diff options
Diffstat (limited to 'src/cow_http_hd.erl')
| -rw-r--r-- | src/cow_http_hd.erl | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/cow_http_hd.erl b/src/cow_http_hd.erl index bd0a258..66cb746 100644 --- a/src/cow_http_hd.erl +++ b/src/cow_http_hd.erl @@ -55,6 +55,7 @@ -export([parse_transfer_encoding/1]). -export([parse_upgrade/1]). -export([parse_vary/1]). +-export([parse_x_forwarded_for/1]). -type etag() :: {weak | strong, binary()}. -export_type([etag/0]). @@ -2936,6 +2937,32 @@ parse_vary_error_test_() -> [{V, fun() -> {'EXIT', _} = (catch parse_vary(V)) end} || V <- Tests]. -endif. +%% @doc Parse the X-Forwarded-For header. +%% +%% This header has no specification but *looks like* it is +%% a list of tokens. +%% +%% This header is deprecated in favor of the Forwarded header. + +-spec parse_x_forwarded_for(binary()) -> [binary()]. +parse_x_forwarded_for(XForwardedFor) -> + nonempty(token_list(XForwardedFor, [])). + +-ifdef(TEST). +parse_x_forwarded_for_test_() -> + Tests = [ + {<<"client, proxy1, proxy2">>, [<<"client">>, <<"proxy1">>, <<"proxy2">>]}, + {<<"128.138.243.150, unknown, 192.52.106.30">>, [<<"128.138.243.150">>, <<"unknown">>, <<"192.52.106.30">>]} + ], + [{V, fun() -> R = parse_x_forwarded_for(V) end} || {V, R} <- Tests]. + +parse_x_forwarded_for_error_test_() -> + Tests = [ + <<>> + ], + [{V, fun() -> {'EXIT', _} = (catch parse_x_forwarded_for(V)) end} || V <- Tests]. +-endif. + %% Internal. %% Only return if the list is not empty. |