chore: send error code,msg on incoming close

Author: asambstack

lib/core/Context.js

@@ -207,7 +207,7 @@ class Context extends EventEmitter {
     });
 
     this.outgoingSocket.on(kUpstreamClosed, (code, msg) => {
-      this.incomingSocket.close();
+      this.incomingSocket.close(code, msg);
       this.emit(kCleanup, this.connectionId);
       logger.info(
         `${OUTGOING} [${this.connectionId}] [CLOSE] - Socket closed with ${code} and ${msg}`

lib/core/IncomingWebSocket.js

@@ -115,8 +115,9 @@ class IncomingWebSocket extends EventEmitter {
   /**
    * Closes the socket connection.
    */
-  close() {
+  close(code, msg) {
     this.teardown = true;
+    this.socket.close(code, msg);
     this.socket.terminate();
   }