From 5f43ec2ff8cce7f0dd6be214129c2659f6934072 Mon Sep 17 00:00:00 2001
From: yangh <yangh@knownsec.com>
Date: Thu, 23 Sep 2021 19:22:56 +0800
Subject: [PATCH] fix: Empty part will hang the process

---
 lib/Dicer.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Dicer.js b/lib/Dicer.js
index 9d580cb..4c21db7 100644
--- a/lib/Dicer.js
+++ b/lib/Dicer.js
@@ -203,7 +203,9 @@ Dicer.prototype._oninfo = function(isMatch, data, start, end) {
     if (this._isPreamble)
       this._isPreamble = false;
     else {
-      ++this._parts;
+      // Only the non-empty part will be counted.
+      // Because the onEnd function is only called in the onHeader event.
+      (end > start) && ++this._parts;
       this._part.on('end', function() {
         if (--self._parts === 0) {
           if (self._finished) {