Merge remote-tracking branch 'mainline/master'

Conflicts:
	src/gui/image/qpnghandler.cpp

3 files changed, 18 insertions, 1 deletions

diff --git a/src/network/access/qhttpnetworkconnectionchannel.cpp b/src/network/access/qhttpnetworkconnectionchannel.cpp
index 62c6fab..6564b4b 100644
--- a/src/network/access/qhttpnetworkconnectionchannel.cpp
+++ b/src/network/access/qhttpnetworkconnectionchannel.cpp
@@ -91,8 +91,10 @@ void QHttpNetworkConnectionChannel::init()
 #else
     socket = new QTcpSocket;
 #endif
+#ifndef QT_NO_NETWORKPROXY
     // Set by QNAM anyway, but let's be safe here
     socket->setProxy(QNetworkProxy::NoProxy);
+#endif
 
     QObject::connect(socket, SIGNAL(bytesWritten(qint64)),
                      this, SLOT(_q_bytesWritten(qint64)),
@@ -586,13 +588,15 @@ bool QHttpNetworkConnectionChannel::ensureConnection()
 #endif
         } else {
             // In case of no proxy we can use the Unbuffered QTcpSocket
+#ifndef QT_NO_NETWORKPROXY
             if (connection->d_func()->networkProxy.type() == QNetworkProxy::NoProxy
                     && connection->cacheProxy().type() == QNetworkProxy::NoProxy
                     && connection->transparentProxy().type() == QNetworkProxy::NoProxy) {
+#endif
                 socket->connectToHost(connectHost, connectPort, QIODevice::ReadWrite | QIODevice::Unbuffered);
                 // For an Unbuffered QTcpSocket, the read buffer size has a special meaning.
                 socket->setReadBufferSize(1*1024);
-
+#ifndef QT_NO_NETWORKPROXY
             } else {
                 socket->connectToHost(connectHost, connectPort);
 
@@ -601,6 +605,7 @@ bool QHttpNetworkConnectionChannel::ensureConnection()
                 // here and there.
                 socket->setReadBufferSize(64*1024);
             }
+#endif
         }
         return false;
     }
diff --git a/src/network/access/qnetworkaccesshttpbackend.cpp b/src/network/access/qnetworkaccesshttpbackend.cpp
index 4908e0a..a031cd0 100644
--- a/src/network/access/qnetworkaccesshttpbackend.cpp
+++ b/src/network/access/qnetworkaccesshttpbackend.cpp
@@ -233,6 +233,11 @@ void QNetworkAccessHttpBackend::validateCache(QHttpNetworkRequest &httpRequest,
         return;
     }
 
+    // The disk cache API does not currently support partial content retrieval.
+    // That is why we don't use the disk cache for any such requests.
+    if (request().hasRawHeader("Range"))
+        return;
+
     QAbstractNetworkCache *nc = networkCache();
     if (!nc)
         return;                 // no local cache
diff --git a/src/network/access/qnetworkreplyimpl.cpp b/src/network/access/qnetworkreplyimpl.cpp
index 485f449..1c9fa3e 100644
--- a/src/network/access/qnetworkreplyimpl.cpp
+++ b/src/network/access/qnetworkreplyimpl.cpp
@@ -514,6 +514,13 @@ void QNetworkReplyImplPrivate::initCacheSaveDevice()
 {
     Q_Q(QNetworkReplyImpl);
 
+    // The disk cache does not support partial content, so don't even try to
+    // save any such content into the cache.
+    if (q->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 206) {
+        cacheEnabled = false;
+        return;
+    }
+
     // save the meta data
     QNetworkCacheMetaData metaData;
     metaData.setUrl(url);