Fix tests in new idempotency work

src/core/channel/http_server_filter.c

@@ -191,7 +191,9 @@ static void hs_mutate_op(grpc_call_element *elem,
 
   if (op->recv_initial_metadata) {
     /* substitute our callback for the higher callback */
+    GPR_ASSERT(op->recv_idempotent_request != NULL);
     calld->recv_initial_metadata = op->recv_initial_metadata;
+    calld->recv_idempotent_request = op->recv_idempotent_request;
     calld->on_done_recv = op->recv_initial_metadata_ready;
     op->recv_initial_metadata_ready = &calld->hs_on_recv;
   }

test/core/end2end/fixtures/proxy.c

@@ -338,10 +338,10 @@ static void on_new_call(void *arg, int success) {
         proxy->new_call_details.deadline, NULL);
     gpr_ref_init(&pc->refs, 1);
 
-    op.flags = 0;
     op.reserved = NULL;
 
     op.op = GRPC_OP_RECV_INITIAL_METADATA;
+    op.flags = 0;
     op.data.recv_initial_metadata = &pc->p2s_initial_metadata;
     refpc(pc, "on_p2s_recv_initial_metadata");
     err = grpc_call_start_batch(
@@ -349,6 +349,7 @@ static void on_new_call(void *arg, int success) {
     GPR_ASSERT(err == GRPC_CALL_OK);
 
     op.op = GRPC_OP_SEND_INITIAL_METADATA;
+    op.flags = proxy->new_call_details.flags;
     op.data.send_initial_metadata.count = pc->c2p_initial_metadata.count;
     op.data.send_initial_metadata.metadata = pc->c2p_initial_metadata.metadata;
     refpc(pc, "on_p2s_sent_initial_metadata");
@@ -357,6 +358,7 @@ static void on_new_call(void *arg, int success) {
     GPR_ASSERT(err == GRPC_CALL_OK);
 
     op.op = GRPC_OP_RECV_MESSAGE;
+    op.flags = 0;
     op.data.recv_message = &pc->c2p_msg;
     refpc(pc, "on_c2p_recv_msg");
     err = grpc_call_start_batch(pc->c2p, &op, 1,
@@ -364,6 +366,7 @@ static void on_new_call(void *arg, int success) {
     GPR_ASSERT(err == GRPC_CALL_OK);
 
     op.op = GRPC_OP_RECV_MESSAGE;
+    op.flags = 0;
     op.data.recv_message = &pc->p2s_msg;
     refpc(pc, "on_p2s_recv_msg");
     err = grpc_call_start_batch(pc->p2s, &op, 1,
@@ -371,6 +374,7 @@ static void on_new_call(void *arg, int success) {
     GPR_ASSERT(err == GRPC_CALL_OK);
 
     op.op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+    op.flags = 0;
     op.data.recv_status_on_client.trailing_metadata =
         &pc->p2s_trailing_metadata;
     op.data.recv_status_on_client.status = &pc->p2s_status;
@@ -383,6 +387,7 @@ static void on_new_call(void *arg, int success) {
     GPR_ASSERT(err == GRPC_CALL_OK);
 
     op.op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+    op.flags = 0;
     op.data.recv_close_on_server.cancelled = &pc->c2p_server_cancelled;
     refpc(pc, "on_c2p_closed");
     err = grpc_call_start_batch(pc->c2p, &op, 1, new_closure(on_c2p_closed, pc),