From 4bd6a0b5ffee707f7b17c72b8a95782823c3ee6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Thu, 18 Dec 2014 13:23:34 +0200
Subject: Add cow_http_hd:parse_sec_websocket_protocol_client/1

---
 src/cow_http_hd.erl | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'src/cow_http_hd.erl')

diff --git a/src/cow_http_hd.erl b/src/cow_http_hd.erl
index b1bafaa..cf36b53 100644
--- a/src/cow_http_hd.erl
+++ b/src/cow_http_hd.erl
@@ -31,6 +31,7 @@
 -export([parse_if_unmodified_since/1]).
 -export([parse_last_modified/1]).
 -export([parse_max_forwards/1]).
+-export([parse_sec_websocket_protocol_client/1]).
 -export([parse_sec_websocket_version_client/1]).
 -export([parse_transfer_encoding/1]).
 -export([parse_upgrade/1]).
@@ -1294,6 +1295,34 @@ parse_max_forwards_error_test_() ->
 	[{V, fun() -> {'EXIT', _} = (catch parse_content_length(V)) end} || V <- Tests].
 -endif.
 
+%% @doc Parse the Sec-WebSocket-Protocol request header.
+
+-spec parse_sec_websocket_protocol_client(binary()) -> [binary()].
+parse_sec_websocket_protocol_client(SecWebSocketProtocol) ->
+	nonempty(token_ci_list(SecWebSocketProtocol, [])).
+
+-ifdef(TEST).
+parse_sec_websocket_protocol_client_test_() ->
+	Tests = [
+		{<<"chat, superchat">>, [<<"chat">>, <<"superchat">>]}
+	],
+	[{V, fun() -> R = parse_sec_websocket_protocol_client(V) end} || {V, R} <- Tests].
+
+parse_sec_websocket_protocol_client_error_test_() ->
+	Tests = [
+		<<>>
+	],
+	[{V, fun() -> {'EXIT', _} = (catch parse_sec_websocket_protocol_client(V)) end}
+		|| V <- Tests].
+-endif.
+
+-ifdef(PERF).
+horse_parse_sec_websocket_protocol_client() ->
+	horse:repeat(200000,
+		parse_sec_websocket_protocol_client(<<"chat, superchat">>)
+	).
+-endif.
+
 %% @doc Parse the Sec-WebSocket-Version request header.
 
 -spec parse_sec_websocket_version_client(binary()) -> 0..255.
-- 
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