get_chunk
Description:
Gets a Buffer containing data from this starting at
offset
.
The size of the returned chunk is unspecified. You can iterate through the entire body by first calling get_chunk with an offset of 0, and then on each successive call, increment the offset by the length of the previously-returned chunk.
If offset
is greater than or equal to the total length of this, then the return value depends on
whether or not complete has been called or not; if it has, then
get_chunk will return a 0-length chunk (indicating the end of this). If it has
not, then get_chunk will return null
(indicating that this may still
potentially have more data, but that data is not currently available).
Parameters:
this | |
offset |
an offset |
Returns:
a Buffer, or |