From 2321f1cbd8bc40e7d2e2f19ba2a3ac21edc5d737 Mon Sep 17 00:00:00 2001
From: Thomas Gran <t2gran@gmail.com>
Date: Thu, 5 Sep 2019 19:07:32 +0200
Subject: [PATCH] Fix #205 java.io.IOException: Mark not set

---
 .../java/graphql/servlet/AbstractGraphQLHttpServlet.java     | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/java/graphql/servlet/AbstractGraphQLHttpServlet.java b/src/main/java/graphql/servlet/AbstractGraphQLHttpServlet.java
index cf8bb041..6001fe48 100644
--- a/src/main/java/graphql/servlet/AbstractGraphQLHttpServlet.java
+++ b/src/main/java/graphql/servlet/AbstractGraphQLHttpServlet.java
@@ -457,11 +457,12 @@ private boolean isBatchedQuery(InputStream inputStream) throws IOException {
             return false;
         }
 
+        final int BUFFER_SIZE = 128;
         ByteArrayOutputStream result = new ByteArrayOutputStream();
-        byte[] buffer = new byte[128];
+        byte[] buffer = new byte[BUFFER_SIZE];
         int length;
 
-        inputStream.mark(0);
+        inputStream.mark(BUFFER_SIZE);
         while ((length = inputStream.read(buffer)) != -1) {
             result.write(buffer, 0, length);
             String chunk = result.toString();