From 7d7824701fe5e22f08555d3e1ce3180a922b2151 Mon Sep 17 00:00:00 2001
From: Jeroen88 <info@el-mago.nl>
Date: Wed, 5 Jun 2019 14:00:00 +0200
Subject: [PATCH] Fix persistance issue found, see ESP8266 issue #6152 (#2851)

---
 libraries/HTTPClient/src/HTTPClient.cpp | 3 +++
 libraries/HTTPClient/src/HTTPClient.h   | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/HTTPClient/src/HTTPClient.cpp b/libraries/HTTPClient/src/HTTPClient.cpp
index 8b832988..ab632342 100644
--- a/libraries/HTTPClient/src/HTTPClient.cpp
+++ b/libraries/HTTPClient/src/HTTPClient.cpp
@@ -1080,6 +1080,8 @@ int HTTPClient::handleHeaderResponse()
         return HTTPC_ERROR_NOT_CONNECTED;
     }
 
+    _canReuse = !_useHTTP10;
+
     String transferEncoding;
     _returnCode = -1;
     _size = -1;
@@ -1098,6 +1100,7 @@ int HTTPClient::handleHeaderResponse()
 
             if(headerLine.startsWith("HTTP/1.")) {
                 _returnCode = headerLine.substring(9, headerLine.indexOf(' ', 9)).toInt();
+                _canReuse = (_returnCode != '0');
             } else if(headerLine.indexOf(':')) {
                 String headerName = headerLine.substring(0, headerLine.indexOf(':'));
                 String headerValue = headerLine.substring(headerLine.indexOf(':') + 1);
diff --git a/libraries/HTTPClient/src/HTTPClient.h b/libraries/HTTPClient/src/HTTPClient.h
index 745f6e64..45f6e3f4 100644
--- a/libraries/HTTPClient/src/HTTPClient.h
+++ b/libraries/HTTPClient/src/HTTPClient.h
@@ -217,7 +217,7 @@ protected:
     String _host;
     uint16_t _port = 0;
     int32_t _connectTimeout = -1;
-    bool _reuse = false;
+    bool _reuse = true;
     uint16_t _tcpTimeout = HTTPCLIENT_DEFAULT_TCP_TIMEOUT;
     bool _useHTTP10 = false;
     bool _secure = false;