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Make streamed chunk size configurable

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Defaults to a maximum of 1000000 bytes.

Also standardize the te_identity and te_chunked decoding functions.
Now they both try to read as much as possible (up to the limit),
making body reading much faster when not using chunked encoding.
This commit is contained in:
Loïc Hoguin 2013-03-05 17:49:58 +01:00
parent 55e98f4f61
commit 233cf43ab9
3 changed files with 47 additions and 33 deletions
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8
src/cowboy_http.erl
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@ -853,7 +853,7 @@ authorization_basic_password(<<C, Rest/binary>>, Fun, Acc) ->
%% @doc Decode a stream of chunks.
-spec te_chunked(Bin, TransferState)
-> more | {more, non_neg_integer(), Bin, TransferState}
| {ok, Bin, TransferState} | {ok, Bin, Bin, TransferState}
| {ok, Bin, Bin, TransferState}
| {done, non_neg_integer(), Bin} | {error, badarg}
when Bin::binary(), TransferState::{non_neg_integer(), non_neg_integer()}.
te_chunked(<< "0\r\n\r\n", Rest/binary >>, {0, Streamed}) ->
@ -879,11 +879,13 @@ te_chunked(Data, {ChunkRem, Streamed}) ->
%% @doc Decode an identity stream.
-spec te_identity(Bin, TransferState)
-> {ok, Bin, TransferState} | {done, Bin, non_neg_integer(), Bin}
-> {more, non_neg_integer(), Bin, TransferState}
| {done, Bin, non_neg_integer(), Bin}
when Bin::binary(), TransferState::{non_neg_integer(), non_neg_integer()}.
te_identity(Data, {Streamed, Total})
when Streamed + byte_size(Data) < Total ->
{ok, Data, {Streamed + byte_size(Data), Total}};
Streamed2 = Streamed + byte_size(Data),
{more, Total - Streamed2, Data, {Streamed2, Total}};
te_identity(Data, {Streamed, Total}) ->
Size = Total - Streamed,
<< Data2:Size/binary, Rest/binary >> = Data,