diff -r 6602a7b9deec -r f4ca33e33781 mercurial/commandserver.py
--- a/mercurial/commandserver.py	Tue Dec 15 13:27:09 2015 -0800
+++ b/mercurial/commandserver.py	Sun Dec 13 19:32:01 2015 +0900
@@ -43,6 +43,10 @@
         self.out = out
         self.channel = channel
 
+    @property
+    def name(self):
+        return '<%c-channel>' % self.channel
+
     def write(self, data):
         if not data:
             return
@@ -75,6 +79,10 @@
         self.out = out
         self.channel = channel
 
+    @property
+    def name(self):
+        return '<%c-channel>' % self.channel
+
     def read(self, size=-1):
         if size < 0:
             # if we need to consume all the clients input, ask for 4k chunks