curl::option CurlHandle,"TIMECONDITION","IFMODSINCE"
Pass a string as parameter. This defines how the TIMEVALUE time value is treated. You can set this parameter to IFMODSINCE or IFUNMODSINCE. This is aa HTTP-only feature.
Example
curl::option CURL,"TIMECONDITION","IFMODSINCE"
curl::option CURL,"TIMECONDITION","IFUNMODSINCE"
Note that the values are checked by the module case sensitive, thus you can not write "ifmodsince" or "ifmodsince" or mixed case words.