From 2b3bd69e5b3abf9644c975539beb8ba64c0c414c Mon Sep 17 00:00:00 2001
From: Jonathan Cobb <jonathan@kyuss.org>
Date: Tue, 31 Mar 2020 22:10:51 -0400
Subject: [PATCH] only send upload if there is data

---
 src/main/java/org/cobbzilla/util/http/HttpUtil.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/main/java/org/cobbzilla/util/http/HttpUtil.java b/src/main/java/org/cobbzilla/util/http/HttpUtil.java
index 1ac525f..111c432 100644
--- a/src/main/java/org/cobbzilla/util/http/HttpUtil.java
+++ b/src/main/java/org/cobbzilla/util/http/HttpUtil.java
@@ -94,9 +94,11 @@ public class HttpUtil {
         urlConnection.setRequestMethod(method);
         if (headers != null) addHeaders(urlConnection, headers);
         if (headers2 != null) addHeaders(urlConnection, headers2);
-        urlConnection.setDoOutput(true);
-        final OutputStream upload = urlConnection.getOutputStream();
-        IOUtils.copyLarge(data, upload);
+        if (data != null) {
+            urlConnection.setDoOutput(true);
+            final OutputStream upload = urlConnection.getOutputStream();
+            IOUtils.copyLarge(data, upload);
+        }
         return urlConnection.getInputStream();
     }