Add grpc_call_get_peer
diff --git a/src/core/transport/transport.c b/src/core/transport/transport.c
index 2689e30..69c00b6 100644
--- a/src/core/transport/transport.c
+++ b/src/core/transport/transport.c
@@ -65,6 +65,10 @@
   transport->vtable->destroy_stream(transport, stream);
 }
 
+char *grpc_transport_get_peer(grpc_transport *transport) {
+  return transport->vtable->get_peer(transport);
+}
+
 void grpc_transport_stream_op_finish_with_failure(
     grpc_transport_stream_op *op) {
   if (op->send_ops) {