diff --git a/lib/socket.js b/lib/socket.js
index e8781d37b..ec283d393 100644
--- a/lib/socket.js
+++ b/lib/socket.js
@@ -102,6 +102,12 @@ class Socket extends Emitter {
         },
         false
       );
+      if (this.hostname !== "localhost") {
+        this.offlineEventListener = () => {
+          this.onClose("transport close");
+        };
+        addEventListener("offline", this.offlineEventListener, false);
+      }
     }
 
     this.open();
@@ -622,6 +628,10 @@ class Socket extends Emitter {
       // ignore further transport communication
       this.transport.removeAllListeners();
 
+      if (typeof removeEventListener === "function") {
+        removeEventListener("offline", this.offlineEventListener, false);
+      }
+
       // set ready state
       this.readyState = "closed";