From c31cb90f3d26fd1a35cd04d33b1c13a3c8825703 Mon Sep 17 00:00:00 2001
From: Lorien <lorienhw@gmail.com>
Date: Fri, 20 Jul 2018 11:59:38 -0700
Subject: [PATCH] change android request builder so it wont set Content-Type
 header to application/octet-stream if it was explicitly set to the empty
 string. This fixes amazon s3 uploads with a presigned url

---
 android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java b/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java
index ace53a5a6..369b9baaf 100644
--- a/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java
+++ b/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java
@@ -266,7 +266,9 @@ else if (value.equalsIgnoreCase("utf8"))
                     requestType = RequestType.Form;
                 }
                 else if(cType.isEmpty()) {
-                    builder.header("Content-Type", "application/octet-stream");
+                    if(!cType.equalsIgnoreCase("")) {
+                      builder.header("Content-Type", "application/octet-stream");
+                    }
                     requestType = RequestType.SingleFile;
                 }
                 if(rawRequestBody != null) {