From ed3b1132065eb33d846a2e70c334049ed7d3319f Mon Sep 17 00:00:00 2001
From: Ciprian Caba <cipriancaba@users.noreply.github.com>
Date: Tue, 21 Aug 2018 17:31:40 +0100
Subject: [PATCH] Update RNFetchBlobReq.java

Fixes the issue described here in relation to uploading to S3 https://github.com/wkh237/react-native-fetch-blob/issues/425
---
 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 8a81a832e..19e8fdc7f 100644
--- a/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java
+++ b/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java
@@ -246,7 +246,9 @@ 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) {