From 1ed68d47ed0f7a016d264edd3ced87eb6dc83758 Mon Sep 17 00:00:00 2001
From: Nathanael Anderson <nathan@master-technology.com>
Date: Tue, 17 Jul 2018 10:20:08 -0500
Subject: [PATCH] feat: Add Gzip ability to Android http (#128)

* Add Gzip ability to Android http

* Fix issues from rebasing older version of widgets, and fix case sensitivity

* Fix the string to be lowercased.
---
 .../java/org/nativescript/widgets/Async.java  | 21 ++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/android/widgets/src/main/java/org/nativescript/widgets/Async.java b/android/widgets/src/main/java/org/nativescript/widgets/Async.java
index bf444cc67..e1ce838f6 100644
--- a/android/widgets/src/main/java/org/nativescript/widgets/Async.java
+++ b/android/widgets/src/main/java/org/nativescript/widgets/Async.java
@@ -29,6 +29,7 @@ import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
+import java.util.zip.GZIPInputStream;
 
 public class Async
 {
@@ -296,10 +297,20 @@ public class Async
 				{
 					return;
 				}
+				boolean hasAcceptHeader = false;
 
 				for (KeyValuePair pair : this.headers)
 				{
-					connection.addRequestProperty(pair.key.toString(), pair.value.toString());
+					String key = pair.key.toString();
+					connection.addRequestProperty(key, pair.value.toString());
+					if (key.toLowerCase().contentEquals("accept-encoding")) {
+						hasAcceptHeader = true;
+					}
+				}
+
+				// If the user hasn't added an Accept-Encoding header, we add gzip as something we accept
+				if (!hasAcceptHeader) {
+					connection.addRequestProperty("Accept-Encoding", "gzip");
 				}
 			}
 
@@ -387,6 +398,14 @@ public class Async
 				else
 				{
 					inStream = connection.getInputStream();
+					// In the event we don't have a null stream, and we have gzip as part of the encoding
+					// then we will use gzip to decode the stream
+					if (inStream != null) {
+						String encodingHeader = connection.getHeaderField("Content-Encoding");
+						if (encodingHeader != null && encodingHeader.toLowerCase().contains("gzip")) {
+							inStream = new GZIPInputStream(inStream);
+						}
+					}
 				}
 
 				if (inStream == null)