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authorPatrick Monnerat <patrick@monnerat.net>2020-01-29 05:28:26 +0100
committerDaniel Stenberg <daniel@haxx.se>2020-03-02 00:00:58 +0100
commited0f357f7d25566110d4302f33759f4ffb5a6f83 (patch)
tree5c2e214eb10e47ebd4e998e372b8563e174fa565 /tests/data/test2072
parent87869e38d7afdec3ef1bb4965711458b088e254f (diff)
mime: do not perform more than one read in a row
Input buffer filling may delay the data sending if data reads are slow. To overcome this problem, file and callback data reads do not accumulate in buffer anymore. All other data (memory data and mime framing) are considered as fast and still concatenated in buffer. As this may highly impact performance in terms of data overhead, an early end of part data check is added to spare a read call. When encoding a part's data, an encoder may require more bytes than made available by a single read. In this case, the above rule does not apply and reads are performed until the encoder is able to deliver some data. Tests 643, 644, 645, 650 and 654 have been adapted to the output data changes, with test data size reduced to avoid the boredom of long lists of 1-byte chunks in verification data. New test 664 checks mimepost using single-byte read callback with encoder. New test 665 checks the end of part data early detection. Fixes #4826 Reported-by: MrdUkk on github
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