From 8e5a96908a91131c35fcb119fce8831ec80c61c1 Mon Sep 17 00:00:00 2001
From: "Wladimir J. van der Laan" <laanwj@gmail.com>
Date: Mon, 6 Jul 2015 20:06:16 +0200
Subject: qt: Force TLS1.0+ for SSL connections

Github-Pull: #6384
Rebased-From: 15e26a6a9afe299b9ca6fced73b876644365879b
---
 src/qt/bitcoin.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index ee5cbc2ba8..ec02c4be9f 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -48,6 +48,7 @@
 #include <QThread>
 #include <QTimer>
 #include <QTranslator>
+#include <QSslConfiguration>
 
 #if defined(QT_STATICPLUGIN)
 #include <QtPlugin>
@@ -515,6 +516,13 @@ int main(int argc, char *argv[])
 #ifdef Q_OS_MAC
     QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
 #endif
+#if QT_VERSION >= 0x050500
+    // Because of the POODLE attack it is recommended to disable SSLv3 (https://disablessl3.com/),
+    // so set SSL protocols to TLS1.0+.
+    QSslConfiguration sslconf = QSslConfiguration::defaultConfiguration();
+    sslconf.setProtocol(QSsl::TlsV1_0OrLater);
+    QSslConfiguration::setDefaultConfiguration(sslconf);
+#endif
 
     // Register meta types used for QMetaObject::invokeMethod
     qRegisterMetaType< bool* >();
-- 
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