winrt: Remove partially read datagrams from queue

According to the documentation, datagrams that were
not completely read are discarded.

Change-Id: Id3a038d8aeeba05e8c8f92b70877f5f5297b89ca
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
Reviewed-by: Andre de la Rocha <andre.rocha@qt.io>

1 files changed, 2 insertions, 6 deletions

diff --git a/src/network/socket/qnativesocketengine_winrt.cpp b/src/network/socket/qnativesocketengine_winrt.cpp
index 474dbdd13c..3ca84ad55a 100644
--- a/src/network/socket/qnativesocketengine_winrt.cpp
+++ b/src/network/socket/qnativesocketengine_winrt.cpp
@@ -1075,14 +1075,10 @@ qint64 QNativeSocketEngine::readDatagram(char *data, qint64 maxlen, QIpPacketHea
         *header = datagram.header;
 
     QByteArray readOrigin;
-    // Do not read the whole datagram. Put the rest of it back into the "queue"
-    if (maxlen < datagram.data.length()) {
+    if (maxlen < datagram.data.length())
         readOrigin = datagram.data.left(maxlen);
-        datagram.data = datagram.data.remove(0, maxlen);
-        d->worker->pendingDatagrams.prepend(datagram);
-    } else {
+    else
         readOrigin = datagram.data;
-    }
     if (d->worker->pendingDatagrams.isEmpty()) {
         qCDebug(lcNetworkSocket) << this << Q_FUNC_INFO << "That's all folks";
         d->worker->emitDataReceived = true;