getList
Gets the value of header @name in @hdrs.
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 method@MessageHeaders.get_one.
If @name appears multiple times in @hdrs, method@MessageHeaders.get_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.
Return
the header's value or null if not found.
Parameters
name
header name