diff -r 39f7d4ee8bcd -r e826fe7a08c7 mercurial/httppeer.py
--- a/mercurial/httppeer.py	Fri Mar 30 18:53:17 2018 -0700
+++ b/mercurial/httppeer.py	Fri Mar 30 18:57:13 2018 -0700
@@ -135,7 +135,7 @@
 
 class httppeer(wireproto.wirepeer):
     def __init__(self, ui, path, url, opener):
-        self._ui = ui
+        self.ui = ui
         self._path = path
         self._url = url
         self._caps = None
@@ -150,9 +150,9 @@
             getattr(h, "close_all", lambda: None)()
 
     def _openurl(self, req):
-        if (self._ui.debugflag
-            and self._ui.configbool('devel', 'debug.peer-request')):
-            dbg = self._ui.debug
+        if (self.ui.debugflag
+            and self.ui.configbool('devel', 'debug.peer-request')):
+            dbg = self.ui.debug
             line = 'devel-peer-request: %s\n'
             dbg(line % '%s %s' % (req.get_method(), req.get_full_url()))
             hgargssize = None
@@ -179,17 +179,13 @@
             start = util.timer()
 
         ret = self._urlopener.open(req)
-        if self._ui.configbool('devel', 'debug.peer-request'):
+        if self.ui.configbool('devel', 'debug.peer-request'):
             dbg(line % '  finished in %.4f seconds (%s)'
                 % (util.timer() - start, ret.code))
         return ret
 
     # Begin of ipeerconnection interface.
 
-    @util.propertycache
-    def ui(self):
-        return self._ui
-
     def url(self):
         return self._path