From 8fbf4476a8f4a9c9a8bb07a64cc0bbb379e0afa8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=C3=ADn=20=C5=98=C3=ADha?=
 <43958476+anriha@users.noreply.github.com>
Date: Wed, 31 Aug 2022 01:05:29 +0200
Subject: [PATCH] Fix typechecker compatiblity checks in server streaming
 methods (#413)

---
 src/betterproto/templates/template.py.j2 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/betterproto/templates/template.py.j2 b/src/betterproto/templates/template.py.j2
index 61c18632b..c80cd7748 100644
--- a/src/betterproto/templates/template.py.j2
+++ b/src/betterproto/templates/template.py.j2
@@ -179,6 +179,9 @@ class {{ service.py_name }}Base(ServiceBase):
 
         {% endif %}
         raise grpclib.GRPCError(grpclib.const.Status.UNIMPLEMENTED)
+        {% if method.server_streaming %}
+        yield {{ method.py_output_message_type }}()
+        {% endif %}
 
     {% endfor %}