Set the value of the specified header.
If value
is null and the header, name
, had not been previously set, a space
will be set aside for it (useful for setting the order of headers before values can be obtained for them) otherwise the header will be
unset.
Note: If there are multiple headers with the specified field name, the first instance of the header will be replaced and further instances will be removed.
this | |
name |
header name |
value |
header value |
charset |
a charset |