diff options
Diffstat (limited to 'src/cow_http2.erl')
| -rw-r--r-- | src/cow_http2.erl | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/cow_http2.erl b/src/cow_http2.erl index ec4aab9..225d2ec 100644 --- a/src/cow_http2.erl +++ b/src/cow_http2.erl @@ -15,6 +15,7 @@ -module(cow_http2). %% Parsing. +-export([parse_sequence/1]). -export([parse/1]). -export([parse/2]). -export([parse_settings_payload/1]). @@ -83,6 +84,24 @@ %% Parsing. +-spec parse_sequence(binary()) + -> {ok, binary()} | more | {connection_error, error(), atom()}. +parse_sequence(<<"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", Rest/bits>>) -> + {ok, Rest}; +parse_sequence(Data) when byte_size(Data) >= 24 -> + {connection_error, protocol_error, + 'The connection preface was invalid. (RFC7540 3.5)'}; +parse_sequence(Data) -> + Len = byte_size(Data), + <<Preface:Len/binary, _/bits>> = <<"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n">>, + case Data of + Preface -> + more; + _ -> + {connection_error, protocol_error, + 'The connection preface was invalid. (RFC7540 3.5)'} + end. + parse(<< Len:24, _/bits >>, MaxFrameSize) when Len > MaxFrameSize -> {connection_error, frame_size_error, 'The frame size exceeded SETTINGS_MAX_FRAME_SIZE. (RFC7540 4.2)'}; parse(Data, _) -> |