressed_in_window = 0;
+        }
+
+        if entry.tokens > 0 {
+            entry.tokens -= 1;
+            return PokeStrength::Strong;
+        }
+
+        entry.suppressed_in_window = entry.suppressed_in_window.saturating_add(1);
+        if entry.suppressed_in_window >= Self::OVERFLOW_THRESHOLD {
+            PokeStrength::SuppressedOverflow
+        } else {
+            PokeStrength::Suppressed
+        }
+    }
+}
+
+impl Default for PokeLimiter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn first_two_pokes_are_strong_third_is_suppressed() {
+        let mut limiter = PokeLimiter::new();
+        let now = Instant::now();
+
+        assert_eq!(limiter.record_at(7, Some(1), now), PokeStrength::Strong);
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(1)),
+            PokeStrength::Strong
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(2)),
+            PokeStrength::Suppressed
+        );
+    }
+
+    #[test]
+    fn self_poke_is_suppressed_without_consuming_token() {
+        let mut limiter = PokeLimiter::new();
+        let now = Instant::now();
+
+        assert_eq!(limiter.record_at(7, Some(7), now), PokeStrength::Suppressed);
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(1)),
+            PokeStrength::Strong
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(2)),
+            PokeStrength::Strong
+        );
+    }
+
+    #[test]
+    fn overflow_after_three_suppressed_pokes_in_five_minutes() {
+        let mut limiter = PokeLimiter::new();
+        let now = Instant::now();
+
+        assert_eq!(limiter.record_at(7, Some(1), now), PokeStrength::Strong);
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(1)),
+            PokeStrength::Strong
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(2)),
+            PokeStrength::Suppressed
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(3)),
+            PokeStrength::Suppressed
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(4)),
+            PokeStrength::SuppressedOverflow
+        );
+    }
+
+    #[test]
+    fn refill_after_interval_uses_injected_time_without_sleeping() {
+        let mut limiter = PokeLimiter::new();
+        let now = Instant::now();
+
+        assert_eq!(limiter.record_at(7, Some(1), now), PokeStrength::Strong);
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(1)),
+            PokeStrength::Strong
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(2)),
+            PokeStrength::Suppressed
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(5 * 60)),
+            PokeStrength::Strong
+        );
+        assert_eq!(
+            limiter.record_at(7, Some(1), now + Duration::from_secs(5 * 60 + 1)),
+            PokeStrength::Strong
+        );
+    }
+}