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An SSL pipe can be in "wrapped" and "unwrapped" mode. In unwrapped mode,
data is passed through untransformed. In wrapped mode, application level
data is encrypted to SSL record level data and vice versa. The SSL record
level is the lowest level in the SSL protocol suite and is what travels
as-is over the wire.
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buffers containing SSL data that needs to be sent to the remote SSL.
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NOTE: In case of short writes, this call MUST be retried with the SAME
buffer passed into the *data* argument (i.e. the id() must be the
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The defaults are implementation-specific. If only the
high-water limit is given, the low-water limit defaults to an
implementation-specific value less than or equal to the
high-water limit. Setting high to zero forces low to zero as
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buffer becomes non-empty. Setting low to zero causes
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