Merge 7db1033 into b798551

tests/test_connection.py

@@ -732,6 +732,18 @@ async def handler(request):
             await client_ws.send_message('Hello from client!')
 
 
+async def test_server_sends_after_close(nursery):
+    async def handler(request):
+        server_ws = await request.accept()
+        with pytest.raises(ConnectionClosed):
+            await server_ws.send_message("Hello from server")
+    server = await nursery.start(serve_websocket, handler, HOST, 0, None)
+    stream = await trio.open_tcp_stream(HOST, server.port)
+    client_ws = await wrap_client_stream(nursery, stream, HOST, RESOURCE)
+    async with client_ws:
+        await stream.aclose()
+
+
 async def test_server_does_not_close_handshake(nursery):
     async def handler(stream):
         request = await wrap_server_stream(nursery, stream)

trio_websocket/_impl.py

@@ -1069,7 +1069,7 @@ async def _handle_message_event(self, event):
             self._message_parts = []
             try:
                 await self._send_channel.send(msg)
-            except trio.BrokenResourceError:
+            except (trio.ClosedResourceError, trio.BrokenResourceError):
                 # The receive channel is closed, probably because somebody
                 # called ``aclose()``. We don't want to abort the reader task,
                 # and there's no useful cleanup that we can do here.