Fix objective c unit test and debugging functions

1 files changed, 7 insertions, 1 deletions

diff --git a/src/core/lib/transport/transport_op_string.cc b/src/core/lib/transport/transport_op_string.cc
index 8c7db642a5..736c2b1777 100644
--- a/src/core/lib/transport/transport_op_string.cc
+++ b/src/core/lib/transport/transport_op_string.cc
@@ -48,7 +48,13 @@ static void put_metadata_list(gpr_strvec* b, grpc_metadata_batch md) {
   grpc_linked_mdelem* m;
   for (m = md.list.head; m != nullptr; m = m->next) {
     if (m != md.list.head) gpr_strvec_add(b, gpr_strdup(", "));
-    put_metadata(b, m->md);
+    if (is_valid_mdelem_index(m->md_index)) {
+      char* tmp;
+      gpr_asprintf(&tmp, "index=%d" , m->md_index);
+      gpr_strvec_add(b, gpr_strdup("index="));
+    } else {
+      put_metadata(b, m->md);
+    }
   }
   if (md.deadline != GRPC_MILLIS_INF_FUTURE) {
     char* tmp;