v4.4.1

changelog.md

@@ -1,5 +1,28 @@
 # Changelog
 
+## 2026-03-15 - 4.4.1 - fix(remoteingress-core)
+prevent stream data loss by applying backpressure and closing saturated channels
+
+- replace non-blocking frame writes with awaited sends in per-stream tasks so large transfers respect backpressure instead of dropping data
+- close and remove streams when back-channel or data channels fill up to avoid TCP stream corruption from silently dropped frames
+
+## 2026-03-03 - 4.4.0 - feat(remoteingress)
+add heartbeat PING/PONG and liveness timeouts; implement fast-reconnect/backoff reset and JS crash-recovery auto-restart
+
+- protocol: add FRAME_PING and FRAME_PONG and unit tests for ping/pong frames
+- edge (Rust): reset backoff after successful connection, respond to PING with PONG, track liveness via deadline and reconnect on timeout, use Duration/Instant helpers
+- hub (Rust): send periodic PING to edges, handle PONGs, enforce liveness timeout and disconnect inactive edges, use tokio interval and time utilities
+- ts: RemoteIngressEdge and RemoteIngressHub: add crash-recovery auto-restart with exponential backoff and max attempts, save/restore config and allowed edges, register/remove exit handlers, ensure stop() marks stopping and cleans up listeners
+- minor API/typing: introduce TAllowedEdge alias and persist allowed edges for restart recovery
+
+## 2026-02-26 - 4.3.0 - feat(hub)
+add optional TLS certificate/key support to hub start config and bridge
+
+- TypeScript: add tls.certPem and tls.keyPem to IHubConfig and include tlsCertPem/tlsKeyPem in startHub bridge command when both are provided
+- TypeScript: extend startHub params with tlsCertPem and tlsKeyPem and conditionally send them
+- Rust: change HubConfig serde attributes for tls_cert_pem and tls_key_pem from skip to default so absent PEM fields deserialize as None
+- Enables optional provisioning of TLS certificate and key to the hub when provided from the JS side
+
 ## 2026-02-26 - 4.2.0 - feat(core)
 expose edge peer address in hub events and migrate writers to channel-based, non-blocking framing with stream limits and timeouts
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@serve.zone/remoteingress",
-  "version": "4.2.0",
+  "version": "4.4.1",
   "private": false,
   "description": "Edge ingress tunnel for DcRouter - accepts incoming TCP connections at network edge and tunnels them to DcRouter SmartProxy preserving client IP via PROXY protocol v1.",
   "main": "dist_ts/index.js",

rust/crates/remoteingress-core/src/edge.rs

@@ -1,10 +1,12 @@
 use std::collections::HashMap;
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
+use std::time::Duration;
 use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader};
 use tokio::net::{TcpListener, TcpStream};
 use tokio::sync::{mpsc, Mutex, RwLock};
 use tokio::task::JoinHandle;
+use tokio::time::{Instant, sleep_until};
 use tokio_rustls::TlsConnector;
 use tokio_util::sync::CancellationToken;
 use serde::{Deserialize, Serialize};
@@ -202,6 +204,13 @@ async fn edge_main_loop(
         // Cancel connection token to kill all orphaned tasks from this cycle
         connection_token.cancel();
 
+        // Reset backoff after a successful connection for fast reconnect
+        let was_connected = *connected.read().await;
+        if was_connected {
+            backoff_ms = 1000;
+            log::info!("Was connected; resetting backoff to {}ms for fast reconnect", backoff_ms);
+        }
+
         *connected.write().await = false;
         let _ = event_tx.try_send(EdgeEvent::TunnelDisconnected);
         active_streams.store(0, Ordering::Relaxed);
@@ -214,7 +223,7 @@ async fn edge_main_loop(
             EdgeLoopResult::Reconnect => {
                 log::info!("Reconnecting in {}ms...", backoff_ms);
                 tokio::select! {
-                    _ = tokio::time::sleep(std::time::Duration::from_millis(backoff_ms)) => {}
+                    _ = tokio::time::sleep(Duration::from_millis(backoff_ms)) => {}
                     _ = cancel_token.cancelled() => break,
                     _ = shutdown_rx.recv() => break,
                 }
@@ -336,7 +345,7 @@ async fn connect_to_hub_and_run(
                 _ = stun_token.cancelled() => break,
             }
             tokio::select! {
-                _ = tokio::time::sleep(std::time::Duration::from_secs(stun_interval)) => {}
+                _ = tokio::time::sleep(Duration::from_secs(stun_interval)) => {}
                 _ = stun_token.cancelled() => break,
             }
         }
@@ -380,6 +389,11 @@ async fn connect_to_hub_and_run(
         connection_token,
     );
 
+    // Heartbeat: liveness timeout detects silent hub failures
+    let liveness_timeout_dur = Duration::from_secs(45);
+    let mut last_activity = Instant::now();
+    let mut liveness_deadline = Box::pin(sleep_until(last_activity + liveness_timeout_dur));
+
     // Read frames from hub
     let mut frame_reader = FrameReader::new(buf_reader);
     let result = loop {
@@ -387,13 +401,20 @@ async fn connect_to_hub_and_run(
             frame_result = frame_reader.next_frame() => {
                 match frame_result {
                     Ok(Some(frame)) => {
+                        // Reset liveness on any received frame
+                        last_activity = Instant::now();
+                        liveness_deadline.as_mut().reset(last_activity + liveness_timeout_dur);
+
                         match frame.frame_type {
                             FRAME_DATA_BACK => {
-                                // A1: Non-blocking send to prevent head-of-line blocking
+                                // Non-blocking send to prevent head-of-line blocking in the main dispatch loop.
-                                let writers = client_writers.lock().await;
+                                // If the per-stream channel is full, close the stream rather than silently
+                                // dropping data (which would corrupt the TCP stream).
+                                let mut writers = client_writers.lock().await;
                                 if let Some(tx) = writers.get(&frame.stream_id) {
                                     if tx.try_send(frame.payload).is_err() {
-                                        log::warn!("Stream {} back-channel full, dropping frame", frame.stream_id);
+                                        log::warn!("Stream {} back-channel full, closing stream to prevent data corruption", frame.stream_id);
+                                        writers.remove(&frame.stream_id);
                                     }
                                 }
                             }
@@ -420,6 +441,14 @@ async fn connect_to_hub_and_run(
                                     );
                                 }
                             }
+                            FRAME_PING => {
+                                let pong_frame = encode_frame(0, FRAME_PONG, &[]);
+                                if tunnel_writer_tx.try_send(pong_frame).is_err() {
+                                    log::warn!("Failed to send PONG, writer channel full/closed");
+                                    break EdgeLoopResult::Reconnect;
+                                }
+                                log::trace!("Received PING from hub, sent PONG");
+                            }
                             _ => {
                                 log::warn!("Unexpected frame type {} from hub", frame.frame_type);
                             }
@@ -435,6 +464,11 @@ async fn connect_to_hub_and_run(
                     }
                 }
             }
+            _ = &mut liveness_deadline => {
+                log::warn!("Hub liveness timeout (no frames for {}s), reconnecting",
+                    liveness_timeout_dur.as_secs());
+                break EdgeLoopResult::Reconnect;
+            }
             _ = connection_token.cancelled() => {
                 log::info!("Connection cancelled");
                 break EdgeLoopResult::Shutdown;
@@ -604,9 +638,11 @@ async fn handle_client_connection(
                     Ok(0) => break,
                     Ok(n) => {
                         let data_frame = encode_frame(stream_id, FRAME_DATA, &buf[..n]);
-                        // A5: Use try_send to avoid blocking if writer channel is full
+                        // Use send().await for backpressure — this is a per-stream task so
-                        if tunnel_writer_tx.try_send(data_frame).is_err() {
+                        // blocking only stalls this stream, not others. Prevents data loss
-                            log::warn!("Stream {} tunnel writer full, closing", stream_id);
+                        // for large transfers (e.g. 352MB Docker layers).
+                        if tunnel_writer_tx.send(data_frame).await.is_err() {
+                            log::warn!("Stream {} tunnel writer closed, closing", stream_id);
                             break;
                         }
                     }

rust/crates/remoteingress-core/src/hub.rs

@@ -1,8 +1,10 @@
 use std::collections::HashMap;
 use std::sync::Arc;
+use std::time::Duration;
 use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader};
 use tokio::net::{TcpListener, TcpStream};
 use tokio::sync::{mpsc, Mutex, RwLock, Semaphore};
+use tokio::time::{interval, sleep_until, Instant};
 use tokio_rustls::TlsAcceptor;
 use tokio_util::sync::CancellationToken;
 use serde::{Deserialize, Serialize};
@@ -15,9 +17,9 @@ use remoteingress_protocol::*;
 pub struct HubConfig {
     pub tunnel_port: u16,
     pub target_host: Option<String>,
-    #[serde(skip)]
+    #[serde(default)]
     pub tls_cert_pem: Option<String>,
-    #[serde(skip)]
+    #[serde(default)]
     pub tls_key_pem: Option<String>,
 }
 
@@ -407,6 +409,14 @@ async fn handle_edge_connection(
     // A4: Semaphore to limit concurrent streams per edge
     let stream_semaphore = Arc::new(Semaphore::new(MAX_STREAMS_PER_EDGE));
 
+    // Heartbeat: periodic PING and liveness timeout
+    let ping_interval_dur = Duration::from_secs(15);
+    let liveness_timeout_dur = Duration::from_secs(45);
+    let mut ping_ticker = interval(ping_interval_dur);
+    ping_ticker.tick().await; // consume the immediate first tick
+    let mut last_activity = Instant::now();
+    let mut liveness_deadline = Box::pin(sleep_until(last_activity + liveness_timeout_dur));
+
     // Frame reading loop
     let mut frame_reader = FrameReader::new(buf_reader);
 
@@ -415,6 +425,10 @@ async fn handle_edge_connection(
             frame_result = frame_reader.next_frame() => {
                 match frame_result {
                     Ok(Some(frame)) => {
+                        // Reset liveness on any received frame
+                        last_activity = Instant::now();
+                        liveness_deadline.as_mut().reset(last_activity + liveness_timeout_dur);
+
                         match frame.frame_type {
                             FRAME_OPEN => {
                                 // A4: Check stream limit before processing
@@ -462,7 +476,7 @@ async fn handle_edge_connection(
                                     let result = async {
                                         // A2: Connect to SmartProxy with timeout
                                         let mut upstream = tokio::time::timeout(
-                                            std::time::Duration::from_secs(10),
+                                            Duration::from_secs(10),
                                             TcpStream::connect((target.as_str(), dest_port)),
                                         )
                                         .await
@@ -506,9 +520,11 @@ async fn handle_edge_connection(
                                                         Ok(n) => {
                                                             let frame =
                                                                 encode_frame(stream_id, FRAME_DATA_BACK, &buf[..n]);
-                                                            // A5: Use try_send to avoid blocking if writer channel is full
+                                                            // Use send().await for backpressure — this is a per-stream task so
-                                                            if writer_tx.try_send(frame).is_err() {
+                                                            // blocking only stalls this stream, not others. Prevents data loss
-                                                                log::warn!("Stream {} writer channel full, closing", stream_id);
+                                                            // for large transfers (e.g. 352MB Docker layers).
+                                                            if writer_tx.send(frame).await.is_err() {
+                                                                log::warn!("Stream {} writer channel closed, closing", stream_id);
                                                                 break;
                                                             }
                                                         }
@@ -553,11 +569,16 @@ async fn handle_edge_connection(
                                 });
                             }
                             FRAME_DATA => {
-                                // A1: Non-blocking send to prevent head-of-line blocking
+                                // Non-blocking send to prevent head-of-line blocking in the main dispatch loop.
-                                let s = streams.lock().await;
+                                // If the per-stream channel is full, close the stream rather than silently
+                                // dropping data (which would corrupt the TCP stream).
+                                let mut s = streams.lock().await;
                                 if let Some((tx, _)) = s.get(&frame.stream_id) {
                                     if tx.try_send(frame.payload).is_err() {
-                                        log::warn!("Stream {} data channel full, dropping frame", frame.stream_id);
+                                        log::warn!("Stream {} data channel full, closing stream to prevent data corruption", frame.stream_id);
+                                        if let Some((_, token)) = s.remove(&frame.stream_id) {
+                                            token.cancel();
+                                        }
                                     }
                                 }
                             }
@@ -571,6 +592,9 @@ async fn handle_edge_connection(
                                     });
                                 }
                             }
+                            FRAME_PONG => {
+                                log::debug!("Received PONG from edge {}", edge_id);
+                            }
                             _ => {
                                 log::warn!("Unexpected frame type {} from edge", frame.frame_type);
                             }
@@ -586,6 +610,19 @@ async fn handle_edge_connection(
                     }
                 }
             }
+            _ = ping_ticker.tick() => {
+                let ping_frame = encode_frame(0, FRAME_PING, &[]);
+                if frame_writer_tx.try_send(ping_frame).is_err() {
+                    log::warn!("Failed to send PING to edge {}, writer channel full/closed", edge_id);
+                    break;
+                }
+                log::trace!("Sent PING to edge {}", edge_id);
+            }
+            _ = &mut liveness_deadline => {
+                log::warn!("Edge {} liveness timeout (no frames for {}s), disconnecting",
+                    edge_id, liveness_timeout_dur.as_secs());
+                break;
+            }
             _ = edge_token.cancelled() => {
                 log::info!("Edge {} cancelled by hub", edge_id);
                 break;

rust/crates/remoteingress-protocol/src/lib.rs

@@ -7,6 +7,8 @@ pub const FRAME_CLOSE: u8 = 0x03;
 pub const FRAME_DATA_BACK: u8 = 0x04;
 pub const FRAME_CLOSE_BACK: u8 = 0x05;
 pub const FRAME_CONFIG: u8 = 0x06;     // Hub -> Edge: configuration update
+pub const FRAME_PING: u8 = 0x07;       // Hub -> Edge: heartbeat probe
+pub const FRAME_PONG: u8 = 0x08;       // Edge -> Hub: heartbeat response
 
 // Frame header size: 4 (stream_id) + 1 (type) + 4 (length) = 9 bytes
 pub const FRAME_HEADER_SIZE: usize = 9;
@@ -261,6 +263,8 @@ mod tests {
             FRAME_DATA_BACK,
             FRAME_CLOSE_BACK,
             FRAME_CONFIG,
+            FRAME_PING,
+            FRAME_PONG,
         ];
 
         let mut data = Vec::new();
@@ -293,4 +297,19 @@ mod tests {
         assert_eq!(frame.frame_type, FRAME_CLOSE);
         assert!(frame.payload.is_empty());
     }
+
+    #[test]
+    fn test_encode_frame_ping_pong() {
+        // PING: stream_id=0, empty payload (control frame)
+        let ping = encode_frame(0, FRAME_PING, &[]);
+        assert_eq!(ping[4], FRAME_PING);
+        assert_eq!(&ping[0..4], &0u32.to_be_bytes());
+        assert_eq!(ping.len(), FRAME_HEADER_SIZE);
+
+        // PONG: stream_id=0, empty payload (control frame)
+        let pong = encode_frame(0, FRAME_PONG, &[]);
+        assert_eq!(pong[4], FRAME_PONG);
+        assert_eq!(&pong[0..4], &0u32.to_be_bytes());
+        assert_eq!(pong.len(), FRAME_HEADER_SIZE);
+    }
 }

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/remoteingress',
-  version: '4.2.0',
+  version: '4.4.1',
   description: 'Edge ingress tunnel for DcRouter - accepts incoming TCP connections at network edge and tunnels them to DcRouter SmartProxy preserving client IP via PROXY protocol v1.'
 }

ts/classes.remoteingressedge.ts

@@ -40,9 +40,16 @@ export interface IEdgeConfig {
   secret: string;
 }
 
+const MAX_RESTART_ATTEMPTS = 10;
+const MAX_RESTART_BACKOFF_MS = 30_000;
+
 export class RemoteIngressEdge extends EventEmitter {
   private bridge: InstanceType<typeof plugins.smartrust.RustBridge<TEdgeCommands>>;
   private started = false;
+  private stopping = false;
+  private savedConfig: IEdgeConfig | null = null;
+  private restartBackoffMs = 1000;
+  private restartAttempts = 0;
   private statusInterval: ReturnType<typeof setInterval> | undefined;
 
   constructor() {
@@ -109,11 +116,17 @@ export class RemoteIngressEdge extends EventEmitter {
       edgeConfig = config;
     }
 
+    this.savedConfig = edgeConfig;
+    this.stopping = false;
+
     const spawned = await this.bridge.spawn();
     if (!spawned) {
       throw new Error('Failed to spawn remoteingress-bin');
     }
 
+    // Register crash recovery handler
+    this.bridge.on('exit', this.handleCrashRecovery);
+
     await this.bridge.sendCommand('startEdge', {
       hubHost: edgeConfig.hubHost,
       hubPort: edgeConfig.hubPort ?? 8443,
@@ -122,6 +135,8 @@ export class RemoteIngressEdge extends EventEmitter {
     });
 
     this.started = true;
+    this.restartAttempts = 0;
+    this.restartBackoffMs = 1000;
 
     // Start periodic status logging
     this.statusInterval = setInterval(async () => {
@@ -142,6 +157,7 @@ export class RemoteIngressEdge extends EventEmitter {
    * Stop the edge and kill the Rust process.
    */
   public async stop(): Promise<void> {
+    this.stopping = true;
     if (this.statusInterval) {
       clearInterval(this.statusInterval);
       this.statusInterval = undefined;
@@ -152,6 +168,7 @@ export class RemoteIngressEdge extends EventEmitter {
       } catch {
         // Process may already be dead
       }
+      this.bridge.removeListener('exit', this.handleCrashRecovery);
       this.bridge.kill();
       this.started = false;
     }
@@ -170,4 +187,55 @@ export class RemoteIngressEdge extends EventEmitter {
   public get running(): boolean {
     return this.bridge.running;
   }
+
+  /**
+   * Handle unexpected Rust binary crash — auto-restart with backoff.
+   */
+  private handleCrashRecovery = async (code: number | null, signal: string | null) => {
+    if (this.stopping || !this.started || !this.savedConfig) {
+      return;
+    }
+
+    console.error(
+      `[RemoteIngressEdge] Rust binary crashed (code=${code}, signal=${signal}), ` +
+      `attempt ${this.restartAttempts + 1}/${MAX_RESTART_ATTEMPTS}`
+    );
+
+    this.started = false;
+
+    if (this.restartAttempts >= MAX_RESTART_ATTEMPTS) {
+      console.error('[RemoteIngressEdge] Max restart attempts reached, giving up');
+      this.emit('crashRecoveryFailed');
+      return;
+    }
+
+    await new Promise(resolve => setTimeout(resolve, this.restartBackoffMs));
+    this.restartBackoffMs = Math.min(this.restartBackoffMs * 2, MAX_RESTART_BACKOFF_MS);
+    this.restartAttempts++;
+
+    try {
+      const spawned = await this.bridge.spawn();
+      if (!spawned) {
+        console.error('[RemoteIngressEdge] Failed to respawn binary');
+        return;
+      }
+
+      this.bridge.on('exit', this.handleCrashRecovery);
+
+      await this.bridge.sendCommand('startEdge', {
+        hubHost: this.savedConfig.hubHost,
+        hubPort: this.savedConfig.hubPort ?? 8443,
+        edgeId: this.savedConfig.edgeId,
+        secret: this.savedConfig.secret,
+      });
+
+      this.started = true;
+      this.restartAttempts = 0;
+      this.restartBackoffMs = 1000;
+      console.log('[RemoteIngressEdge] Successfully recovered from crash');
+      this.emit('crashRecovered');
+    } catch (err) {
+      console.error(`[RemoteIngressEdge] Crash recovery failed: ${err}`);
+    }
+  };
 }

ts/classes.remoteingresshub.ts

@@ -11,6 +11,8 @@ type THubCommands = {
     params: {
       tunnelPort: number;
       targetHost?: string;
+      tlsCertPem?: string;
+      tlsKeyPem?: string;
     };
     result: { started: boolean };
   };
@@ -42,11 +44,25 @@ type THubCommands = {
 export interface IHubConfig {
   tunnelPort?: number;
   targetHost?: string;
+  tls?: {
+    certPem?: string;
+    keyPem?: string;
+  };
 }
 
+type TAllowedEdge = { id: string; secret: string; listenPorts?: number[]; stunIntervalSecs?: number };
+
+const MAX_RESTART_ATTEMPTS = 10;
+const MAX_RESTART_BACKOFF_MS = 30_000;
+
 export class RemoteIngressHub extends EventEmitter {
   private bridge: InstanceType<typeof plugins.smartrust.RustBridge<THubCommands>>;
   private started = false;
+  private stopping = false;
+  private savedConfig: IHubConfig | null = null;
+  private savedEdges: TAllowedEdge[] = [];
+  private restartBackoffMs = 1000;
+  private restartAttempts = 0;
 
   constructor() {
     super();
@@ -92,29 +108,42 @@ export class RemoteIngressHub extends EventEmitter {
    * Start the hub — spawns the Rust binary and starts the tunnel server.
    */
   public async start(config: IHubConfig = {}): Promise<void> {
+    this.savedConfig = config;
+    this.stopping = false;
+
     const spawned = await this.bridge.spawn();
     if (!spawned) {
       throw new Error('Failed to spawn remoteingress-bin');
     }
 
+    // Register crash recovery handler
+    this.bridge.on('exit', this.handleCrashRecovery);
+
     await this.bridge.sendCommand('startHub', {
       tunnelPort: config.tunnelPort ?? 8443,
       targetHost: config.targetHost ?? '127.0.0.1',
+      ...(config.tls?.certPem && config.tls?.keyPem
+        ? { tlsCertPem: config.tls.certPem, tlsKeyPem: config.tls.keyPem }
+        : {}),
     });
 
     this.started = true;
+    this.restartAttempts = 0;
+    this.restartBackoffMs = 1000;
   }
 
   /**
    * Stop the hub and kill the Rust process.
    */
   public async stop(): Promise<void> {
+    this.stopping = true;
     if (this.started) {
       try {
         await this.bridge.sendCommand('stopHub', {} as Record<string, never>);
       } catch {
         // Process may already be dead
       }
+      this.bridge.removeListener('exit', this.handleCrashRecovery);
       this.bridge.kill();
       this.started = false;
     }
@@ -123,7 +152,8 @@ export class RemoteIngressHub extends EventEmitter {
   /**
    * Update the list of allowed edges that can connect to this hub.
    */
-  public async updateAllowedEdges(edges: Array<{ id: string; secret: string; listenPorts?: number[]; stunIntervalSecs?: number }>): Promise<void> {
+  public async updateAllowedEdges(edges: TAllowedEdge[]): Promise<void> {
+    this.savedEdges = edges;
     await this.bridge.sendCommand('updateAllowedEdges', { edges });
   }
 
@@ -140,4 +170,62 @@ export class RemoteIngressHub extends EventEmitter {
   public get running(): boolean {
     return this.bridge.running;
   }
+
+  /**
+   * Handle unexpected Rust binary crash — auto-restart with backoff.
+   */
+  private handleCrashRecovery = async (code: number | null, signal: string | null) => {
+    if (this.stopping || !this.started || !this.savedConfig) {
+      return;
+    }
+
+    console.error(
+      `[RemoteIngressHub] Rust binary crashed (code=${code}, signal=${signal}), ` +
+      `attempt ${this.restartAttempts + 1}/${MAX_RESTART_ATTEMPTS}`
+    );
+
+    this.started = false;
+
+    if (this.restartAttempts >= MAX_RESTART_ATTEMPTS) {
+      console.error('[RemoteIngressHub] Max restart attempts reached, giving up');
+      this.emit('crashRecoveryFailed');
+      return;
+    }
+
+    await new Promise(resolve => setTimeout(resolve, this.restartBackoffMs));
+    this.restartBackoffMs = Math.min(this.restartBackoffMs * 2, MAX_RESTART_BACKOFF_MS);
+    this.restartAttempts++;
+
+    try {
+      const spawned = await this.bridge.spawn();
+      if (!spawned) {
+        console.error('[RemoteIngressHub] Failed to respawn binary');
+        return;
+      }
+
+      this.bridge.on('exit', this.handleCrashRecovery);
+
+      const config = this.savedConfig;
+      await this.bridge.sendCommand('startHub', {
+        tunnelPort: config.tunnelPort ?? 8443,
+        targetHost: config.targetHost ?? '127.0.0.1',
+        ...(config.tls?.certPem && config.tls?.keyPem
+          ? { tlsCertPem: config.tls.certPem, tlsKeyPem: config.tls.keyPem }
+          : {}),
+      });
+
+      // Restore allowed edges
+      if (this.savedEdges.length > 0) {
+        await this.bridge.sendCommand('updateAllowedEdges', { edges: this.savedEdges });
+      }
+
+      this.started = true;
+      this.restartAttempts = 0;
+      this.restartBackoffMs = 1000;
+      console.log('[RemoteIngressHub] Successfully recovered from crash');
+      this.emit('crashRecovered');
+    } catch (err) {
+      console.error(`[RemoteIngressHub] Crash recovery failed: ${err}`);
+    }
+  };
 }