diff --git a/rest_rpc/client/detail/async_rpc_session_impl.hpp b/rest_rpc/client/detail/async_rpc_session_impl.hpp
index 4b4380b..79ee468 100644
--- a/rest_rpc/client/detail/async_rpc_session_impl.hpp
+++ b/rest_rpc/client/detail/async_rpc_session_impl.hpp
@@ -76,6 +76,7 @@ namespace timax { namespace rpc
 	void rpc_session<CodecPolicy>::start_rpc_service()
 	{
 		status_ = status_t::running;
+		call_impl();
 		recv_head();
 		setup_heartbeat_timer();
 	}