Drop R15 support

all.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 KERL_INSTALL_PATH=~/erlang
-KERL_RELEASES="r15b01 r15b02 r15b03 r16b r16b01 r16b02 r16b03-1 17.0 17.1"
+KERL_RELEASES="r16b r16b01 r16b02 r16b03-1 17.0 17.1.2"
 
 make build-tests
 

doc/src/guide/introduction.ezdoc

@@ -32,7 +32,7 @@ guarantee that the experience will be safe and smooth. You are advised
 to perform the necessary testing and security audits prior to deploying
 on other platforms.
 
-Cowboy is developed for Erlang R15B+.
+Cowboy is developed for Erlang/OTP R16B+.
 
 Cowboy may be compiled on earlier Erlang versions with small source code
 modifications but there is no guarantee that it will work as expected.

src/cowboy_clock.erl

@@ -130,7 +130,7 @@ update_rfc1123(<< _:11/binary, Keep:6/binary, _/bits >>,
 update_rfc1123(_, _, {Date = {Y, Mo, D}, {H, M, S}}) ->
 	Wday = calendar:day_of_the_week(Date),
 	<< (weekday(Wday))/binary, ", ", (pad_int(D))/binary, " ",
-		(month(Mo))/binary, " ", (list_to_binary(integer_to_list(Y)))/binary,
+		(month(Mo))/binary, " ", (integer_to_binary(Y))/binary,
 		" ", (pad_int(H))/binary, $:, (pad_int(M))/binary,
 		$:, (pad_int(S))/binary, " GMT" >>.
 
@@ -139,7 +139,7 @@ update_rfc1123(_, _, {Date = {Y, Mo, D}, {H, M, S}}) ->
 pad_int(X) when X < 10 ->
 	<< $0, ($0 + X) >>;
 pad_int(X) ->
-	list_to_binary(integer_to_list(X)).
+	integer_to_binary(X).
 
 -spec weekday(1..7) -> <<_:24>>.
 weekday(1) -> <<"Mon">>;

src/cowboy_req.erl

@@ -276,7 +276,7 @@ host_url(Req=#http_req{transport=Transport, host=Host, port=Port}) ->
 	PortBin = case {TransportName, Port} of
 		{ssl, 443} -> <<>>;
 		{tcp, 80} -> <<>>;
-		_ -> << ":", (list_to_binary(integer_to_list(Port)))/binary >>
+		_ -> << ":", (integer_to_binary(Port))/binary >>
 	end,
 	{<< "http", Secure/binary, "://", Host/binary, PortBin/binary >>, Req}.
 
@@ -634,7 +634,7 @@ body_decode(Req=#http_req{buffer=Data, body_state={stream, _,
 body_decode_end(Req=#http_req{headers=Headers, p_headers=PHeaders},
 		TotalLength, Rest) ->
 	Headers2 = lists:keystore(<<"content-length">>, 1, Headers,
-		{<<"content-length">>, list_to_binary(integer_to_list(TotalLength))}),
+		{<<"content-length">>, integer_to_binary(TotalLength)}),
 	%% At this point we just assume TEs were all decoded.
 	Headers3 = lists:keydelete(<<"transfer-encoding">>, 1, Headers2),
 	PHeaders2 = lists:keystore(<<"content-length">>, 1, PHeaders,

src/cowboy_static.erl

@@ -264,8 +264,7 @@ generate_etag(Req, State={Path, {ok, #file_info{size=Size, mtime=Mtime}},
 	end.
 
 generate_default_etag(Size, Mtime) ->
-	{strong, list_to_binary(integer_to_list(
-		erlang:phash2({Size, Mtime}, 16#ffffffff)))}.
+	{strong, integer_to_binary(erlang:phash2({Size, Mtime}, 16#ffffffff))}.
 
 %% Return the time of last modification of the file.
 

src/cowboy_websocket.erl

@@ -17,10 +17,6 @@
 -module(cowboy_websocket).
 -behaviour(cowboy_sub_protocol).
 
-%% Ignore the deprecation warning for crypto:sha/1.
-%% @todo Remove when we support only R16B+.
--compile(nowarn_deprecated_function).
-
 -export([upgrade/4]).
 -export([handler_loop/4]).
 
@@ -74,7 +70,7 @@ upgrade(Req, Env, Handler, HandlerOpts) ->
 		receive
 			{cowboy_req, resp_sent} -> ok
 		after 0 ->
-			cowboy_req:reply(400, Req),
+			_ = cowboy_req:reply(400, Req),
 			exit(normal)
 		end
 	end.
@@ -166,8 +162,7 @@ handler_init(State=#state{env=Env, transport=Transport,
 websocket_handshake(State=#state{
 			transport=Transport, key=Key, deflate_frame=DeflateFrame},
 		Req, HandlerState) ->
-	%% @todo Change into crypto:hash/2 for R17B+ or when supporting only R16B+.
-	Challenge = base64:encode(crypto:sha(
+	Challenge = base64:encode(crypto:hash(sha,
 		<< Key/binary, "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" >>)),
 	Extensions = case DeflateFrame of
 		false -> [];

test/spdy_SUITE.erl

@@ -127,11 +127,11 @@ two_frames_one_packet(Config) ->
 			<<"/">>, <<"HTTP/1.1">>, [])
 	])),
 	{Frame1, Rest1} = spdy_recv(Socket, Transport, <<>>),
-	{syn_reply, 1, false, <<"200 OK">>, _, _} = cow_spdy:parse(Frame1, Zinf),
+	{syn_reply, _, false, <<"200 OK">>, _, _} = cow_spdy:parse(Frame1, Zinf),
 	{Frame2, Rest2} = spdy_recv(Socket, Transport, Rest1),
 	{data, 1, true, _} = cow_spdy:parse(Frame2, Zinf),
 	{Frame3, Rest3} = spdy_recv(Socket, Transport, Rest2),
-	{syn_reply, 3, false, <<"200 OK">>, _, _} = cow_spdy:parse(Frame3, Zinf),
+	{syn_reply, _, false, <<"200 OK">>, _, _} = cow_spdy:parse(Frame3, Zinf),
 	{Frame4, <<>>} = spdy_recv(Socket, Transport, Rest3),
 	{data, 3, true, _} = cow_spdy:parse(Frame4, Zinf),
 	ok.