Remove common wsutil.Reader allocations #189
Merged
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ws.ReadHeader
allocates a 12 byte temporary buffer to read the header into. Sinceio.ReadFull
is used, it escapes to the heap.wsutil.NewCipherReader
is allocated on each call to NextFrame.Since the
NextFrame
shouldn't have concurrent calls, both of these should be possible to have internally.I am forced to copy "readHeader" from
ws
, since there is not way to eliminate the alloc otherwise as far as I can tell.