Here are the data structures with brief descriptions:
  ci_acl_type | This is the struct used to implement an acl type object |
| ci_cache | The ci_cache_t struct |
| ci_cache_type | A struct which implements a cache type |
| ci_conf_entry | This struct holds a configuration parameter of c-icap server |
| ci_fmt_entry | This structure used to implement text formating directives |
| ci_lookup_table | The lookup table struct |
| ci_port | Basic configurations for a listening port |
| ci_server_conf | This struct holds the basic configurations of c-icap server |
| ci_service_module | Is the structure which implements a service |
 ci_tls_client_options | Stores basic parameters for connecting to the remote TLS server |
