Added comments
diff --git a/src/core/channel/http_client_filter.c b/src/core/channel/http_client_filter.c
index 62a7a1e..08a2c0d 100644
--- a/src/core/channel/http_client_filter.c
+++ b/src/core/channel/http_client_filter.c
@@ -43,8 +43,12 @@
int got_initial_metadata;
grpc_stream_op_buffer *recv_ops;
- grpc_iomgr_closure *on_done_recv;
+ /** Closure to call when finished with the hc_on_recv hook */
+ grpc_iomgr_closure *on_done_recv;
+ /** Receive closures are chained: we inject this closure as the on_done_recv
+ up-call on transport_op, and remember to call our on_done_recv member
+ after handling it. */
grpc_iomgr_closure hc_on_recv;
} call_data;