From 15d7f3cd0deb1251ca984b78691fa65ca6cfd969 Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Wed, 25 May 2016 06:56:45 -0700
Subject: [PATCH] Mark port as non-listening

---
 src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi      |  2 ++
 .../grpcio/grpc/_cython/_cygrpc/server.pyx.pxi       | 12 ++++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
index 66e6e6b549..d42c58050f 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
@@ -336,6 +336,8 @@ cdef extern from "grpc/_cython/loader.h":
   void grpc_server_register_completion_queue(grpc_server *server,
                                              grpc_completion_queue *cq,
                                              void *reserved) nogil
+  void grpc_server_register_non_listening_completion_queue(
+      grpc_server *server, grpc_completion_queue *cq, void *reserved) nogil
   int grpc_server_add_insecure_http2_port(
       grpc_server *server, const char *addr) nogil
   void grpc_server_start(grpc_server *server) nogil
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
index 8419a59068..55948755b2 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
@@ -81,11 +81,20 @@ cdef class Server:
           self.c_server, queue.c_completion_queue, NULL)
     self.registered_completion_queues.append(queue)
 
+  def register_non_listening_completion_queue(
+      self, CompletionQueue queue not None):
+    if self.is_started:
+      raise ValueError("cannot register completion queues after start")
+    with nogil:
+      grpc_server_register_non_listening_completion_queue(
+          self.c_server, queue.c_completion_queue, NULL)
+    self.registered_completion_queues.append(queue)
+
   def start(self):
     if self.is_started:
       raise ValueError("the server has already started")
     self.backup_shutdown_queue = CompletionQueue()
-    self.register_completion_queue(self.backup_shutdown_queue)
+    self.register_non_listening_completion_queue(self.backup_shutdown_queue)
     self.is_started = True
     with nogil:
       grpc_server_start(self.c_server)
@@ -169,4 +178,3 @@ cdef class Server:
           time.sleep(0)
       with nogil:
         grpc_server_destroy(self.c_server)
-
-- 
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