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-rw-r--r--src/cowboy_client.erl4
-rw-r--r--src/cowboy_http_protocol.erl17
-rw-r--r--src/cowboy_http_req.erl67
3 files changed, 57 insertions, 31 deletions
diff --git a/src/cowboy_client.erl b/src/cowboy_client.erl
index 21931e1..e46619f 100644
--- a/src/cowboy_client.erl
+++ b/src/cowboy_client.erl
@@ -158,7 +158,9 @@ response_body_loop(Client, Acc) ->
{ok, Data, Client2} ->
response_body_loop(Client2, << Acc/binary, Data/binary >>);
{done, Client2} ->
- {ok, Acc, Client2}
+ {ok, Acc, Client2};
+ {error, Reason} ->
+ {error, Reason}
end.
skip_body(Client=#client{state=response_body}) ->
diff --git a/src/cowboy_http_protocol.erl b/src/cowboy_http_protocol.erl
index 816c825..9fad2d0 100644
--- a/src/cowboy_http_protocol.erl
+++ b/src/cowboy_http_protocol.erl
@@ -48,6 +48,8 @@
dispatch :: cowboy_dispatcher:dispatch_rules(),
handler :: {module(), any()},
onrequest :: undefined | fun((#http_req{}) -> #http_req{}),
+ onresponse = undefined :: undefined | fun((cowboy_http:status(),
+ cowboy_http:headers(), #http_req{}) -> #http_req{}),
urldecode :: {fun((binary(), T) -> binary()), T},
req_empty_lines = 0 :: integer(),
max_empty_lines :: integer(),
@@ -79,6 +81,7 @@ init(ListenerPid, Socket, Transport, Opts) ->
MaxKeepalive = proplists:get_value(max_keepalive, Opts, infinity),
MaxLineLength = proplists:get_value(max_line_length, Opts, 4096),
OnRequest = proplists:get_value(onrequest, Opts),
+ OnResponse = proplists:get_value(onresponse, Opts),
Timeout = proplists:get_value(timeout, Opts, 5000),
URLDecDefault = {fun cowboy_http:urldecode/2, crash},
URLDec = proplists:get_value(urldecode, Opts, URLDecDefault),
@@ -86,7 +89,8 @@ init(ListenerPid, Socket, Transport, Opts) ->
wait_request(#state{listener=ListenerPid, socket=Socket, transport=Transport,
dispatch=Dispatch, max_empty_lines=MaxEmptyLines,
max_keepalive=MaxKeepalive, max_line_length=MaxLineLength,
- timeout=Timeout, onrequest=OnRequest, urldecode=URLDec}).
+ timeout=Timeout, onrequest=OnRequest, onresponse=OnResponse,
+ urldecode=URLDec}).
%% @private
-spec parse_request(#state{}) -> ok.
@@ -122,7 +126,7 @@ request({http_request, Method, {absoluteURI, _Scheme, _Host, _Port, Path},
request({http_request, Method, {abs_path, AbsPath}, Version},
State=#state{socket=Socket, transport=Transport,
req_keepalive=Keepalive, max_keepalive=MaxKeepalive,
- urldecode={URLDecFun, URLDecArg}=URLDec}) ->
+ onresponse=OnResponse, urldecode={URLDecFun, URLDecArg}=URLDec}) ->
URLDecode = fun(Bin) -> URLDecFun(Bin, URLDecArg) end,
{Path, RawPath, Qs} = cowboy_dispatcher:split_path(AbsPath, URLDecode),
ConnAtom = if Keepalive < MaxKeepalive -> version_to_connection(Version);
@@ -130,16 +134,19 @@ request({http_request, Method, {abs_path, AbsPath}, Version},
end,
parse_header(#http_req{socket=Socket, transport=Transport,
connection=ConnAtom, pid=self(), method=Method, version=Version,
- path=Path, raw_path=RawPath, raw_qs=Qs, urldecode=URLDec}, State);
+ path=Path, raw_path=RawPath, raw_qs=Qs, onresponse=OnResponse,
+ urldecode=URLDec}, State);
request({http_request, Method, '*', Version},
State=#state{socket=Socket, transport=Transport,
- req_keepalive=Keepalive, max_keepalive=MaxKeepalive, urldecode=URLDec}) ->
+ req_keepalive=Keepalive, max_keepalive=MaxKeepalive,
+ onresponse=OnResponse, urldecode=URLDec}) ->
ConnAtom = if Keepalive < MaxKeepalive -> version_to_connection(Version);
true -> close
end,
parse_header(#http_req{socket=Socket, transport=Transport,
connection=ConnAtom, pid=self(), method=Method, version=Version,
- path='*', raw_path= <<"*">>, raw_qs= <<>>, urldecode=URLDec}, State);
+ path='*', raw_path= <<"*">>, raw_qs= <<>>, onresponse=OnResponse,
+ urldecode=URLDec}, State);
request({http_request, _Method, _URI, _Version}, State) ->
error_terminate(501, State);
request({http_error, <<"\r\n">>},
diff --git a/src/cowboy_http_req.erl b/src/cowboy_http_req.erl
index cdb44ba..f25c5eb 100644
--- a/src/cowboy_http_req.erl
+++ b/src/cowboy_http_req.erl
@@ -696,7 +696,7 @@ reply(Status, Headers, Req=#http_req{resp_body=Body}) ->
-spec reply(cowboy_http:status(), cowboy_http:headers(), iodata(), #http_req{})
-> {ok, #http_req{}}.
reply(Status, Headers, Body, Req=#http_req{socket=Socket, transport=Transport,
- version=Version, connection=Connection, pid=ReqPid,
+ version=Version, connection=Connection,
method=Method, resp_state=waiting, resp_headers=RespHeaders}) ->
RespConn = response_connection(Headers, Connection),
ContentLen = case Body of {CL, _} -> CL; _ -> iolist_size(Body) end,
@@ -704,18 +704,20 @@ reply(Status, Headers, Body, Req=#http_req{socket=Socket, transport=Transport,
{1, 1} -> [{<<"Connection">>, atom_to_connection(Connection)}];
_ -> []
end,
- response(Status, Headers, RespHeaders, [
+ {ReplyType, Req2} = response(Status, Headers, RespHeaders, [
{<<"Content-Length">>, integer_to_list(ContentLen)},
{<<"Date">>, cowboy_clock:rfc1123()},
{<<"Server">>, <<"Cowboy">>}
|HTTP11Headers], Req),
- case {Method, Body} of
- {'HEAD', _} -> ok;
- {_, {_, StreamFun}} -> StreamFun();
- {_, _} -> Transport:send(Socket, Body)
+ if Method =:= 'HEAD' -> ok;
+ ReplyType =:= hook -> ok; %% Hook replied for us, stop there.
+ true ->
+ case Body of
+ {_, StreamFun} -> StreamFun();
+ _ -> Transport:send(Socket, Body)
+ end
end,
- ReqPid ! {?MODULE, resp_sent},
- {ok, Req#http_req{connection=RespConn, resp_state=done,
+ {ok, Req2#http_req{connection=RespConn, resp_state=done,
resp_headers=[], resp_body= <<>>}}.
%% @equiv chunked_reply(Status, [], Req)
@@ -729,7 +731,7 @@ chunked_reply(Status, Req) ->
-> {ok, #http_req{}}.
chunked_reply(Status, Headers, Req=#http_req{
version=Version, connection=Connection,
- pid=ReqPid, resp_state=waiting, resp_headers=RespHeaders}) ->
+ resp_state=waiting, resp_headers=RespHeaders}) ->
RespConn = response_connection(Headers, Connection),
HTTP11Headers = case Version of
{1, 1} -> [
@@ -737,12 +739,11 @@ chunked_reply(Status, Headers, Req=#http_req{
{<<"Transfer-Encoding">>, <<"chunked">>}];
_ -> []
end,
- response(Status, Headers, RespHeaders, [
+ {_, Req2} = response(Status, Headers, RespHeaders, [
{<<"Date">>, cowboy_clock:rfc1123()},
{<<"Server">>, <<"Cowboy">>}
|HTTP11Headers], Req),
- ReqPid ! {?MODULE, resp_sent},
- {ok, Req#http_req{connection=RespConn, resp_state=chunks,
+ {ok, Req2#http_req{connection=RespConn, resp_state=chunks,
resp_headers=[], resp_body= <<>>}}.
%% @doc Send a chunk of data.
@@ -762,12 +763,11 @@ chunk(Data, #http_req{socket=Socket, transport=Transport, resp_state=chunks}) ->
-spec upgrade_reply(cowboy_http:status(), cowboy_http:headers(), #http_req{})
-> {ok, #http_req{}}.
upgrade_reply(Status, Headers, Req=#http_req{
- pid=ReqPid, resp_state=waiting, resp_headers=RespHeaders}) ->
- response(Status, Headers, RespHeaders, [
+ resp_state=waiting, resp_headers=RespHeaders}) ->
+ {_, Req2} = response(Status, Headers, RespHeaders, [
{<<"Connection">>, <<"Upgrade">>}
], Req),
- ReqPid ! {?MODULE, resp_sent},
- {ok, Req#http_req{resp_state=done, resp_headers=[], resp_body= <<>>}}.
+ {ok, Req2#http_req{resp_state=done, resp_headers=[], resp_body= <<>>}}.
%% Misc API.
@@ -798,16 +798,33 @@ transport(#http_req{transport=Transport, socket=Socket}) ->
%% Internal.
-spec response(cowboy_http:status(), cowboy_http:headers(),
- cowboy_http:headers(), cowboy_http:headers(), #http_req{}) -> ok.
-response(Status, Headers, RespHeaders, DefaultHeaders, #http_req{
- socket=Socket, transport=Transport, version=Version}) ->
+ cowboy_http:headers(), cowboy_http:headers(), #http_req{})
+ -> {normal | hook, #http_req{}}.
+response(Status, Headers, RespHeaders, DefaultHeaders, Req=#http_req{
+ socket=Socket, transport=Transport, version=Version,
+ pid=ReqPid, onresponse=OnResponse}) ->
FullHeaders = response_merge_headers(Headers, RespHeaders, DefaultHeaders),
- %% @todo 'onresponse' hook here.
- HTTPVer = cowboy_http:version_to_binary(Version),
- StatusLine = << HTTPVer/binary, " ", (status(Status))/binary, "\r\n" >>,
- HeaderLines = [[Key, <<": ">>, Value, <<"\r\n">>]
- || {Key, Value} <- FullHeaders],
- Transport:send(Socket, [StatusLine, HeaderLines, <<"\r\n">>]).
+ Req2 = case OnResponse of
+ undefined -> Req;
+ OnResponse -> OnResponse(Status, FullHeaders,
+ %% Don't call 'onresponse' from the hook itself.
+ Req#http_req{resp_headers=[], resp_body= <<>>,
+ onresponse=undefined})
+ end,
+ ReplyType = case Req2#http_req.resp_state of
+ waiting ->
+ HTTPVer = cowboy_http:version_to_binary(Version),
+ StatusLine = << HTTPVer/binary, " ",
+ (status(Status))/binary, "\r\n" >>,
+ HeaderLines = [[Key, <<": ">>, Value, <<"\r\n">>]
+ || {Key, Value} <- FullHeaders],
+ Transport:send(Socket, [StatusLine, HeaderLines, <<"\r\n">>]),
+ ReqPid ! {?MODULE, resp_sent},
+ normal;
+ _ ->
+ hook
+ end,
+ {ReplyType, Req2}.
-spec response_connection(cowboy_http:headers(), keepalive | close)
-> keepalive | close.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 09:45:33 +0000