text: // Copyright (c) Microsoft. All rights reserved.
  // Licensed under the MIT license. See LICENSE file in the project root for full license information.
  
  #ifndef IOTHUB_CLIENT_RETRY_CONTROL
  #define IOTHUB_CLIENT_RETRY_CONTROL
  
  #include <stdlib.h>
  #include <stdbool.h>
  #include "azure_c_shared_utility/optionhandler.h"
  #include "azure_c_shared_utility/umock_c_prod.h"
  #include "iothub_client_core_ll.h"
  #include "internal/iothubtransport.h"
  #include "azure_c_shared_utility/const_defines.h"
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  static STATIC_VAR_UNUSED const char* RETRY_CONTROL_OPTION_INITIAL_WAIT_TIME_IN_SECS = "initial_wait_time_in_secs";
  static STATIC_VAR_UNUSED const char* RETRY_CONTROL_OPTION_MAX_JITTER_PERCENT = "max_jitter_percent";
  static STATIC_VAR_UNUSED const char* RETRY_CONTROL_OPTION_SAVED_OPTIONS = "retry_control_saved_options";
  
  typedef enum RETRY_ACTION_TAG
  {
  	RETRY_ACTION_RETRY_NOW,
  	RETRY_ACTION_RETRY_LATER,
  	RETRY_ACTION_STOP_RETRYING
  } RETRY_ACTION;
  
  struct RETRY_CONTROL_INSTANCE_TAG;
  typedef struct RETRY_CONTROL_INSTANCE_TAG* RETRY_CONTROL_HANDLE;
  
  MOCKABLE_FUNCTION(, RETRY_CONTROL_HANDLE, retry_control_create, IOTHUB_CLIENT_RETRY_POLICY, policy, unsigned int, max_retry_time_in_secs);
  MOCKABLE_FUNCTION(, int, retry_control_should_retry, RETRY_CONTROL_HANDLE, retry_control_handle, RETRY_ACTION*, retry_action);
  MOCKABLE_FUNCTION(, void, retry_control_reset, RETRY_CONTROL_HANDLE, retry_control_handle);
  MOCKABLE_FUNCTION(, int, retry_control_set_option, RETRY_CONTROL_HANDLE, retry_control_handle, const char*, name, const void*, value);
  MOCKABLE_FUNCTION(, OPTIONHANDLER_HANDLE, retry_control_retrieve_options, RETRY_CONTROL_HANDLE, retry_control_handle);
  MOCKABLE_FUNCTION(, void, retry_control_destroy, RETRY_CONTROL_HANDLE, retry_control_handle);
  
  MOCKABLE_FUNCTION(, int, is_timeout_reached, time_t, start_time, unsigned int, timeout_in_secs, bool*, is_timed_out);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif // IOTHUB_CLIENT_RETRY_CONTROL 
  