From 6a6d618034fe01b00aa192f2fb44bc9f305f0519 Mon Sep 17 00:00:00 2001 From: Yuchen Zeng Date: Tue, 22 Aug 2017 13:43:38 -0700 Subject: Prevent watching unsuppoted channels --- src/core/ext/filters/client_channel/channel_connectivity.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/core/ext/filters') diff --git a/src/core/ext/filters/client_channel/channel_connectivity.c b/src/core/ext/filters/client_channel/channel_connectivity.c index b83c95275f..0a9e90d12e 100644 --- a/src/core/ext/filters/client_channel/channel_connectivity.c +++ b/src/core/ext/filters/client_channel/channel_connectivity.c @@ -191,6 +191,12 @@ static void watcher_timer_init(grpc_exec_ctx *exec_ctx, void *arg, gpr_free(wa); } +int grpc_channel_support_connectivity_watcher(grpc_channel *channel) { + grpc_channel_element *client_channel_elem = + grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel)); + return client_channel_elem->filter != &grpc_client_channel_filter ? 0 : 1; +} + void grpc_channel_watch_connectivity_state( grpc_channel *channel, grpc_connectivity_state last_observed_state, gpr_timespec deadline, grpc_completion_queue *cq, void *tag) { -- cgit v1.2.3