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-rw-r--r--src/cowboy_protocol.erl113
1 files changed, 54 insertions, 59 deletions
diff --git a/src/cowboy_protocol.erl b/src/cowboy_protocol.erl
index 9ad8028..0fe6ed2 100644
--- a/src/cowboy_protocol.erl
+++ b/src/cowboy_protocol.erl
@@ -39,7 +39,7 @@
%% Internal.
-export([init/4]).
--export([parse_request/1]).
+-export([parse_request/2]).
-export([handler_loop/3]).
-type onrequest_fun() :: fun((Req) -> Req).
@@ -66,7 +66,6 @@
max_header_name_length :: integer(),
max_header_value_length :: integer(),
timeout :: timeout(),
- buffer = <<>> :: binary(),
host_tokens = undefined :: undefined | cowboy_dispatcher:tokens(),
path_tokens = undefined :: undefined | '*' | cowboy_dispatcher:tokens(),
hibernate = false :: boolean(),
@@ -107,7 +106,7 @@ init(ListenerPid, Socket, Transport, Opts) ->
URLDecDefault = {fun cowboy_http:urldecode/2, crash},
URLDec = get_value(urldecode, Opts, URLDecDefault),
ok = ranch:accept_ack(ListenerPid),
- wait_request(#state{listener=ListenerPid, socket=Socket,
+ wait_request(<<>>, #state{listener=ListenerPid, socket=Socket,
transport=Transport, dispatch=Dispatch,
max_empty_lines=MaxEmptyLines, max_keepalive=MaxKeepalive,
max_request_line_length=MaxRequestLineLength,
@@ -116,144 +115,141 @@ init(ListenerPid, Socket, Transport, Opts) ->
timeout=Timeout, onrequest=OnRequest, onresponse=OnResponse,
urldecode=URLDec}).
--spec wait_request(#state{}) -> ok.
-wait_request(State=#state{socket=Socket, transport=Transport,
- timeout=T, buffer=Buffer}) ->
+-spec wait_request(binary(), #state{}) -> ok.
+wait_request(Buffer, State=#state{
+ socket=Socket, transport=Transport, timeout=T}) ->
case Transport:recv(Socket, 0, T) of
- {ok, Data} -> parse_request(State#state{
- buffer= << Buffer/binary, Data/binary >>});
+ {ok, Data} -> parse_request(<< Buffer/binary, Data/binary >>, State);
{error, _Reason} -> terminate(State)
end.
%% @private
--spec parse_request(#state{}) -> ok.
+-spec parse_request(binary(), #state{}) -> ok.
%% Empty lines must be using \r\n.
-parse_request(State=#state{buffer= << "\n", _/binary >>}) ->
+parse_request(<< "\n", _/binary >>, State) ->
error_terminate(400, State);
%% We limit the length of the Request-line to MaxLength to avoid endlessly
%% reading from the socket and eventually crashing.
-parse_request(State=#state{buffer=Buffer, max_request_line_length=MaxLength,
+parse_request(Buffer, State=#state{max_request_line_length=MaxLength,
req_empty_lines=ReqEmpty, max_empty_lines=MaxEmpty}) ->
case binary:match(Buffer, <<"\r\n">>) of
nomatch when byte_size(Buffer) > MaxLength ->
error_terminate(413, State);
nomatch ->
- wait_request(State);
+ wait_request(Buffer, State);
{0, _} when ReqEmpty =:= MaxEmpty ->
error_terminate(400, State);
{0, _} ->
<< _:16, Rest/binary >> = Buffer,
- parse_request(State#state{
- buffer=Rest, req_empty_lines=ReqEmpty + 1});
+ parse_request(Rest, State#state{req_empty_lines=ReqEmpty + 1});
{Pos, _} ->
<< RequestLine:Pos/binary, _:16, Rest/binary >> = Buffer,
case cowboy_http:request_line(RequestLine) of
{Method, AbsPath, Version} ->
- request(State#state{buffer=Rest}, Method, AbsPath, Version);
+ request(Rest, State, Method, AbsPath, Version);
{error, _} ->
error_terminate(400, State)
end
end.
--spec request(#state{}, binary(), binary(), cowboy_http:version()) -> ok.
-request(State, _, _, Version)
+-spec request(binary(), #state{}, binary(), binary(), cowboy_http:version())
+ -> ok.
+request(_, State, _, _, Version)
when Version =/= {1, 0}, Version =/= {1, 1} ->
error_terminate(505, State);
-request(State=#state{socket=Socket, transport=Transport,
+request(Buffer, State=#state{socket=Socket, transport=Transport,
onresponse=OnResponse, urldecode=URLDec},
Method, <<"*">>, Version) ->
Connection = version_to_connection(State, Version),
- parse_header(State#state{path_tokens= '*'},
+ parse_header(Buffer, State#state{path_tokens= '*'},
cowboy_req:new(Socket, Transport, Connection, Method, Version,
<<"*">>, <<>>, OnResponse, URLDec));
-request(State=#state{socket=Socket, transport=Transport,
+request(Buffer, State=#state{socket=Socket, transport=Transport,
onresponse=OnResponse, urldecode=URLDec={URLDecFun, URLDecArg}},
Method, AbsPath, Version) ->
Connection = version_to_connection(State, Version),
{PathTokens, Path, Qs} = cowboy_dispatcher:split_path(AbsPath,
fun(Bin) -> URLDecFun(Bin, URLDecArg) end),
- parse_header(State#state{path_tokens=PathTokens},
+ parse_header(Buffer, State#state{path_tokens=PathTokens},
cowboy_req:new(Socket, Transport, Connection, Method, Version,
Path, Qs, OnResponse, URLDec)).
--spec parse_header(#state{}, cowboy_req:req()) -> ok.
-parse_header(State=#state{buffer= << "\r\n", Rest/binary >>}, Req) ->
- header_end(State#state{buffer=Rest}, Req);
-parse_header(State=#state{buffer=Buffer,
- max_header_name_length=MaxLength}, Req) ->
+-spec parse_header(binary(), #state{}, cowboy_req:req()) -> ok.
+parse_header(<< "\r\n", Rest/binary >>, State, Req) ->
+ header_end(Rest, State, Req);
+parse_header(Buffer, State=#state{max_header_name_length=MaxLength}, Req) ->
case binary:match(Buffer, <<":">>) of
nomatch when byte_size(Buffer) > MaxLength ->
error_terminate(413, State);
nomatch ->
- wait_header(State, Req, fun parse_header/2);
+ wait_header(Buffer, State, Req, fun parse_header/3);
{Pos, _} ->
<< Name:Pos/binary, _:8, Rest/binary >> = Buffer,
Name2 = cowboy_bstr:to_lower(Name),
Rest2 = cowboy_http:whitespace(Rest, fun(D) -> D end),
- parse_header_value(State#state{buffer=Rest2}, Req, Name2, <<>>)
+ parse_header_value(Rest2, State, Req, Name2, <<>>)
end.
-parse_header_value(State=#state{buffer=Buffer,
- max_header_value_length=MaxLength}, Req, Name, SoFar) ->
+parse_header_value(Buffer, State=#state{max_header_value_length=MaxLength},
+ Req, Name, SoFar) ->
case binary:match(Buffer, <<"\r\n">>) of
nomatch when byte_size(Buffer) + byte_size(SoFar) > MaxLength ->
error_terminate(413, State);
nomatch ->
- wait_header(State, Req,
- fun(S, R) -> parse_header_value(S, R, Name, SoFar) end);
+ wait_header(Buffer, State, Req,
+ fun(B, S, R) -> parse_header_value(B, S, R, Name, SoFar) end);
{Pos, _} when Pos + 2 =:= byte_size(Buffer) ->
- wait_header(State, Req,
- fun(S, R) -> parse_header_value(S, R, Name, SoFar) end);
+ wait_header(Buffer, State, Req,
+ fun(B, S, R) -> parse_header_value(B, S, R, Name, SoFar) end);
{Pos, _} ->
<< Value:Pos/binary, _:16, Rest/binary >> = Buffer,
case binary:at(Buffer, Pos + 2) of
C when C =:= $\s; C =:= $\t ->
- parse_header_value(State#state{buffer=Rest}, Req, Name,
+ parse_header_value(Rest, State, Req, Name,
<< SoFar/binary, Value/binary >>);
_ ->
- header(State#state{buffer=Rest}, Req, Name,
+ header(Rest, State, Req, Name,
<< SoFar/binary, Value/binary >>)
end
end.
--spec wait_header(#state{}, cowboy_req:req(), fun()) -> ok.
-wait_header(State=#state{socket=Socket, transport=Transport,
- timeout=T, buffer=Buffer}, Req, Fun) ->
+-spec wait_header(binary(), #state{}, cowboy_req:req(), fun()) -> ok.
+wait_header(Buffer, State=#state{socket=Socket, transport=Transport,
+ timeout=T}, Req, Fun) ->
case Transport:recv(Socket, 0, T) of
- {ok, Data} -> Fun(State#state{
- buffer= << Buffer/binary, Data/binary >>}, Req);
+ {ok, Data} -> Fun(<< Buffer/binary, Data/binary >>, State, Req);
{error, timeout} -> error_terminate(408, State);
{error, closed} -> terminate(State)
end.
--spec header(#state{}, cowboy_req:req(), binary(), binary()) -> ok.
-header(State=#state{host_tokens=undefined, transport=Transport},
+-spec header(binary(), #state{}, cowboy_req:req(), binary(), binary()) -> ok.
+header(Buffer, State=#state{host_tokens=undefined, transport=Transport},
Req, <<"host">>, RawHost) ->
RawHost2 = cowboy_bstr:to_lower(RawHost),
case catch cowboy_dispatcher:split_host(RawHost2) of
{HostTokens, Host, undefined} ->
Port = default_port(Transport:name()),
- parse_header(State#state{host_tokens=HostTokens},
+ parse_header(Buffer, State#state{host_tokens=HostTokens},
cowboy_req:set_host(Host, Port, RawHost, Req));
{HostTokens, Host, Port} ->
- parse_header(State#state{host_tokens=HostTokens},
+ parse_header(Buffer, State#state{host_tokens=HostTokens},
cowboy_req:set_host(Host, Port, RawHost, Req));
{'EXIT', _Reason} ->
error_terminate(400, State)
end;
%% Ignore Host headers if we already have it.
-header(State, Req, <<"host">>, _) ->
- parse_header(State, Req);
-header(State=#state{req_keepalive=Keepalive, max_keepalive=MaxKeepalive},
- Req, <<"connection">>, Connection)
+header(Buffer, State, Req, <<"host">>, _) ->
+ parse_header(Buffer, State, Req);
+header(Buffer, State=#state{req_keepalive=Keepalive,
+ max_keepalive=MaxKeepalive}, Req, <<"connection">>, Connection)
when Keepalive < MaxKeepalive ->
- parse_header(State, cowboy_req:set_connection(Connection, Req));
-header(State, Req, Name, Value) ->
- parse_header(State, cowboy_req:add_header(Name, Value, Req)).
+ parse_header(Buffer, State, cowboy_req:set_connection(Connection, Req));
+header(Buffer, State, Req, Name, Value) ->
+ parse_header(Buffer, State, cowboy_req:add_header(Name, Value, Req)).
%% The Host header is required in HTTP/1.1 and optional in HTTP/1.0.
-header_end(State=#state{host_tokens=undefined,
- buffer=Buffer, transport=Transport}, Req) ->
+header_end(Buffer, State=#state{host_tokens=undefined, transport=Transport},
+ Req) ->
case cowboy_req:version(Req) of
{{1, 1}, _} ->
error_terminate(400, State);
@@ -262,10 +258,10 @@ header_end(State=#state{host_tokens=undefined,
onrequest(
cowboy_req:set_buffer(Buffer,
cowboy_req:set_host(<<>>, Port, <<>>, Req2)),
- State#state{buffer= <<>>, host_tokens=[]})
+ State)
end;
-header_end(State=#state{buffer=Buffer}, Req) ->
- onrequest(cowboy_req:set_buffer(Buffer, Req), State#state{buffer= <<>>}).
+header_end(Buffer, State, Req) ->
+ onrequest(cowboy_req:set_buffer(Buffer, Req), State).
%% Call the global onrequest callback. The callback can send a reply,
%% in which case we consider the request handled and move on to the next
@@ -443,8 +439,7 @@ next_request(Req, State=#state{req_keepalive=Keepalive}, HandlerRes) ->
receive {cowboy_req, resp_sent} -> ok after 0 -> ok end,
case {HandlerRes, BodyRes, cowboy_req:get_connection(Req)} of
{ok, ok, keepalive} ->
- ?MODULE:parse_request(State#state{
- handler=undefined, buffer=Buffer,
+ ?MODULE:parse_request(Buffer, State#state{handler=undefined,
req_empty_lines=0, req_keepalive=Keepalive + 1});
_Closed ->
terminate(State)