msg.finished is only finished if socket has been detached

Author: ronag

index.js

@@ -67,7 +67,7 @@ function isFinished (msg) {
 
   if (typeof msg.finished === 'boolean') {
     // OutgoingMessage
-    return Boolean(msg.finished || (socket && !socket.writable))
+    return Boolean((!socket && msg.finished && msg.outputSize === 0) || (socket && !socket.writable) || (msg.stream && msg.stream.closed))
   }
 
   if (typeof msg.complete === 'boolean') {