Here are the data structures with brief descriptions:

Cglobus_ftp_client_restart_extended_block_t	Extended block mode restart marker
Cglobus_ftp_client_restart_marker_t	Restart marker.This structure is may be either a stream mode transfer offset, or an extended block mode byte range
Cglobus_ftp_client_restart_stream_t	Stream mode restart marker
Cglobus_i_ftp_client_cache_entry_t	URL caching support structure
Cglobus_i_ftp_client_data_target_t	Data connection caching information
Cglobus_i_ftp_client_features_s	FTP server features we are interested in
Cglobus_i_ftp_client_handle_t	FTP Client handle implementation
Cglobus_i_ftp_client_handleattr_t	Handle attributes
Cglobus_i_ftp_client_operationattr_t	The globus_i_ftp_client_operationattr_t is a pointer to this structure type
Cglobus_i_ftp_client_plugin_t	FTP Client Plugin.Each plugin implementation should define a method for initializing one of these structures. Plugins may be implemented as either a static function table, or a specialized plugin with plugin-specific attributes
Cglobus_i_ftp_client_range_t	Byte range report.This structure contains information about a single extent of data stored on an FTP server. A report structure is generated from each part of an extended-block mode restart marker message from an FTP server
Cglobus_i_ftp_client_restart_s	Restart information management
Cglobus_i_ftp_client_target_s	FTP Connection State