Here are the data structures with brief descriptions:

bstr_builder_t
bstr_t
htp_base64_decoder
htp_callback_t
htp_cfg_t
htp_conn_t
htp_connp_t
htp_decoder_cfg_t
htp_decompressor_gzip_t
htp_decompressor_t
htp_file_data_t
htp_file_t
htp_header_t
htp_hook_t
htp_list_array_t
htp_list_linked_element_t
htp_list_linked_t
htp_log_t
htp_mpartp_t
htp_multipart_part_t
htp_multipart_t
htp_param_t
htp_table_t
htp_tx_data_t
htp_tx_t
htp_uri_t
htp_urlen_param_t
htp_urlenp_t