Blame erlang-cowlib-0002-WS-accepts-iodata-so-byte_size-won-t-work-unless-we-.patch
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From: Rob Ashton <robashton@codeofrob.com>
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Date: Thu, 9 Apr 2015 18:01:38 +0100
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Subject: [PATCH] WS accepts iodata, so byte_size won't work unless we flatten
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diff --git a/src/cow_ws.erl b/src/cow_ws.erl
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index c89c17a..c025b38 100644
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--- a/src/cow_ws.erl
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+++ b/src/cow_ws.erl
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@@ -580,7 +580,7 @@ masked_frame({binary, Payload}, _) ->
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[<< 1:1, 0:3, 2:4, 1:1, Len/bits >>, MaskKeyBin, mask(iolist_to_binary(Payload), MaskKey, <<>>)].
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payload_length(Payload) ->
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- case byte_size(Payload) of
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+ case iolist_size(Payload) of
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N when N =< 125 -> << N:7 >>;
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N when N =< 16#ffff -> << 126:7, N:16 >>;
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N when N =< 16#7fffffffffffffff -> << 127:7, N:64 >>
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