Gets the value of header name in this.
Use this for headers whose values are comma-delimited lists, and which are therefore allowed to appear multiple times in the headers. For non-list-valued headers, use [[email protected]_one].
If name appears multiple times in this, [[email protected]_list] will concatenate
all of the values together, separated by commas. This is sometimes awkward to parse (eg, WWW-Authenticate, Set-Cookie), but you have to be
able to deal with it anyway, because the HTTP spec explicitly states that this transformation is allowed, and so an upstream proxy could
do the same thing.
| this | |
| name |
header name |
|
the header's value or null if not found. |