1 files changed, 14 insertions, 1 deletions
diff --git a/src/network/access/qhttpnetworkrequest.cpp b/src/network/access/qhttpnetworkrequest.cpp
index 07f36df851c..c9d2b6f7b88 100644
--- a/src/network/access/qhttpnetworkrequest.cpp
+++ b/src/network/access/qhttpnetworkrequest.cpp
@@ -5,6 +5,8 @@
 #include "qhttpnetworkrequest_p.h"
 #include "private/qnoncontiguousbytedevice_p.h"
 
+#include <QtCore/private/qtools_p.h>
+
 QT_BEGIN_NAMESPACE
 
 QT_IMPL_METATYPE_EXTERN(QHttpNetworkRequest)
@@ -129,8 +131,19 @@ QByteArray QHttpNetworkRequestPrivate::header(const QHttpNetworkRequest &request
     ba += QByteArray::number(request.minorVersion());
     ba += "\r\n";
 
+    constexpr auto titlecase = [](QByteArrayView name) {
+        std::string n;
+        n.reserve(size_t(name.size()));
+        bool toUpperNext = true;
+        for (char c : name) {
+            n += toUpperNext ? QtMiscUtils::toAsciiUpper(c) : c;
+            toUpperNext = c == '-';
+        }
+        return n;
+    };
+
     for (qsizetype i = 0; i < headers.size(); ++i) {
-        ba += headers.nameAt(i);
+        ba += titlecase(headers.nameAt(i));
         ba += ": ";
         ba += headers.valueAt(i);
         ba += "\r\n";