diff -r 5cdde6158426 -r 564a3eec6e63 mercurial/wireprotov2server.py
--- a/mercurial/wireprotov2server.py	Sat Apr 14 15:38:11 2018 -0700
+++ b/mercurial/wireprotov2server.py	Sun Apr 15 10:37:29 2018 -0700
@@ -306,6 +306,15 @@
         action, meta = reactor.oncommandresponseready(outstream,
                                                       command['requestid'],
                                                       encoded)
+    elif isinstance(rsp, wireprototypes.v2streamingresponse):
+        action, meta = reactor.oncommandresponsereadygen(outstream,
+                                                         command['requestid'],
+                                                         rsp.gen)
+    elif isinstance(rsp, wireprototypes.v2errorresponse):
+        action, meta = reactor.oncommanderror(outstream,
+                                              command['requestid'],
+                                              rsp.message,
+                                              rsp.args)
     else:
         action, meta = reactor.onservererror(
             _('unhandled response type from wire proto command'))