diff options
Diffstat (limited to 'src/gun_http2.erl')
| -rw-r--r-- | src/gun_http2.erl | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/gun_http2.erl b/src/gun_http2.erl index 3587466..64850fa 100644 --- a/src/gun_http2.erl +++ b/src/gun_http2.erl @@ -163,8 +163,13 @@ parse(Data, State0=#http2_state{status=preface, http2_machine=HTTP2Machine}, %% Any error in the preface is converted to this specific error %% to make debugging the problem easier (it's the server's fault). _ -> - {connection_error(State0, {connection_error, protocol_error, - 'Invalid connection preface received. (RFC7540 3.5)'}), EvHandlerState0} + 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, + {connection_error(State0, {connection_error, protocol_error, Reason}), EvHandlerState0} end; parse(Data, State0=#http2_state{status=Status, http2_machine=HTTP2Machine, streams=Streams}, EvHandler, EvHandlerState0) -> |