diff --git a/ProxyNetworkInterface.php b/ProxyNetworkInterface.php
index 75ccb96..d89e15c 100644
--- a/ProxyNetworkInterface.php
+++ b/ProxyNetworkInterface.php
@@ -211,7 +211,7 @@ private function onPacketReceive(string $buffer): void
                 case ForwardPacket::NETWORK_ID:
                     /** @var ForwardPacket $pk */
                     if (($session = $this->getSession($socketId)) === null) {
-                        throw new PacketHandlingException('Socket with id (' . $socketId . ") doesn't have a session.");
+                        break; // might be data arriving from the client after the server has closed the connection
                     }
 
                     $session->handleEncoded($pk->payload);