fix(rustproxy-http): improve HTTP/3 connection reuse and clean up stale proxy state

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartproxy',
-  version: '26.2.3',
+  version: '26.2.4',
   description: 'A powerful proxy package with unified route-based configuration for high traffic management. Features include SSL/TLS support, flexible routing patterns, WebSocket handling, advanced security options, and automatic ACME certificate management.'
 }

ts/proxies/smart-proxy/datagram-handler-server.ts

@@ -26,6 +26,8 @@ interface IDatagramRelayMessage {
  * - TS→Rust: { type: "reply", sourceIp, sourcePort, destPort, payloadBase64 }
  */
 export class DatagramHandlerServer {
+  private static readonly MAX_BUFFER_SIZE = 50 * 1024 * 1024; // 50 MB
+
   private server: plugins.net.Server | null = null;
   private connection: plugins.net.Socket | null = null;
   private socketPath: string;
@@ -100,6 +102,11 @@ export class DatagramHandlerServer {
 
     socket.on('data', (chunk: Buffer) => {
       this.readBuffer = Buffer.concat([this.readBuffer, chunk]);
+      if (this.readBuffer.length > DatagramHandlerServer.MAX_BUFFER_SIZE) {
+        logger.log('error', `DatagramHandlerServer: buffer exceeded ${DatagramHandlerServer.MAX_BUFFER_SIZE} bytes, resetting`);
+        this.readBuffer = Buffer.alloc(0);
+        return;
+      }
       this.processFrames();
     });
 

ts/proxies/smart-proxy/smart-proxy.ts

@@ -128,6 +128,7 @@ export class SmartProxy extends plugins.EventEmitter {
     }
 
     // Handle unexpected exit (only emits error if not intentionally stopping)
+    this.bridge.removeAllListeners('exit');
     this.bridge.on('exit', (code: number | null, signal: string | null) => {
       if (this.stopping) return;
       logger.log('error', `RustProxy exited unexpectedly (code=${code}, signal=${signal})`, { component: 'smart-proxy' });