path: root/src/corelib/io
diff options
authorThiago Macieira <>2015-02-10 08:26:14 -0800
committerThiago Macieira <>2015-02-16 05:31:17 +0000
commitafb52763aa759b3b60be2816212af04d0063595c (patch)
treea7b918c2cc9bffc6e64f557811092847b228dc4a /src/corelib/io
parentab3113b679922e5232d56a9532c4330b8986e493 (diff)
Doc: clarify what QUrl::topLevelDomain actually does
Task-number: QTBUG-44390 Change-Id: I1a800c709d3543699131ffff13c19789a12dac0b Reviewed-by: Martin Smith <> Reviewed-by: Richard J. Moore <>
Diffstat (limited to 'src/corelib/io')
1 files changed, 15 insertions, 0 deletions
diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index eb97eaf6d6..f459928110 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -3083,6 +3083,21 @@ bool QUrl::hasFragment() const
URL does not contain a valid TLD, in which case the function returns
an empty string.
+ Note that this function considers a TLD to be any domain that allows users
+ to register subdomains under, including many home, dynamic DNS websites and
+ blogging providers. This is useful for determining whether two websites
+ belong to the same infrastructure and communication should be allowed, such
+ as browser cookies: two domains should be considered part of the same
+ website if they share at least one label in addition to the value
+ returned by this function.
+ \list
+ \li \c{} and \c{} do not share a top-level domain
+ \li \c{} and \c{} share the \c{} domain, but the next label is different
+ \li \c{} and \c{} share the same top-level domain and one more label,
+ so they are considered part of the same site
+ \endlist
If \a options includes EncodeUnicode, the returned string will be in
ASCII Compatible Encoding.