===== Description =====



Control 5.1 utilizes a new service named **Cyrious Host Application Programming Interface** (CHAPI). CHAPI is responsible for handling server-side tasks for Cyrious Control. These tasks include things like ID generation for the SQL Database, Licensing and Validation.



===== Installation =====
  * [[chapi_-_command_line_installation_windows_7]]
  * [[chapi_-_command_line_installation_windows_8]]
  * [[chapi_-_command_line_registration_of_chapi_service]]
  * [[chapi_-_command_line_creation_of_chapi_service]]
  * [[chapi_-_password_policy]]
  * [[chapi_-_chapi_local_user_account]]
  * [[chapi_-_service_url_registration]]



===== Configuration =====
  * [[chapi_-_overriding_the_default_control_sql_user_and_password]]



==External Functionality==
  * [[chapi_url_endpoint_listener]]



===== Troubleshooting =====
  * [[chapi_-_chapiurl_startup_option]]
  * [[chapi_-_logchapi_startup_option]]
  * [[chapi_-_setting_the_database_connection_strings_in_chapi.servicehost.exe.config]]
  * [[chapi_-_delete_chapi.servicehost_service]]
  * [[chapi_-_creating_a_batch_file_to_restart_the_chapi_service]]
  * [[control_locked_files_chapiddler_corrections|CHAPI - Unlock record being edited in background process]].
  * [[http://internal.cyriouswiki.com/CHAPI+Keypair+Troubleshooting%7CCHAPI+-+Keypair+Troubleshooting|CHAPI - Keypair Troubleshooting]]
  * [[chapi_-_the_chapi_service_is_not_available]]



===== See Also =====
  * Backlinks [[include_pagepage_componentbacklinks]]