reverse_proxy - always override plug's cache-control

This commit is contained in:
href 2019-01-21 15:17:24 +01:00
parent 8cd853ce0c
commit 99763999c1
No known key found for this signature in database
GPG key ID: EE8296C1A152C325

View file

@ -275,11 +275,24 @@ defp build_resp_headers(headers, opts) do
defp build_resp_cache_headers(headers, _opts) do
has_cache? = Enum.any?(headers, fn {k, _} -> k in @resp_cache_headers end)
has_cache_control? = List.keymember?(headers, "cache-control", 0)
if has_cache? do
headers
else
List.keystore(headers, "cache-control", 0, {"cache-control", @default_cache_control_header})
cond do
has_cache? && has_cache_control? ->
headers
has_cache? ->
# There's caching header present but no cache-control -- we need to explicitely override it to public
# as Plug defaults to "max-age=0, private, must-revalidate"
List.keystore(headers, "cache-control", 0, {"cache-control", "public"})
true ->
List.keystore(
headers,
"cache-control",
0,
{"cache-control", @default_cache_control_header}
)
end
end