+ protocol_binary_request_version request= {};
+
+ request.message.header.request.opcode= PROTOCOL_BINARY_CMD_VERSION;
+ request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
+
+ libmemcached_io_vector_st vector[]=
+ {
+ { request.bytes, sizeof(request.bytes) }
+ };
+
+ initialize_binary_request(instance, request.message.header);
+
+ (void)memcached_vdo(instance, vector, 1, false);