diff -r 4a6479395a9d -r 236a8e81551e hgext/simple4server.py
--- a/hgext/simple4server.py	Wed Aug 27 18:15:39 2014 +0200
+++ b/hgext/simple4server.py	Wed Aug 27 18:16:10 2014 +0200
@@ -75,15 +75,6 @@
     repo.hook('evolve_pushobsmarkers')
     return wireproto.pushres(0)
 
-# from mercurial.obsolete: 19e9478c1a22
-def _encodemarkersstream(fp, markers):
-    """write a binary version of a set of markers
-
-    Includes the initial version number"""
-    fp.write(_pack('>B', 0))
-    for mark in markers:
-        fp.write(obsolete._encodeonemarker(mark))
-
 # from evolve extension: 1a23c7c52a43
 def _getobsmarkersstream(repo, heads=None, common=None):
     """Get a binary stream for all markers relevant to `::<heads> - ::<common>`
@@ -104,7 +95,8 @@
     nodes = [c.node() for c in repo.set(revset, *args)]
     markers = repo.obsstore.relevantmarkers(nodes)
     obsdata = StringIO()
-    _encodemarkersstream(obsdata, markers)
+    for chunk in obsolete.encodemarkers(markers, True):
+        obsdata.write(chunk)
     obsdata.seek(0)
     return obsdata