Changed:

- same_domain: If the tld is unknown, only return True if the hostnames are the same
- Fix when starting without an open page

qutebrowser/browser/network/networkmanager.py

@@ -21,9 +21,10 @@
 
 import collections
 
-from PyQt5.QtCore import (pyqtSlot, pyqtSignal, PYQT_VERSION, QCoreApplication)
+from PyQt5.QtCore import (pyqtSlot, pyqtSignal, PYQT_VERSION, QCoreApplication,
+                          QUrl, QByteArray)
 from PyQt5.QtNetwork import (QNetworkAccessManager, QNetworkReply, QSslError,
-                             QSslSocket, QUrl, QByteArray)
+                             QSslSocket)
 
 from qutebrowser.config import config
 from qutebrowser.utils import (message, log, usertypes, utils, objreg, qtutils,
@@ -339,12 +340,14 @@ class NetworkManager(QNetworkAccessManager):
 
         current_url = objreg.get('tabbed-browser', scope='window',
                                  window=self._win_id).currentWidget().url()
-        if (config.get('network', 'referer-header') == 'never' or
-                (config.get('network', 'referer-header') == 'same-domain' and
-                    urlutils.same_domain(req.url(), current_url))):
+        if config.get('network', 'referer-header') == 'never':
             # Note: using ''.encode('ascii') sends a header with no value,
             # instead of no header at all
             req.setRawHeader('Referer'.encode('ascii'), QByteArray())
+        elif (config.get('network', 'referer-header') == 'same-domain' and
+                current_url.isValid() and
+                not urlutils.same_domain(req.url(), current_url)):
+            req.setRawHeader('Referer'.encode('ascii'), QByteArray())
 
         accept_language = config.get('network', 'accept-language')
         if accept_language is not None:

qutebrowser/utils/urlutils.py

@@ -411,6 +411,9 @@ def same_domain(url1, url2):
 
     suffix1 = url1.topLevelDomain()
     suffix2 = url2.topLevelDomain()
+    if suffix1 == '':
+        return url1.host() == url2.host()
+
     if not suffix1 == suffix2:
         return False
 

tests/utils/test_urlutils.py

@@ -239,6 +239,8 @@ class TestSameDomain:
             ('http://example.com', 'http://www.example.com'),
             ('http://bbc.co.uk', 'https://www.bbc.co.uk'),
             ('http://many.levels.of.domains.example.com', 'http://www.example.com'),
+            ('http://idn.иком.museum', 'http://idn2.иком.museum'),
+            ('http://one.not_a_valid_tld', 'http://one.not_a_valid_tld'),
         )
 
         for host1, host2 in hosts:
@@ -250,7 +252,8 @@ class TestSameDomain:
         hosts = (
             ('http://bbc.co.uk', 'http://example.co.uk'),
             ('https://example.kids.museum', 'http://example.kunst.museum'),
-            ('http://idn.иком.museum', 'http://idn.ירושלים.museum')
+            ('http://idn.иком.museum', 'http://idn.ירושלים.museum'),
+            ('http://one.not_a_valid_tld', 'http://two.not_a_valid_tld'),
         )
 
         for host1, host2 in hosts: