diff options
Diffstat (limited to 'src/gun_http2.erl')
| -rw-r--r-- | src/gun_http2.erl | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/gun_http2.erl b/src/gun_http2.erl index 3b92286..dcc1c88 100644 --- a/src/gun_http2.erl +++ b/src/gun_http2.erl @@ -134,6 +134,9 @@ parse(Data0, State0=#http2_state{buffer=Buffer, parse_state=preface}) -> <<_:24,4:8,_/bits>> -> {state, State0#http2_state{buffer=Data}}; %% Not a SETTINGS frame, this is an invalid preface. + <<"HTTP/1",_/bits>> -> + terminate(State0, {connection_error, protocol_error, + 'Invalid connection preface received. Appears to be an HTTP/1 response? (RFC7540 3.5)'}); _ -> terminate(State0, {connection_error, protocol_error, 'Invalid connection preface received. (RFC7540 3.5)'}) @@ -141,8 +144,13 @@ parse(Data0, State0=#http2_state{buffer=Buffer, parse_state=preface}) -> %% Any error in the preface is converted to this specific error %% to make debugging the problem easier (it's the server's fault). _ -> - terminate(State0, {connection_error, protocol_error, - 'Invalid connection preface received. (RFC7540 3.5)'}) + Reason = case Data of + <<"HTTP/1",_/bits>> -> + 'Invalid connection preface received. Appears to be an HTTP/1 response? (RFC7540 3.5)'; + _ -> + 'Invalid connection preface received. (RFC7540 3.5)' + end, + terminate(State0, {connection_error, protocol_error, Reason}) end; parse(Data0, State0=#http2_state{buffer=Buffer, parse_state=PS}) -> Data = << Buffer/binary, Data0/binary >>, |