Fixing GraphQL SSE crash with large stanza payloads

Author: JanuszJakubiec

big_tests/tests/graphql_sse_SUITE.erl

@@ -145,6 +145,10 @@ sse_should_not_get_timeout(Config) ->
         timer:sleep(2000),
         escalus:send(Bob, escalus_stanza:chat(From, To, <<"Hello again!">>)),
         sse_helper:wait_for_event(Stream),
+        timer:sleep(2000),
+        Message = binary:copy(<<"0">>, 2000),
+        escalus:send(Bob, escalus_stanza:chat(From, To, Message)),
+        sse_helper:wait_for_event(Stream),
         sse_helper:stop_sse(Stream)
     end).
 

src/graphql/mongoose_graphql_response.erl

@@ -3,10 +3,10 @@
 -export([term_to_json/1, term_to_pretty_json/1]).
 
 term_to_json(Term) ->
-    jiffy:encode(fixup(Term)).
+    iolist_to_binary(jiffy:encode(fixup(Term))).
 
 term_to_pretty_json(Term) ->
-    jiffy:encode(fixup(Term), [pretty]).
+    iolist_to_binary(jiffy:encode(fixup(Term), [pretty])).
 
 %% Ground types
 fixup(Term) when is_number(Term) -> Term;