From 6afd5990c79d86d4136b41018066c05c95d1b0d2 Mon Sep 17 00:00:00 2001
From: Timur Pocheptsov <timur.pocheptsov@qt.io>
Date: Wed, 13 Jun 2018 12:14:19 +0200
Subject: QNativeSocketEnginePrivate (win) read sender's port and address
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even if recvmsg results in WSAEMSGSIZE.

Task-number: QTBUG-68755
Change-Id: I418e924b3e9001e7b7ad991e32d7d6f89ae499af
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/network/socket/qnativesocketengine_win.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/network/socket/qnativesocketengine_win.cpp b/src/network/socket/qnativesocketengine_win.cpp
index c303f01648..1b84b26d83 100644
--- a/src/network/socket/qnativesocketengine_win.cpp
+++ b/src/network/socket/qnativesocketengine_win.cpp
@@ -1232,6 +1232,8 @@ qint64 QNativeSocketEnginePrivate::nativeReceiveDatagram(char *data, qint64 maxL
             // it is ok the buffer was to small if bytesRead is larger than
             // maxLength then assume bytes read is really maxLenth
             ret = qint64(bytesRead) > maxLength ? maxLength : qint64(bytesRead);
+            if (options & QNativeSocketEngine::WantDatagramSender)
+                qt_socket_getPortAndAddress(socketDescriptor, &aa, &header->senderPort, &header->senderAddress);
         } else {
             WS_ERROR_DEBUG(err);
             switch (err) {
-- 
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