Limit is set to the amount of data remaining.
Position is always reset to zero.
If we have some data left after an export, move it to the front of
the buffer and set position to be just after the remains.
This is for supporting certain conduits which choose to write just
the initial portion of a request.
Compress buffer space.
Limit is set to the amount of data remaining. Position is always reset to zero.
If we have some data left after an export, move it to the front of the buffer and set position to be just after the remains. This is for supporting certain conduits which choose to write just the initial portion of a request.