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| author | Loïc Hoguin <[email protected]> | 2025-01-07 12:38:58 +0100 |
|---|---|---|
| committer | Loïc Hoguin <[email protected]> | 2025-01-07 12:50:13 +0100 |
| commit | cdb769a9d33bf9c860f835c44ef445c52d21faae (patch) | |
| tree | f61856b7cfabc5b6b144b03274b43aa3eb238d94 /src | |
| parent | 921b1ff6178bd6710331609f226789e9a763e1ae (diff) | |
| download | cowlib-cdb769a9d33bf9c860f835c44ef445c52d21faae.tar.gz cowlib-cdb769a9d33bf9c860f835c44ef445c52d21faae.tar.bz2 cowlib-cdb769a9d33bf9c860f835c44ef445c52d21faae.zip | |
Optimise Websocket (un)masking
By (un)masking 16 bytes at a time when possible
(instead of 4) we process frames roughly 10% faster
for all frame types.
Diffstat (limited to 'src')
| -rw-r--r-- | src/cow_ws.erl | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/cow_ws.erl b/src/cow_ws.erl index d5c40d0..08790ca 100644 --- a/src/cow_ws.erl +++ b/src/cow_ws.erl @@ -525,8 +525,12 @@ unmask(Data, MaskKey, UnmaskedLen) -> MaskKey2 = (MaskKey bsl (Left * 8)) + (MaskKey bsr (Right * 8)), mask(Data, MaskKey2, <<>>). -mask(<<>>, _, Unmasked) -> - Unmasked; +mask(<< O1:32, O2:32, O3:32, O4:32, Rest/bits >>, MaskKey, Acc) -> + T1 = O1 bxor MaskKey, + T2 = O2 bxor MaskKey, + T3 = O3 bxor MaskKey, + T4 = O4 bxor MaskKey, + mask(Rest, MaskKey, << Acc/binary, T1:32, T2:32, T3:32, T4:32 >>); mask(<< O:32, Rest/bits >>, MaskKey, Acc) -> T = O bxor MaskKey, mask(Rest, MaskKey, << Acc/binary, T:32 >>); @@ -541,7 +545,9 @@ mask(<< O:16 >>, MaskKey, Acc) -> mask(<< O:8 >>, MaskKey, Acc) -> << MaskKey2:8, _:24 >> = << MaskKey:32 >>, T = O bxor MaskKey2, - << Acc/binary, T:8 >>. + << Acc/binary, T:8 >>; +mask(<<>>, _, Unmasked) -> + Unmasked. inflate_frame(Data, Inflate, TakeOver, FragState, true) when FragState =:= undefined; element(1, FragState) =:= fin -> |