From c2b217d5535da1b453c3bc759b60a27198b53e95 Mon Sep 17 00:00:00 2001
From: Jimmy Stridh <jimmystridh@users.noreply.github.com>
Date: Mon, 22 Jun 2026 12:14:23 +0200
Subject: [PATCH] fix: stop sync poller on stopped engineio sockets

---
 socketio/src/client/client.rs     | 113 +++++++++++++++++++++++++-----
 socketio/src/client/raw_client.rs |   4 ++
 2 files changed, 99 insertions(+), 18 deletions(-)

diff --git a/socketio/src/client/client.rs b/socketio/src/client/client.rs
index fe924307..b4dbdd55 100644
--- a/socketio/src/client/client.rs
+++ b/socketio/src/client/client.rs
@@ -218,30 +218,65 @@ impl Client {
             // `Result::Ok`, the server receives a close frame so it's safe to
             // terminate
             for packet in self_clone.iter() {
-                let should_reconnect = match packet {
-                    Err(Error::IncompleteResponseFromEngineIo(_)) => {
-                        //TODO: 0.3.X handle errors
-                        //TODO: logging error
-                        true
-                    }
-                    Ok(Packet {
-                        packet_type: PacketId::Disconnect,
-                        ..
-                    }) => match self_clone.builder.lock() {
-                        Ok(builder) => builder.reconnect_on_disconnect,
-                        Err(_) => false,
-                    },
-                    _ => false,
+                let (reconnect, reconnect_on_disconnect) = match self_clone.builder.lock() {
+                    Ok(builder) => (builder.reconnect, builder.reconnect_on_disconnect),
+                    Err(_) => (false, false),
                 };
-                if should_reconnect {
-                    let _ = self_clone.disconnect();
-                    let _ = self_clone.reconnect();
+
+                match poll_action(&packet, reconnect, reconnect_on_disconnect) {
+                    PollAction::Continue => {}
+                    PollAction::Stop => {
+                        if matches!(packet, Err(Error::StoppedEngineIoSocket)) {
+                            if let Ok(client) = self_clone.client.read() {
+                                let _ = client.notify_close();
+                            }
+                        }
+                        break;
+                    }
+                    PollAction::Reconnect => {
+                        let _ = self_clone.disconnect();
+                        let _ = self_clone.reconnect();
+                    }
                 }
             }
         });
     }
 }
 
+#[derive(Debug, PartialEq, Eq)]
+enum PollAction {
+    Continue,
+    Reconnect,
+    Stop,
+}
+
+fn poll_action(
+    packet: &Result<Packet>,
+    reconnect: bool,
+    reconnect_on_disconnect: bool,
+) -> PollAction {
+    match packet {
+        Err(Error::IncompleteResponseFromEngineIo(_) | Error::StoppedEngineIoSocket) => {
+            if reconnect {
+                PollAction::Reconnect
+            } else {
+                PollAction::Stop
+            }
+        }
+        Ok(Packet {
+            packet_type: PacketId::Disconnect,
+            ..
+        }) => {
+            if reconnect_on_disconnect {
+                PollAction::Reconnect
+            } else {
+                PollAction::Stop
+            }
+        }
+        _ => PollAction::Continue,
+    }
+}
+
 pub(crate) struct Iter {
     socket: Arc<RwLock<RawClient>>,
 }
@@ -266,7 +301,6 @@ impl Iterator for Iter {
         }
     }
 }
-
 #[cfg(test)]
 mod test {
     use std::{
@@ -282,6 +316,49 @@ mod test {
     use std::time::{Duration, SystemTime};
     use url::Url;
 
+    #[test]
+    fn stopped_engineio_socket_stops_polling_when_reconnect_is_disabled() {
+        let packet = Err(Error::StoppedEngineIoSocket);
+
+        assert_eq!(poll_action(&packet, false, false), PollAction::Stop);
+    }
+
+    #[test]
+    fn stopped_engineio_socket_reconnects_when_reconnect_is_enabled() {
+        let packet = Err(Error::StoppedEngineIoSocket);
+
+        assert_eq!(poll_action(&packet, true, false), PollAction::Reconnect);
+    }
+
+    #[test]
+    fn socketio_disconnect_obeys_reconnect_on_disconnect() {
+        let packet = Ok(Packet::new(
+            PacketId::Disconnect,
+            "/".to_owned(),
+            None,
+            None,
+            0,
+            None,
+        ));
+
+        assert_eq!(poll_action(&packet, true, false), PollAction::Stop);
+        assert_eq!(poll_action(&packet, false, true), PollAction::Reconnect);
+    }
+
+    #[test]
+    fn ordinary_packets_keep_polling() {
+        let packet = Ok(Packet::new(
+            PacketId::Event,
+            "/".to_owned(),
+            Some("[\"message\"]".to_owned()),
+            None,
+            0,
+            None,
+        ));
+
+        assert_eq!(poll_action(&packet, false, false), PollAction::Continue);
+    }
+
     #[test]
     #[serial(reconnect)]
     fn socket_io_reconnect_integration() -> Result<()> {
diff --git a/socketio/src/client/raw_client.rs b/socketio/src/client/raw_client.rs
index 9c8ecef2..f8482fae 100644
--- a/socketio/src/client/raw_client.rs
+++ b/socketio/src/client/raw_client.rs
@@ -270,6 +270,10 @@ impl RawClient {
         Ok(())
     }
 
+    pub(crate) fn notify_close(&self) -> Result<()> {
+        self.callback(&Event::Close, "")
+    }
+
     /// Handles the incoming acks and classifies what callbacks to call and how.
     #[inline]
     fn handle_ack(&self, socket_packet: &Packet) -> Result<()> {