QNetworkAccessManager: Support HTTP redirection

This commit adds support for following HTTP redirect responses on a per
request basis.

This behavior is disabled by default. It can be switched on by
setting the QNetworkRequest::FollowRedirectAttribute to true.

2 new error codes have been added to QNetworkReply:

* TooManyRedirectsError: Set when the number of redirects exceed a
given value set by the user (defaults to 50 if not set)

* UnsecureRedirectError: Set when we are redirecting from a 'https'
to 'http' protocol.

Test cases for the following scenarios:
* Single HTTP redirect using local test server
* Changing max-redirects
* Testing all redirect related error scenarios

The next commit will extend this feature at a QNAM level.

Task-number: QTBUG-8232
Change-Id: If9e28ad12bad08bcdc5bc511b1cd59dc9d8150f0
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/network/access/qhttpnetworkrequest_p.h b/src/network/access/qhttpnetworkrequest_p.h
index d136f22b7d..1add3c6150 100644
--- a/src/network/access/qhttpnetworkrequest_p.h
+++ b/src/network/access/qhttpnetworkrequest_p.h
@@ -118,6 +118,12 @@ public:
     bool isPreConnect() const;
     void setPreConnect(bool preConnect);
 
+    bool isFollowRedirects() const;
+    void setFollowRedirects(bool followRedirect);
+
+    int redirectCount() const;
+    void setRedirectCount(int count);
+
     void setUploadByteDevice(QNonContiguousByteDevice *bd);
     QNonContiguousByteDevice* uploadByteDevice() const;
 
@@ -154,6 +160,8 @@ public:
     bool withCredentials;
     bool ssl;
     bool preConnect;
+    bool followRedirect;
+    int redirectCount;
 };