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HTTP protocol provides for transfer encodings. These define
filters applied to the data described by the
The two most popular transfer encodings are
chunked encoding avoids the need
Content-length header, sending the data in chunks,
each of which is preceded by a length. The
Transfer-encodings are supported by filters defined as foreign
libraries that realise an encoding/decoding stream on top of another
stream. Currently there are two such libraries:
There is an emerging hook interface dealing with transfer encodings.
library(http/http_chunked.pl) provides a hook used by
library(http/http_open.pl) to support chunked encoding in http_open/3.
Note that both
must be loaded for http_open/3
to support chunked encoding.