Enable CCID-2 specific debugging messages.

The debugging output can additionally be toggled by setting the
ccid2_debug parameter to 0 or 1.

If in doubt, say N.

CCID-3 denotes TCP-Friendly Rate Control (TFRC), an equation-based
rate-controlled congestion control mechanism.  TFRC is designed to
be reasonably fair when competing for bandwidth with TCP-like flows,
where a flow is "reasonably fair" if its sending rate is generally
within a factor of two of the sending rate of a TCP flow under the
same conditions.  However, TFRC has a much lower variation of
throughput over time compared with TCP, which makes CCID-3 more
suitable than CCID-2 for applications such streaming media where a
relatively smooth sending rate is of importance.

CCID-3 is further described in RFC 4342,
http://www.ietf.org/rfc/rfc4342.txt

The TFRC congestion control algorithms were initially described in
RFC 5348.

This text was extracted from RFC 4340 (sec. 10.2),
http://www.ietf.org/rfc/rfc4340.txt

If in doubt, say N.

Enable CCID-3 specific debugging messages.

The debugging output can additionally be toggled by setting the
ccid3_debug parameter to 0 or 1.

If in doubt, say N.