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-rw-r--r--src/cowboy_http.erl17
1 files changed, 16 insertions, 1 deletions
diff --git a/src/cowboy_http.erl b/src/cowboy_http.erl
index 52b856f..37ecf8d 100644
--- a/src/cowboy_http.erl
+++ b/src/cowboy_http.erl
@@ -791,6 +791,21 @@ commands(State=#state{out_state=wait}, StreamID, [{error_response, StatusCode, H
commands(State, StreamID, [{response, StatusCode, Headers, Body}|Tail]);
commands(State, StreamID, [{error_response, _, _, _}|Tail]) ->
commands(State, StreamID, Tail);
+%% Send an informational response.
+commands(State=#state{socket=Socket, transport=Transport, out_state=wait, streams=Streams},
+ StreamID, [{inform, StatusCode, Headers}|Tail]) ->
+ %% @todo I'm pretty sure the last stream in the list is the one we want
+ %% considering all others are queued.
+ #stream{version=Version} = lists:keyfind(StreamID, #stream.id, Streams),
+ _ = case Version of
+ 'HTTP/1.1' ->
+ Transport:send(Socket, cow_http:response(StatusCode, 'HTTP/1.1',
+ headers_to_list(Headers)));
+ %% Do not send informational responses to HTTP/1.0 clients. (RFC7231 6.2)
+ 'HTTP/1.0' ->
+ ok
+ end,
+ commands(State, StreamID, Tail);
%% Send a full response.
%%
%% @todo Kill the stream if it sent a response when one has already been sent.
@@ -874,7 +889,7 @@ commands(State0=#state{ref=Ref, parent=Parent, socket=Socket, transport=Transpor
_ = [exit(Pid, kill) || {Pid, _, _} <- Children],
flush(),
%% Everything good, upgrade!
- _ = commands(State, StreamID, [{response, 101, Headers, <<>>}]),
+ _ = commands(State, StreamID, [{inform, 101, Headers}]),
%% @todo This is no good because commands return a state normally and here it doesn't
%% we need to let this module go entirely. Perhaps it should be handled directly in
%% cowboy_clear/cowboy_tls? Perhaps not. We do want that Buffer.