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-rw-r--r--src/gun_http.erl14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gun_http.erl b/src/gun_http.erl
index d28600b..29cfa9c 100644
--- a/src/gun_http.erl
+++ b/src/gun_http.erl
@@ -35,6 +35,7 @@
-export([stream_info/2]).
-export([down/1]).
-export([ws_upgrade/11]).
+-export([ws_send/6]).
%% Functions shared with gun_http2 and gun_pool.
-export([host_header/3]).
@@ -1051,3 +1052,16 @@ ws_handshake_end(Buffer, State=#http_state{streams=[#stream{flow=InitialFlow}|_]
handler => Handler,
opts => Opts
}}, ReplyTo, Buffer}.
+
+%% Reject attempts to send Websocket frames on HTTP.
+%% This can happen either because the user explicitly
+%% called ws_send on an HTTP connection, or because
+%% the connection was dropped and automatically
+%% reconnected. Automatic reconnection doesn't perform
+%% a Websocket upgrade automatically.
+ws_send(_, _, _, ReplyTo, _, EvHandlerState) ->
+ gun:reply(ReplyTo, {gun_error, self(), {badstate,
+ "This connection does not currently accept Websocket frames. "
+ "The Websocket upgrade was not performed. "
+ "This may happen as a result of automatic reconnect."}}),
+ {[], EvHandlerState}.