- size_t size; // allocation size of buffer
- size_t len; // current data length in buffer
- char *buffer; // the buffer
- uint8_t contenttype;
- uint8_t options;
- time_t date; // the date this content has been generated
+ size_t size; // allocation size of buffer, in bytes
+ size_t len; // current data length in buffer, in bytes
+ char *buffer; // the buffer itself
+ uint8_t contenttype; // the content type of the data in the buffer
+ uint8_t options; // options related to the content
+ time_t date; // the timestamp this content has been generated
+ time_t expires; // the timestamp this content expires